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Merge pull request #149 from marshmellow42/T55xx_tests

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Add lf viking, lf demod/clock detection improvements
This commit is contained in:
Martin Holst Swende 2015-12-10 10:44:44 +01:00
commit 2c7928874b
22 changed files with 1251 additions and 692 deletions
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11
CHANGELOG.md
View file

@ -5,6 +5,11 @@ This project uses the changelog in accordance with [keepchangelog](http://keepac
## [unreleased][unreleased]
### Added
- `lf t55xx bruteforce <start password> <end password> [i <*.dic>]` - Simple bruteforce attack to find password - (iceman and others)
- `lf viking clone`- clone viking tag to t55x7 or Q5 from 4byte hex ID input
- `lf viking sim` - sim full viking tag from 4byte hex ID input
- `lf viking read` - read viking tag and output ID
- `lf t55xx wipe` - sets t55xx back to factory defaults
- Added viking demod to `lf search` (marshmellow)
- `data askvikingdemod` demod viking id tag from graphbuffer (marshmellow)
- `lf t55xx resetread` added reset then read command - should allow determining start
@ -26,6 +31,12 @@ of stream transmissions (marshmellow)
- Added option c to 'hf list' (mark CRC bytes) (piwi)
### Changed
- Added `[l] <length>` option to data printdemodbuffer
- Adjusted lf awid clone to optionally clone to Q5 tags
- Adjusted lf t55xx detect to find Q5 tags (t5555) instead of just t55x7
- Adjusted all lf NRZ demods - works more acurately and consistantly (as long as you have strong signal)
- Adjusted lf pskindalademod to reduce false positive reads.
- Small adjustments to psk, nrz, and ask clock detect routines - more reliable.
- Adjusted lf em410x em410xsim to accept a clock argument
- Adjusted lf t55xx dump to allow overriding the safety check and warning text (marshmellow)
- Adjusted lf t55xx write input variables (marshmellow)

3
armsrc/appmain.c
View file

@ -1001,6 +1001,9 @@ void UsbPacketReceived(uint8_t *packet, int len)
case CMD_AWID_DEMOD_FSK: // Set realtime AWID demodulation
CmdAWIDdemodFSK(c->arg[0], 0, 0, 1);
break;
case CMD_VIKING_CLONE_TAG:
CopyVikingtoT55xx(c->arg[0], c->arg[1], c->arg[2]);
break;
#endif
#ifdef WITH_HITAG

3
armsrc/apps.h
View file

@ -65,6 +65,7 @@ void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc);
void AcquireTiType(void);
void AcquireRawBitsTI(void);
void SimulateTagLowFrequency(int period, int gap, int ledcontrol);
void SimulateTagLowFrequencyBidir(int divisor, int max_bitlen);
void CmdHIDsimTAG(int hi, int lo, int ledcontrol);
void CmdFSKsimTAG(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream);
void CmdASKsimTag(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream);
@ -74,8 +75,8 @@ void CmdAWIDdemodFSK(int findone, int *high, int *low, int ledcontrol); // Realt
void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol);
void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol);
void CopyIOtoT55x7(uint32_t hi, uint32_t lo); // Clone an ioProx card to T5557/T5567
void SimulateTagLowFrequencyBidir(int divisor, int max_bitlen);
void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT); // Clone an HID card to T5557/T5567
void CopyVikingtoT55xx(uint32_t block1, uint32_t block2, uint8_t Q5);
void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo);
void CopyIndala64toT55x7(uint32_t hi, uint32_t lo); // Clone Indala 64-bit tag by UID to T55x7
void CopyIndala224toT55x7(uint32_t uid1, uint32_t uid2, uint32_t uid3, uint32_t uid4, uint32_t uid5, uint32_t uid6, uint32_t uid7); // Clone Indala 224-bit tag by UID to T55x7

203
armsrc/lfops.c
View file

@ -17,7 +17,7 @@
#include "lfdemod.h"
#include "lfsampling.h"
#include "protocols.h"
#include "usb_cdc.h" //test
#include "usb_cdc.h" // for usb_poll_validate_length
/**
* Function to do a modulation and then get samples.
@ -73,8 +73,6 @@ void ModThenAcquireRawAdcSamples125k(uint32_t delay_off, uint32_t period_0, uint
DoAcquisition_config(false);
}
/* blank r/w tag data stream
...0000000000000000 01111111
1010101010101010101010101010101010101010101010101010101010101010
@ -214,8 +212,6 @@ void ReadTItag(void)
}
}
void WriteTIbyte(uint8_t b)
{
int i = 0;
@ -250,7 +246,7 @@ void AcquireTiType(void)
// clear buffer
uint32_t *BigBuf = (uint32_t *)BigBuf_get_addr();
memset(BigBuf,0,BigBuf_max_traceLen()/sizeof(uint32_t));
BigBuf_Clear_ext(false);
// Set up the synchronous serial port
AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DIN;
@ -312,16 +308,11 @@ void AcquireTiType(void)
}
}
// arguments: 64bit data split into 32bit idhi:idlo and optional 16bit crc
// if crc provided, it will be written with the data verbatim (even if bogus)
// if not provided a valid crc will be computed from the data and written.
void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc)
{
FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
if(crc == 0) {
crc = update_crc16(crc, (idlo)&0xff);
@ -402,8 +393,8 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;
AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_CLK;
#define SHORT_COIL() LOW(GPIO_SSC_DOUT)
#define OPEN_COIL() HIGH(GPIO_SSC_DOUT)
#define SHORT_COIL() LOW(GPIO_SSC_DOUT)
#define OPEN_COIL() HIGH(GPIO_SSC_DOUT)
i = 0;
for(;;) {
@ -693,13 +684,9 @@ void CmdASKsimTag(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream)
//i+=16;
//Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);
if (ledcontrol)
LED_A_ON();
if (ledcontrol) LED_A_ON();
SimulateTagLowFrequency(n, 0, ledcontrol);
if (ledcontrol)
LED_A_OFF();
if (ledcontrol) LED_A_OFF();
}
//carrier can be 2,4 or 8
@ -749,12 +736,9 @@ void CmdPSKsimTag(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream)
//i+=16;
//Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);
if (ledcontrol)
LED_A_ON();
if (ledcontrol) LED_A_ON();
SimulateTagLowFrequency(n, 0, ledcontrol);
if (ledcontrol)
LED_A_OFF();
if (ledcontrol) LED_A_OFF();
}
// loop to get raw HID waveform then FSK demodulate the TAG ID from it
@ -851,7 +835,6 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
void CmdAWIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
{
uint8_t *dest = BigBuf_get_addr();
//const size_t sizeOfBigBuff = BigBuf_max_traceLen();
size_t size;
int idx=0;
// Configure to go in 125Khz listen mode
@ -864,72 +847,71 @@ void CmdAWIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
DoAcquisition_default(-1,true);
// FSK demodulator
//size = sizeOfBigBuff; //variable size will change after demod so re initialize it before use
size = 50*128*2; //big enough to catch 2 sequences of largest format
idx = AWIDdemodFSK(dest, &size);
if (idx>0 && size==96){
// Index map
// 0 10 20 30 40 50 60
// | | | | | | |
// 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
// -----------------------------------------------------------------------------
// 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
// premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
// |---26 bit---| |-----117----||-------------142-------------|
// b = format bit len, o = odd parity of last 3 bits
// f = facility code, c = card number
// w = wiegand parity
// (26 bit format shown)
if (idx<=0 || size!=96) continue;
// Index map
// 0 10 20 30 40 50 60
// | | | | | | |
// 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
// -----------------------------------------------------------------------------
// 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
// premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
// |---26 bit---| |-----117----||-------------142-------------|
// b = format bit len, o = odd parity of last 3 bits
// f = facility code, c = card number
// w = wiegand parity
// (26 bit format shown)
//get raw ID before removing parities
uint32_t rawLo = bytebits_to_byte(dest+idx+64,32);
uint32_t rawHi = bytebits_to_byte(dest+idx+32,32);
uint32_t rawHi2 = bytebits_to_byte(dest+idx,32);
//get raw ID before removing parities
uint32_t rawLo = bytebits_to_byte(dest+idx+64,32);
uint32_t rawHi = bytebits_to_byte(dest+idx+32,32);
uint32_t rawHi2 = bytebits_to_byte(dest+idx,32);
size = removeParity(dest, idx+8, 4, 1, 88);
// ok valid card found!
size = removeParity(dest, idx+8, 4, 1, 88);
if (size != 66) continue;
// ok valid card found!
// Index map
// 0 10 20 30 40 50 60
// | | | | | | |
// 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
// -----------------------------------------------------------------------------
// 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
// bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
// |26 bit| |-117--| |-----142------|
// b = format bit len, o = odd parity of last 3 bits
// f = facility code, c = card number
// w = wiegand parity
// (26 bit format shown)
// Index map
// 0 10 20 30 40 50 60
// | | | | | | |
// 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
// -----------------------------------------------------------------------------
// 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
// bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
// |26 bit| |-117--| |-----142------|
// b = format bit len, o = odd parity of last 3 bits
// f = facility code, c = card number
// w = wiegand parity
// (26 bit format shown)
uint32_t fc = 0;
uint32_t cardnum = 0;
uint32_t code1 = 0;
uint32_t code2 = 0;
uint8_t fmtLen = bytebits_to_byte(dest,8);
if (fmtLen==26){
fc = bytebits_to_byte(dest+9, 8);
cardnum = bytebits_to_byte(dest+17, 16);
code1 = bytebits_to_byte(dest+8,fmtLen);
Dbprintf("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
} else {
cardnum = bytebits_to_byte(dest+8+(fmtLen-17), 16);
if (fmtLen>32){
code1 = bytebits_to_byte(dest+8,fmtLen-32);
code2 = bytebits_to_byte(dest+8+(fmtLen-32),32);
Dbprintf("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
} else{
code1 = bytebits_to_byte(dest+8,fmtLen);
Dbprintf("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
}
uint32_t fc = 0;
uint32_t cardnum = 0;
uint32_t code1 = 0;
uint32_t code2 = 0;
uint8_t fmtLen = bytebits_to_byte(dest,8);
if (fmtLen==26){
fc = bytebits_to_byte(dest+9, 8);
cardnum = bytebits_to_byte(dest+17, 16);
code1 = bytebits_to_byte(dest+8,fmtLen);
Dbprintf("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
} else {
cardnum = bytebits_to_byte(dest+8+(fmtLen-17), 16);
if (fmtLen>32){
code1 = bytebits_to_byte(dest+8,fmtLen-32);
code2 = bytebits_to_byte(dest+8+(fmtLen-32),32);
Dbprintf("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
} else{
code1 = bytebits_to_byte(dest+8,fmtLen);
Dbprintf("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
}
if (findone){
if (ledcontrol) LED_A_OFF();
return;
}
// reset
}
if (findone){
if (ledcontrol) LED_A_OFF();
return;
}
// reset
idx = 0;
WDT_HIT();
}
@ -1064,11 +1046,8 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
/*------------------------------
* T5555/T5557/T5567/T5577 routines
*------------------------------
*/
/* NOTE: T55x7/T5555 configuration register definitions moved to protocols.h */
/*
* NOTE: T55x7/T5555 configuration register definitions moved to protocols.h
*
* Relevant communication times in microsecond
* To compensate antenna falling times shorten the write times
* and enlarge the gap ones.
@ -1078,21 +1057,7 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
#define WRITE_GAP 20*8 // was 160 // SPEC: 1*8 to 20*8 - typ 10*8 (or 10fc)
#define WRITE_0 18*8 // was 144 // SPEC: 16*8 to 32*8 - typ 24*8 (or 24fc)
#define WRITE_1 50*8 // was 400 // SPEC: 48*8 to 64*8 - typ 56*8 (or 56fc) 432 for T55x7; 448 for E5550
#define READ_GAP 52*8
// VALUES TAKEN FROM EM4x function: SendForward
// START_GAP = 440; (55*8) cycles at 125Khz (8us = 1cycle)
// WRITE_GAP = 128; (16*8)
// WRITE_1 = 256 32*8; (32*8)
// These timings work for 4469/4269/4305 (with the 55*8 above)
// WRITE_0 = 23*8 , 9*8 SpinDelayUs(23*8);
// Sam7s has several timers, we will use the source TIMER_CLOCK1 (aka AT91C_TC_CLKS_TIMER_DIV1_CLOCK)
// TIMER_CLOCK1 = MCK/2, MCK is running at 48 MHz, Timer is running at 48/2 = 24 MHz
// Hitag units (T0) have duration of 8 microseconds (us), which is 1/125000 per second (carrier)
// T0 = TIMER_CLOCK1 / 125000 = 192
// 1 Cycle = 8 microseconds(us) == 1 field clock
#define READ_GAP 15*8
void TurnReadLFOn(int delay) {
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
@ -1191,7 +1156,7 @@ void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) {
cmd_send(CMD_ACK,0,0,0,0,0);
}
// Read one card block in page 0
// Read one card block in page [page]
void T55xxReadBlock(uint16_t arg0, uint8_t Block, uint32_t Pwd) {
LED_A_ON();
bool PwdMode = arg0 & 0x1;
@ -1269,7 +1234,6 @@ void T55xxWakeUp(uint32_t Pwd){
void WriteT55xx(uint32_t *blockdata, uint8_t startblock, uint8_t numblocks) {
// write last block first and config block last (if included)
for (uint8_t i = numblocks+startblock; i > startblock; i--) {
//Dbprintf("write- Blk: %d, d:%08X",i-1,blockdata[i-1]);
T55xxWriteBlockExt(blockdata[i-1],i-1,0,0);
}
}
@ -1277,7 +1241,6 @@ void WriteT55xx(uint32_t *blockdata, uint8_t startblock, uint8_t numblocks) {
// Copy HID id to card and setup block 0 config
void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT) {
uint32_t data[] = {0,0,0,0,0,0,0};
//int data1=0, data2=0, data3=0, data4=0, data5=0, data6=0; //up to six blocks for long format
uint8_t last_block = 0;
if (longFMT) {
@ -1367,6 +1330,15 @@ void CopyIndala224toT55x7(uint32_t uid1, uint32_t uid2, uint32_t uid3, uint32_t
// T5567WriteBlock(0x603E10E2,0);
DbpString("DONE!");
}
// clone viking tag to T55xx
void CopyVikingtoT55xx(uint32_t block1, uint32_t block2, uint8_t Q5) {
uint32_t data[] = {T55x7_BITRATE_RF_32 | T55x7_MODULATION_MANCHESTER | (2 << T55x7_MAXBLOCK_SHIFT), block1, block2};
if (Q5) data[0] = (32 << T5555_BITRATE_SHIFT) | T5555_MODULATION_MANCHESTER | 2 << T5555_MAXBLOCK_SHIFT;
// Program the data blocks for supplied ID and the block 0 config
WriteT55xx(data, 0, 3);
LED_D_OFF();
cmd_send(CMD_ACK,0,0,0,0,0);
}
// Define 9bit header for EM410x tags
#define EM410X_HEADER 0x1FF
@ -1464,7 +1436,6 @@ void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo) {
#define FWD_CMD_READ 0x9
#define FWD_CMD_DISABLE 0x5
uint8_t forwardLink_data[64]; //array of forwarded bits
uint8_t * forward_ptr; //ptr for forward message preparation
uint8_t fwd_bit_sz; //forwardlink bit counter
@ -1475,8 +1446,15 @@ uint8_t * fwd_write_ptr; //forwardlink bit pointer
// see EM4469 spec
//====================================================================
//--------------------------------------------------------------------
// VALUES TAKEN FROM EM4x function: SendForward
// START_GAP = 440; (55*8) cycles at 125Khz (8us = 1cycle)
// WRITE_GAP = 128; (16*8)
// WRITE_1 = 256 32*8; (32*8)
// These timings work for 4469/4269/4305 (with the 55*8 above)
// WRITE_0 = 23*8 , 9*8 SpinDelayUs(23*8);
uint8_t Prepare_Cmd( uint8_t cmd ) {
//--------------------------------------------------------------------
*forward_ptr++ = 0; //start bit
*forward_ptr++ = 0; //second pause for 4050 code
@ -1496,10 +1474,7 @@ uint8_t Prepare_Cmd( uint8_t cmd ) {
// prepares address bits
// see EM4469 spec
//====================================================================
//--------------------------------------------------------------------
uint8_t Prepare_Addr( uint8_t addr ) {
//--------------------------------------------------------------------
register uint8_t line_parity;
@ -1520,10 +1495,7 @@ uint8_t Prepare_Addr( uint8_t addr ) {
// prepares data bits intreleaved with parity bits
// see EM4469 spec
//====================================================================
//--------------------------------------------------------------------
uint8_t Prepare_Data( uint16_t data_low, uint16_t data_hi) {
//--------------------------------------------------------------------
register uint8_t line_parity;
register uint8_t column_parity;
@ -1575,7 +1547,6 @@ void SendForward(uint8_t fwd_bit_count) {
fwd_write_ptr++;
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
SpinDelayUs(55*8); //55 cycles off (8us each)for 4305
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
SpinDelayUs(16*8); //16 cycles on (8us each)
@ -1587,7 +1558,6 @@ void SendForward(uint8_t fwd_bit_count) {
//These timings work for 4469/4269/4305 (with the 55*8 above)
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
SpinDelayUs(23*8); //16-4 cycles off (8us each)
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
SpinDelayUs(9*8); //16 cycles on (8us each)
}
@ -1606,7 +1576,6 @@ void EM4xLogin(uint32_t Password) {
//Wait for command to complete
SpinDelay(20);
}
void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
@ -1617,7 +1586,7 @@ void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
uint32_t i = 0;
// Clear destination buffer before sending the command
memset(dest, 0x80, bufferlength);
BigBuf_Clear_ext(false);
//If password mode do login
if (PwdMode == 1) EM4xLogin(Pwd);

29
armsrc/lfsampling.c
View file

@ -10,7 +10,7 @@
#include "apps.h"
#include "util.h"
#include "string.h"
#include "usb_cdc.h" // for usb_poll_validate_length
#include "lfsampling.h"
sample_config config = { 1, 8, 1, 95, 0 } ;
@ -255,7 +255,8 @@ uint32_t SnoopLF()
**/
void doT55x7Acquisition(size_t sample_size) {
#define T55xx_READ_UPPER_THRESHOLD 128+40 // 40 grph
#define T55xx_READ_UPPER_THRESHOLD 128+60 // 60 grph
#define T55xx_READ_LOWER_THRESHOLD 128-60 // -60 grph
#define T55xx_READ_TOL 5
uint8_t *dest = BigBuf_get_addr();
@ -267,10 +268,11 @@ void doT55x7Acquisition(size_t sample_size) {
uint16_t i = 0;
bool startFound = false;
bool highFound = false;
bool lowFound = false;
uint8_t curSample = 0;
uint8_t firstSample = 0;
uint8_t lastSample = 0;
uint16_t skipCnt = 0;
while(!BUTTON_PRESS() && skipCnt<1000) {
while(!BUTTON_PRESS() && !usb_poll_validate_length() && skipCnt<1000 && i<bufsize ) {
WDT_HIT();
if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
AT91C_BASE_SSC->SSC_THR = 0x43;
@ -282,24 +284,33 @@ void doT55x7Acquisition(size_t sample_size) {
// skip until the first high sample above threshold
if (!startFound && curSample > T55xx_READ_UPPER_THRESHOLD) {
if (curSample > firstSample)
firstSample = curSample;
//if (curSample > lastSample)
// lastSample = curSample;
highFound = true;
} else if (!highFound) {
skipCnt++;
continue;
}
// skip until the first Low sample below threshold
if (!startFound && curSample < T55xx_READ_LOWER_THRESHOLD) {
//if (curSample > lastSample)
lastSample = curSample;
lowFound = true;
} else if (!lowFound) {
skipCnt++;
continue;
}
// skip until first high samples begin to change
if (startFound || curSample < firstSample-T55xx_READ_TOL){
if (startFound || curSample > T55xx_READ_LOWER_THRESHOLD+T55xx_READ_TOL){
// if just found start - recover last sample
if (!startFound) {
dest[i++] = firstSample;
dest[i++] = lastSample;
startFound = true;
}
// collect samples
dest[i++] = curSample;
if (i >= bufsize-1) break;
}
}
}

1
client/Makefile
View file

@ -98,6 +98,7 @@ CMDSRCS = nonce2key/crapto1.c\
cmdmain.c \
cmdlft55xx.c \
cmdlfpcf7931.c\
cmdlfviking.c\
pm3_binlib.c\
scripting.c\
cmdscript.c\

102
client/cmddata.c
View file

@ -58,11 +58,12 @@ int CmdSetDebugMode(const char *Cmd)
}
int usage_data_printdemodbuf(){
PrintAndLog("Usage: data printdemodbuffer x o <offset>");
PrintAndLog("Usage: data printdemodbuffer x o <offset> l <length>");
PrintAndLog("Options: ");
PrintAndLog(" h This help");
PrintAndLog(" x output in hex (omit for binary output)");
PrintAndLog(" o <offset> enter offset in # of bits");
PrintAndLog(" l <length> enter length to print in # of bits or hex characters respectively");
return 0;
}
@ -87,7 +88,8 @@ int CmdPrintDemodBuff(const char *Cmd)
char hex[512]={0x00};
bool hexMode = false;
bool errors = false;
uint8_t offset = 0;
uint32_t offset = 0; //could be size_t but no param_get16...
uint32_t length = 512;
char cmdp = 0;
while(param_getchar(Cmd, cmdp) != 0x00)
{
@ -103,10 +105,16 @@ int CmdPrintDemodBuff(const char *Cmd)
break;
case 'o':
case 'O':
offset = param_get8(Cmd, cmdp+1);
offset = param_get32ex(Cmd, cmdp+1, 0, 10);
if (!offset) errors = true;
cmdp += 2;
break;
case 'l':
case 'L':
length = param_get32ex(Cmd, cmdp+1, 512, 10);
if (!length) errors = true;
cmdp += 2;
break;
default:
PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
errors = true;
@ -116,18 +124,17 @@ int CmdPrintDemodBuff(const char *Cmd)
}
//Validations
if(errors) return usage_data_printdemodbuf();
int numBits = (DemodBufferLen-offset) & 0x7FC; //make sure we don't exceed our string
length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length;
int numBits = (length) & 0x00FFC; //make sure we don't exceed our string
if (hexMode){
char *buf = (char *) (DemodBuffer + offset);
numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits;
numBits = binarraytohex(hex, buf, numBits);
if (numBits==0) return 0;
PrintAndLog("DemodBuffer: %s",hex);
} else {
//setDemodBuf(DemodBuffer, DemodBufferLen-offset, offset);
char *bin = sprint_bin_break(DemodBuffer+offset,numBits,16);
PrintAndLog("DemodBuffer:\n%s",bin);
PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16));
}
return 1;
}
@ -315,7 +322,7 @@ int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
char amp = param_getchar(Cmd, 0);
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
if (!maxLen) maxLen = 512*64;
if (!maxLen) maxLen = BIGBUF_SIZE;
if (invert != 0 && invert != 1) {
PrintAndLog("Invalid argument: %s", Cmd);
return 0;
@ -646,7 +653,7 @@ int CmdVikingDemod(const char *Cmd)
return 0;
}
size_t size = DemodBufferLen;
//call lfdemod.c demod for gProxII
//call lfdemod.c demod for Viking
int ans = VikingDemod_AM(DemodBuffer, &size);
if (ans < 0) {
if (g_debugMode) PrintAndLog("Error Viking_Demod %d", ans);
@ -656,7 +663,7 @@ int CmdVikingDemod(const char *Cmd)
uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32);
uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, checksum);
PrintAndLog("Raw: %08X%08X", raw1,raw2);
setDemodBuf(DemodBuffer+ans, 64, 0);
@ -936,14 +943,14 @@ char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
int FSKrawDemod(const char *Cmd, bool verbose)
{
//raw fsk demod no manchester decoding no start bit finding just get binary from wave
//set defaults
int rfLen = 0;
int invert = 0;
int fchigh = 0;
int fclow = 0;
uint8_t rfLen, invert, fchigh, fclow;
//set defaults
//set options from parameters entered with the command
sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
rfLen = param_get8ex(Cmd, 0, 0, 10);
invert = param_get8ex(Cmd, 1, 0, 10);
fchigh = param_get8ex(Cmd, 2, 0, 10);
fclow = param_get8ex(Cmd, 3, 0, 10);
if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
if (rfLen==1){
@ -957,34 +964,34 @@ int FSKrawDemod(const char *Cmd, bool verbose)
if (BitLen==0) return 0;
//get field clock lengths
uint16_t fcs=0;
if (fchigh==0 || fclow == 0){
if (!fchigh || !fclow) {
fcs = countFC(BitStream, BitLen, 1);
if (fcs==0){
fchigh=10;
fclow=8;
}else{
fchigh = (fcs >> 8) & 0xFF;
fclow = fcs & 0xFF;
if (!fcs) {
fchigh = 10;
fclow = 8;
} else {
fchigh = (fcs >> 8) & 0x00FF;
fclow = fcs & 0x00FF;
}
}
//get bit clock length
if (rfLen==0){
if (!rfLen){
rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
if (rfLen == 0) rfLen = 50;
if (!rfLen) rfLen = 50;
}
int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
if (size>0){
int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
if (size > 0){
setDemodBuf(BitStream,size,0);
// Now output the bitstream to the scrollback by line of 16 bits
if (verbose || g_debugMode) {
PrintAndLog("\nUsing Clock:%d, invert:%d, fchigh:%d, fclow:%d", rfLen, invert, fchigh, fclow);
PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", rfLen, invert, fchigh, fclow);
PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
printDemodBuff();
}
return 1;
} else{
} else {
if (g_debugMode) PrintAndLog("no FSK data found");
}
return 0;
@ -1481,6 +1488,17 @@ int CmdFSKdemodPyramid(const char *Cmd)
// NATIONAL CODE, ICAR database
// COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
// FLAG (animal/non-animal)
/*
38 IDbits
10 country code
1 extra app bit
14 reserved bits
1 animal bit
16 ccitt CRC chksum over 64bit ID CODE.
24 appli bits.
-- sample: 985121004515220 [ 37FF65B88EF94 ]
*/
int CmdFDXBdemodBI(const char *Cmd){
int invert = 1;
@ -1507,6 +1525,10 @@ int CmdFDXBdemodBI(const char *Cmd){
if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
return 0;
}
if (size != 128) {
if (g_debugMode) PrintAndLog("Error incorrect data length found");
return 0;
}
setDemodBuf(BitStream, 128, preambleIndex);
@ -1576,6 +1598,9 @@ int PSKDemod(const char *Cmd, bool verbose)
//invalid carrier
return 0;
}
if (g_debugMode){
PrintAndLog("Carrier: rf/%d",carrier);
}
int errCnt=0;
errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
if (errCnt > maxErr){
@ -1617,7 +1642,7 @@ int CmdIndalaDecode(const char *Cmd)
uint8_t invert=0;
size_t size = DemodBufferLen;
size_t startIdx = indala26decode(DemodBuffer, &size, &invert);
if (startIdx < 1) {
if (startIdx < 1 || size > 224) {
if (g_debugMode==1)
PrintAndLog("Error2: %d",ans);
return -1;
@ -1633,7 +1658,7 @@ int CmdIndalaDecode(const char *Cmd)
uid1=bytebits_to_byte(DemodBuffer,32);
uid2=bytebits_to_byte(DemodBuffer+32,32);
if (DemodBufferLen==64) {
PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin(DemodBuffer,DemodBufferLen), uid1, uid2);
PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
} else {
uid3=bytebits_to_byte(DemodBuffer+64,32);
uid4=bytebits_to_byte(DemodBuffer+96,32);
@ -1641,7 +1666,7 @@ int CmdIndalaDecode(const char *Cmd)
uid6=bytebits_to_byte(DemodBuffer+160,32);
uid7=bytebits_to_byte(DemodBuffer+192,32);
PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)",
sprint_bin(DemodBuffer,DemodBufferLen), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
}
if (g_debugMode){
PrintAndLog("DEBUG: printing demodbuffer:");
@ -1711,7 +1736,7 @@ int NRZrawDemod(const char *Cmd, bool verbose)
size_t BitLen = getFromGraphBuf(BitStream);
if (BitLen==0) return 0;
int errCnt=0;
errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr);
errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);
if (errCnt > maxErr){
if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
return 0;
@ -1957,10 +1982,7 @@ int getSamples(const char *Cmd, bool silent)
int n = strtol(Cmd, NULL, 0);
if (n == 0)
n = sizeof(got);
if (n > sizeof(got))
if (n == 0 || n > sizeof(got))
n = sizeof(got);
PrintAndLog("Reading %d bytes from device memory\n", n);
@ -2370,14 +2392,14 @@ static command_t CommandTable[] =
{"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
{"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
{"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
{"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> -- print the data in the DemodBuffer - 'x' for hex output"},
{"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
{"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
{"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
{"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
{"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
{"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
{"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
{"setdebugmode", CmdSetDebugMode, 1, "<0|1> -- Turn on or off Debugging Mode for demods"},
{"setdebugmode", CmdSetDebugMode, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
{"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
{"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
{"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},

43
client/cmdlf.c
View file

@ -29,6 +29,7 @@
#include "cmdlft55xx.h"
#include "cmdlfpcf7931.h"
#include "cmdlfio.h"
#include "cmdlfviking.h"
#include "lfdemod.h"
static int CmdHelp(const char *Cmd);
@ -124,7 +125,7 @@ int CmdFlexdemod(const char *Cmd)
}
}
#define LONG_WAIT 100
#define LONG_WAIT 100
int start;
for (start = 0; start < GraphTraceLen - LONG_WAIT; start++) {
int first = GraphBuffer[start];
@ -206,10 +207,13 @@ int CmdIndalaDemod(const char *Cmd)
uint8_t rawbits[4096];
int rawbit = 0;
int worst = 0, worstPos = 0;
// PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32);
// PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32);
// loop through raw signal - since we know it is psk1 rf/32 fc/2 skip every other value (+=2)
for (i = 0; i < GraphTraceLen-1; i += 2) {
count += 1;
if ((GraphBuffer[i] > GraphBuffer[i + 1]) && (state != 1)) {
// appears redundant - marshmellow
if (state == 0) {
for (j = 0; j < count - 8; j += 16) {
rawbits[rawbit++] = 0;
@ -222,6 +226,7 @@ int CmdIndalaDemod(const char *Cmd)
state = 1;
count = 0;
} else if ((GraphBuffer[i] < GraphBuffer[i + 1]) && (state != 0)) {
//appears redundant
if (state == 1) {
for (j = 0; j < count - 8; j += 16) {
rawbits[rawbit++] = 1;
@ -419,6 +424,7 @@ int CmdIndalaClone(const char *Cmd)
c.arg[1] = uid2;
}
clearCommandBuffer();
SendCommand(&c);
return 0;
}
@ -541,6 +547,7 @@ int CmdLFSetConfig(const char *Cmd)
//Averaging is a flag on high-bit of arg[1]
UsbCommand c = {CMD_SET_LF_SAMPLING_CONFIG};
memcpy(c.d.asBytes,&config,sizeof(sample_config));
clearCommandBuffer();
SendCommand(&c);
return 0;
}
@ -557,6 +564,7 @@ int CmdLFRead(const char *Cmd)
if (param_getchar(Cmd, cmdp) == 's') arg1 = true; //suppress print
//And ship it to device
UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K, {arg1,0,0}};
clearCommandBuffer();
SendCommand(&c);
//WaitForResponse(CMD_ACK,NULL);
if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
@ -576,6 +584,7 @@ int CmdLFSnoop(const char *Cmd)
}
UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES};
clearCommandBuffer();
SendCommand(&c);
WaitForResponse(CMD_ACK,NULL);
return 0;
@ -622,6 +631,7 @@ int CmdLFSim(const char *Cmd)
printf("\n");
PrintAndLog("Starting to simulate");
UsbCommand c = {CMD_SIMULATE_TAG_125K, {GraphTraceLen, gap, 0}};
clearCommandBuffer();
SendCommand(&c);
return 0;
}
@ -771,6 +781,7 @@ int CmdLFfskSim(const char *Cmd)
UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
memcpy(c.d.asBytes, DemodBuffer, size);
clearCommandBuffer();
SendCommand(&c);
return 0;
}
@ -864,6 +875,7 @@ int CmdLFaskSim(const char *Cmd)
UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
PrintAndLog("preparing to sim ask data: %d bits", size);
memcpy(c.d.asBytes, DemodBuffer, size);
clearCommandBuffer();
SendCommand(&c);
return 0;
}
@ -971,6 +983,7 @@ int CmdLFpskSim(const char *Cmd)
UsbCommand c = {CMD_PSK_SIM_TAG, {arg1, arg2, size}};
PrintAndLog("DEBUG: Sending DemodBuffer Length: %d", size);
memcpy(c.d.asBytes, DemodBuffer, size);
clearCommandBuffer();
SendCommand(&c);
return 0;
@ -1124,13 +1137,6 @@ int CmdLFfind(const char *Cmd)
return 1;
}
//add psk and indala
ans=CmdIndalaDecode("");
if (ans>0) {
PrintAndLog("\nValid Indala ID Found!");
return 1;
}
ans=CmdAskEM410xDemod("");
if (ans>0) {
PrintAndLog("\nValid EM410x ID Found!");
@ -1161,6 +1167,12 @@ int CmdLFfind(const char *Cmd)
return 1;
}
ans=CmdIndalaDecode("");
if (ans>0) {
PrintAndLog("\nValid Indala ID Found!");
return 1;
}
ans=CmdPSKNexWatch("");
if (ans>0) {
PrintAndLog("\nValid NexWatch ID Found!");
@ -1202,14 +1214,15 @@ int CmdLFfind(const char *Cmd)
static command_t CommandTable[] =
{
{"help", CmdHelp, 1, "This help"},
{"awid", CmdLFAWID, 1, "{ AWID RFIDs... }"},
{"em4x", CmdLFEM4X, 1, "{ EM4X RFIDs... }"},
{"hid", CmdLFHID, 1, "{ HID RFIDs... }"},
{"awid", CmdLFAWID, 1, "{ AWID RFIDs... }"},
{"em4x", CmdLFEM4X, 1, "{ EM4X RFIDs... }"},
{"hid", CmdLFHID, 1, "{ HID RFIDs... }"},
{"hitag", CmdLFHitag, 1, "{ Hitag tags and transponders... }"},
{"io", CmdLFIO, 1, "{ ioProx tags... }"},
{"io", CmdLFIO, 1, "{ ioProx tags... }"},
{"pcf7931", CmdLFPCF7931, 1, "{ PCF7931 RFIDs... }"},
{"t55xx", CmdLFT55XX, 1, "{ T55xx RFIDs... }"},
{"ti", CmdLFTI, 1, "{ TI RFIDs... }"},
{"t55xx", CmdLFT55XX, 1, "{ T55xx RFIDs... }"},
{"ti", CmdLFTI, 1, "{ TI RFIDs... }"},
{"viking", CmdLFViking, 1, "{ Viking tags... }"},
{"cmdread", CmdLFCommandRead, 0, "<d period> <z period> <o period> <c command> ['H'] -- Modulate LF reader field to send command before read (all periods in microseconds) (option 'H' for 134)"},
{"config", CmdLFSetConfig, 0, "Set config for LF sampling, bit/sample, decimation, frequency"},
{"flexdemod", CmdFlexdemod, 1, "Demodulate samples for FlexPass"},

238
client/cmdlfawid.c
View file

@ -16,9 +16,11 @@
#include "cmdparser.h" // CmdsParse, CmdsHelp
#include "cmdlfawid.h" // AWID function declarations
#include "lfdemod.h" // parityTest
#include "util.h" // weigandparity
#include "protocols.h" // for T55xx config register definitions
#include "cmdmain.h"
static int CmdHelp(const char *Cmd);
static int CmdHelp(const char *Cmd);
int usage_lf_awid_fskdemod(void) {
PrintAndLog("Enables AWID26 compatible reader mode printing details of scanned AWID26 tags.");
@ -26,11 +28,11 @@ int usage_lf_awid_fskdemod(void) {
PrintAndLog("If the ['1'] option is provided, reader mode is exited after reading a single AWID26 card.");
PrintAndLog("");
PrintAndLog("Usage: lf awid fskdemod ['1']");
PrintAndLog(" Options : ");
PrintAndLog("Options : ");
PrintAndLog(" 1 : (optional) stop after reading a single card");
PrintAndLog("");
PrintAndLog(" sample : lf awid fskdemod");
PrintAndLog(" : lf awid fskdemod 1");
PrintAndLog("Samples : lf awid fskdemod");
PrintAndLog(" : lf awid fskdemod 1");
return 0;
}
@ -40,11 +42,11 @@ int usage_lf_awid_sim(void) {
PrintAndLog("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit. Larger values are truncated.");
PrintAndLog("");
PrintAndLog("Usage: lf awid sim <Facility-Code> <Card-Number>");
PrintAndLog(" Options : ");
PrintAndLog("Options : ");
PrintAndLog(" <Facility-Code> : 8-bit value representing the AWID facility code");
PrintAndLog(" <Card Number> : 16-bit value representing the AWID card number");
PrintAndLog("");
PrintAndLog(" sample : lf awid sim 224 1337");
PrintAndLog("Sample : lf awid sim 224 1337");
return 0;
}
@ -54,133 +56,91 @@ int usage_lf_awid_clone(void) {
PrintAndLog("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit. Larger values are truncated.");
PrintAndLog("");
PrintAndLog("Usage: lf awid clone <Facility-Code> <Card-Number>");
PrintAndLog(" Options : ");
PrintAndLog("Options : ");
PrintAndLog(" <Facility-Code> : 8-bit value representing the AWID facility code");
PrintAndLog(" <Card Number> : 16-bit value representing the AWID card number");
PrintAndLog(" Q5 : optional - clone to Q5 (T5555) instead of T55x7 chip");
PrintAndLog("");
PrintAndLog(" sample : lf awid clone 224 1337");
PrintAndLog("Sample : lf awid clone 224 1337");
return 0;
}
int CmdAWIDDemodFSK(const char *Cmd)
{
int CmdAWIDDemodFSK(const char *Cmd) {
int findone=0;
if(Cmd[0]=='1') findone=1;
if (Cmd[0]=='h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod();
UsbCommand c={CMD_AWID_DEMOD_FSK};
c.arg[0]=findone;
if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod();
if (Cmd[0] == '1') findone = 1;
UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
clearCommandBuffer();
SendCommand(&c);
return 0;
}
int getAWIDBits(unsigned int fc, unsigned int cn, uint8_t *AWIDBits)
{
int i;
uint32_t fcode=(fc & 0x000000FF), cnum=(cn & 0x0000FFFF), uBits=0;
if (fcode != fc)
PrintAndLog("NOTE: Facility code truncated for AWID26 format (8-bit facility code)");
if (cnum!=cn)
PrintAndLog("NOTE: Card number was truncated for AWID26 format (16-bit card number)");
//refactored by marshmellow
int getAWIDBits(uint32_t fc, uint32_t cn, uint8_t *AWIDBits) {
uint8_t pre[66];
memset(pre, 0, sizeof(pre));
AWIDBits[7]=1;
num_to_bytebits(26, 8, pre);
AWIDBits[0] = 0x01; // 6-bit Preamble with 2 parity bits
AWIDBits[1] = 0x1D; // First byte from card format (26-bit) plus parity bits
AWIDBits[2] = 0x80; // Set the next two bits as 0b10 to finish card format
uBits = (fcode<<4) + (cnum>>12);
if (!parityTest(uBits,12,0))
AWIDBits[2] |= (1<<5); // If not already even parity, set bit to make even
uBits = AWIDBits[2]>>5;
if (!parityTest(uBits, 3, 1))
AWIDBits[2] |= (1<<4);
uBits = fcode>>5; // first 3 bits of facility-code
AWIDBits[2] += (uBits<<1);
if (!parityTest(uBits, 3, 1))
AWIDBits[2]++; // Set parity bit to make odd parity
uBits = (fcode & 0x1C)>>2;
AWIDBits[3] = 0;
if (!parityTest(uBits,3,1))
AWIDBits[3] |= (1<<4);
AWIDBits[3] += (uBits<<5);
uBits = ((fcode & 0x3)<<1) + ((cnum & 0x8000)>>15); // Grab/shift 2 LSBs from facility code and add shifted MSB from cardnum
if (!parityTest(uBits,3,1))
AWIDBits[3]++; // Set LSB for parity
AWIDBits[3]+= (uBits<<1);
uBits = (cnum & 0x7000)>>12;
AWIDBits[4] = uBits<<5;
if (!parityTest(uBits,3,1))
AWIDBits[4] |= (1<<4);
uBits = (cnum & 0x0E00)>>9;
AWIDBits[4] += (uBits<<1);
if (!parityTest(uBits,3,1))
AWIDBits[4]++; // Set LSB for parity
uBits = (cnum & 0x1C0)>>6; // Next bits from card number
AWIDBits[5]=(uBits<<5);
if (!parityTest(uBits,3,1))
AWIDBits[5] |= (1<<4); // Set odd parity bit as needed
uBits = (cnum & 0x38)>>3;
AWIDBits[5]+= (uBits<<1);
if (!parityTest(uBits,3,1))
AWIDBits[5]++; // Set odd parity bit as needed
uBits = (cnum & 0x7); // Last three bits from card number!
AWIDBits[6] = (uBits<<5);
if (!parityTest(uBits,3,1))
AWIDBits[6] |= (1<<4);
uBits = (cnum & 0x0FFF);
if (!parityTest(uBits,12,1))
AWIDBits[6] |= (1<<3);
else
AWIDBits[6]++;
for (i = 7; i<12; i++)
AWIDBits[i]=0x11;
uint8_t wiegand[24];
num_to_bytebits(fc, 8, wiegand);
num_to_bytebits(cn, 16, wiegand+8);
wiegand_add_parity(pre+8, wiegand, 24);
size_t bitLen = addParity(pre, AWIDBits+8, 66, 4, 1);
if (bitLen != 88) return 0;
//for (uint8_t i = 0; i<3; i++){
// PrintAndLog("DEBUG: %08X", bytebits_to_byte(AWIDBits+(32*i),32));
//}
return 1;
}
int CmdAWIDSim(const char *Cmd)
{
uint32_t fcode = 0, cnum = 0, fc=0, cn=0, i=0;
uint8_t *BS, BitStream[12];
int CmdAWIDSim(const char *Cmd) {
uint32_t fcode = 0, cnum = 0, fc=0, cn=0;
uint8_t BitStream[96];
uint8_t *bs = BitStream;
size_t size = sizeof(BitStream);
memset(bs, 0, size);
uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
uint64_t arg2 = 50; // clk RF/50 invert=0
BS = BitStream;
if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) {
return usage_lf_awid_sim();
}
if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_sim();
fcode = (fc & 0x000000FF);
cnum = (cn & 0x0000FFFF);
if (fc != fcode) PrintAndLog("Facility-Code (%u) truncated to 8-bits: %u",fc,fcode);
if (cn != cnum) PrintAndLog("Card number (%u) truncated to 16-bits: %u",cn,cnum);
fcode=(fc & 0x000000FF);
cnum=(cn & 0x0000FFFF);
if (fc!=fcode)
PrintAndLog("Facility-Code (%u) truncated to 8-bits: %u",fc,fcode);
if (cn!=cnum)
PrintAndLog("Card number (%u) truncated to 16-bits: %u",cn,cnum);
PrintAndLog("Emulating AWID26 -- FC: %u; CN: %u\n",fcode,cnum);
PrintAndLog("Press pm3-button to abort simulation or run another command");
if (!getAWIDBits(fc, cn, bs)) {
PrintAndLog("Error with tag bitstream generation.");
return 1;
}
// AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
if (getAWIDBits(fc, cn, BS)) {
PrintAndLog("Running 'lf simfsk c 50 H 10 L 8 d %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x'",
BS[0],BS[1],BS[2],BS[3],BS[4],BS[5],BS[6],
BS[7],BS[8],BS[9],BS[10],BS[11]);
} else
PrintAndLog("Error with tag bitstream generation.");
UsbCommand c;
c.cmd = CMD_FSK_SIM_TAG;
c.arg[0] = arg1; // fcHigh<<8 + fcLow
c.arg[1] = arg2; // Inversion and clk setting
c.arg[2] = 96; // Bitstream length: 96-bits == 12 bytes
for (i=0; i < 96; i++)
c.d.asBytes[i] = (BS[i/8] & (1<<(7-(i%8))))?1:0;
UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
memcpy(c.d.asBytes, bs, size);
clearCommandBuffer();
SendCommand(&c);
return 0;
}
int CmdAWIDClone(const char *Cmd)
{
uint32_t fc=0,cn=0,blocks[4] = {0x00107060, 0, 0, 0x11111111}, i=0;
uint8_t BitStream[12];
uint8_t *BS=BitStream;
UsbCommand c, resp;
int CmdAWIDClone(const char *Cmd) {
uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
uint32_t fc=0,cn=0;
uint8_t BitStream[96];
uint8_t *bs=BitStream;
memset(bs,0,sizeof(BitStream));
if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) {
return usage_lf_awid_clone();
}
if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_clone();
if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 50<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
if ((fc & 0xFF) != fc) {
fc &= 0xFF;
@ -190,48 +150,58 @@ int CmdAWIDClone(const char *Cmd)
cn &= 0xFFFF;
PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
}
if (getAWIDBits(fc,cn,BS)) {
PrintAndLog("Preparing to clone AWID26 to T55x7 with FC: %u, CN: %u (Raw: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x)",
fc,cn, BS[0],BS[1],BS[2],BS[3],BS[4],BS[5],BS[6],BS[7],BS[8],BS[9],BS[10],BS[11]);
blocks[1] = (BS[0]<<24) + (BS[1]<<16) + (BS[2]<<8) + (BS[3]);
blocks[2] = (BS[4]<<24) + (BS[5]<<16) + (BS[6]<<8) + (BS[7]);
PrintAndLog("Block 0: 0x%08x", blocks[0]);
PrintAndLog("Block 1: 0x%08x", blocks[1]);
PrintAndLog("Block 2: 0x%08x", blocks[2]);
PrintAndLog("Block 3: 0x%08x", blocks[3]);
for (i=0; i<4; i++) {
c.cmd = CMD_T55XX_WRITE_BLOCK;
c.arg[0] = blocks[i];
c.arg[1] = i;
c.arg[2] = 0;
SendCommand(&c);
if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
PrintAndLog("Error occurred, device did not respond during write operation.");
return -1;
}
if ( !getAWIDBits(fc, cn, bs)) {
PrintAndLog("Error with tag bitstream generation.");
return 1;
}
blocks[1] = bytebits_to_byte(bs,32);
blocks[2] = bytebits_to_byte(bs+32,32);
blocks[3] = bytebits_to_byte(bs+64,32);
PrintAndLog("Preparing to clone AWID26 to T55x7 with FC: %u, CN: %u",
fc, cn);
PrintAndLog("Blk | Data ");
PrintAndLog("----+------------");
PrintAndLog(" 00 | 0x%08x", blocks[0]);
PrintAndLog(" 01 | 0x%08x", blocks[1]);
PrintAndLog(" 02 | 0x%08x", blocks[2]);
PrintAndLog(" 03 | 0x%08x", blocks[3]);
UsbCommand resp;
UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
for (uint8_t i=0; i<4; i++) {
c.cmd = CMD_T55XX_WRITE_BLOCK;
c.arg[0] = blocks[i];
c.arg[1] = i;
c.arg[2] = 0;
clearCommandBuffer();
SendCommand(&c);
if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
PrintAndLog("Error occurred, device did not respond during write operation.");
return -1;
}
}
return 0;
}
static command_t CommandTable[] =
{
{"help", CmdHelp, 1, "This help"},
static command_t CommandTable[] = {
{"help", CmdHelp, 1, "This help"},
{"fskdemod", CmdAWIDDemodFSK, 0, "['1'] Realtime AWID FSK demodulator (option '1' for one tag only)"},
{"sim", CmdAWIDSim, 0, "<Facility-Code> <Card Number> -- AWID tag simulator"},
{"clone", CmdAWIDClone, 0, "<Facility-Code> <Card Number> -- Clone AWID to T55x7 (tag must be in range of antenna)"},
{"clone", CmdAWIDClone, 0, "<Facility-Code> <Card Number> <Q5> -- Clone AWID to T55x7 (tag must be in range of antenna)"},
{NULL, NULL, 0, NULL}
};
int CmdLFAWID(const char *Cmd)
{
int CmdLFAWID(const char *Cmd) {
CmdsParse(CommandTable, Cmd);
return 0;
}
int CmdHelp(const char *Cmd)
{
int CmdHelp(const char *Cmd) {
CmdsHelp(CommandTable);
return 0;
}

4
client/cmdlfio.c
View file

@ -67,9 +67,9 @@ int CmdIOClone(const char *Cmd)
static command_t CommandTable[] =
{
{"help", CmdHelp, 1, "This help"},
//{"demod", CmdIOProxDemod, 1, "Demodulate Stream"},
//{"demod", CmdIOProxDemod, 1, "Demodulate Stream"},
{"fskdemod", CmdIODemodFSK, 0, "['1'] Realtime IO FSK demodulator (option '1' for one tag only)"},
{"clone", CmdIOClone, 0, "Clone ioProx Tag"},
{"clone", CmdIOClone, 0, "Clone ioProx Tag"},
{NULL, NULL, 0, NULL}
};

500
client/cmdlft55xx.c
View file

@ -26,12 +26,14 @@
#include "../common/iso14443crc.h"
#include "cmdhf14a.h"
#define CONFIGURATION_BLOCK 0x00
#define TRACE_BLOCK 0x01
#define T55x7_CONFIGURATION_BLOCK 0x00
#define T55x7_PAGE0 0x00
#define T55x7_PAGE1 0x01
#define T55x7_PWD 0x00000010
#define REGULAR_READ_MODE_BLOCK 0xFF
// Default configuration
t55xx_conf_block_t config = { .modulation = DEMOD_ASK, .inverted = FALSE, .offset = 0x00, .block0 = 0x00};
t55xx_conf_block_t config = { .modulation = DEMOD_ASK, .inverted = FALSE, .offset = 0x00, .block0 = 0x00, .Q5 = FALSE };
t55xx_conf_block_t Get_t55xx_Config(){
return config;
@ -41,13 +43,14 @@ void Set_t55xx_Config(t55xx_conf_block_t conf){
}
int usage_t55xx_config(){
PrintAndLog("Usage: lf t55xx config [d <demodulation>] [i 1] [o <offset>]");
PrintAndLog("Usage: lf t55xx config [d <demodulation>] [i 1] [o <offset>] [Q5]");
PrintAndLog("Options:");
PrintAndLog(" h This help");
PrintAndLog(" b <8|16|32|40|50|64|100|128> Set bitrate");
PrintAndLog(" b <8|16|32|40|50|64|100|128> Set bitrate");
PrintAndLog(" d <FSK|FSK1|FSK1a|FSK2|FSK2a|ASK|PSK1|PSK2|NRZ|BI|BIa> Set demodulation FSK / ASK / PSK / NRZ / Biphase / Biphase A");
PrintAndLog(" i [1] Invert data signal, defaults to normal");
PrintAndLog(" o [offset] Set offset, where data should start decode in bitstream");
PrintAndLog(" i [1] Invert data signal, defaults to normal");
PrintAndLog(" o [offset] Set offset, where data should start decode in bitstream");
PrintAndLog(" Q5 Set as Q5(T5555) chip instead of T55x7");
PrintAndLog("");
PrintAndLog("Examples:");
PrintAndLog(" lf t55xx config d FSK - FSK demodulation");
@ -123,13 +126,15 @@ int usage_t55xx_dump(){
return 0;
}
int usage_t55xx_detect(){
PrintAndLog("Usage: lf t55xx detect [1]");
PrintAndLog("Usage: lf t55xx detect [1] [p <password>]");
PrintAndLog("Options:");
PrintAndLog(" [graph buffer data] - if set, use Graphbuffer otherwise read data from tag.");
PrintAndLog(" 1 - if set, use Graphbuffer otherwise read data from tag.");
PrintAndLog(" p <password> - OPTIONAL password (8 hex characters)");
PrintAndLog("");
PrintAndLog("Examples:");
PrintAndLog(" lf t55xx detect");
PrintAndLog(" lf t55xx detect 1");
PrintAndLog(" lf t55xx detect p 11223344");
PrintAndLog("");
return 0;
}
@ -144,9 +149,32 @@ int usage_t55xx_wakup(){
PrintAndLog(" lf t55xx wakeup p 11223344 - send wakeup password");
return 0;
}
int usage_t55xx_bruteforce(){
PrintAndLog("This command uses A) bruteforce to scan a number range");
PrintAndLog(" B) a dictionary attack");
PrintAndLog("Usage: lf t55xx bruteforce <start password> <end password> [i <*.dic>]");
PrintAndLog(" password must be 4 bytes (8 hex symbols)");
PrintAndLog("Options:");
PrintAndLog(" h - this help");
PrintAndLog(" <start_pwd> - 4 byte hex value to start pwd search at");
PrintAndLog(" <end_pwd> - 4 byte hex value to end pwd search at");
PrintAndLog(" i <*.dic> - loads a default keys dictionary file <*.dic>");
PrintAndLog("");
PrintAndLog("Examples:");
PrintAndLog(" lf t55xx bruteforce aaaaaaaa bbbbbbbb");
PrintAndLog(" lf t55xx bruteforce i default_pwd.dic");
PrintAndLog("");
return 0;
}
static int CmdHelp(const char *Cmd);
void printT5xxHeader(uint8_t page){
PrintAndLog("Reading Page %d:", page);
PrintAndLog("blk | hex data | binary");
PrintAndLog("----+----------+---------------------------------");
}
int CmdT55xxSetConfig(const char *Cmd) {
uint8_t offset = 0;
@ -155,6 +183,7 @@ int CmdT55xxSetConfig(const char *Cmd) {
uint8_t bitRate = 0;
uint8_t rates[9] = {8,16,32,40,50,64,100,128,0};
uint8_t cmdp = 0;
config.Q5 = FALSE;
bool errors = FALSE;
while(param_getchar(Cmd, cmdp) != 0x00 && !errors)
{
@ -227,6 +256,11 @@ int CmdT55xxSetConfig(const char *Cmd) {
config.offset = offset;
cmdp+=2;
break;
case 'Q':
case 'q':
config.Q5 = TRUE;
cmdp++;
break;
default:
PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
errors = TRUE;
@ -249,7 +283,7 @@ int T55xxReadBlock(uint8_t block, bool page1, bool usepwd, bool override, uint32
if ( usepwd ) {
// try reading the config block and verify that PWD bit is set before doing this!
if ( !override ) {
if ( !AquireData(0, CONFIGURATION_BLOCK, false, 0 ) ) return 0;
if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, false, 0 ) ) return 0;
if ( !tryDetectModulation() ) {
PrintAndLog("Safety Check: Could not detect if PWD bit is set in config block. Exits.");
return 0;
@ -317,8 +351,8 @@ int CmdT55xxReadBlock(const char *Cmd) {
PrintAndLog("Block must be between 0 and 7");
return 0;
}
PrintAndLog("Reading Page %d:", page1);
PrintAndLog("blk | hex data | binary");
printT5xxHeader(page1);
return T55xxReadBlock(block, page1, usepwd, override, password);
}
@ -346,18 +380,28 @@ bool DecodeT55xxBlock(){
ans = FSKrawDemod(cmdStr, FALSE);
break;
case DEMOD_ASK:
snprintf(cmdStr, sizeof(buf),"%d %d 0", bitRate[config.bitrate], config.inverted );
snprintf(cmdStr, sizeof(buf),"%d %d 1", bitRate[config.bitrate], config.inverted );
ans = ASKDemod(cmdStr, FALSE, FALSE, 1);
break;
case DEMOD_PSK1:
snprintf(cmdStr, sizeof(buf),"%d %d 0", bitRate[config.bitrate], config.inverted );
// skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
save_restoreGB(1);
CmdLtrim("160");
snprintf(cmdStr, sizeof(buf),"%d %d 6", bitRate[config.bitrate], config.inverted );
ans = PSKDemod(cmdStr, FALSE);
//undo trim samples
save_restoreGB(0);
break;
case DEMOD_PSK2: //inverted won't affect this
case DEMOD_PSK3: //not fully implemented
snprintf(cmdStr, sizeof(buf),"%d 0 1", bitRate[config.bitrate] );
// skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
save_restoreGB(1);
CmdLtrim("160");
snprintf(cmdStr, sizeof(buf),"%d 0 6", bitRate[config.bitrate] );
ans = PSKDemod(cmdStr, FALSE);
psk1TOpsk2(DemodBuffer, DemodBufferLen);
//undo trim samples
save_restoreGB(0);
break;
case DEMOD_NRZ:
snprintf(cmdStr, sizeof(buf),"%d %d 1", bitRate[config.bitrate], config.inverted );
@ -365,7 +409,7 @@ bool DecodeT55xxBlock(){
break;
case DEMOD_BI:
case DEMOD_BIa:
snprintf(cmdStr, sizeof(buf),"0 %d %d 0", bitRate[config.bitrate], config.inverted );
snprintf(cmdStr, sizeof(buf),"0 %d %d 1", bitRate[config.bitrate], config.inverted );
ans = ASKbiphaseDemod(cmdStr, FALSE);
break;
default:
@ -375,15 +419,41 @@ bool DecodeT55xxBlock(){
}
int CmdT55xxDetect(const char *Cmd){
bool errors = FALSE;
bool useGB = FALSE;
bool usepwd = FALSE;
uint32_t password = 0;
uint8_t cmdp = 0;
char cmdp = param_getchar(Cmd, 0);
if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H')
return usage_t55xx_detect();
while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
switch(param_getchar(Cmd, cmdp)) {
case 'h':
case 'H':
return usage_t55xx_detect();
case 'p':
case 'P':
password = param_get32ex(Cmd, cmdp+1, 0, 16);
usepwd = TRUE;
cmdp += 2;
break;
case '1':
// use Graphbuffer data
useGB = TRUE;
cmdp++;
break;
default:
PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
errors = true;
break;
}
}
if (errors) return usage_t55xx_detect();
if (strlen(Cmd)==0)
if ( !AquireData(0, CONFIGURATION_BLOCK, false, 0) )
if ( !useGB) {
if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, usepwd, password) )
return 0;
}
if ( !tryDetectModulation() )
PrintAndLog("Could not detect modulation automatically. Try setting it manually with \'lf t55xx config\'");
@ -396,21 +466,21 @@ bool tryDetectModulation(){
t55xx_conf_block_t tests[15];
int bitRate=0;
uint8_t fc1 = 0, fc2 = 0, clk=0;
save_restoreGB(1);
if (GetFskClock("", FALSE, FALSE)){
fskClocks(&fc1, &fc2, &clk, FALSE);
if ( FSKrawDemod("0 0", FALSE) && test(DEMOD_FSK, &tests[hits].offset, &bitRate)){
if ( FSKrawDemod("0 0", FALSE) && test(DEMOD_FSK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
tests[hits].modulation = DEMOD_FSK;
if (fc1==8 && fc2 == 5)
tests[hits].modulation = DEMOD_FSK1a;
else if (fc1==10 && fc2 == 8)
else if (fc1==10 && fc2 == 8)
tests[hits].modulation = DEMOD_FSK2;
tests[hits].bitrate = bitRate;
tests[hits].inverted = FALSE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
if ( FSKrawDemod("0 1", FALSE) && test(DEMOD_FSK, &tests[hits].offset, &bitRate)) {
if ( FSKrawDemod("0 1", FALSE) && test(DEMOD_FSK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
tests[hits].modulation = DEMOD_FSK;
if (fc1 == 8 && fc2 == 5)
tests[hits].modulation = DEMOD_FSK1;
@ -425,28 +495,28 @@ bool tryDetectModulation(){
} else {
clk = GetAskClock("", FALSE, FALSE);
if (clk>0) {
if ( ASKDemod("0 0 0", FALSE, FALSE, 1) && test(DEMOD_ASK, &tests[hits].offset, &bitRate)) {
if ( ASKDemod("0 0 1", FALSE, FALSE, 1) && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
tests[hits].modulation = DEMOD_ASK;
tests[hits].bitrate = bitRate;
tests[hits].inverted = FALSE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
if ( ASKDemod("0 1 0", FALSE, FALSE, 1) && test(DEMOD_ASK, &tests[hits].offset, &bitRate)) {
if ( ASKDemod("0 1 1", FALSE, FALSE, 1) && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
tests[hits].modulation = DEMOD_ASK;
tests[hits].bitrate = bitRate;
tests[hits].inverted = TRUE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
if ( ASKbiphaseDemod("0 0 0 0", FALSE) && test(DEMOD_BI, &tests[hits].offset, &bitRate) ) {
if ( ASKbiphaseDemod("0 0 0 2", FALSE) && test(DEMOD_BI, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5) ) {
tests[hits].modulation = DEMOD_BI;
tests[hits].bitrate = bitRate;
tests[hits].inverted = FALSE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
if ( ASKbiphaseDemod("0 0 1 0", FALSE) && test(DEMOD_BIa, &tests[hits].offset, &bitRate) ) {
if ( ASKbiphaseDemod("0 0 1 2", FALSE) && test(DEMOD_BIa, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5) ) {
tests[hits].modulation = DEMOD_BIa;
tests[hits].bitrate = bitRate;
tests[hits].inverted = TRUE;
@ -455,10 +525,10 @@ bool tryDetectModulation(){
}
}
//undo trim from ask
save_restoreGB(0);
//save_restoreGB(0);
clk = GetNrzClock("", FALSE, FALSE);
if (clk>0) {
if ( NRZrawDemod("0 0 1", FALSE) && test(DEMOD_NRZ, &tests[hits].offset, &bitRate)) {
if ( NRZrawDemod("0 0 1", FALSE) && test(DEMOD_NRZ, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
tests[hits].modulation = DEMOD_NRZ;
tests[hits].bitrate = bitRate;
tests[hits].inverted = FALSE;
@ -466,7 +536,7 @@ bool tryDetectModulation(){
++hits;
}
if ( NRZrawDemod("0 1 1", FALSE) && test(DEMOD_NRZ, &tests[hits].offset, &bitRate)) {
if ( NRZrawDemod("0 1 1", FALSE) && test(DEMOD_NRZ, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
tests[hits].modulation = DEMOD_NRZ;
tests[hits].bitrate = bitRate;
tests[hits].inverted = TRUE;
@ -475,18 +545,20 @@ bool tryDetectModulation(){
}
}
//undo trim from nrz
save_restoreGB(0);
// allow undo
// skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
save_restoreGB(1);
CmdLtrim("160");
clk = GetPskClock("", FALSE, FALSE);
if (clk>0) {
if ( PSKDemod("0 0 1", FALSE) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate)) {
if ( PSKDemod("0 0 6", FALSE) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
tests[hits].modulation = DEMOD_PSK1;
tests[hits].bitrate = bitRate;
tests[hits].inverted = FALSE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
if ( PSKDemod("0 1 1", FALSE) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate)) {
if ( PSKDemod("0 1 6", FALSE) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
tests[hits].modulation = DEMOD_PSK1;
tests[hits].bitrate = bitRate;
tests[hits].inverted = TRUE;
@ -494,9 +566,9 @@ bool tryDetectModulation(){
++hits;
}
// PSK2 - needs a call to psk1TOpsk2.
if ( PSKDemod("0 0 1", FALSE)) {
if ( PSKDemod("0 0 6", FALSE)) {
psk1TOpsk2(DemodBuffer, DemodBufferLen);
if (test(DEMOD_PSK2, &tests[hits].offset, &bitRate)){
if (test(DEMOD_PSK2, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
tests[hits].modulation = DEMOD_PSK2;
tests[hits].bitrate = bitRate;
tests[hits].inverted = FALSE;
@ -505,9 +577,9 @@ bool tryDetectModulation(){
}
} // inverse waves does not affect this demod
// PSK3 - needs a call to psk1TOpsk2.
if ( PSKDemod("0 0 1", FALSE)) {
if ( PSKDemod("0 0 6", FALSE)) {
psk1TOpsk2(DemodBuffer, DemodBufferLen);
if (test(DEMOD_PSK3, &tests[hits].offset, &bitRate)){
if (test(DEMOD_PSK3, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
tests[hits].modulation = DEMOD_PSK3;
tests[hits].bitrate = bitRate;
tests[hits].inverted = FALSE;
@ -516,7 +588,9 @@ bool tryDetectModulation(){
}
} // inverse waves does not affect this demod
}
}
//undo trim samples
save_restoreGB(0);
}
if ( hits == 1) {
config.modulation = tests[0].modulation;
config.bitrate = tests[0].bitrate;
@ -569,37 +643,28 @@ bool testModulation(uint8_t mode, uint8_t modread){
return FALSE;
}
bool testBitRate(uint8_t readRate, uint8_t mod){
uint8_t expected[8] = {8, 16, 32, 40, 50, 64, 100, 128};
uint8_t detRate = 0;
switch( mod ){
bool testQ5Modulation(uint8_t mode, uint8_t modread){
switch( mode ){
case DEMOD_FSK:
case DEMOD_FSK1:
case DEMOD_FSK1a:
case DEMOD_FSK2:
case DEMOD_FSK2a:
detRate = GetFskClock("",FALSE, FALSE);
if (expected[readRate] == detRate)
return TRUE;
if (modread >= 4 && modread <= 5) return TRUE;
break;
case DEMOD_ASK:
case DEMOD_BI:
case DEMOD_BIa:
detRate = GetAskClock("",FALSE, FALSE);
if (expected[readRate] == detRate)
return TRUE;
if (modread == 0) return TRUE;
break;
case DEMOD_PSK1:
if (modread == 1) return TRUE;
break;
case DEMOD_PSK2:
if (modread == 2) return TRUE;
break;
case DEMOD_PSK3:
detRate = GetPskClock("",FALSE, FALSE);
if (expected[readRate] == detRate)
return TRUE;
if (modread == 3) return TRUE;
break;
case DEMOD_NRZ:
detRate = GetNrzClock("",FALSE, FALSE);
if (expected[readRate] == detRate)
return TRUE;
if (modread == 7) return TRUE;
break;
case DEMOD_BI:
if (modread == 6) return TRUE;
break;
default:
return FALSE;
@ -607,13 +672,60 @@ bool testBitRate(uint8_t readRate, uint8_t mod){
return FALSE;
}
bool test(uint8_t mode, uint8_t *offset, int *fndBitRate){
bool testQ5(uint8_t mode, uint8_t *offset, int *fndBitRate, uint8_t clk){
if ( DemodBufferLen < 64 ) return FALSE;
uint8_t si = 0;
for (uint8_t idx = 0; idx < 64; idx++){
for (uint8_t idx = 28; idx < 64; idx++){
si = idx;
if ( PackBits(si, 32, DemodBuffer) == 0x00 ) continue;
if ( PackBits(si, 28, DemodBuffer) == 0x00 ) continue;
uint8_t safer = PackBits(si, 4, DemodBuffer); si += 4; //master key
uint8_t resv = PackBits(si, 8, DemodBuffer); si += 8;
// 2nibble must be zeroed.
if (safer != 0x6) continue;
if ( resv > 0x00) continue;
//uint8_t pageSel = PackBits(si, 1, DemodBuffer); si += 1;
//uint8_t fastWrite = PackBits(si, 1, DemodBuffer); si += 1;
si += 1+1;
int bitRate = PackBits(si, 5, DemodBuffer)*2 + 2; si += 5; //bit rate
if (bitRate > 128 || bitRate < 8) continue;
//uint8_t AOR = PackBits(si, 1, DemodBuffer); si += 1;
//uint8_t PWD = PackBits(si, 1, DemodBuffer); si += 1;
//uint8_t pskcr = PackBits(si, 2, DemodBuffer); si += 2; //could check psk cr
//uint8_t inverse = PackBits(si, 1, DemodBuffer); si += 1;
si += 1+1+2+1;
uint8_t modread = PackBits(si, 3, DemodBuffer); si += 3;
uint8_t maxBlk = PackBits(si, 3, DemodBuffer); si += 3;
//uint8_t ST = PackBits(si, 1, DemodBuffer); si += 1;
if (maxBlk == 0) continue;
//test modulation
if (!testQ5Modulation(mode, modread)) continue;
if (bitRate != clk) continue;
*fndBitRate = bitRate;
*offset = idx;
return TRUE;
}
return FALSE;
}
bool testBitRate(uint8_t readRate, uint8_t clk){
uint8_t expected[] = {8, 16, 32, 40, 50, 64, 100, 128};
if (expected[readRate] == clk)
return true;
return false;
}
bool test(uint8_t mode, uint8_t *offset, int *fndBitRate, uint8_t clk, bool *Q5){
if ( DemodBufferLen < 64 ) return FALSE;
uint8_t si = 0;
for (uint8_t idx = 28; idx < 64; idx++){
si = idx;
if ( PackBits(si, 28, DemodBuffer) == 0x00 ) continue;
uint8_t safer = PackBits(si, 4, DemodBuffer); si += 4; //master key
uint8_t resv = PackBits(si, 4, DemodBuffer); si += 4; //was 7 & +=7+3 //should be only 4 bits if extended mode
@ -622,7 +734,7 @@ bool test(uint8_t mode, uint8_t *offset, int *fndBitRate){
if ( resv > 0x00) continue;
uint8_t xtRate = PackBits(si, 3, DemodBuffer); si += 3; //extended mode part of rate
int bitRate = PackBits(si, 3, DemodBuffer); si += 3; //bit rate
int bitRate = PackBits(si, 3, DemodBuffer); si += 3; //bit rate
if (bitRate > 7) continue;
uint8_t extend = PackBits(si, 1, DemodBuffer); si += 1; //bit 15 extended mode
uint8_t modread = PackBits(si, 5, DemodBuffer); si += 5+2+1;
@ -638,9 +750,14 @@ bool test(uint8_t mode, uint8_t *offset, int *fndBitRate){
}
//test modulation
if (!testModulation(mode, modread)) continue;
if (!testBitRate(bitRate, mode)) continue;
if (!testBitRate(bitRate, clk)) continue;
*fndBitRate = bitRate;
*offset = idx;
*Q5 = FALSE;
return TRUE;
}
if (testQ5(mode, offset, fndBitRate, clk)) {
*Q5 = TRUE;
return TRUE;
}
return FALSE;
@ -664,6 +781,7 @@ void printT55xxBlock(const char *blockNum){
bits[i - config.offset]=DemodBuffer[i];
blockData = PackBits(0, 32, bits);
PrintAndLog(" %s | %08X | %s", blockNum, blockData, sprint_bin(bits,32));
}
@ -687,6 +805,7 @@ int special(const char *Cmd) {
}
int printConfiguration( t55xx_conf_block_t b){
PrintAndLog("Chip Type : %s", (b.Q5) ? "T5555(Q5)" : "T55x7");
PrintAndLog("Modulation : %s", GetSelectedModulationStr(b.modulation) );
PrintAndLog("Bit Rate : %s", GetBitRateStr(b.bitrate) );
PrintAndLog("Inverted : %s", (b.inverted) ? "Yes" : "No" );
@ -728,8 +847,8 @@ int CmdT55xxWakeUp(const char *Cmd) {
int CmdT55xxWriteBlock(const char *Cmd) {
uint8_t block = 0xFF; //default to invalid block
uint32_t data = 0xFFFFFFFF; //default to blank Block
uint32_t password = 0xFFFFFFFF; //default to blank Block 7
uint32_t data = 0; //default to blank Block
uint32_t password = 0; //default to blank Block 7
bool usepwd = false;
bool page1 = false;
bool gotdata = false;
@ -778,13 +897,15 @@ int CmdT55xxWriteBlock(const char *Cmd) {
UsbCommand resp;
c.d.asBytes[0] = (page1) ? 0x2 : 0;
PrintAndLog("Writing to page: %d block: %d data : 0x%08X", page1, block, data);
char pwdStr[16] = {0};
snprintf(pwdStr, sizeof(pwdStr), "pwd: 0x%08X", password);
PrintAndLog("Writing page %d block: %02d data: 0x%08X %s", page1, block, data, (usepwd) ? pwdStr : "" );
//Password mode
if (usepwd) {
c.arg[2] = password;
c.d.asBytes[0] |= 0x1;
PrintAndLog("pwd : 0x%08X", password);
}
clearCommandBuffer();
SendCommand(&c);
@ -803,7 +924,7 @@ int CmdT55xxReadTrace(const char *Cmd) {
return usage_t55xx_trace();
if (strlen(Cmd)==0)
if ( !AquireData( TRACE_BLOCK, REGULAR_READ_MODE_BLOCK, pwdmode, password ) )
if ( !AquireData( T55x7_PAGE1, REGULAR_READ_MODE_BLOCK, pwdmode, password ) )
return 0;
if (!DecodeT55xxBlock()) return 0;
@ -835,11 +956,11 @@ int CmdT55xxReadTrace(const char *Cmd) {
else
year += 2010;
if (config.Q5) PrintAndLog("*** Warning *** Info read off a Q5 will not work as expected");
if ( acl != 0xE0 ) {
PrintAndLog("The modulation is most likely wrong since the ACL is not 0xE0. ");
return 0;
}
PrintAndLog("");
PrintAndLog("-- T55xx Trace Information ----------------------------------");
PrintAndLog("-------------------------------------------------------------");
@ -892,7 +1013,7 @@ int CmdT55xxInfo(const char *Cmd){
return usage_t55xx_info();
if (strlen(Cmd)==0)
if ( !AquireData( 0, CONFIGURATION_BLOCK, pwdmode, password ) )
if ( !AquireData( T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, pwdmode, password ) )
return 1;
if (!DecodeT55xxBlock()) return 1;
@ -916,7 +1037,7 @@ int CmdT55xxInfo(const char *Cmd){
uint32_t fw = PackBits(si, 1, DemodBuffer); si += 1;
uint32_t inv = PackBits(si, 1, DemodBuffer); si += 1;
uint32_t por = PackBits(si, 1, DemodBuffer); si += 1;
if (config.Q5) PrintAndLog("*** Warning *** Config Info read off a Q5 will not display as expected");
PrintAndLog("");
PrintAndLog("-- T55xx Configuration & Tag Information --------------------");
PrintAndLog("-------------------------------------------------------------");
@ -956,32 +1077,21 @@ int CmdT55xxDump(const char *Cmd){
override = true;
}
PrintAndLog("Reading Page 0:");
PrintAndLog("blk | hex data | binary");
for ( uint8_t i = 0; i <8; ++i){
printT5xxHeader(0);
for ( uint8_t i = 0; i <8; ++i)
T55xxReadBlock(i, 0, usepwd, override, password);
/*memset(s,0,sizeof(s));
if ( hasPwd ) {
if ( override ) {
sprintf(s,"b %d p %02x%02x%02x%02x o", i, pwd[0],pwd[1],pwd[2],pwd[3]);
} else {
sprintf(s,"b %d p %02x%02x%02x%02x", i, pwd[0],pwd[1],pwd[2],pwd[3]);
}
} else {
sprintf(s,"b %d", i);
}
CmdT55xxReadBlock(s);*/
}
PrintAndLog("Reading Page 1:");
PrintAndLog("blk | hex data | binary");
for ( uint8_t i = 0; i<4; i++){
printT5xxHeader(1);
for ( uint8_t i = 0; i<4; i++)
T55xxReadBlock(i, 1, usepwd, override, password);
}
return 1;
}
int AquireData( uint8_t page, uint8_t block, bool pwdmode, uint32_t password ){
// arg0 bitmodes:
// bit0 = pwdmode
// bit1 = page to read from
uint8_t arg0 = (page<<1) | pwdmode;
UsbCommand c = {CMD_T55XX_READ_BLOCK, {arg0, block, password}};
@ -1189,30 +1299,192 @@ int CmdResetRead(const char *Cmd) {
return 1;
}
static command_t CommandTable[] =
{
{"help", CmdHelp, 1, "This help"},
{"config", CmdT55xxSetConfig, 1, "Set/Get T55XX configuration (modulation, inverted, offset, rate)"},
{"detect", CmdT55xxDetect, 0, "[1] Try detecting the tag modulation from reading the configuration block."},
{"read", CmdT55xxReadBlock, 0, "b <block> p [password] [o] [1] -- Read T55xx block data. Optional [p password], [override], [page1]"},
{"resetread",CmdResetRead, 0, "Send Reset Cmd then lf read the stream to attempt to identify the start of it (needs a demod and/or plot after)"},
{"write", CmdT55xxWriteBlock,0, "b <block> d <data> p [password] [1] -- Write T55xx block data. Optional [p password], [page1]"},
{"trace", CmdT55xxReadTrace, 0, "[1] Show T55xx traceability data (page 1/ blk 0-1)"},
{"info", CmdT55xxInfo, 0, "[1] Show T55xx configuration data (page 0/ blk 0)"},
{"dump", CmdT55xxDump, 0, "[password] [o] Dump T55xx card block 0-7. Optional [password], [override]"},
{"special", special, 0, "Show block changes with 64 different offsets"},
{"wakeup", CmdT55xxWakeUp, 0, "Send AOR wakeup command"},
int CmdT55xxWipe(const char *Cmd) {
char writeData[20] = {0};
char *ptrData = writeData;
PrintAndLog("\nBeginning Wipe of a T55xx tag (assuming the tag is not password protected)\n");
//try with the default password to reset block 0 (with a pwd should work even if pwd bit not set)
snprintf(ptrData,sizeof(writeData),"b 0 d 00088040 p 0");
if (!CmdT55xxWriteBlock(ptrData))
PrintAndLog("Error writing blk 0");
for (uint8_t blk = 1; blk<8; blk++) {
snprintf(ptrData,sizeof(writeData),"b %d d 0", blk);
if (!CmdT55xxWriteBlock(ptrData))
PrintAndLog("Error writing blk %d", blk);
memset(writeData, 0x00, sizeof(writeData));
}
return 0;
}
int CmdT55xxBruteForce(const char *Cmd) {
// load a default pwd file.
char buf[9];
char filename[FILE_PATH_SIZE]={0};
int keycnt = 0;
uint8_t stKeyBlock = 20;
uint8_t *keyBlock = NULL, *p;
keyBlock = calloc(stKeyBlock, 6);
if (keyBlock == NULL) return 1;
uint32_t start_password = 0x00000000; //start password
uint32_t end_password = 0xFFFFFFFF; //end password
bool found = false;
char cmdp = param_getchar(Cmd, 0);
if (cmdp == 'h' || cmdp == 'H') return usage_t55xx_bruteforce();
if (cmdp == 'i' || cmdp == 'I') {
int len = strlen(Cmd+2);
if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
memcpy(filename, Cmd+2, len);
FILE * f = fopen( filename , "r");
if ( !f ) {
PrintAndLog("File: %s: not found or locked.", filename);
free(keyBlock);
return 1;
}
while( fgets(buf, sizeof(buf), f) ){
if (strlen(buf) < 8 || buf[7] == '\n') continue;
while (fgetc(f) != '\n' && !feof(f)) ; //goto next line
//The line start with # is comment, skip
if( buf[0]=='#' ) continue;
if (!isxdigit(buf[0])){
PrintAndLog("File content error. '%s' must include 8 HEX symbols", buf);
continue;
}
buf[8] = 0;
if ( stKeyBlock - keycnt < 2) {
p = realloc(keyBlock, 6*(stKeyBlock+=10));
if (!p) {
PrintAndLog("Cannot allocate memory for defaultKeys");
free(keyBlock);
return 2;
}
keyBlock = p;
}
memset(keyBlock + 4 * keycnt, 0, 4);
num_to_bytes(strtoll(buf, NULL, 16), 4, keyBlock + 4*keycnt);
PrintAndLog("chk custom pwd[%2d] %08X", keycnt, bytes_to_num(keyBlock + 4*keycnt, 4));
keycnt++;
memset(buf, 0, sizeof(buf));
}
fclose(f);
if (keycnt == 0) {
PrintAndLog("No keys found in file");
return 1;
}
PrintAndLog("Loaded %d keys", keycnt);
// loop
uint64_t testpwd = 0x00;
for (uint16_t c = 0; c < keycnt; ++c ) {
if (ukbhit()) {
getchar();
printf("\naborted via keyboard!\n");
return 0;
}
testpwd = bytes_to_num(keyBlock + 4*c, 4);
PrintAndLog("Testing %08X", testpwd);
if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, testpwd)) {
PrintAndLog("Aquireing data from device failed. Quitting");
return 0;
}
found = tryDetectModulation();
if ( found ) {
PrintAndLog("Found valid password: [%08X]", testpwd);
return 0;
}
}
PrintAndLog("Password NOT found.");
return 0;
}
// Try to read Block 7, first :)
// incremental pwd range search
start_password = param_get32ex(Cmd, 0, 0, 16);
end_password = param_get32ex(Cmd, 1, 0, 16);
if ( start_password >= end_password ) return usage_t55xx_bruteforce();
PrintAndLog("Search password range [%08X -> %08X]", start_password, end_password);
uint32_t i = start_password;
while ((!found) && (i <= end_password)){
printf(".");
fflush(stdout);
if (ukbhit()) {
getchar();
printf("\naborted via keyboard!\n");
return 0;
}
if (!AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, i)) {
PrintAndLog("Aquireing data from device failed. Quitting");
return 0;
}
found = tryDetectModulation();
if (found) break;
i++;
}
PrintAndLog("");
if (found)
PrintAndLog("Found valid password: [%08x]", i);
else
PrintAndLog("Password NOT found. Last tried: [%08x]", --i);
return 0;
}
static command_t CommandTable[] = {
{"help", CmdHelp, 1, "This help"},
{"bruteforce",CmdT55xxBruteForce,0, "<start password> <end password> [i <*.dic>] Simple bruteforce attack to find password"},
{"config", CmdT55xxSetConfig, 1, "Set/Get T55XX configuration (modulation, inverted, offset, rate)"},
{"detect", CmdT55xxDetect, 1, "[1] Try detecting the tag modulation from reading the configuration block."},
{"read", CmdT55xxReadBlock, 0, "b <block> p [password] [o] [1] -- Read T55xx block data. Optional [p password], [override], [page1]"},
{"resetread", CmdResetRead, 0, "Send Reset Cmd then lf read the stream to attempt to identify the start of it (needs a demod and/or plot after)"},
{"write", CmdT55xxWriteBlock,0, "b <block> d <data> p [password] [1] -- Write T55xx block data. Optional [p password], [page1]"},
{"trace", CmdT55xxReadTrace, 1, "[1] Show T55x7 traceability data (page 1/ blk 0-1)"},
{"info", CmdT55xxInfo, 1, "[1] Show T55x7 configuration data (page 0/ blk 0)"},
{"dump", CmdT55xxDump, 0, "[password] [o] Dump T55xx card block 0-7. Optional [password], [override]"},
{"special", special, 0, "Show block changes with 64 different offsets"},
{"wakeup", CmdT55xxWakeUp, 0, "Send AOR wakeup command"},
{"wipe", CmdT55xxWipe, 0, "Wipe a T55xx tag and set defaults (will destroy any data on tag)"},
{NULL, NULL, 0, NULL}
};
int CmdLFT55XX(const char *Cmd)
{
int CmdLFT55XX(const char *Cmd) {
CmdsParse(CommandTable, Cmd);
return 0;
}
int CmdHelp(const char *Cmd)
{
int CmdHelp(const char *Cmd) {
CmdsHelp(CommandTable);
return 0;
}

5
client/cmdlft55xx.h
View file

@ -38,12 +38,14 @@ typedef struct {
RF_100 = 0x06,
RF_128 = 0x07,
} bitrate;
bool Q5;
} t55xx_conf_block_t;
t55xx_conf_block_t Get_t55xx_Config();
void Set_t55xx_Config(t55xx_conf_block_t conf);
int CmdLFT55XX(const char *Cmd);
int CmdT55xxBruteForce(const char *Cmd);
int CmdT55xxSetConfig(const char *Cmd);
int CmdT55xxReadBlock(const char *Cmd);
int CmdT55xxWriteBlock(const char *Cmd);
@ -51,6 +53,7 @@ int CmdT55xxReadTrace(const char *Cmd);
int CmdT55xxInfo(const char *Cmd);
int CmdT55xxDetect(const char *Cmd);
int CmdResetRead(const char *Cmd);
int CmdT55xxWipe(const char *Cmd);
char * GetBitRateStr(uint32_t id);
char * GetSaferStr(uint32_t id);
@ -63,7 +66,7 @@ int printConfiguration( t55xx_conf_block_t b);
bool DecodeT55xxBlock();
bool tryDetectModulation();
bool test(uint8_t mode, uint8_t *offset, int *fndBitRate);
bool test(uint8_t mode, uint8_t *offset, int *fndBitRate, uint8_t clk, bool *Q5);
int special(const char *Cmd);
int AquireData( uint8_t page, uint8_t block, bool pwdmode, uint32_t password );

127
client/cmdlfviking.c Normal file
View file

@ -0,0 +1,127 @@
//-----------------------------------------------------------------------------
//
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
// Low frequency Viking tag commands
//-----------------------------------------------------------------------------
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include "proxmark3.h"
#include "ui.h"
#include "util.h"
#include "graph.h"
#include "cmdparser.h"
#include "cmddata.h"
#include "cmdmain.h"
#include "cmdlf.h"
#include "cmdlfviking.h"
#include "lfdemod.h"
static int CmdHelp(const char *Cmd);
int usage_lf_viking_clone(void) {
PrintAndLog("clone a Viking AM tag to a T55x7 tag.");
PrintAndLog("Usage: lf viking clone <Card ID - 8 hex digits> <Q5>");
PrintAndLog("Options :");
PrintAndLog(" <Card Number> : 8 digit hex viking card number");
PrintAndLog(" <Q5> : specify write to Q5 (t5555 instead of t55x7)");
PrintAndLog("");
PrintAndLog("Sample : lf viking clone 1A337 Q5");
return 0;
}
int usage_lf_viking_sim(void) {
PrintAndLog("Enables simulation of viking card with specified card number.");
PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
PrintAndLog("Per viking format, the card number is 8 digit hex number. Larger values are truncated.");
PrintAndLog("");
PrintAndLog("Usage: lf viking sim <Card-Number>");
PrintAndLog("Options :");
PrintAndLog(" <Card Number> : 8 digit hex viking card number");
PrintAndLog("");
PrintAndLog("Sample : lf viking sim 1A337");
return 0;
}
uint64_t getVikingBits(uint32_t id) {
//calc checksum
uint8_t checksum = (id>>24) ^ ((id>>16) & 0xFF) ^ ((id>>8) & 0xFF) ^ (id & 0xFF) ^ 0xF2 ^ 0xA8;
return ((uint64_t)0xF2 << 56) | (id << 8) | checksum;
}
//by marshmellow
//see ASKDemod for what args are accepted
int CmdVikingRead(const char *Cmd) {
// read lf silently
CmdLFRead("s");
// get samples silently
getSamples("30000",false);
// demod and output viking ID
return CmdVikingDemod(Cmd);
}
int CmdVikingClone(const char *Cmd) {
uint32_t id = 0;
uint64_t rawID = 0;
bool Q5 = false;
char cmdp = param_getchar(Cmd, 0);
if (strlen(Cmd) < 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_viking_clone();
id = param_get32ex(Cmd, 0, 0, 16);
if (id == 0) return usage_lf_viking_clone();
if (param_getchar(Cmd, 1)=='Q' || param_getchar(Cmd, 1)=='q')
Q5 = true;
rawID = getVikingBits(id);
UsbCommand c = {CMD_VIKING_CLONE_TAG,{rawID >> 32, rawID & 0xFFFF, Q5}};
clearCommandBuffer();
SendCommand(&c);
//check for ACK
WaitForResponse(CMD_ACK,NULL);
return 0;
}
int CmdVikingSim(const char *Cmd) {
uint32_t id = 0;
uint64_t rawID = 0;
uint8_t clk = 32, encoding = 1, separator = 0, invert = 0;
char cmdp = param_getchar(Cmd, 0);
if (strlen(Cmd) < 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_viking_sim();
id = param_get32ex(Cmd, 0, 0, 16);
if (id == 0) return usage_lf_viking_sim();
rawID = getVikingBits(id);
uint16_t arg1, arg2;
size_t size = 64;
arg1 = clk << 8 | encoding;
arg2 = invert << 8 | separator;
UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
PrintAndLog("preparing to sim ask data: %d bits", size);
num_to_bytebits(rawID, 64, c.d.asBytes);
clearCommandBuffer();
SendCommand(&c);
return 0;
}
static command_t CommandTable[] = {
{"help", CmdHelp, 1, "This help"},
{"read", CmdVikingRead, 0, "Attempt to read and Extract tag data"},
{"clone", CmdVikingClone, 0, "<8 digit ID number> clone viking tag"},
{"sim", CmdVikingSim, 0, "<8 digit ID number> simulate viking tag"},
{NULL, NULL, 0, NULL}
};
int CmdLFViking(const char *Cmd) {
CmdsParse(CommandTable, Cmd);
return 0;
}
int CmdHelp(const char *Cmd) {
CmdsHelp(CommandTable);
return 0;
}

16
client/cmdlfviking.h Normal file
View file

@ -0,0 +1,16 @@
//-----------------------------------------------------------------------------
//
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
// Low frequency T55xx commands
//-----------------------------------------------------------------------------
#ifndef CMDLFVIKING_H__
#define CMDLFVIKING_H__
int CmdLFViking(const char *Cmd);
int CmdVikingRead(const char *Cmd);
int CmdVikingClone(const char *Cmd);
int CmdVikingSim(const char *Cmd);
#endif

75
client/default_pwd.dic Normal file
View file

@ -0,0 +1,75 @@
# known cloners
# ref. http://www.proxmark.org/forum/viewtopic.php?id=2022
51243648,
000D8787,
# Default pwd, simple:
00000000,
11111111,
22222222,
33333333,
44444444,
55555555,
66666666,
77777777,
88888888,
99999999,
AAAAAAAA,
BBBBBBBB,
CCCCCCCC,
DDDDDDDD,
EEEEEEEE,
FFFFFFFF,
a0a1a2a3,
b0b1b2b3,
aabbccdd,
bbccddee,
ccddeeff,
00000001,
00000002,
0000000a,
0000000b,
01020304,
02030405,
03040506,
04050607,
05060708,
06070809,
0708090A,
08090A0B,
090A0B0C,
0A0B0C0D,
0B0C0D0E,
0C0D0E0F,
01234567,
12345678,
10000000,
20000000,
30000000,
40000000,
50000000,
60000000,
70000000,
80000000,
90000000,
A0000000,
B0000000,
C0000000,
D0000000,
E0000000,
F0000000,
10101010,
01010101,
11223344,
22334455,
33445566,
44556677,
55667788,
66778899,
778899AA,
8899AABB,
99AABBCC,
AABBCCDD,
BBCCDDEE,
CCDDEEFF,
0CB7E7FC, //rfidler?
FABADA11, //china?

1
client/hid-flasher/usb_cmd.h
View file

@ -85,6 +85,7 @@ typedef struct {
#define CMD_ASK_SIM_TAG 0x021F
#define CMD_PSK_SIM_TAG 0x0220
#define CMD_AWID_DEMOD_FSK 0x0221
#define CMD_VIKING_CLONE_TAG 0x0223
#define CMD_T55XX_WAKEUP 0x0224
/* CMD_SET_ADC_MUX: ext1 is 0 for lopkd, 1 for loraw, 2 for hipkd, 3 for hiraw */

1
client/lualibs/commands.lua
View file

@ -56,6 +56,7 @@ local _commands = {
CMD_ASK_SIM_TAG = 0x021F,
CMD_PSK_SIM_TAG = 0x0220,
CMD_AWID_DEMOD_FSK = 0x0221,
CMD_VIKING_CLONE_TAG = 0x0223,
CMD_T55XX_WAKEUP = 0x0224,
--/* CMD_SET_ADC_MUX: ext1 is 0 for lopkd, 1 for loraw, 2 for hipkd, 3 for hiraw */

41
client/util.c
View file

@ -9,11 +9,13 @@
//-----------------------------------------------------------------------------
#include "util.h"
#define MAX_BIN_BREAK_LENGTH (3072+384+1)
#ifndef _WIN32
#include <termios.h>
#include <sys/ioctl.h>
int ukbhit(void)
{
int cnt = 0;
@ -123,16 +125,30 @@ char *sprint_hex(const uint8_t *data, const size_t len) {
}
char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks) {
int maxLen = ( len > 1020) ? 1020 : len;
static char buf[1024];
memset(buf, 0x00, 1024);
// make sure we don't go beyond our char array memory
int max_len;
if (breaks==0)
max_len = ( len > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len;
else
max_len = ( len+(len/breaks) > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len+(len/breaks);
static char buf[MAX_BIN_BREAK_LENGTH]; // 3072 + end of line characters if broken at 8 bits
//clear memory
memset(buf, 0x00, sizeof(buf));
char *tmp = buf;
for (size_t i=0; i < maxLen; ++i){
sprintf(tmp++, "%u", data[i]);
if (breaks > 0 && !((i+1) % breaks))
size_t in_index = 0;
// loop through the out_index to make sure we don't go too far
for (size_t out_index=0; out_index < max_len; out_index++) {
// set character
sprintf(tmp++, "%u", data[in_index]);
// check if a line break is needed
if ( (breaks > 0) && !((in_index+1) % breaks) && (out_index+1 != max_len) ) {
// increment and print line break
out_index++;
sprintf(tmp++, "%s","\n");
}
in_index++;
}
return buf;
@ -160,6 +176,13 @@ uint64_t bytes_to_num(uint8_t* src, size_t len)
return num;
}
void num_to_bytebits(uint64_t n, size_t len, uint8_t *dest) {
while (len--) {
dest[len] = n & 1;
n >>= 1;
}
}
// aa,bb,cc,dd,ee,ff,gg,hh, ii,jj,kk,ll,mm,nn,oo,pp
// to
// hh,gg,ff,ee,dd,cc,bb,aa, pp,oo,nn,mm,ll,kk,jj,ii
@ -446,7 +469,7 @@ void binarraytobinstring(char *target, char *source, int length)
}
// return parity bit required to match type
uint8_t GetParity( char *bits, uint8_t type, int length)
uint8_t GetParity( uint8_t *bits, uint8_t type, int length)
{
int x;
@ -458,7 +481,7 @@ uint8_t GetParity( char *bits, uint8_t type, int length)
}
// add HID parity to binary array: EVEN prefix for 1st half of ID, ODD suffix for 2nd half
void wiegand_add_parity(char *target, char *source, char length)
void wiegand_add_parity(uint8_t *target, uint8_t *source, uint8_t length)
{
*(target++)= GetParity(source, EVEN, length / 2);
memcpy(target, source, length);

5
client/util.h
View file

@ -43,6 +43,7 @@ char * sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t bre
void num_to_bytes(uint64_t n, size_t len, uint8_t* dest);
uint64_t bytes_to_num(uint8_t* src, size_t len);
void num_to_bytebits(uint64_t n, size_t len, uint8_t *dest);
char * printBits(size_t const size, void const * const ptr);
uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockSize);
@ -62,8 +63,8 @@ int param_getstr(const char *line, int paramnum, char * str);
int hextobinstring( char *target, char *source);
int binarraytohex( char *target, char *source, int length);
void binarraytobinstring(char *target, char *source, int length);
uint8_t GetParity( char *string, uint8_t type, int length);
void wiegand_add_parity(char *target, char *source, char length);
uint8_t GetParity( uint8_t *string, uint8_t type, int length);
void wiegand_add_parity(uint8_t *target, uint8_t *source, uint8_t length);
void xor(unsigned char *dst, unsigned char *src, size_t len);
int32_t le24toh(uint8_t data[3]);

531
common/lfdemod.c
View file

@ -11,6 +11,21 @@
#include <stdlib.h>
#include <string.h>
#include "lfdemod.h"
#include "common.h"
//un_comment to allow debug print calls when used not on device
void dummy(char *fmt, ...){}
#ifndef ON_DEVICE
#include "ui.h"
#include "cmdparser.h"
#include "cmddata.h"
#define prnt PrintAndLog
#else
uint8_t g_debugMode=0;
#define prnt dummy
#endif
uint8_t justNoise(uint8_t *BitStream, size_t size)
{
static const uint8_t THRESHOLD = 123;
@ -52,6 +67,81 @@ uint8_t parityTest(uint32_t bits, uint8_t bitLen, uint8_t pType)
return (ans == pType);
}
// by marshmellow
// takes a array of binary values, start position, length of bits per parity (includes parity bit),
// Parity Type (1 for odd; 0 for even; 2 Always 1's), and binary Length (length to run)
size_t removeParity(uint8_t *BitStream, size_t startIdx, uint8_t pLen, uint8_t pType, size_t bLen)
{
uint32_t parityWd = 0;
size_t j = 0, bitCnt = 0;
for (int word = 0; word < (bLen); word+=pLen){
for (int bit=0; bit < pLen; bit++){
parityWd = (parityWd << 1) | BitStream[startIdx+word+bit];
BitStream[j++] = (BitStream[startIdx+word+bit]);
}
j--; // overwrite parity with next data
// if parity fails then return 0
if (pType == 2) { // then marker bit which should be a 1
if (!BitStream[j]) return 0;
} else {
if (parityTest(parityWd, pLen, pType) == 0) return 0;
}
bitCnt+=(pLen-1);
parityWd = 0;
}
// if we got here then all the parities passed
//return ID start index and size
return bitCnt;
}
// by marshmellow
// takes a array of binary values, length of bits per parity (includes parity bit),
// Parity Type (1 for odd; 0 for even; 2 Always 1's), and binary Length (length to run)
size_t addParity(uint8_t *BitSource, uint8_t *dest, uint8_t sourceLen, uint8_t pLen, uint8_t pType)
{
uint32_t parityWd = 0;
size_t j = 0, bitCnt = 0;
for (int word = 0; word < sourceLen; word+=pLen-1) {
for (int bit=0; bit < pLen-1; bit++){
parityWd = (parityWd << 1) | BitSource[word+bit];
dest[j++] = (BitSource[word+bit]);
}
// if parity fails then return 0
if (pType == 2) { // then marker bit which should be a 1
dest[j++]=1;
} else {
dest[j++] = parityTest(parityWd, pLen-1, pType) ^ 1;
}
bitCnt += pLen;
parityWd = 0;
}
// if we got here then all the parities passed
//return ID start index and size
return bitCnt;
}
uint32_t bytebits_to_byte(uint8_t *src, size_t numbits)
{
uint32_t num = 0;
for(int i = 0 ; i < numbits ; i++)
{
num = (num << 1) | (*src);
src++;
}
return num;
}
//least significant bit first
uint32_t bytebits_to_byteLSBF(uint8_t *src, size_t numbits)
{
uint32_t num = 0;
for(int i = 0 ; i < numbits ; i++)
{
num = (num << 1) | *(src + (numbits-(i+1)));
}
return num;
}
//by marshmellow
//search for given preamble in given BitStream and return success=1 or fail=0 and startIndex and length
uint8_t preambleSearch(uint8_t *BitStream, uint8_t *preamble, size_t pLen, size_t *size, size_t *startIdx)
@ -184,6 +274,7 @@ int askdemod(uint8_t *BinStream, size_t *size, int *clk, int *invert, int maxErr
if (*clk==0 || start < 0) return -3;
if (*invert != 1) *invert = 0;
if (amp==1) askAmp(BinStream, *size);
if (g_debugMode==2) prnt("DEBUG: clk %d, beststart %d", *clk, start);
uint8_t initLoopMax = 255;
if (initLoopMax > *size) initLoopMax = *size;
@ -196,6 +287,7 @@ int askdemod(uint8_t *BinStream, size_t *size, int *clk, int *invert, int maxErr
size_t errCnt = 0;
// if clean clipped waves detected run alternate demod
if (DetectCleanAskWave(BinStream, *size, high, low)) {
if (g_debugMode==2) prnt("DEBUG: Clean Wave Detected");
errCnt = cleanAskRawDemod(BinStream, size, *clk, *invert, high, low);
if (askType) //askman
return manrawdecode(BinStream, size, 0);
@ -208,7 +300,7 @@ int askdemod(uint8_t *BinStream, size_t *size, int *clk, int *invert, int maxErr
uint8_t midBit = 0;
uint8_t tol = 0; //clock tolerance adjust - waves will be accepted as within the clock if they fall + or - this value + clock from last valid wave
if (*clk <= 32) tol = 1; //clock tolerance may not be needed anymore currently set to + or - 1 but could be increased for poor waves or removed entirely
size_t MaxBits = 1024;
size_t MaxBits = 3072;
lastBit = start - *clk;
for (i = start; i < *size; ++i) {
@ -385,15 +477,15 @@ size_t fsk_wave_demod(uint8_t * dest, size_t size, uint8_t fchigh, uint8_t fclow
// sync to first lo-hi transition, and threshold
// Need to threshold first sample
if(dest[0] < threshold_value) dest[0] = 0;
// skip 160 samples to allow antenna/samples to settle
if(dest[160] < threshold_value) dest[0] = 0;
else dest[0] = 1;
size_t numBits = 0;
// count cycles between consecutive lo-hi transitions, there should be either 8 (fc/8)
// or 10 (fc/10) cycles but in practice due to noise etc we may end up with with anywhere
// between 7 to 11 cycles so fuzz it by treat anything <9 as 8 and anything else as 10
for(idx = 1; idx < size; idx++) {
for(idx = 161; idx < size-20; idx++) {
// threshold current value
if (dest[idx] < threshold_value) dest[idx] = 0;
@ -404,15 +496,15 @@ size_t fsk_wave_demod(uint8_t * dest, size_t size, uint8_t fchigh, uint8_t fclow
preLastSample = LastSample;
LastSample = currSample;
currSample = idx-last_transition;
if (currSample < (fclow-2)){ //0-5 = garbage noise
if (currSample < (fclow-2)){ //0-5 = garbage noise (or 0-3)
//do nothing with extra garbage
} else if (currSample < (fchigh-1)) { //6-8 = 8 sample waves
if (LastSample > (fchigh-2) && preLastSample < (fchigh-1)){
dest[numBits-1]=1; //correct last 9 wave surrounded by 8 waves
} else if (currSample < (fchigh-1)) { //6-8 = 8 sample waves or 3-6 = 5
if (LastSample > (fchigh-2) && (preLastSample < (fchigh-1) || preLastSample == 0 )){
dest[numBits-1]=1; //correct previous 9 wave surrounded by 8 waves
}
dest[numBits++]=1;
} else if (currSample > (fchigh+1) && !numBits) { //12 + and first bit = garbage
} else if (currSample > (fchigh) && !numBits) { //12 + and first bit = garbage
//do nothing with beginning garbage
} else if (currSample == (fclow+1) && LastSample == (fclow-1)) { // had a 7 then a 9 should be two 8's
dest[numBits++]=1;
@ -439,19 +531,8 @@ size_t aggregate_bits(uint8_t *dest, size_t size, uint8_t rfLen,
//if lastval was 1, we have a 1->0 crossing
if (dest[idx-1]==1) {
if (!numBits && n < rfLen/fclow) {
n=0;
lastval = dest[idx];
continue;
}
n = (n * fclow + rfLen/2) / rfLen;
} else {// 0->1 crossing
//test first bitsample too small
if (!numBits && n < rfLen/fchigh) {
n=0;
lastval = dest[idx];
continue;
}
n = (n * fchigh + rfLen/2) / rfLen;
}
if (n == 0) n = 1;
@ -473,6 +554,7 @@ size_t aggregate_bits(uint8_t *dest, size_t size, uint8_t rfLen,
}
return numBits;
}
//by marshmellow (from holiman's base)
// full fsk demod from GraphBuffer wave to decoded 1s and 0s (no mandemod)
int fskdemod(uint8_t *dest, size_t size, uint8_t rfLen, uint8_t invert, uint8_t fchigh, uint8_t fclow)
@ -547,28 +629,6 @@ int ParadoxdemodFSK(uint8_t *dest, size_t *size, uint32_t *hi2, uint32_t *hi, ui
return (int)startIdx;
}
uint32_t bytebits_to_byte(uint8_t *src, size_t numbits)
{
uint32_t num = 0;
for(int i = 0 ; i < numbits ; i++)
{
num = (num << 1) | (*src);
src++;
}
return num;
}
//least significant bit first
uint32_t bytebits_to_byteLSBF(uint8_t *src, size_t numbits)
{
uint32_t num = 0;
for(int i = 0 ; i < numbits ; i++)
{
num = (num << 1) | *(src + (numbits-(i+1)));
}
return num;
}
int IOdemodFSK(uint8_t *dest, size_t size)
{
if (justNoise(dest, size)) return -1;
@ -618,33 +678,6 @@ int VikingDemod_AM(uint8_t *dest, size_t *size) {
return (int) startIdx;
}
// by marshmellow
// takes a array of binary values, start position, length of bits per parity (includes parity bit),
// Parity Type (1 for odd; 0 for even; 2 Always 1's), and binary Length (length to run)
size_t removeParity(uint8_t *BitStream, size_t startIdx, uint8_t pLen, uint8_t pType, size_t bLen)
{
uint32_t parityWd = 0;
size_t j = 0, bitCnt = 0;
for (int word = 0; word < (bLen); word+=pLen){
for (int bit=0; bit < pLen; bit++){
parityWd = (parityWd << 1) | BitStream[startIdx+word+bit];
BitStream[j++] = (BitStream[startIdx+word+bit]);
}
j--; // overwrite parity with next data
// if parity fails then return 0
if (pType == 2) { // then marker bit which should be a 1
if (!BitStream[j]) return 0;
} else {
if (parityTest(parityWd, pLen, pType) == 0) return 0;
}
bitCnt+=(pLen-1);
parityWd = 0;
}
// if we got here then all the parities passed
//return ID start index and size
return bitCnt;
}
// Ask/Biphase Demod then try to locate an ISO 11784/85 ID
// BitStream must contain previously askrawdemod and biphasedemoded data
int FDXBdemodBI(uint8_t *dest, size_t *size)
@ -682,7 +715,7 @@ int AWIDdemodFSK(uint8_t *dest, size_t *size)
}
// by marshmellow
// FSK Demod then try to locate an Farpointe Data (pyramid) ID
// FSK Demod then try to locate a Farpointe Data (pyramid) ID
int PyramiddemodFSK(uint8_t *dest, size_t *size)
{
//make sure buffer has data
@ -707,22 +740,21 @@ int PyramiddemodFSK(uint8_t *dest, size_t *size)
// to detect a wave that has heavily clipped (clean) samples
uint8_t DetectCleanAskWave(uint8_t dest[], size_t size, uint8_t high, uint8_t low)
{
uint16_t allPeaks=1;
bool allArePeaks = true;
uint16_t cntPeaks=0;
size_t loopEnd = 512+60;
size_t loopEnd = 512+160;
if (loopEnd > size) loopEnd = size;
for (size_t i=60; i<loopEnd; i++){
for (size_t i=160; i<loopEnd; i++){
if (dest[i]>low && dest[i]<high)
allPeaks=0;
allArePeaks = false;
else
cntPeaks++;
}
if (allPeaks == 0){
if (cntPeaks > 300) return 1;
if (!allArePeaks){
if (cntPeaks > 300) return true;
}
return allPeaks;
return allArePeaks;
}
// by marshmellow
// to help detect clocks on heavily clipped samples
// based on count of low to low
@ -730,7 +762,7 @@ int DetectStrongAskClock(uint8_t dest[], size_t size, uint8_t high, uint8_t low)
{
uint8_t fndClk[] = {8,16,32,40,50,64,128};
size_t startwave;
size_t i = 0;
size_t i = 100;
size_t minClk = 255;
// get to first full low to prime loop and skip incomplete first pulse
while ((dest[i] < high) && (i < size))
@ -753,6 +785,7 @@ int DetectStrongAskClock(uint8_t dest[], size_t size, uint8_t high, uint8_t low)
minClk = i - startwave;
}
// set clock
if (g_debugMode==2) prnt("DEBUG ASK: detectstrongASKclk smallest wave: %d",minClk);
for (uint8_t clkCnt = 0; clkCnt<7; clkCnt++) {
if (minClk >= fndClk[clkCnt]-(fndClk[clkCnt]/8) && minClk <= fndClk[clkCnt]+1)
return fndClk[clkCnt];
@ -770,8 +803,8 @@ int DetectASKClock(uint8_t dest[], size_t size, int *clock, int maxErr)
uint8_t clk[] = {255,8,16,32,40,50,64,100,128,255};
uint8_t clkEnd = 9;
uint8_t loopCnt = 255; //don't need to loop through entire array...
if (size <= loopCnt) return -1; //not enough samples
if (size <= loopCnt+60) return -1; //not enough samples
size -= 60; //sometimes there is a strange end wave - filter out this....
//if we already have a valid clock
uint8_t clockFnd=0;
for (;i<clkEnd;++i)
@ -786,6 +819,7 @@ int DetectASKClock(uint8_t dest[], size_t size, int *clock, int maxErr)
if (!clockFnd){
if (DetectCleanAskWave(dest, size, peak, low)==1){
int ans = DetectStrongAskClock(dest, size, peak, low);
if (g_debugMode==2) prnt("DEBUG ASK: detectaskclk Clean Ask Wave Detected: clk %d",ans);
for (i=clkEnd-1; i>0; i--){
if (clk[i] == ans) {
*clock = ans;
@ -796,7 +830,6 @@ int DetectASKClock(uint8_t dest[], size_t size, int *clock, int maxErr)
}
}
}
uint8_t ii;
uint8_t clkCnt, tol = 0;
uint16_t bestErr[]={1000,1000,1000,1000,1000,1000,1000,1000,1000};
@ -838,7 +871,7 @@ int DetectASKClock(uint8_t dest[], size_t size, int *clock, int maxErr)
}
//if we found no errors then we can stop here and a low clock (common clocks)
// this is correct one - return this clock
//PrintAndLog("DEBUG: clk %d, err %d, ii %d, i %d",clk[clkCnt],errCnt,ii,i);
if (g_debugMode == 2) prnt("DEBUG ASK: clk %d, err %d, startpos %d, endpos %d",clk[clkCnt],errCnt,ii,i);
if(errCnt==0 && clkCnt<7) {
if (!clockFnd) *clock = clk[clkCnt];
return ii;
@ -860,8 +893,8 @@ int DetectASKClock(uint8_t dest[], size_t size, int *clock, int maxErr)
best = iii;
}
}
if (g_debugMode == 2) prnt("DEBUG ASK: clk %d, # Errors %d, Current Best Clk %d, bestStart %d",clk[iii],bestErr[iii],clk[best],bestStart[best]);
}
//if (bestErr[best] > maxErr) return -1;
if (!clockFnd) *clock = clk[best];
return bestStart[best];
}
@ -874,7 +907,7 @@ int DetectPSKClock(uint8_t dest[], size_t size, int clock)
uint8_t clk[]={255,16,32,40,50,64,100,128,255}; //255 is not a valid clock
uint16_t loopCnt = 4096; //don't need to loop through entire array...
if (size == 0) return 0;
if (size<loopCnt) loopCnt = size;
if (size<loopCnt) loopCnt = size-20;
//if we already have a valid clock quit
size_t i=1;
@ -888,17 +921,17 @@ int DetectPSKClock(uint8_t dest[], size_t size, int clock)
uint16_t peaksdet[]={0,0,0,0,0,0,0,0,0};
fc = countFC(dest, size, 0);
if (fc!=2 && fc!=4 && fc!=8) return -1;
//PrintAndLog("DEBUG: FC: %d",fc);
if (g_debugMode==2) prnt("DEBUG PSK: FC: %d",fc);
//find first full wave
for (i=0; i<loopCnt; i++){
for (i=160; i<loopCnt; i++){
if (dest[i] < dest[i+1] && dest[i+1] >= dest[i+2]){
if (waveStart == 0) {
waveStart = i+1;
//PrintAndLog("DEBUG: waveStart: %d",waveStart);
//prnt("DEBUG: waveStart: %d",waveStart);
} else {
waveEnd = i+1;
//PrintAndLog("DEBUG: waveEnd: %d",waveEnd);
//prnt("DEBUG: waveEnd: %d",waveEnd);
waveLenCnt = waveEnd-waveStart;
if (waveLenCnt > fc){
firstFullWave = waveStart;
@ -909,7 +942,7 @@ int DetectPSKClock(uint8_t dest[], size_t size, int clock)
}
}
}
//PrintAndLog("DEBUG: firstFullWave: %d, waveLen: %d",firstFullWave,fullWaveLen);
if (g_debugMode ==2) prnt("DEBUG PSK: firstFullWave: %d, waveLen: %d",firstFullWave,fullWaveLen);
//test each valid clock from greatest to smallest to see which lines up
for(clkCnt=7; clkCnt >= 1 ; clkCnt--){
@ -917,7 +950,7 @@ int DetectPSKClock(uint8_t dest[], size_t size, int clock)
waveStart = 0;
errCnt=0;
peakcnt=0;
//PrintAndLog("DEBUG: clk: %d, lastClkBit: %d",clk[clkCnt],lastClkBit);
if (g_debugMode == 2) prnt("DEBUG PSK: clk: %d, lastClkBit: %d",clk[clkCnt],lastClkBit);
for (i = firstFullWave+fullWaveLen-1; i < loopCnt-2; i++){
//top edge of wave = start of new wave
@ -930,7 +963,7 @@ int DetectPSKClock(uint8_t dest[], size_t size, int clock)
waveLenCnt = waveEnd-waveStart;
if (waveLenCnt > fc){
//if this wave is a phase shift
//PrintAndLog("DEBUG: phase shift at: %d, len: %d, nextClk: %d, ii: %d, fc: %d",waveStart,waveLenCnt,lastClkBit+clk[clkCnt]-tol,ii+1,fc);
if (g_debugMode == 2) prnt("DEBUG PSK: phase shift at: %d, len: %d, nextClk: %d, i: %d, fc: %d",waveStart,waveLenCnt,lastClkBit+clk[clkCnt]-tol,i+1,fc);
if (i+1 >= lastClkBit + clk[clkCnt] - tol){ //should be a clock bit
peakcnt++;
lastClkBit+=clk[clkCnt];
@ -959,11 +992,40 @@ int DetectPSKClock(uint8_t dest[], size_t size, int clock)
if (peaksdet[i] > peaksdet[best]) {
best = i;
}
//PrintAndLog("DEBUG: Clk: %d, peaks: %d, errs: %d, bestClk: %d",clk[iii],peaksdet[iii],bestErr[iii],clk[best]);
if (g_debugMode == 2) prnt("DEBUG PSK: Clk: %d, peaks: %d, errs: %d, bestClk: %d",clk[i],peaksdet[i],bestErr[i],clk[best]);
}
return clk[best];
}
int DetectStrongNRZClk(uint8_t *dest, size_t size, int peak, int low){
//find shortest transition from high to low
size_t i = 0;
size_t transition1 = 0;
int lowestTransition = 255;
bool lastWasHigh = false;
//find first valid beginning of a high or low wave
while ((dest[i] >= peak || dest[i] <= low) && (i < size))
++i;
while ((dest[i] < peak && dest[i] > low) && (i < size))
++i;
lastWasHigh = (dest[i] >= peak);
if (i==size) return 0;
transition1 = i;
for (;i < size; i++) {
if ((dest[i] >= peak && !lastWasHigh) || (dest[i] <= low && lastWasHigh)) {
lastWasHigh = (dest[i] >= peak);
if (i-transition1 < lowestTransition) lowestTransition = i-transition1;
transition1 = i;
}
}
if (lowestTransition == 255) lowestTransition = 0;
if (g_debugMode==2) prnt("DEBUG NRZ: detectstrongNRZclk smallest wave: %d",lowestTransition);
return lowestTransition;
}
//by marshmellow
//detect nrz clock by reading #peaks vs no peaks(or errors)
int DetectNRZClock(uint8_t dest[], size_t size, int clock)
@ -972,8 +1034,7 @@ int DetectNRZClock(uint8_t dest[], size_t size, int clock)
uint8_t clk[]={8,16,32,40,50,64,100,128,255};
size_t loopCnt = 4096; //don't need to loop through entire array...
if (size == 0) return 0;
if (size<loopCnt) loopCnt = size;
if (size<loopCnt) loopCnt = size-20;
//if we already have a valid clock quit
for (; i < 8; ++i)
if (clk[i] == clock) return clock;
@ -982,38 +1043,82 @@ int DetectNRZClock(uint8_t dest[], size_t size, int clock)
int peak, low;
if (getHiLo(dest, loopCnt, &peak, &low, 75, 75) < 1) return 0;
//PrintAndLog("DEBUG: peak: %d, low: %d",peak,low);
int lowestTransition = DetectStrongNRZClk(dest, size-20, peak, low);
size_t ii;
uint8_t clkCnt;
uint8_t tol = 0;
uint16_t peakcnt=0;
uint16_t peaksdet[]={0,0,0,0,0,0,0,0};
uint16_t maxPeak=0;
uint16_t smplCnt = 0;
int16_t peakcnt = 0;
int16_t peaksdet[] = {0,0,0,0,0,0,0,0};
uint16_t maxPeak = 255;
bool firstpeak = false;
//test for large clipped waves
for (i=0; i<loopCnt; i++){
if (dest[i] >= peak || dest[i] <= low){
peakcnt++;
if (!firstpeak) continue;
smplCnt++;
} else {
if (peakcnt>0 && maxPeak < peakcnt){
maxPeak = peakcnt;
firstpeak=true;
if (smplCnt > 6 ){
if (maxPeak > smplCnt){
maxPeak = smplCnt;
//prnt("maxPk: %d",maxPeak);
}
peakcnt++;
//prnt("maxPk: %d, smplCnt: %d, peakcnt: %d",maxPeak,smplCnt,peakcnt);
smplCnt=0;
}
peakcnt=0;
}
}
bool errBitHigh = 0;
bool bitHigh = 0;
uint8_t ignoreCnt = 0;
uint8_t ignoreWindow = 4;
bool lastPeakHigh = 0;
int lastBit = 0;
peakcnt=0;
//test each valid clock from smallest to greatest to see which lines up
for(clkCnt=0; clkCnt < 8; ++clkCnt){
//ignore clocks smaller than largest peak
if (clk[clkCnt]<maxPeak) continue;
//ignore clocks smaller than smallest peak
if (clk[clkCnt] < maxPeak - (clk[clkCnt]/4)) continue;
//try lining up the peaks by moving starting point (try first 256)
for (ii=0; ii< loopCnt; ++ii){
for (ii=20; ii < loopCnt; ++ii){
if ((dest[ii] >= peak) || (dest[ii] <= low)){
peakcnt=0;
// now that we have the first one lined up test rest of wave array
for (i=0; i < ((int)((size-ii-tol)/clk[clkCnt])-1); ++i){
if (dest[ii+(i*clk[clkCnt])]>=peak || dest[ii+(i*clk[clkCnt])]<=low){
peakcnt++;
peakcnt = 0;
bitHigh = false;
ignoreCnt = 0;
lastBit = ii-clk[clkCnt];
//loop through to see if this start location works
for (i = ii; i < size-20; ++i) {
//if we are at a clock bit
if ((i >= lastBit + clk[clkCnt] - tol) && (i <= lastBit + clk[clkCnt] + tol)) {
//test high/low
if (dest[i] >= peak || dest[i] <= low) {
//if same peak don't count it
if ((dest[i] >= peak && !lastPeakHigh) || (dest[i] <= low && lastPeakHigh)) {
peakcnt++;
}
lastPeakHigh = (dest[i] >= peak);
bitHigh = true;
errBitHigh = false;
ignoreCnt = ignoreWindow;
lastBit += clk[clkCnt];
} else if (i == lastBit + clk[clkCnt] + tol) {
lastBit += clk[clkCnt];
}
//else if not a clock bit and no peaks
} else if (dest[i] < peak && dest[i] > low){
if (ignoreCnt==0){
bitHigh=false;
if (errBitHigh==true) peakcnt--;
errBitHigh=false;
} else {
ignoreCnt--;
}
// else if not a clock bit but we have a peak
} else if ((dest[i]>=peak || dest[i]<=low) && (!bitHigh)) {
//error bar found no clock...
errBitHigh=true;
}
}
if(peakcnt>peaksdet[clkCnt]) {
@ -1025,11 +1130,16 @@ int DetectNRZClock(uint8_t dest[], size_t size, int clock)
int iii=7;
uint8_t best=0;
for (iii=7; iii > 0; iii--){
if (peaksdet[iii] > peaksdet[best]){
if ((peaksdet[iii] >= (peaksdet[best]-1)) && (peaksdet[iii] <= peaksdet[best]+1) && lowestTransition) {
if (clk[iii] > (lowestTransition - (clk[iii]/8)) && clk[iii] < (lowestTransition + (clk[iii]/8))) {
best = iii;
}
} else if (peaksdet[iii] > peaksdet[best]){
best = iii;
}
//PrintAndLog("DEBUG: Clk: %d, peaks: %d, errs: %d, bestClk: %d",clk[iii],peaksdet[iii],bestErr[iii],clk[best]);
if (g_debugMode==2) prnt("DEBUG NRZ: Clk: %d, peaks: %d, maxPeak: %d, bestClk: %d, lowestTrs: %d",clk[iii],peaksdet[iii],maxPeak, clk[best], lowestTransition);
}
return clk[best];
}
@ -1089,123 +1199,37 @@ int indala26decode(uint8_t *bitStream, size_t *size, uint8_t *invert)
return (int) startidx;
}
// by marshmellow - demodulate NRZ wave (both similar enough)
// by marshmellow - demodulate NRZ wave
// peaks invert bit (high=1 low=0) each clock cycle = 1 bit determined by last peak
// there probably is a much simpler way to do this....
int nrzRawDemod(uint8_t *dest, size_t *size, int *clk, int *invert, int maxErr)
{
int nrzRawDemod(uint8_t *dest, size_t *size, int *clk, int *invert){
if (justNoise(dest, *size)) return -1;
*clk = DetectNRZClock(dest, *size, *clk);
if (*clk==0) return -2;
size_t i, gLen = 4096;
if (gLen>*size) gLen = *size;
if (gLen>*size) gLen = *size-20;
int high, low;
if (getHiLo(dest, gLen, &high, &low, 75, 75) < 1) return -3; //25% fuzz on high 25% fuzz on low
int lastBit = 0; //set first clock check
size_t iii = 0, bitnum = 0; //bitnum counter
uint16_t errCnt = 0, MaxBits = 1000;
size_t bestErrCnt = maxErr+1;
size_t bestPeakCnt = 0, bestPeakStart = 0;
uint8_t bestFirstPeakHigh=0, firstPeakHigh=0, curBit=0, bitHigh=0, errBitHigh=0;
uint8_t tol = 1; //clock tolerance adjust - waves will be accepted as within the clock if they fall + or - this value + clock from last valid wave
uint16_t peakCnt=0;
uint8_t ignoreWindow=4;
uint8_t ignoreCnt=ignoreWindow; //in case of noise near peak
//loop to find first wave that works - align to clock
for (iii=0; iii < gLen; ++iii){
if ((dest[iii]>=high) || (dest[iii]<=low)){
if (dest[iii]>=high) firstPeakHigh=1;
else firstPeakHigh=0;
lastBit=iii-*clk;
peakCnt=0;
errCnt=0;
//loop through to see if this start location works
for (i = iii; i < *size; ++i) {
// if we are at a clock bit
if ((i >= lastBit + *clk - tol) && (i <= lastBit + *clk + tol)) {
//test high/low
if (dest[i] >= high || dest[i] <= low) {
bitHigh = 1;
peakCnt++;
errBitHigh = 0;
ignoreCnt = ignoreWindow;
lastBit += *clk;
} else if (i == lastBit + *clk + tol) {
lastBit += *clk;
}
//else if no bars found
} else if (dest[i] < high && dest[i] > low){
if (ignoreCnt==0){
bitHigh=0;
if (errBitHigh==1) errCnt++;
errBitHigh=0;
} else {
ignoreCnt--;
}
} else if ((dest[i]>=high || dest[i]<=low) && (bitHigh==0)) {
//error bar found no clock...
errBitHigh=1;
}
if (((i-iii) / *clk)>=MaxBits) break;
}
//we got more than 64 good bits and not all errors
if (((i-iii) / *clk) > 64 && (errCnt <= (maxErr))) {
//possible good read
if (!errCnt || peakCnt > bestPeakCnt){
bestFirstPeakHigh=firstPeakHigh;
bestErrCnt = errCnt;
bestPeakCnt = peakCnt;
bestPeakStart = iii;
if (!errCnt) break; //great read - finish
}
}
uint8_t bit=0;
//convert wave samples to 1's and 0's
for(i=20; i < *size-20; i++){
if (dest[i] >= high) bit = 1;
if (dest[i] <= low) bit = 0;
dest[i] = bit;
}
//now demod based on clock (rf/32 = 32 1's for one 1 bit, 32 0's for one 0 bit)
size_t lastBit = 0;
size_t numBits = 0;
for(i=21; i < *size-20; i++) {
//if transition detected or large number of same bits - store the passed bits
if (dest[i] != dest[i-1] || (i-lastBit) == (10 * *clk)) {
memset(dest+numBits, dest[i-1] ^ *invert, (i - lastBit + (*clk/4)) / *clk);
numBits += (i - lastBit + (*clk/4)) / *clk;
lastBit = i-1;
}
}
//PrintAndLog("DEBUG: bestErrCnt: %d, maxErr: %d, bestStart: %d, bestPeakCnt: %d, bestPeakStart: %d",bestErrCnt,maxErr,bestStart,bestPeakCnt,bestPeakStart);
if (bestErrCnt > maxErr) return bestErrCnt;
//best run is good enough set to best run and set overwrite BinStream
lastBit = bestPeakStart - *clk;
memset(dest, bestFirstPeakHigh^1, bestPeakStart / *clk);
bitnum += (bestPeakStart / *clk);
for (i = bestPeakStart; i < *size; ++i) {
// if expecting a clock bit
if ((i >= lastBit + *clk - tol) && (i <= lastBit + *clk + tol)) {
// test high/low
if (dest[i] >= high || dest[i] <= low) {
peakCnt++;
bitHigh = 1;
errBitHigh = 0;
ignoreCnt = ignoreWindow;
curBit = *invert;
if (dest[i] >= high) curBit ^= 1;
dest[bitnum++] = curBit;
lastBit += *clk;
//else no bars found in clock area
} else if (i == lastBit + *clk + tol) {
dest[bitnum++] = curBit;
lastBit += *clk;
}
//else if no bars found
} else if (dest[i] < high && dest[i] > low){
if (ignoreCnt == 0){
bitHigh = 0;
if (errBitHigh == 1){
dest[bitnum++] = 7;
errCnt++;
}
errBitHigh=0;
} else {
ignoreCnt--;
}
} else if ((dest[i] >= high || dest[i] <= low) && (bitHigh == 0)) {
//error bar found no clock...
errBitHigh=1;
}
if (bitnum >= MaxBits) break;
}
*size = bitnum;
return bestErrCnt;
*size = numBits;
return 0;
}
//by marshmellow
@ -1223,18 +1247,18 @@ uint8_t detectFSKClk(uint8_t *BitStream, size_t size, uint8_t fcHigh, uint8_t fc
size_t i;
if (size == 0) return 0;
uint8_t fcTol = (uint8_t)(0.5+(float)(fcHigh-fcLow)/2);
uint8_t fcTol = ((fcHigh*100 - fcLow*100)/2 + 50)/100; //(uint8_t)(0.5+(float)(fcHigh-fcLow)/2);
rfLensFnd=0;
fcCounter=0;
rfCounter=0;
firstBitFnd=0;
//PrintAndLog("DEBUG: fcTol: %d",fcTol);
// prime i to first up transition
for (i = 1; i < size-1; i++)
// prime i to first peak / up transition
for (i = 160; i < size-20; i++)
if (BitStream[i] > BitStream[i-1] && BitStream[i]>=BitStream[i+1])
break;
for (; i < size-1; i++){
for (; i < size-20; i++){
fcCounter++;
rfCounter++;
@ -1252,7 +1276,7 @@ uint8_t detectFSKClk(uint8_t *BitStream, size_t size, uint8_t fcHigh, uint8_t fc
//not the same size as the last wave - start of new bit sequence
if (firstBitFnd > 1){ //skip first wave change - probably not a complete bit
for (int ii=0; ii<15; ii++){
if (rfLens[ii] == rfCounter){
if (rfLens[ii] >= (rfCounter-4) && rfLens[ii] <= (rfCounter+4)){
rfCnts[ii]++;
rfCounter = 0;
break;
@ -1274,7 +1298,6 @@ uint8_t detectFSKClk(uint8_t *BitStream, size_t size, uint8_t fcHigh, uint8_t fc
uint8_t rfHighest=15, rfHighest2=15, rfHighest3=15;
for (i=0; i<15; i++){
//PrintAndLog("DEBUG: RF %d, cnts %d",rfLens[i], rfCnts[i]);
//get highest 2 RF values (might need to get more values to compare or compare all?)
if (rfCnts[i]>rfCnts[rfHighest]){
rfHighest3=rfHighest2;
@ -1286,20 +1309,23 @@ uint8_t detectFSKClk(uint8_t *BitStream, size_t size, uint8_t fcHigh, uint8_t fc
} else if(rfCnts[i]>rfCnts[rfHighest3]){
rfHighest3=i;
}
if (g_debugMode==2) prnt("DEBUG FSK: RF %d, cnts %d",rfLens[i], rfCnts[i]);
}
// set allowed clock remainder tolerance to be 1 large field clock length+1
// we could have mistakenly made a 9 a 10 instead of an 8 or visa versa so rfLens could be 1 FC off
uint8_t tol1 = fcHigh+1;
//PrintAndLog("DEBUG: hightest: 1 %d, 2 %d, 3 %d",rfLens[rfHighest],rfLens[rfHighest2],rfLens[rfHighest3]);
if (g_debugMode==2) prnt("DEBUG FSK: most counted rf values: 1 %d, 2 %d, 3 %d",rfLens[rfHighest],rfLens[rfHighest2],rfLens[rfHighest3]);
// loop to find the highest clock that has a remainder less than the tolerance
// compare samples counted divided by
// test 128 down to 32 (shouldn't be possible to have fc/10 & fc/8 and rf/16 or less)
int ii=7;
for (; ii>=0; ii--){
for (; ii>=2; ii--){
if (rfLens[rfHighest] % clk[ii] < tol1 || rfLens[rfHighest] % clk[ii] > clk[ii]-tol1){
if (rfLens[rfHighest2] % clk[ii] < tol1 || rfLens[rfHighest2] % clk[ii] > clk[ii]-tol1){
if (rfLens[rfHighest3] % clk[ii] < tol1 || rfLens[rfHighest3] % clk[ii] > clk[ii]-tol1){
if (g_debugMode==2) prnt("DEBUG FSK: clk %d divides into the 3 most rf values within tolerance",clk[ii]);
break;
}
}
@ -1317,8 +1343,8 @@ uint8_t detectFSKClk(uint8_t *BitStream, size_t size, uint8_t fcHigh, uint8_t fc
//mainly used for FSK field clock detection
uint16_t countFC(uint8_t *BitStream, size_t size, uint8_t fskAdj)
{
uint8_t fcLens[] = {0,0,0,0,0,0,0,0,0,0};
uint16_t fcCnts[] = {0,0,0,0,0,0,0,0,0,0};
uint8_t fcLens[] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
uint16_t fcCnts[] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
uint8_t fcLensFnd = 0;
uint8_t lastFCcnt=0;
uint8_t fcCounter = 0;
@ -1326,11 +1352,11 @@ uint16_t countFC(uint8_t *BitStream, size_t size, uint8_t fskAdj)
if (size == 0) return 0;
// prime i to first up transition
for (i = 1; i < size-1; i++)
for (i = 160; i < size-20; i++)
if (BitStream[i] > BitStream[i-1] && BitStream[i] >= BitStream[i+1])
break;
for (; i < size-1; i++){
for (; i < size-20; i++){
if (BitStream[i] > BitStream[i-1] && BitStream[i] >= BitStream[i+1]){
// new up transition
fcCounter++;
@ -1343,14 +1369,14 @@ uint16_t countFC(uint8_t *BitStream, size_t size, uint8_t fskAdj)
lastFCcnt = fcCounter;
}
// find which fcLens to save it to:
for (int ii=0; ii<10; ii++){
for (int ii=0; ii<15; ii++){
if (fcLens[ii]==fcCounter){
fcCnts[ii]++;
fcCounter=0;
break;
}
}
if (fcCounter>0 && fcLensFnd<10){
if (fcCounter>0 && fcLensFnd<15){
//add new fc length
fcCnts[fcLensFnd]++;
fcLens[fcLensFnd++]=fcCounter;
@ -1362,11 +1388,10 @@ uint16_t countFC(uint8_t *BitStream, size_t size, uint8_t fskAdj)
}
}
uint8_t best1=9, best2=9, best3=9;
uint8_t best1=14, best2=14, best3=14;
uint16_t maxCnt1=0;
// go through fclens and find which ones are bigest 2
for (i=0; i<10; i++){
// PrintAndLog("DEBUG: FC %d, Cnt %d, Errs %d",fcLens[i],fcCnts[i],errCnt);
for (i=0; i<15; i++){
// get the 3 best FC values
if (fcCnts[i]>maxCnt1) {
best3=best2;
@ -1379,7 +1404,9 @@ uint16_t countFC(uint8_t *BitStream, size_t size, uint8_t fskAdj)
} else if(fcCnts[i]>fcCnts[best3]){
best3=i;
}
if (g_debugMode==2) prnt("DEBUG countfc: FC %u, Cnt %u, best fc: %u, best2 fc: %u",fcLens[i],fcCnts[i],fcLens[best1],fcLens[best2]);
}
if (fcLens[best1]==0) return 0;
uint8_t fcH=0, fcL=0;
if (fcLens[best1]>fcLens[best2]){
fcH=fcLens[best1];
@ -1388,11 +1415,13 @@ uint16_t countFC(uint8_t *BitStream, size_t size, uint8_t fskAdj)
fcH=fcLens[best2];
fcL=fcLens[best1];
}
if ((size-180)/fcH/3 > fcCnts[best1]+fcCnts[best2]) {
if (g_debugMode==2) prnt("DEBUG countfc: fc is too large: %u > %u. Not psk or fsk",(size-180)/fcH/3,fcCnts[best1]+fcCnts[best2]);
return 0; //lots of waves not psk or fsk
}
// TODO: take top 3 answers and compare to known Field clocks to get top 2
uint16_t fcs = (((uint16_t)fcH)<<8) | fcL;
// PrintAndLog("DEBUG: Best %d best2 %d best3 %d",fcLens[best1],fcLens[best2],fcLens[best3]);
if (fskAdj) return fcs;
return fcLens[best1];
}
@ -1405,6 +1434,7 @@ int pskRawDemod(uint8_t dest[], size_t *size, int *clock, int *invert)
uint16_t loopCnt = 4096; //don't need to loop through entire array...
if (*size<loopCnt) loopCnt = *size;
size_t numBits=0;
uint8_t curPhase = *invert;
size_t i, waveStart=1, waveEnd=0, firstFullWave=0, lastClkBit=0;
uint8_t fc=0, fullWaveLen=0, tol=1;
@ -1421,7 +1451,7 @@ int pskRawDemod(uint8_t dest[], size_t *size, int *clock, int *invert)
waveEnd = i+1;
//PrintAndLog("DEBUG: waveEnd: %d",waveEnd);
waveLenCnt = waveEnd-waveStart;
if (waveLenCnt > fc && waveStart > fc){ //not first peak and is a large wave
if (waveLenCnt > fc && waveStart > fc && !(waveLenCnt > fc+2)){ //not first peak and is a large wave but not out of whack
lastAvgWaveVal = avgWaveVal/(waveLenCnt);
firstFullWave = waveStart;
fullWaveLen=waveLenCnt;
@ -1434,14 +1464,21 @@ int pskRawDemod(uint8_t dest[], size_t *size, int *clock, int *invert)
}
avgWaveVal += dest[i+2];
}
if (firstFullWave == 0) {
// no phase shift detected - could be all 1's or 0's - doesn't matter where we start
// so skip a little to ensure we are past any Start Signal
firstFullWave = 160;
memset(dest, curPhase, firstFullWave / *clock);
} else {
memset(dest, curPhase^1, firstFullWave / *clock);
}
//advance bits
numBits += (firstFullWave / *clock);
//set start of wave as clock align
lastClkBit = firstFullWave;
//PrintAndLog("DEBUG: firstFullWave: %d, waveLen: %d",firstFullWave,fullWaveLen);
lastClkBit = firstFullWave; //set start of wave as clock align
//PrintAndLog("DEBUG: clk: %d, lastClkBit: %d", *clock, lastClkBit);
waveStart = 0;
size_t numBits=0;
//set skipped bits
memset(dest, curPhase^1, firstFullWave / *clock);
numBits += (firstFullWave / *clock);
dest[numBits++] = curPhase; //set first read bit
for (i = firstFullWave + fullWaveLen - 1; i < *size-3; i++){
//top edge of wave = start of new wave

3
common/lfdemod.h
View file

@ -16,6 +16,7 @@
#include <stdint.h>
//generic
size_t addParity(uint8_t *BitSource, uint8_t *dest, uint8_t sourceLen, uint8_t pLen, uint8_t pType);
int askdemod(uint8_t *BinStream, size_t *size, int *clk, int *invert, int maxErr, uint8_t amp, uint8_t askType);
int BiphaseRawDecode(uint8_t * BitStream, size_t *size, int offset, int invert);
uint32_t bytebits_to_byte(uint8_t* src, size_t numbits);
@ -32,7 +33,7 @@ int getHiLo(uint8_t *BitStream, size_t size, int *high, int *low, uint8_t f
uint32_t manchesterEncode2Bytes(uint16_t datain);
int ManchesterEncode(uint8_t *BitStream, size_t size);
int manrawdecode(uint8_t *BitStream, size_t *size, uint8_t invert);
int nrzRawDemod(uint8_t *dest, size_t *size, int *clk, int *invert, int maxErr);
int nrzRawDemod(uint8_t *dest, size_t *size, int *clk, int *invert);
uint8_t parityTest(uint32_t bits, uint8_t bitLen, uint8_t pType);
uint8_t preambleSearch(uint8_t *BitStream, uint8_t *preamble, size_t pLen, size_t *size, size_t *startIdx);
int pskRawDemod(uint8_t dest[], size_t *size, int *clock, int *invert);

1
include/usb_cmd.h
View file

@ -99,6 +99,7 @@ typedef struct{
#define CMD_ASK_SIM_TAG 0x021F
#define CMD_PSK_SIM_TAG 0x0220
#define CMD_AWID_DEMOD_FSK 0x0221
#define CMD_VIKING_CLONE_TAG 0x0223
#define CMD_T55XX_WAKEUP 0x0224