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https://github.com/Proxmark/proxmark3.git
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split io demod/pyramid demod to respective files
out of cmddata.c / data cmds see changelog.md for cli changes as options have changed!
This commit is contained in:
marshmellow42
parent
ecbf82fe20
commit
cf4640b973
7 changed files with 248 additions and 261 deletions
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@ -9,13 +9,12 @@
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#include <string.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include "cmdlfpyramid.h"
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#include "proxmark3.h"
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#include "ui.h"
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#include "util.h"
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#include "graph.h"
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#include "cmdparser.h"
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#include "cmddata.h"
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#include "cmddata.h" // setDemodBuf +
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#include "cmdmain.h"
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#include "cmdlf.h"
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#include "protocols.h" // for T55xx config register definitions
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@ -27,7 +26,7 @@ static int CmdHelp(const char *Cmd);
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int usage_lf_pyramid_clone(void){
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PrintAndLog("clone a Farpointe/Pyramid tag to a T55x7 tag.");
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PrintAndLog("The facility-code is 8-bit and the card number is 16-bit. Larger values are truncated. ");
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PrintAndLog("Currently work only on 26bit");
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PrintAndLog("Currently only works on 26bit");
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PrintAndLog("");
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PrintAndLog("Usage: lf pyramid clone <Facility-Code> <Card-Number>");
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PrintAndLog("Options :");
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@ -85,6 +84,145 @@ int GetPyramidBits(uint32_t fc, uint32_t cn, uint8_t *pyramidBits) {
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return 1;
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}
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//by marshmellow
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//Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
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//print full Farpointe Data/Pyramid Prox ID and some bit format details if found
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int CmdFSKdemodPyramid(const char *Cmd)
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{
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//raw fsk demod no manchester decoding no start bit finding just get binary from wave
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uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
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size_t size = getFromGraphBuf(BitStream);
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if (size==0) return 0;
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//get binary from fsk wave
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int idx = PyramiddemodFSK(BitStream, &size);
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if (idx < 0){
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if (g_debugMode){
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if (idx == -5)
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PrintAndLog("DEBUG: Error - not enough samples");
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else if (idx == -1)
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PrintAndLog("DEBUG: Error - only noise found");
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else if (idx == -2)
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PrintAndLog("DEBUG: Error - problem during FSK demod");
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else if (idx == -3)
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PrintAndLog("DEBUG: Error - Size not correct: %d", size);
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else if (idx == -4)
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PrintAndLog("DEBUG: Error - Pyramid preamble not found");
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else
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PrintAndLog("DEBUG: Error - idx: %d",idx);
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}
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return 0;
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}
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// Index map
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// 0 10 20 30 40 50 60
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// | | | | | | |
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// 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
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// -----------------------------------------------------------------------------
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// 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
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// premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
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// 64 70 80 90 100 110 120
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// | | | | | | |
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// 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
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// -----------------------------------------------------------------------------
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// 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
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// xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
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// |---115---||---------71---------|
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// s = format start bit, o = odd parity of last 7 bits
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// f = facility code, c = card number
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// w = wiegand parity, x = extra space for other formats
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// p = unknown checksum
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// (26 bit format shown)
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//get bytes for checksum calc
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uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
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uint8_t csBuff[14] = {0x00};
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for (uint8_t i = 0; i < 13; i++){
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csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
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}
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//check checksum calc
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//checksum calc thanks to ICEMAN!!
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uint32_t checkCS = CRC8Maxim(csBuff,13);
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//get raw ID before removing parities
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uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
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uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
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uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
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uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
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setDemodBuf(BitStream,128,idx);
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size = removeParity(BitStream, idx+8, 8, 1, 120);
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if (size != 105){
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if (g_debugMode)
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PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
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return 0;
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}
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// ok valid card found!
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// Index map
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// 0 10 20 30 40 50 60 70
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// | | | | | | | |
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// 01234567890123456789012345678901234567890123456789012345678901234567890
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// -----------------------------------------------------------------------
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// 00000000000000000000000000000000000000000000000000000000000000000000000
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// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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// 71 80 90 100
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// | | | |
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// 1 2 34567890 1234567890123456 7 8901234
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// ---------------------------------------
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// 1 1 01110011 0000000001000110 0 1001010
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// s w ffffffff cccccccccccccccc w ppppppp
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// |--115-| |------71------|
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// s = format start bit, o = odd parity of last 7 bits
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// f = facility code, c = card number
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// w = wiegand parity, x = extra space for other formats
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// p = unknown checksum
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// (26 bit format shown)
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//find start bit to get fmtLen
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int j;
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for (j=0; j<size; j++){
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if(BitStream[j]) break;
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}
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uint8_t fmtLen = size-j-8;
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uint32_t fc = 0;
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uint32_t cardnum = 0;
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uint32_t code1 = 0;
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if (fmtLen==26){
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fc = bytebits_to_byte(BitStream+73, 8);
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cardnum = bytebits_to_byte(BitStream+81, 16);
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code1 = bytebits_to_byte(BitStream+72,fmtLen);
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PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi3, rawHi2, rawHi, rawLo);
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} else if (fmtLen==45){
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fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
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fc = bytebits_to_byte(BitStream+53, 10);
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cardnum = bytebits_to_byte(BitStream+63, 32);
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PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
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} else {
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cardnum = bytebits_to_byte(BitStream+81, 16);
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if (fmtLen>32){
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//code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
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//code2 = bytebits_to_byte(BitStream+(size-32),32);
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PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
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} else{
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//code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
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PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
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}
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}
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if (checksum == checkCS)
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PrintAndLog("Checksum %02x passed", checksum);
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else
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PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
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if (g_debugMode){
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PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
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printDemodBuff();
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}
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return 1;
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}
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int CmdPyramidRead(const char *Cmd) {
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CmdLFRead("s");
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getSamples("30000",false);
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@ -181,10 +319,11 @@ int CmdPyramidSim(const char *Cmd) {
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}
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static command_t CommandTable[] = {
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{"help", CmdHelp, 1, "This help"},
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{"read", CmdPyramidRead, 0, "Attempt to read and extract tag data"},
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{"clone", CmdPyramidClone, 0, "<Facility-Code> <Card Number> clone pyramid tag"},
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{"sim", CmdPyramidSim, 0, "<Facility-Code> <Card Number> simulate pyramid tag"},
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{"help", CmdHelp, 1, "This help"},
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{"demod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from the GraphBuffer"},
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{"read", CmdPyramidRead, 0, "Attempt to read and extract tag data"},
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{"clone", CmdPyramidClone, 0, "<Facility-Code> <Card Number> clone pyramid tag"},
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{"sim", CmdPyramidSim, 0, "<Facility-Code> <Card Number> simulate pyramid tag"},
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{NULL, NULL, 0, NULL}
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};
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