//----------------------------------------------------------------------------- // // 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 ioProx commands // FSK2a, rf/64, 64 bits (complete) //----------------------------------------------------------------------------- #include #include #include #include #include #include "cmdlfio.h" #include "proxmark3.h" #include "data.h" #include "graph.h" #include "ui.h" #include "cmdparser.h" #include "cmdmain.h" #include "cmddata.h" #include "cmdlf.h" #include "lfdemod.h" //for IOdemodFSK + bytebits_to_byte #include "util.h" //for sprint_bin_break static int CmdHelp(const char *Cmd); int CmdIOReadFSK(const char *Cmd) { int findone=0; if(Cmd[0]=='1') findone=1; UsbCommand c={CMD_IO_DEMOD_FSK}; c.arg[0]=findone; SendCommand(&c); return 0; } //by marshmellow //IO-Prox demod - FSK RF/64 with preamble of 000000001 //print ioprox ID and some format details int CmdFSKdemodIO(const char *Cmd) { int idx=0; //something in graphbuffer? if (GraphTraceLen < 65) { if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer"); return 0; } uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; size_t BitLen = getFromGraphBuf(BitStream); if (BitLen==0) return 0; //get binary from fsk wave idx = IOdemodFSK(BitStream,BitLen); if (idx<0){ if (g_debugMode){ if (idx==-1){ PrintAndLog("DEBUG: Just Noise Detected"); } else if (idx == -2) { PrintAndLog("DEBUG: not enough samples"); } else if (idx == -3) { PrintAndLog("DEBUG: error during fskdemod"); } else if (idx == -4) { PrintAndLog("DEBUG: Preamble not found"); } else if (idx == -5) { PrintAndLog("DEBUG: Separator bits not found"); } else { PrintAndLog("DEBUG: Error demoding fsk %d", idx); } } return 0; } if (idx==0){ if (g_debugMode){ PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen); if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16)); } return 0; } //Index map //0 10 20 30 40 50 60 //| | | | | | | //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23 //----------------------------------------------------------------------------- //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11 // //XSF(version)facility:codeone+codetwo (raw) //Handle the data if (idx+64>BitLen) { if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen); return 0; } PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx], BitStream[idx+1], BitStream[idx+2], BitStream[idx+3], BitStream[idx+4], BitStream[idx+5], BitStream[idx+6], BitStream[idx+7], BitStream[idx+8]); PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+9], BitStream[idx+10], BitStream[idx+11],BitStream[idx+12],BitStream[idx+13],BitStream[idx+14],BitStream[idx+15],BitStream[idx+16],BitStream[idx+17]); PrintAndLog("%d%d%d%d%d%d%d%d %d facility",BitStream[idx+18], BitStream[idx+19], BitStream[idx+20],BitStream[idx+21],BitStream[idx+22],BitStream[idx+23],BitStream[idx+24],BitStream[idx+25],BitStream[idx+26]); PrintAndLog("%d%d%d%d%d%d%d%d %d version",BitStream[idx+27], BitStream[idx+28], BitStream[idx+29],BitStream[idx+30],BitStream[idx+31],BitStream[idx+32],BitStream[idx+33],BitStream[idx+34],BitStream[idx+35]); PrintAndLog("%d%d%d%d%d%d%d%d %d code1",BitStream[idx+36], BitStream[idx+37], BitStream[idx+38],BitStream[idx+39],BitStream[idx+40],BitStream[idx+41],BitStream[idx+42],BitStream[idx+43],BitStream[idx+44]); PrintAndLog("%d%d%d%d%d%d%d%d %d code2",BitStream[idx+45], BitStream[idx+46], BitStream[idx+47],BitStream[idx+48],BitStream[idx+49],BitStream[idx+50],BitStream[idx+51],BitStream[idx+52],BitStream[idx+53]); PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum",BitStream[idx+54],BitStream[idx+55],BitStream[idx+56],BitStream[idx+57],BitStream[idx+58],BitStream[idx+59],BitStream[idx+60],BitStream[idx+61],BitStream[idx+62],BitStream[idx+63]); uint32_t code = bytebits_to_byte(BitStream+idx,32); uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32); uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ; uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8); uint16_t calccrc = 0; for (uint8_t i=1; i<6; ++i){ calccrc += bytebits_to_byte(BitStream+idx+9*i,8); } calccrc &= 0xff; calccrc = 0xff - calccrc; char *crcStr = (crc == calccrc) ? "crc ok": "!crc"; PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr); setDemodBuf(BitStream,64,idx); if (g_debugMode){ PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64); printDemodBuff(); } return 1; } int CmdIOClone(const char *Cmd) { unsigned int hi = 0, lo = 0; int n = 0, i = 0; UsbCommand c; //if (1 == sscanf(str, "0x%"SCNx32, &hi)) { // value now contains the value in the string--decimal 255, in this case. //} while (sscanf(&Cmd[i++], "%1x", &n ) == 1) { hi = (hi << 4) | (lo >> 28); lo = (lo << 4) | (n & 0xf); } PrintAndLog("Cloning tag with ID %08x %08x", hi, lo); PrintAndLog("Press pm3-button to abort simulation"); c.cmd = CMD_IO_CLONE_TAG; c.arg[0] = hi; c.arg[1] = lo; SendCommand(&c); return 0; } static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, {"demod", CmdFSKdemodIO, 1, "Demodulate IO Prox tag from the GraphBuffer"}, {"read", CmdIOReadFSK, 0, "['1'] Realtime IO FSK demodulate from antenna (option '1' for one tag only)"}, {"clone", CmdIOClone, 0, "Clone ioProx Tag"}, {NULL, NULL, 0, NULL} }; int CmdLFIO(const char *Cmd) { CmdsParse(CommandTable, Cmd); return 0; } int CmdHelp(const char *Cmd) { CmdsHelp(CommandTable); return 0; }