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fix hf mf sim

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* fix parity encryption (thanks to Eloff, http://www.proxmark.org/forum/viewtopic.php?id=6347)
* add support to simulate Mifare Mini, Mifare 2K and Mifare 4K
* change to standard LED handling (A: PM is working, B: reader is sending, C: tag is responding, D: HF field is on)
* whitespace
This commit is contained in:
pwpiwi 2019-03-26 08:12:01 +01:00
commit 02e47adfb8
10 changed files with 292 additions and 180 deletions
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35
armsrc/BigBuf.c
View file

@ -21,8 +21,8 @@
/* BigBuf memory layout:
Pointer to highest available memory: BigBuf_hi
high BIGBUF_SIZE
reserved = BigBuf_malloc() subtracts amount from BigBuf_hi,
high BIGBUF_SIZE
reserved = BigBuf_malloc() subtracts amount from BigBuf_hi,
low 0x00
*/
@ -39,6 +39,7 @@ static uint8_t *emulator_memory = NULL;
static uint32_t traceLen = 0;
static bool tracing = true;
// get the address of BigBuf
uint8_t *BigBuf_get_addr(void)
{
@ -53,7 +54,7 @@ uint8_t *BigBuf_get_EM_addr(void)
if (emulator_memory == NULL) {
emulator_memory = BigBuf_malloc(CARD_MEMORY_SIZE);
}
return emulator_memory;
}
@ -63,17 +64,22 @@ void BigBuf_Clear(void)
{
BigBuf_Clear_ext(true);
}
// clear ALL of BigBuf
void BigBuf_Clear_ext(bool verbose)
{
memset(BigBuf, 0, BIGBUF_SIZE);
if (verbose)
Dbprintf("Buffer cleared (%i bytes)",BIGBUF_SIZE);
if (verbose)
Dbprintf("Buffer cleared (%i bytes)", BIGBUF_SIZE);
}
void BigBuf_Clear_EM(void){
memset(BigBuf_get_EM_addr(), 0, CARD_MEMORY_SIZE);
}
void BigBuf_Clear_keep_EM(void)
{
memset(BigBuf, 0, BigBuf_hi);
@ -83,11 +89,11 @@ void BigBuf_Clear_keep_EM(void)
// at the beginning of BigBuf is always for traces/samples
uint8_t *BigBuf_malloc(uint16_t chunksize)
{
if (BigBuf_hi - chunksize < 0) {
return NULL; // no memory left
if (BigBuf_hi - chunksize < 0) {
return NULL; // no memory left
} else {
chunksize = (chunksize + 3) & 0xfffc; // round to next multiple of 4
BigBuf_hi -= chunksize; // aligned to 4 Byte boundary
chunksize = (chunksize + 3) & 0xfffc; // round to next multiple of 4
BigBuf_hi -= chunksize; // aligned to 4 Byte boundary
return (uint8_t *)BigBuf + BigBuf_hi;
}
}
@ -128,18 +134,22 @@ uint16_t BigBuf_max_traceLen(void)
return BigBuf_hi;
}
void clear_trace() {
traceLen = 0;
}
void set_tracing(bool enable) {
tracing = enable;
}
bool get_tracing(void) {
return tracing;
}
/**
* Get the number of bytes traced
* @return
@ -149,6 +159,7 @@ uint16_t BigBuf_get_traceLen(void)
return traceLen;
}
/**
This is a function to store traces. All protocols can use this generic tracer-function.
The traces produced by calling this function can be fetched on the client-side
@ -162,14 +173,14 @@ bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_
uint8_t *trace = BigBuf_get_addr();
uint32_t num_paritybytes = (iLen-1)/8 + 1; // number of valid paritybytes in *parity
uint32_t num_paritybytes = (iLen-1)/8 + 1; // number of valid paritybytes in *parity
uint32_t duration = timestamp_end - timestamp_start;
// Return when trace is full
uint16_t max_traceLen = BigBuf_max_traceLen();
if (traceLen + sizeof(iLen) + sizeof(timestamp_start) + sizeof(duration) + num_paritybytes + iLen >= max_traceLen) {
tracing = false; // don't trace any more
tracing = false; // don't trace any more
return false;
}
// Traceformat:
@ -237,7 +248,7 @@ int LogTraceHitag(const uint8_t * btBytes, int iBits, int iSamples, uint32_t dwP
// Return when trace is full
if (traceLen + sizeof(rsamples) + sizeof(dwParity) + sizeof(iBits) + iLen > BigBuf_max_traceLen()) {
return false;
}
}
//Hitag traces appear to use this traceformat:
// 32 bits timestamp (little endian,Highest Bit used as readerToTag flag)

2
armsrc/BigBuf.h
View file

@ -20,7 +20,7 @@
#define MAX_PARITY_SIZE ((MAX_FRAME_SIZE + 7) / 8)
#define MAX_MIFARE_FRAME_SIZE 18 // biggest Mifare frame is answer to a read (one block = 16 Bytes) + 2 Bytes CRC
#define MAX_MIFARE_PARITY_SIZE 3 // need 18 parity bits for the 18 Byte above. 3 Bytes are enough to store these
#define CARD_MEMORY_SIZE 4096
#define CARD_MEMORY_SIZE 4096
#define DMA_BUFFER_SIZE 128
extern uint8_t *BigBuf_get_addr(void);

3
armsrc/appmain.c
View file

@ -29,6 +29,7 @@
#include "lfsampling.h"
#include "BigBuf.h"
#include "mifareutil.h"
#include "mifaresim.h"
#include "pcf7931.h"
#include "i2c.h"
#include "hfsnoop.h"
@ -1249,7 +1250,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
MifareChkKeys(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
break;
case CMD_SIMULATE_MIFARE_CARD:
Mifare1ksim(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
MifareSim(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
break;
// emulator

1
armsrc/apps.h
View file

@ -119,7 +119,6 @@ void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain);
void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain);
void MifareAcquireEncryptedNonces(uint32_t arg0, uint32_t arg1, uint32_t flags, uint8_t *datain);
void MifareChkKeys(uint16_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain);
void Mifare1ksim(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain);
void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain);
void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain);
void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain);

10
armsrc/iso14443a.c
View file

@ -1264,6 +1264,7 @@ static void PrepareDelayedTransfer(uint16_t delay)
//-------------------------------------------------------------------------------------
static void TransmitFor14443a(const uint8_t *cmd, uint16_t len, uint32_t *timing)
{
LED_B_ON();
LED_D_ON();
FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
@ -1299,6 +1300,7 @@ static void TransmitFor14443a(const uint8_t *cmd, uint16_t len, uint32_t *timing
}
NextTransferTime = MAX(NextTransferTime, LastTimeProxToAirStart + REQUEST_GUARD_TIME);
LED_B_OFF();
}
@ -1420,8 +1422,6 @@ int EmGetCmd(uint8_t *received, uint16_t *len, uint8_t *parity)
// Set FPGA mode to "simulated ISO 14443 tag", no modulation (listen
// only, since we are receiving, not transmitting).
// Signal field is off with the appropriate LED
LED_D_OFF();
FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_LISTEN);
for(;;) {
@ -1463,12 +1463,13 @@ int EmGetCmd(uint8_t *received, uint16_t *len, uint8_t *parity)
static int EmSendCmd14443aRaw(uint8_t *resp, uint16_t respLen)
{
LED_C_ON();
uint8_t b;
uint16_t i = 0;
bool correctionNeeded;
// Modulate Manchester
LED_D_OFF();
FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_MOD);
// include correction bit if necessary
@ -1516,6 +1517,7 @@ static int EmSendCmd14443aRaw(uint8_t *resp, uint16_t respLen)
}
}
LED_C_OFF();
return 0;
}
@ -1762,7 +1764,7 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u
// OK we will select at least at cascade 1, lets see if first byte of UID was 0x88 in
// which case we need to make a cascade 2 request and select - this is a long UID
// While the UID is not complete, the 3nd bit (from the right) is set in the SAK.
// While the UID is not complete, the 3rd bit (from the right) is set in the SAK.
for(; sak & 0x04; cascade_level++) {
// SELECT_* (L1: 0x93, L2: 0x95, L3: 0x97)
sel_uid[0] = sel_all[0] = 0x93 + cascade_level * 2;

321
armsrc/mifaresim.c
View file

@ -32,19 +32,17 @@
#define MFEMUL_SELECT3 4
#define MFEMUL_AUTH1 5
#define MFEMUL_AUTH2 6
#define MFEMUL_WORK 7
#define MFEMUL_WORK 7
#define MFEMUL_WRITEBL2 8
#define MFEMUL_INTREG_INC 9
#define MFEMUL_INTREG_DEC 10
#define MFEMUL_INTREG_REST 11
#define MFEMUL_HALTED 12
#define cardSTATE_TO_IDLE() { cardSTATE = MFEMUL_IDLE; LED_B_OFF(); LED_C_OFF(); }
#define AC_DATA_READ 0
#define AC_DATA_WRITE 1
#define AC_DATA_INC 2
#define AC_DATA_DEC_TRANS_REST 3
#define AC_DATA_INC 2
#define AC_DATA_DEC_TRANS_REST 3
#define AC_KEYA_READ 0
#define AC_KEYA_WRITE 1
#define AC_KEYB_READ 2
@ -57,11 +55,30 @@
#define AUTHKEYNONE 0xff
static int ParamCardSizeBlocks(const char c) {
int numBlocks = 16 * 4;
switch (c) {
case '0' : numBlocks = 5 * 4; break;
case '2' : numBlocks = 32 * 4; break;
case '4' : numBlocks = 32 * 4 + 8 * 16; break;
default: numBlocks = 16 * 4;
}
return numBlocks;
}
static uint8_t BlockToSector(int block_num) {
if (block_num < 32 * 4) { // 4 blocks per sector
return (block_num / 4);
} else { // 16 blocks per sector
return 32 + (block_num - 32 * 4) / 16;
}
}
static bool IsTrailerAccessAllowed(uint8_t blockNo, uint8_t keytype, uint8_t action) {
uint8_t sector_trailer[16];
emlGetMem(sector_trailer, blockNo, 1);
uint8_t AC = ((sector_trailer[7] >> 5) & 0x04)
| ((sector_trailer[8] >> 2) & 0x02)
| ((sector_trailer[8] >> 2) & 0x02)
| ((sector_trailer[8] >> 7) & 0x01);
switch (action) {
case AC_KEYA_READ: {
@ -69,8 +86,8 @@ static bool IsTrailerAccessAllowed(uint8_t blockNo, uint8_t keytype, uint8_t act
break;
}
case AC_KEYA_WRITE: {
return ((keytype == AUTHKEYA && (AC == 0x00 || AC == 0x01))
|| (keytype == AUTHKEYB && (AC == 0x04 || AC == 0x03)));
return ((keytype == AUTHKEYA && (AC == 0x00 || AC == 0x01))
|| (keytype == AUTHKEYB && (AC == 0x04 || AC == 0x03)));
break;
}
case AC_KEYB_READ: {
@ -79,17 +96,17 @@ static bool IsTrailerAccessAllowed(uint8_t blockNo, uint8_t keytype, uint8_t act
}
case AC_KEYB_WRITE: {
return ((keytype == AUTHKEYA && (AC == 0x00 || AC == 0x04))
|| (keytype == AUTHKEYB && (AC == 0x04 || AC == 0x03)));
|| (keytype == AUTHKEYB && (AC == 0x04 || AC == 0x03)));
break;
}
case AC_AC_READ: {
return ((keytype == AUTHKEYA)
|| (keytype == AUTHKEYB && !(AC == 0x00 || AC == 0x02 || AC == 0x01)));
|| (keytype == AUTHKEYB && !(AC == 0x00 || AC == 0x02 || AC == 0x01)));
break;
}
case AC_AC_WRITE: {
return ((keytype == AUTHKEYA && (AC == 0x01))
|| (keytype == AUTHKEYB && (AC == 0x03 || AC == 0x05)));
|| (keytype == AUTHKEYB && (AC == 0x03 || AC == 0x05)));
break;
}
default: return false;
@ -129,33 +146,33 @@ static bool IsDataAccessAllowed(uint8_t blockNo, uint8_t keytype, uint8_t action
| ((sector_trailer[8] >> 6) & 0x01);
break;
}
default:
default:
return false;
}
switch (action) {
case AC_DATA_READ: {
return ((keytype == AUTHKEYA && !(AC == 0x03 || AC == 0x05 || AC == 0x07))
|| (keytype == AUTHKEYB && !(AC == 0x07)));
|| (keytype == AUTHKEYB && !(AC == 0x07)));
break;
}
case AC_DATA_WRITE: {
return ((keytype == AUTHKEYA && (AC == 0x00))
|| (keytype == AUTHKEYB && (AC == 0x00 || AC == 0x04 || AC == 0x06 || AC == 0x03)));
|| (keytype == AUTHKEYB && (AC == 0x00 || AC == 0x04 || AC == 0x06 || AC == 0x03)));
break;
}
case AC_DATA_INC: {
return ((keytype == AUTHKEYA && (AC == 0x00))
|| (keytype == AUTHKEYB && (AC == 0x00 || AC == 0x06)));
|| (keytype == AUTHKEYB && (AC == 0x00 || AC == 0x06)));
break;
}
case AC_DATA_DEC_TRANS_REST: {
return ((keytype == AUTHKEYA && (AC == 0x00 || AC == 0x06 || AC == 0x01))
|| (keytype == AUTHKEYB && (AC == 0x00 || AC == 0x06 || AC == 0x01)));
|| (keytype == AUTHKEYB && (AC == 0x00 || AC == 0x06 || AC == 0x01)));
break;
}
}
return false;
}
@ -169,18 +186,18 @@ static bool IsAccessAllowed(uint8_t blockNo, uint8_t keytype, uint8_t action) {
}
static void MifareSimInit(uint8_t flags, uint8_t *datain, tag_response_info_t **responses, uint32_t *cuid, uint8_t *uid_len) {
static void MifareSimInit(uint8_t flags, uint8_t *datain, tag_response_info_t **responses, uint32_t *cuid, uint8_t *uid_len, uint8_t cardsize) {
#define TAG_RESPONSE_COUNT 5 // number of precompiled responses
static uint8_t rATQA[] = {0x04, 0x00}; // indicate Mifare classic 1k 4Byte UID
static uint8_t rUIDBCC1[] = {0x00, 0x00, 0x00, 0x00, 0x00}; // UID 1st cascade level
static uint8_t rUIDBCC2[] = {0x00, 0x00, 0x00, 0x00, 0x00}; // UID 2nd cascade level
static uint8_t rSAKfinal[]= {0x08, 0xb6, 0xdd}; // mifare 1k indicated
static uint8_t rSAK1[] = {0x04, 0xda, 0x17}; // indicate UID not finished
#define TAG_RESPONSE_COUNT 5 // number of precompiled responses
static uint8_t rATQA[] = {0x00, 0x00};
static uint8_t rUIDBCC1[] = {0x00, 0x00, 0x00, 0x00, 0x00}; // UID 1st cascade level
static uint8_t rUIDBCC2[] = {0x00, 0x00, 0x00, 0x00, 0x00}; // UID 2nd cascade level
static uint8_t rSAKfinal[]= {0x00, 0x00, 0x00}; // SAK after UID complete
static uint8_t rSAK1[] = {0x00, 0x00, 0x00}; // indicate UID not finished
*uid_len = 4;
// UID can be set from emulator memory or incoming data and can be 4 or 7 bytes long
if (flags & FLAG_4B_UID_IN_DATA) { // get UID from datain
if (flags & FLAG_4B_UID_IN_DATA) { // get UID from datain
memcpy(rUIDBCC1, datain, 4);
} else if (flags & FLAG_7B_UID_IN_DATA) {
rUIDBCC1[0] = 0x88;
@ -189,10 +206,10 @@ static void MifareSimInit(uint8_t flags, uint8_t *datain, tag_response_info_t **
*uid_len = 7;
} else {
uint8_t probable_atqa;
emlGetMemBt(&probable_atqa, 7, 1); // get UID from emul memory - weak guess at length
if (probable_atqa == 0x00) { // ---------- 4BUID
emlGetMemBt(&probable_atqa, 7, 1); // get UID from emul memory - weak guess at length
if (probable_atqa == 0x00) { // ---------- 4BUID
emlGetMemBt(rUIDBCC1, 0, 4);
} else { // ---------- 7BUID
} else { // ---------- 7BUID
rUIDBCC1[0] = 0x88;
emlGetMemBt(rUIDBCC1+1, 0, 3);
emlGetMemBt(rUIDBCC2, 3, 4);
@ -204,37 +221,65 @@ static void MifareSimInit(uint8_t flags, uint8_t *datain, tag_response_info_t **
case 4:
*cuid = bytes_to_num(rUIDBCC1, 4);
rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];
if (MF_DBGLEVEL >= 2) {
Dbprintf("4B UID: %02x%02x%02x%02x",
rUIDBCC1[0], rUIDBCC1[1], rUIDBCC1[2], rUIDBCC1[3] );
if (MF_DBGLEVEL >= 2) {
Dbprintf("4B UID: %02x%02x%02x%02x",
rUIDBCC1[0], rUIDBCC1[1], rUIDBCC1[2], rUIDBCC1[3] );
}
break;
case 7:
rATQA[0] |= 0x40;
*cuid = bytes_to_num(rUIDBCC2, 4);
rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];
rUIDBCC2[4] = rUIDBCC2[0] ^ rUIDBCC2[1] ^ rUIDBCC2[2] ^ rUIDBCC2[3];
if (MF_DBGLEVEL >= 2) {
rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];
rUIDBCC2[4] = rUIDBCC2[0] ^ rUIDBCC2[1] ^ rUIDBCC2[2] ^ rUIDBCC2[3];
if (MF_DBGLEVEL >= 2) {
Dbprintf("7B UID: %02x %02x %02x %02x %02x %02x %02x",
rUIDBCC1[1], rUIDBCC1[2], rUIDBCC1[3], rUIDBCC2[0], rUIDBCC2[1], rUIDBCC2[2], rUIDBCC2[3] );
}
break;
default:
default:
break;
}
// set SAK based on cardsize
switch (cardsize) {
case '0': rSAKfinal[0] = 0x09; break; // Mifare Mini
case '2': rSAKfinal[0] = 0x10; break; // Mifare 2K
case '4': rSAKfinal[0] = 0x18; break; // Mifare 4K
default: rSAKfinal[0] = 0x08; // Mifare 1K
}
ComputeCrc14443(CRC_14443_A, rSAKfinal, 1, rSAKfinal + 1, rSAKfinal + 2);
if (MF_DBGLEVEL >= 2) {
Dbprintf("SAK: %02x", rSAKfinal[0]);
}
// set SAK for incomplete UID
rSAK1[0] = 0x04; // Bit 3 indicates incomplete UID
ComputeCrc14443(CRC_14443_A, rSAK1, 1, rSAK1 + 1, rSAK1 + 2);
// set ATQA based on cardsize and UIDlen
if (cardsize == '4') {
rATQA[0] = 0x02;
} else {
rATQA[0] = 0x04;
}
if (*uid_len == 7) {
rATQA[0] |= 0x40;
}
if (MF_DBGLEVEL >= 2) {
Dbprintf("ATQA: %02x %02x", rATQA[1], rATQA[0]);
}
static tag_response_info_t responses_init[TAG_RESPONSE_COUNT] = {
{ .response = rATQA, .response_n = sizeof(rATQA) }, // Answer to request - respond with card type
{ .response = rUIDBCC1, .response_n = sizeof(rUIDBCC1) }, // Anticollision cascade1 - respond with first part of uid
{ .response = rUIDBCC2, .response_n = sizeof(rUIDBCC2) }, // Anticollision cascade2 - respond with 2nd part of uid
{ .response = rSAKfinal, .response_n = sizeof(rSAKfinal) }, // Acknowledge select - last cascade
{ .response = rSAK1, .response_n = sizeof(rSAK1) } // Acknowledge select - previous cascades
{ .response = rATQA, .response_n = sizeof(rATQA) }, // Answer to request - respond with card type
{ .response = rUIDBCC1, .response_n = sizeof(rUIDBCC1) }, // Anticollision cascade1 - respond with first part of uid
{ .response = rUIDBCC2, .response_n = sizeof(rUIDBCC2) }, // Anticollision cascade2 - respond with 2nd part of uid
{ .response = rSAKfinal, .response_n = sizeof(rSAKfinal) }, // Acknowledge select - last cascade
{ .response = rSAK1, .response_n = sizeof(rSAK1) } // Acknowledge select - previous cascades
};
// Prepare ("precompile") the responses of the anticollision phase. There will be not enough time to do this at the moment the reader sends its REQA or SELECT
// There are 7 predefined responses with a total of 18 bytes data to transmit. Coded responses need one byte per bit to transfer (data, parity, start, stop, correction)
// There are 7 predefined responses with a total of 18 bytes data to transmit. Coded responses need one byte per bit to transfer (data, parity, start, stop, correction)
// 18 * 8 data bits, 18 * 1 parity bits, 5 start bits, 5 stop bits, 5 correction bits -> need 177 bytes buffer
#define ALLOCATED_TAG_MODULATION_BUFFER_SIZE 177 // number of bytes required for precompiled responses
#define ALLOCATED_TAG_MODULATION_BUFFER_SIZE 177 // number of bytes required for precompiled responses
uint8_t *free_buffer_pointer = BigBuf_malloc(ALLOCATED_TAG_MODULATION_BUFFER_SIZE);
size_t free_buffer_size = ALLOCATED_TAG_MODULATION_BUFFER_SIZE;
@ -262,22 +307,24 @@ static bool HasValidCRC(uint8_t *receivedCmd, uint16_t receivedCmd_len) {
/**
*MIFARE 1K simulate.
*MIFARE simulate.
*
*@param flags :
* FLAG_INTERACTIVE - In interactive mode, we are expected to finish the operation with an ACK
* FLAG_INTERACTIVE - In interactive mode, we are expected to finish the operation with an ACK
* FLAG_4B_UID_IN_DATA - means that there is a 4-byte UID in the data-section, we're expected to use that
* FLAG_7B_UID_IN_DATA - means that there is a 7-byte UID in the data-section, we're expected to use that
* FLAG_10B_UID_IN_DATA - use 10-byte UID in the data-section not finished
* FLAG_NR_AR_ATTACK - means we should collect NR_AR responses for bruteforcing later
* FLAG_10B_UID_IN_DATA - use 10-byte UID in the data-section not finished
* FLAG_NR_AR_ATTACK - means we should collect NR_AR responses for bruteforcing later
* FLAG_RANDOM_NONCE - means we should generate some pseudo-random nonce data (only allows moebius attack)
*@param exitAfterNReads, exit simulation after n blocks have been read, 0 is infinite ...
* (unless reader attack mode enabled then it runs util it gets enough nonces to recover all keys attmpted)
*/
void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *datain)
void MifareSim(uint8_t flags, uint8_t exitAfterNReads, uint8_t cardsize, uint8_t *datain)
{
LED_A_ON();
tag_response_info_t *responses;
uint8_t uid_len = 4;
uint8_t uid_len = 4;
uint32_t cuid = 0;
uint8_t cardWRBL = 0;
uint8_t cardAUTHSC = 0;
@ -297,25 +344,27 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
uint16_t receivedCmd_len;
uint8_t response[MAX_MIFARE_FRAME_SIZE];
uint8_t response_par[MAX_MIFARE_PARITY_SIZE];
uint8_t rAUTH_NT[] = {0x01, 0x02, 0x03, 0x04};
uint8_t rAUTH_AT[] = {0x00, 0x00, 0x00, 0x00};
//Here, we collect UID,sector,keytype,NT,AR,NR,NT2,AR2,NR2
int num_blocks = ParamCardSizeBlocks(cardsize);
// Here we collect UID, sector, keytype, NT, AR, NR, NT2, AR2, NR2
// This will be used in the reader-only attack.
//allow collecting up to 7 sets of nonces to allow recovery of up to 7 keys
// allow collecting up to 7 sets of nonces to allow recovery of up to 7 keys
#define ATTACK_KEY_COUNT 7 // keep same as define in cmdhfmf.c -> readerAttack() (Cannot be more than 7)
nonces_t ar_nr_resp[ATTACK_KEY_COUNT*2]; //*2 for 2 separate attack types (nml, moebius) 36 * 7 * 2 bytes = 504 bytes
nonces_t ar_nr_resp[ATTACK_KEY_COUNT*2]; // *2 for 2 separate attack types (nml, moebius) 36 * 7 * 2 bytes = 504 bytes
memset(ar_nr_resp, 0x00, sizeof(ar_nr_resp));
uint8_t ar_nr_collected[ATTACK_KEY_COUNT*2]; //*2 for 2nd attack type (moebius)
uint8_t ar_nr_collected[ATTACK_KEY_COUNT*2]; // *2 for 2nd attack type (moebius)
memset(ar_nr_collected, 0x00, sizeof(ar_nr_collected));
uint8_t nonce1_count = 0;
uint8_t nonce2_count = 0;
uint8_t moebius_n_count = 0;
uint8_t nonce1_count = 0;
uint8_t nonce2_count = 0;
uint8_t moebius_n_count = 0;
bool gettingMoebius = false;
uint8_t mM = 0; //moebius_modifier for collection storage
uint8_t mM = 0; // moebius_modifier for collection storage
// Authenticate response - nonce
uint32_t nonce;
@ -328,8 +377,8 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
// free eventually allocated BigBuf memory but keep Emulator Memory
BigBuf_free_keep_EM();
MifareSimInit(flags, datain, &responses, &cuid, &uid_len);
MifareSimInit(flags, datain, &responses, &cuid, &uid_len, cardsize);
// We need to listen to the high-frequency, peak-detected path.
iso14443a_setup(FPGA_HF_ISO14443A_TAGSIM_LISTEN);
@ -337,7 +386,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
clear_trace();
set_tracing(true);
ResetSspClk();
bool finished = false;
bool button_pushed = BUTTON_PRESS();
int cardSTATE = MFEMUL_NOFIELD;
@ -349,18 +398,19 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
if (cardSTATE == MFEMUL_NOFIELD) {
int vHf = (MAX_ADC_HF_VOLTAGE_LOW * AvgAdc(ADC_CHAN_HF_LOW)) >> 10;
if (vHf > MF_MINFIELDV) {
LED_A_ON();
cardSTATE_TO_IDLE();
LED_D_ON();
cardSTATE = MFEMUL_IDLE;
}
button_pushed = BUTTON_PRESS();
continue;
}
FpgaEnableTracing();
//Now, get data
int res = EmGetCmd(receivedCmd, &receivedCmd_len, receivedCmd_par);
if (res == 2) { //Field is off!
LEDsoff();
LED_D_OFF();
cardSTATE = MFEMUL_NOFIELD;
continue;
} else if (res == 1) { // button pressed
@ -371,6 +421,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
// WUPA in HALTED state or REQA or WUPA in any other state
if (receivedCmd_len == 1 && ((receivedCmd[0] == ISO14443A_CMD_REQA && cardSTATE != MFEMUL_HALTED) || receivedCmd[0] == ISO14443A_CMD_WUPA)) {
EmSendPrecompiledCmd(&responses[ATQA]);
FpgaDisableTracing();
// init crypto block
crypto1_destroy(pcs);
@ -378,12 +429,10 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
if (flags & FLAG_RANDOM_NONCE) {
nonce = prand();
}
LED_B_OFF();
LED_C_OFF();
cardSTATE = MFEMUL_SELECT1;
continue;
}
switch (cardSTATE) {
case MFEMUL_NOFIELD:
case MFEMUL_HALTED:
@ -393,8 +442,9 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
case MFEMUL_SELECT1:{
// select all - 0x93 0x20
if (receivedCmd_len == 2 && (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT && receivedCmd[1] == 0x20)) {
if (MF_DBGLEVEL >= 4) Dbprintf("SELECT ALL CL1 received");
if (MF_DBGLEVEL >= 4) Dbprintf("SELECT ALL CL1 received");
EmSendPrecompiledCmd(&responses[UIDBCC1]);
FpgaDisableTracing();
break;
}
// select card - 0x93 0x70 ...
@ -403,41 +453,44 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
if (MF_DBGLEVEL >= 4) Dbprintf("SELECT CL1 %02x%02x%02x%02x received",receivedCmd[2],receivedCmd[3],receivedCmd[4],receivedCmd[5]);
if (uid_len == 4) {
EmSendPrecompiledCmd(&responses[SAKfinal]);
LED_B_ON();
FpgaDisableTracing();
cardSTATE = MFEMUL_WORK;
break;
} else if (uid_len == 7) {
EmSendPrecompiledCmd(&responses[SAK1]);
cardSTATE = MFEMUL_SELECT2;
FpgaDisableTracing();
cardSTATE = MFEMUL_SELECT2;
break;
}
}
cardSTATE_TO_IDLE();
cardSTATE = MFEMUL_IDLE;
break;
}
case MFEMUL_SELECT2:{
// select all cl2 - 0x95 0x20
if (receivedCmd_len == 2 && (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_2 && receivedCmd[1] == 0x20)) {
if (MF_DBGLEVEL >= 4) Dbprintf("SELECT ALL CL2 received");
if (MF_DBGLEVEL >= 4) Dbprintf("SELECT ALL CL2 received");
EmSendPrecompiledCmd(&responses[UIDBCC2]);
FpgaDisableTracing();
break;
}
// select cl2 card - 0x95 0x70 xxxxxxxxxxxx
if (receivedCmd_len == 9 &&
if (receivedCmd_len == 9 &&
(receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_2 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], responses[UIDBCC2].response, 4) == 0)) {
if (uid_len == 7) {
if (MF_DBGLEVEL >= 4) Dbprintf("SELECT CL2 %02x%02x%02x%02x received",receivedCmd[2],receivedCmd[3],receivedCmd[4],receivedCmd[5]);
EmSendPrecompiledCmd(&responses[SAKfinal]);
LED_B_ON();
FpgaDisableTracing();
cardSTATE = MFEMUL_WORK;
break;
}
}
cardSTATE_TO_IDLE();
cardSTATE = MFEMUL_IDLE;
break;
}
case MFEMUL_WORK:{
if (receivedCmd_len != 4) { // all commands must have exactly 4 bytes
if (receivedCmd_len != 4) { // all commands must have exactly 4 bytes
FpgaDisableTracing();
break;
}
bool encrypted_data = (cardAUTHKEY != AUTHKEYNONE) ;
@ -448,35 +501,43 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
memcpy(receivedCmd_dec, receivedCmd, receivedCmd_len);
}
if (!HasValidCRC(receivedCmd_dec, receivedCmd_len)) { // all commands must have a valid CRC
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_TR));
FpgaDisableTracing();
break;
}
if (receivedCmd_dec[0] == MIFARE_AUTH_KEYA || receivedCmd_dec[0] == MIFARE_AUTH_KEYB) {
// if authenticating to a block that shouldn't exist - as long as we are not doing the reader attack
if (receivedCmd_dec[1] >= 16 * 4 && !(flags & FLAG_NR_AR_ATTACK)) {
if (receivedCmd_dec[1] >= num_blocks && !(flags & FLAG_NR_AR_ATTACK)) {
//is this the correct response to an auth on a out of range block? marshmellow
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
if (MF_DBGLEVEL >= 2) Dbprintf("Reader tried to operate (0x%02x) on out of range block: %d (0x%02x), nacking",receivedCmd_dec[0],receivedCmd_dec[1],receivedCmd_dec[1]);
FpgaDisableTracing();
if (MF_DBGLEVEL >= 2) Dbprintf("Reader tried to operate (0x%02x) on out of range block: %d (0x%02x), nacking", receivedCmd_dec[0], receivedCmd_dec[1], receivedCmd_dec[1]);
break;
}
cardAUTHSC = receivedCmd_dec[1] / 4; // received block num
cardAUTHSC = BlockToSector(receivedCmd_dec[1]); // received block num
cardAUTHKEY = receivedCmd_dec[0] & 0x01;
crypto1_destroy(pcs);//Added by martin
crypto1_create(pcs, emlGetKey(cardAUTHSC, cardAUTHKEY));
if (!encrypted_data) { // first authentication
if (MF_DBGLEVEL >= 4) Dbprintf("Reader authenticating for block %d (0x%02x) with key %d",receivedCmd_dec[1], receivedCmd_dec[1], cardAUTHKEY);
crypto1_word(pcs, cuid ^ nonce, 0);//Update crypto state
num_to_bytes(nonce, 4, rAUTH_AT); // Send nonce
if (MF_DBGLEVEL >= 4) Dbprintf("Reader authenticating for block %d (0x%02x) with key %d", receivedCmd_dec[1], receivedCmd_dec[1], cardAUTHKEY);
crypto1_word(pcs, cuid ^ nonce, 0); // Update crypto state
num_to_bytes(nonce, 4, rAUTH_AT); // Send unencrypted nonce
EmSendCmd(rAUTH_AT, sizeof(rAUTH_AT));
} else { // nested authentication
if (MF_DBGLEVEL >= 4) Dbprintf("Reader doing nested authentication for block %d (0x%02x) with key %d", receivedCmd_dec[1], receivedCmd_dec[1], cardAUTHKEY);
ans = nonce ^ crypto1_word(pcs, cuid ^ nonce, 0);
num_to_bytes(ans, 4, rAUTH_AT);
num_to_bytes(nonce, sizeof(nonce), response);
uint8_t pcs_in[4] = {0};
num_to_bytes(cuid ^ nonce, sizeof(nonce), pcs_in);
mf_crypto1_encryptEx(pcs, response, pcs_in, sizeof(nonce), response_par);
EmSendCmdPar(response, sizeof(nonce), response_par); // send encrypted nonce
}
EmSendCmd(rAUTH_AT, sizeof(rAUTH_AT));
FpgaDisableTracing();
cardSTATE = MFEMUL_AUTH1;
break;
}
if (!encrypted_data) { // all other commands must be encrypted (authenticated)
FpgaDisableTracing();
break;
}
if(receivedCmd_dec[0] == ISO14443A_CMD_READBLOCK
@ -485,13 +546,15 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
|| receivedCmd_dec[0] == MIFARE_CMD_DEC
|| receivedCmd_dec[0] == MIFARE_CMD_RESTORE
|| receivedCmd_dec[0] == MIFARE_CMD_TRANSFER) {
if (receivedCmd_dec[1] >= 16 * 4) {
if (receivedCmd_dec[1] >= num_blocks) {
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
FpgaDisableTracing();
if (MF_DBGLEVEL >= 2) Dbprintf("Reader tried to operate (0x%02x) on out of range block: %d (0x%02x), nacking",receivedCmd_dec[0],receivedCmd_dec[1],receivedCmd_dec[1]);
break;
}
if (receivedCmd_dec[1] / 4 != cardAUTHSC) {
if (BlockToSector(receivedCmd_dec[1]) != cardAUTHSC) {
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
FpgaDisableTracing();
if (MF_DBGLEVEL >= 2) Dbprintf("Reader tried to operate (0x%02x) on block (0x%02x) not authenticated for (0x%02x), nacking",receivedCmd_dec[0],receivedCmd_dec[1],cardAUTHSC);
break;
}
@ -503,21 +566,22 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
}
emlGetMem(response, blockNo, 1);
if (IsSectorTrailer(blockNo)) {
memset(response, 0x00, 6); // keyA can never be read
memset(response, 0x00, 6); // keyA can never be read
if (!IsAccessAllowed(blockNo, cardAUTHKEY, AC_KEYB_READ)) {
memset(response+10, 0x00, 6); // keyB cannot be read
memset(response+10, 0x00, 6); // keyB cannot be read
}
if (!IsAccessAllowed(blockNo, cardAUTHKEY, AC_AC_READ)) {
memset(response+6, 0x00, 4); // AC bits cannot be read
memset(response+6, 0x00, 4); // AC bits cannot be read
}
} else {
if (!IsAccessAllowed(blockNo, cardAUTHKEY, AC_DATA_READ)) {
memset(response, 0x00, 16); // datablock cannot be read
memset(response, 0x00, 16); // datablock cannot be read
}
}
AppendCrc14443a(response, 16);
mf_crypto1_encrypt(pcs, response, 18, response_par);
EmSendCmdPar(response, 18, response_par);
FpgaDisableTracing();
numReads++;
if(exitAfterNReads > 0 && numReads == exitAfterNReads) {
Dbprintf("%d reads done, exiting", numReads);
@ -529,6 +593,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
uint8_t blockNo = receivedCmd_dec[1];
if (MF_DBGLEVEL >= 4) Dbprintf("RECV 0xA0 write block %d (%02x)", blockNo, blockNo);
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK));
FpgaDisableTracing();
cardWRBL = blockNo;
cardSTATE = MFEMUL_WRITEBL2;
break;
@ -539,9 +604,11 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
if (emlCheckValBl(blockNo)) {
if (MF_DBGLEVEL >= 2) Dbprintf("Reader tried to operate on block, but emlCheckValBl failed, nacking");
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
FpgaDisableTracing();
break;
}
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK));
FpgaDisableTracing();
cardWRBL = blockNo;
if (receivedCmd_dec[0] == MIFARE_CMD_INC)
cardSTATE = MFEMUL_INTREG_INC;
@ -558,24 +625,23 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
else
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK));
FpgaDisableTracing();
break;
}
// halt
if (receivedCmd_dec[0] == ISO14443A_CMD_HALT && receivedCmd_dec[1] == 0x00) {
if (MF_DBGLEVEL >= 4) Dbprintf("--> HALTED.");
LED_B_OFF();
LED_C_OFF();
if (MF_DBGLEVEL >= 4) Dbprintf("--> HALTED.");
cardSTATE = MFEMUL_HALTED;
break;
}
// command not allowed
if (MF_DBGLEVEL >= 4) Dbprintf("Received command not allowed, nacking");
if (MF_DBGLEVEL >= 4) Dbprintf("Received command not allowed, nacking");
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
break;
}
case MFEMUL_AUTH1:{
if (receivedCmd_len != 8) {
cardSTATE_TO_IDLE();
cardSTATE = MFEMUL_IDLE;
break;
}
@ -590,7 +656,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
if (ar_nr_collected[i+mM] < 2) {
// if we haven't already collected 2 nonces for this sector
if (ar_nr_resp[ar_nr_collected[i+mM]].ar != ar) {
// Avoid duplicates... probably not necessary, ar should vary.
// Avoid duplicates... probably not necessary, ar should vary.
if (ar_nr_collected[i+mM]==0) {
// first nonce collect
ar_nr_resp[i+mM].cuid = cuid;
@ -618,7 +684,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
if ( nonce2_count == nonce1_count ) {
// done collecting std test switch to moebius
// first finish incrementing last sample
ar_nr_collected[i+mM]++;
ar_nr_collected[i+mM]++;
// switch to moebius collection
gettingMoebius = true;
mM = ATTACK_KEY_COUNT;
@ -657,15 +723,16 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
// Right now, we don't nack or anything, which causes the
// reader to do a WUPA after a while. /Martin
// -- which is the correct response. /piwi
cardAUTHKEY = AUTHKEYNONE; // not authenticated
cardSTATE_TO_IDLE();
cardAUTHKEY = AUTHKEYNONE; // not authenticated
cardSTATE = MFEMUL_IDLE;
break;
}
ans = prng_successor(nonce, 96) ^ crypto1_word(pcs, 0, 0);
num_to_bytes(ans, 4, rAUTH_AT);
EmSendCmd(rAUTH_AT, sizeof(rAUTH_AT));
if (MF_DBGLEVEL >= 4) Dbprintf("AUTH COMPLETED for sector %d with key %c.", cardAUTHSC, cardAUTHKEY == AUTHKEYA ? 'A' : 'B');
LED_C_ON();
ans = prng_successor(nonce, 96);
num_to_bytes(ans, 4, response);
mf_crypto1_encrypt(pcs, response, 4, response_par);
EmSendCmdPar(response, 4, response_par);
FpgaDisableTracing();
if (MF_DBGLEVEL >= 4) Dbprintf("AUTH COMPLETED for sector %d with key %c.", cardAUTHSC, cardAUTHKEY == AUTHKEYA ? 'A' : 'B');
cardSTATE = MFEMUL_WORK;
break;
}
@ -676,26 +743,27 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
if (IsSectorTrailer(cardWRBL)) {
emlGetMem(response, cardWRBL, 1);
if (!IsAccessAllowed(cardWRBL, cardAUTHKEY, AC_KEYA_WRITE)) {
memcpy(receivedCmd_dec, response, 6); // don't change KeyA
memcpy(receivedCmd_dec, response, 6); // don't change KeyA
}
if (!IsAccessAllowed(cardWRBL, cardAUTHKEY, AC_KEYB_WRITE)) {
memcpy(receivedCmd_dec+10, response+10, 6); // don't change KeyA
memcpy(receivedCmd_dec+10, response+10, 6); // don't change KeyA
}
if (!IsAccessAllowed(cardWRBL, cardAUTHKEY, AC_AC_WRITE)) {
memcpy(receivedCmd_dec+6, response+6, 4); // don't change AC bits
memcpy(receivedCmd_dec+6, response+6, 4); // don't change AC bits
}
} else {
if (!IsAccessAllowed(cardWRBL, cardAUTHKEY, AC_DATA_WRITE)) {
memcpy(receivedCmd_dec, response, 16); // don't change anything
memcpy(receivedCmd_dec, response, 16); // don't change anything
}
}
emlSetMem(receivedCmd_dec, cardWRBL, 1);
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK)); // always ACK?
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK)); // always ACK?
FpgaDisableTracing();
cardSTATE = MFEMUL_WORK;
break;
}
}
cardSTATE_TO_IDLE();
cardSTATE = MFEMUL_IDLE;
break;
}
case MFEMUL_INTREG_INC:{
@ -703,7 +771,8 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
mf_crypto1_decryptEx(pcs, receivedCmd, receivedCmd_len, (uint8_t*)&ans);
if (emlGetValBl(&cardINTREG, &cardINTBLOCK, cardWRBL)) {
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
cardSTATE_TO_IDLE();
FpgaDisableTracing();
cardSTATE = MFEMUL_IDLE;
break;
}
cardINTREG = cardINTREG + ans;
@ -716,7 +785,8 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
mf_crypto1_decryptEx(pcs, receivedCmd, receivedCmd_len, (uint8_t*)&ans);
if (emlGetValBl(&cardINTREG, &cardINTBLOCK, cardWRBL)) {
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
cardSTATE_TO_IDLE();
FpgaDisableTracing();
cardSTATE = MFEMUL_IDLE;
break;
}
}
@ -728,7 +798,8 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
mf_crypto1_decryptEx(pcs, receivedCmd, receivedCmd_len, (uint8_t*)&ans);
if (emlGetValBl(&cardINTREG, &cardINTBLOCK, cardWRBL)) {
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
cardSTATE_TO_IDLE();
FpgaDisableTracing();
cardSTATE = MFEMUL_IDLE;
break;
}
cardSTATE = MFEMUL_WORK;
@ -742,7 +813,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
LEDsoff();
if(flags & FLAG_NR_AR_ATTACK && MF_DBGLEVEL >= 1) {
for ( uint8_t i = 0; i < ATTACK_KEY_COUNT; i++) {
for ( uint8_t i = 0; i < ATTACK_KEY_COUNT; i++) {
if (ar_nr_collected[i] == 2) {
Dbprintf("Collected two pairs of AR/NR which can be used to extract %s from reader for sector %d:", (i<ATTACK_KEY_COUNT/2) ? "keyA" : "keyB", ar_nr_resp[i].sector);
Dbprintf("../tools/mfkey/mfkey32 %08x %08x %08x %08x %08x %08x",
@ -754,11 +825,11 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
ar_nr_resp[i].ar2 //AR2
);
}
}
for ( uint8_t i = ATTACK_KEY_COUNT; i < ATTACK_KEY_COUNT*2; i++) {
}
for ( uint8_t i = ATTACK_KEY_COUNT; i < ATTACK_KEY_COUNT*2; i++) {
if (ar_nr_collected[i] == 2) {
Dbprintf("Collected two pairs of AR/NR which can be used to extract %s from reader for sector %d:", (i<ATTACK_KEY_COUNT/2) ? "keyA" : "keyB", ar_nr_resp[i].sector);
Dbprintf("../tools/mfkey/mfkey32v2 %08x %08x %08x %08x %08x %08x %08x",
Dbprintf("../tools/mfkey/mfkey32 %08x %08x %08x %08x %08x %08x %08x",
ar_nr_resp[i].cuid, //UID
ar_nr_resp[i].nonce, //NT
ar_nr_resp[i].nr, //NR1
@ -770,10 +841,12 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
}
}
}
if (MF_DBGLEVEL >= 1) Dbprintf("Emulator stopped. Tracing: %d trace length: %d ", get_tracing(), BigBuf_get_traceLen());
if (MF_DBGLEVEL >= 1) Dbprintf("Emulator stopped. Tracing: %d trace length: %d ", get_tracing(), BigBuf_get_traceLen());
if(flags & FLAG_INTERACTIVE) { // Interactive mode flag, means we need to send ACK
//Send the collected ar_nr in the response
cmd_send(CMD_ACK,CMD_SIMULATE_MIFARE_CARD,button_pushed,0,&ar_nr_resp,sizeof(ar_nr_resp));
cmd_send(CMD_ACK, CMD_SIMULATE_MIFARE_CARD, button_pushed, 0, &ar_nr_resp, sizeof(ar_nr_resp));
}
LED_A_OFF();
}

2
armsrc/mifaresim.h
View file

@ -15,6 +15,6 @@
#include <stdint.h>
extern void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *datain);
extern void MifareSim(uint8_t flags, uint8_t exitAfterNReads, uint8_t cardsize, uint8_t *datain);
#endif

8
armsrc/mifareutil.c
View file

@ -47,14 +47,14 @@ void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
mf_crypto1_decryptEx(pcs, data, len, data);
}
void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {
void mf_crypto1_encryptEx(struct Crypto1State *pcs, uint8_t *data, uint8_t *in, uint16_t len, uint8_t *par) {
uint8_t bt = 0;
int i;
par[0] = 0;
for (i = 0; i < len; i++) {
bt = data[i];
data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
data[i] = crypto1_byte(pcs, in==NULL?0x00:in[i], 0) ^ data[i];
if((i&0x0007) == 0)
par[i>>3] = 0;
par[i>>3] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007)));
@ -62,6 +62,10 @@ void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, u
return;
}
void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {
mf_crypto1_encryptEx(pcs, data, NULL, len, par);
}
uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
uint8_t bt = 0;
int i;

1
armsrc/mifareutil.h
View file

@ -71,6 +71,7 @@ int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData);
void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *receivedCmd, int len);
void mf_crypto1_decryptEx(struct Crypto1State *pcs, uint8_t *data_in, int len, uint8_t *data_out);
void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par);
void mf_crypto1_encryptEx(struct Crypto1State *pcs, uint8_t *data, uint8_t *in, uint16_t len, uint8_t *par);
uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data);
// Mifare memory structure

89
client/cmdhfmf.c
View file

@ -254,14 +254,14 @@ uint8_t NumBlocksPerSector(uint8_t sectorNo)
}
static int ParamCardSizeSectors(const char c) {
int numBlocks = 16;
int numSectors = 16;
switch (c) {
case '0' : numBlocks = 5; break;
case '2' : numBlocks = 32; break;
case '4' : numBlocks = 40; break;
default: numBlocks = 16;
case '0' : numSectors = 5; break;
case '2' : numSectors = 32; break;
case '4' : numSectors = 40; break;
default: numSectors = 16;
}
return numBlocks;
return numSectors;
}
static int ParamCardSizeBlocks(const char c) {
@ -1421,11 +1421,12 @@ void readerAttack(nonces_t ar_resp[], bool setEmulatorMem, bool doStandardAttack
}*/
}
int usage_hf14_mf1ksim(void) {
PrintAndLog("Usage: hf mf sim h u <uid (8, 14, or 20 hex symbols)> n <numreads> i x");
int usage_hf14_mfsim(void) {
PrintAndLog("Usage: hf mf sim [h] [*<card memory>] [u <uid (8, 14, or 20 hex symbols)>] [n <numreads>] [i] [x]");
PrintAndLog("options:");
PrintAndLog(" h this help");
PrintAndLog(" u (Optional) UID 4,7 or 10 bytes. If not specified, the UID 4B from emulator memory will be used");
PrintAndLog(" h (Optional) this help");
PrintAndLog(" card memory: 0 - MINI(320 bytes), 1 - 1K, 2 - 2K, 4 - 4K, <other, default> - 1K");
PrintAndLog(" u (Optional) UID 4 or 7 bytes. If not specified, the UID 4B from emulator memory will be used");
PrintAndLog(" n (Optional) Automatically exit simulation after <numreads> blocks have been read by reader. 0 = infinite");
PrintAndLog(" i (Optional) Interactive, means that console will not be returned until simulation finishes or is aborted");
PrintAndLog(" x (Optional) Crack, performs the 'reader attack', nr/ar attack against a legitimate reader, fishes out the key(s)");
@ -1434,21 +1435,20 @@ int usage_hf14_mf1ksim(void) {
PrintAndLog(" r (Optional) Generate random nonces instead of sequential nonces. Standard reader attack won't work with this option, only moebius attack works.");
PrintAndLog("samples:");
PrintAndLog(" hf mf sim u 0a0a0a0a");
PrintAndLog(" hf mf sim *4");
PrintAndLog(" hf mf sim u 11223344556677");
PrintAndLog(" hf mf sim u 112233445566778899AA");
PrintAndLog(" hf mf sim f uids.txt");
PrintAndLog(" hf mf sim u 0a0a0a0a e");
return 0;
}
int CmdHF14AMf1kSim(const char *Cmd) {
int CmdHF14AMfSim(const char *Cmd) {
UsbCommand resp;
uint8_t uid[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
uint8_t exitAfterNReads = 0;
uint8_t flags = 0;
int uidlen = 0;
uint8_t pnr = 0;
bool setEmulatorMem = false;
bool attackFromFile = false;
FILE *f;
@ -1459,9 +1459,21 @@ int CmdHF14AMf1kSim(const char *Cmd) {
uint8_t cmdp = 0;
bool errors = false;
uint8_t cardsize = '1';
while(param_getchar(Cmd, cmdp) != 0x00) {
switch(param_getchar(Cmd, cmdp)) {
case '*':
cardsize = param_getchar(Cmd + 1, cmdp);
switch(cardsize) {
case '0':
case '1':
case '2':
case '4': break;
default: cardsize = '1';
}
cmdp++;
break;
case 'e':
case 'E':
setEmulatorMem = true;
@ -1485,7 +1497,7 @@ int CmdHF14AMf1kSim(const char *Cmd) {
break;
case 'h':
case 'H':
return usage_hf14_mf1ksim();
return usage_hf14_mfsim();
case 'i':
case 'I':
flags |= FLAG_INTERACTIVE;
@ -1493,7 +1505,7 @@ int CmdHF14AMf1kSim(const char *Cmd) {
break;
case 'n':
case 'N':
exitAfterNReads = param_get8(Cmd, pnr+1);
exitAfterNReads = param_get8(Cmd, cmdp+1);
cmdp += 2;
break;
case 'r':
@ -1505,10 +1517,9 @@ int CmdHF14AMf1kSim(const char *Cmd) {
case 'U':
param_gethex_ex(Cmd, cmdp+1, uid, &uidlen);
switch(uidlen) {
case 20: flags = FLAG_10B_UID_IN_DATA; break; //not complete
case 14: flags = FLAG_7B_UID_IN_DATA; break;
case 8: flags = FLAG_4B_UID_IN_DATA; break;
default: return usage_hf14_mf1ksim();
default: return usage_hf14_mfsim();
}
cmdp += 2;
break;
@ -1525,7 +1536,7 @@ int CmdHF14AMf1kSim(const char *Cmd) {
if(errors) break;
}
//Validations
if(errors) return usage_hf14_mf1ksim();
if(errors) return usage_hf14_mfsim();
//get uid from file
if (attackFromFile) {
@ -1565,13 +1576,18 @@ int CmdHF14AMf1kSim(const char *Cmd) {
sscanf(&buf[i], "%02x", (unsigned int *)&uid[i / 2]);
}
PrintAndLog("mf 1k sim uid: %s, numreads:%d, flags:%d (0x%02x) - press button to abort",
flags & FLAG_4B_UID_IN_DATA ? sprint_hex(uid,4):
flags & FLAG_7B_UID_IN_DATA ? sprint_hex(uid,7):
flags & FLAG_10B_UID_IN_DATA ? sprint_hex(uid,10): "N/A"
, exitAfterNReads, flags, flags);
PrintAndLog("mf sim cardsize: %s, uid: %s, numreads:%d, flags:%d (0x%02x) - press button to abort",
cardsize == '0' ? "Mini" :
cardsize == '2' ? "2K" :
cardsize == '4' ? "4K" : "1K",
flags & FLAG_4B_UID_IN_DATA ? sprint_hex(uid,4):
flags & FLAG_7B_UID_IN_DATA ? sprint_hex(uid,7):
flags & FLAG_10B_UID_IN_DATA ? sprint_hex(uid,10): "N/A",
exitAfterNReads,
flags,
flags);
UsbCommand c = {CMD_SIMULATE_MIFARE_CARD, {flags, exitAfterNReads,0}};
UsbCommand c = {CMD_SIMULATE_MIFARE_CARD, {flags, exitAfterNReads, cardsize}};
memcpy(c.d.asBytes, uid, sizeof(uid));
clearCommandBuffer();
SendCommand(&c);
@ -1595,20 +1611,25 @@ int CmdHF14AMf1kSim(const char *Cmd) {
fclose(f);
} else { //not from file
PrintAndLog("mf 1k sim uid: %s, numreads:%d, flags:%d (0x%02x) ",
flags & FLAG_4B_UID_IN_DATA ? sprint_hex(uid,4):
flags & FLAG_7B_UID_IN_DATA ? sprint_hex(uid,7):
flags & FLAG_10B_UID_IN_DATA ? sprint_hex(uid,10): "N/A"
, exitAfterNReads, flags, flags);
PrintAndLog("mf sim cardsize: %s, uid: %s, numreads:%d, flags:%d (0x%02x) ",
cardsize == '0' ? "Mini" :
cardsize == '2' ? "2K" :
cardsize == '4' ? "4K" : "1K",
flags & FLAG_4B_UID_IN_DATA ? sprint_hex(uid,4):
flags & FLAG_7B_UID_IN_DATA ? sprint_hex(uid,7):
flags & FLAG_10B_UID_IN_DATA ? sprint_hex(uid,10): "N/A",
exitAfterNReads,
flags,
flags);
UsbCommand c = {CMD_SIMULATE_MIFARE_CARD, {flags, exitAfterNReads,0}};
UsbCommand c = {CMD_SIMULATE_MIFARE_CARD, {flags, exitAfterNReads, cardsize}};
memcpy(c.d.asBytes, uid, sizeof(uid));
clearCommandBuffer();
SendCommand(&c);
if(flags & FLAG_INTERACTIVE) {
PrintAndLog("Press pm3-button to abort simulation");
while(! WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
while(! WaitForResponseTimeout(CMD_ACK, &resp, 1500)) {
//We're waiting only 1.5 s at a time, otherwise we get the
// annoying message about "Waiting for a response... "
}
@ -1745,7 +1766,7 @@ int CmdHF14AMfELoad(const char *Cmd)
}
}
len = param_getstr(Cmd,nameParamNo,filename,sizeof(filename));
len = param_getstr(Cmd, nameParamNo, filename, sizeof(filename));
if (len > FILE_PATH_SIZE - 5) len = FILE_PATH_SIZE - 5;
@ -2925,8 +2946,8 @@ static command_t CommandTable[] =
{"hardnested", CmdHF14AMfNestedHard, 0, "Nested attack for hardened Mifare cards"},
{"nested", CmdHF14AMfNested, 0, "Test nested authentication"},
{"sniff", CmdHF14AMfSniff, 0, "Sniff card-reader communication"},
{"sim", CmdHF14AMf1kSim, 0, "Simulate MIFARE card"},
{"eclr", CmdHF14AMfEClear, 0, "Clear simulator memory block"},
{"sim", CmdHF14AMfSim, 0, "Simulate MIFARE card"},
{"eclr", CmdHF14AMfEClear, 0, "Clear simulator memory"},
{"eget", CmdHF14AMfEGet, 0, "Get simulator memory block"},
{"eset", CmdHF14AMfESet, 0, "Set simulator memory block"},
{"eload", CmdHF14AMfELoad, 0, "Load from file emul dump"},