X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/0d2c590974319db6fc54400ce153d86b68a09852..1b6cc9746e25e93b9c8d76e193af4796c942b167:/client/cmdlfguard.c?ds=sidebyside diff --git a/client/cmdlfguard.c b/client/cmdlfguard.c index 828bdb68..66cc396b 100644 --- a/client/cmdlfguard.c +++ b/client/cmdlfguard.c @@ -6,8 +6,7 @@ //----------------------------------------------------------------------------- // Low frequency Farpoint / Pyramid tag commands //----------------------------------------------------------------------------- -#include -#include + #include "cmdlfguard.h" static int CmdHelp(const char *Cmd); @@ -16,12 +15,13 @@ int usage_lf_guard_clone(void){ PrintAndLog("The facility-code is 8-bit and the card number is 16-bit. Larger values are truncated. "); PrintAndLog("Currently work only on 26bit"); PrintAndLog(""); - PrintAndLog("Usage: lf guard clone "); + PrintAndLog("Usage: lf guard clone "); PrintAndLog("Options :"); + PrintAndLog(" : format length 26|32|36|40"); PrintAndLog(" : 8-bit value facility code"); PrintAndLog(" : 16-bit value card number"); PrintAndLog(""); - PrintAndLog("Sample : lf guard clone 123 11223"); + PrintAndLog("Sample : lf guard clone 26 123 11223"); return 0; } @@ -31,57 +31,72 @@ int usage_lf_guard_sim(void) { PrintAndLog("The facility-code is 8-bit and the card number is 16-bit. Larger values are truncated."); PrintAndLog("Currently work only on 26bit"); PrintAndLog(""); - PrintAndLog("Usage: lf guard sim "); + PrintAndLog("Usage: lf guard sim "); PrintAndLog("Options :"); + PrintAndLog(" : format length 26|32|36|40"); PrintAndLog(" : 8-bit value facility code"); PrintAndLog(" : 16-bit value card number"); PrintAndLog(""); - PrintAndLog("Sample : lf guard sim 123 11223"); + PrintAndLog("Sample : lf guard sim 26 123 11223"); return 0; } - // Works for 26bits. -int GetGuardBits(uint32_t fc, uint32_t cn, uint8_t *guardBits) { +int GetGuardBits(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint8_t *guardBits) { - // Intializes random number generator - time_t t; - srand((unsigned) time(&t)); - //uint8_t xorKey = rand() % 0xFF; - uint8_t xorKey = 0x6b; + uint8_t xorKey = 0x66; uint8_t i; - - uint8_t pre[96]; + uint8_t rawbytes[12]; memset(pre, 0x00, sizeof(pre)); + memset(rawbytes, 0x00, sizeof(rawbytes)); - // Get 26 wiegand from FacilityCode, CardNumber - uint8_t wiegand[24]; - memset(wiegand, 0x00, sizeof(wiegand)); - num_to_bytebits(fc, 8, wiegand); - num_to_bytebits(cn, 16, wiegand+8); - - // add wiegand parity bits (dest, source, len) - wiegand_add_parity(pre, wiegand, 24); - - // lets start. 12bytes of data to be produced. - uint8_t rawbytes[12]; - memset(rawbytes, 0x00, sizeof(rawbytes)); + // add format length (decimal) + switch (fmtlen) { + case 32: { + rawbytes[1] = (32 << 2); + + break; + } + case 36: { + // FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1); + // Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5); + rawbytes[1] = (36 << 2); + // Get 26 wiegand from FacilityCode, CardNumber + uint8_t wiegand[34]; + memset(wiegand, 0x00, sizeof(wiegand)); + num_to_bytebits(fc, 8, wiegand); + num_to_bytebits(cn, 26, wiegand+8); + + // add wiegand parity bits (dest, source, len) + wiegand_add_parity(pre, wiegand, 34); + break; + } + case 40: { + rawbytes[1] = (40 << 2); + break; + } + case 26: + default: { + rawbytes[1] = (26 << 2); + // Get 26 wiegand from FacilityCode, CardNumber + uint8_t wiegand[24]; + memset(wiegand, 0x00, sizeof(wiegand)); + num_to_bytebits(fc, 8, wiegand); + num_to_bytebits(cn, 16, wiegand+8); + + // add wiegand parity bits (dest, source, len) + wiegand_add_parity(pre, wiegand, 24); + break; + } + } + // 2bit checksum, unknown today, + // these two bits are the last ones of rawbyte[1], hence the LSHIFT above. + // xor key rawbytes[0] = xorKey; - - // add format length (decimal) - // len | hex | bin - // 26 | 1A | 0001 1010 - rawbytes[1] = (26 << 2); - // 36 | 24 | 0010 0100 - //rawbytes[1] = (36 << 2); - // 40 | 28 | 0010 1000 - //rawbytes[1] = (40 << 2); - // 2bit checksum, unknown today, - // these two bits are the last ones of rawbyte[1], hence the LSHIFT above. rawbytes[2] = 1; rawbytes[3] = 0; @@ -91,11 +106,6 @@ int GetGuardBits(uint32_t fc, uint32_t cn, uint8_t *guardBits) { if (g_debugMode) printf(" WIE | %s\n", sprint_hex(rawbytes, sizeof(rawbytes))); - // NIBBLE_SWAP (works on all data) - // for (i = 0; i < 12; ++i) - // rawbytes[i] = SWAP_NIBBLE( rawbytes[i] ); - - // printf("SWAP | %s\n", sprint_hex(rawbytes, sizeof(rawbytes))); // XOR (only works on wiegand stuff) for (i = 1; i < 12; ++i) @@ -111,7 +121,7 @@ int GetGuardBits(uint32_t fc, uint32_t cn, uint8_t *guardBits) { if (g_debugMode) printf(" Raw | %s\n", sprint_bin(pre, 64) ); // add spacer bit 0 every 4 bits, starting with index 0, - // 12 bytes, 24 nibbles. 24+1 extra bites. 3bytes. Ie 9bytes | 1byte xorkey, 8bytes rawdata (64bits, should be enough for a 40bit wiegand) + // 12 bytes, 24 nibbles. 24+1 extra bites. 3bytes. ie 9bytes | 1byte xorkey, 8bytes rawdata (64bits, should be enough for a 40bit wiegand) addParity(pre, guardBits+6, 64, 5, 3); // preamble @@ -121,10 +131,6 @@ int GetGuardBits(uint32_t fc, uint32_t cn, uint8_t *guardBits) { guardBits[3] = 1; guardBits[4] = 1; guardBits[5] = 0; -/* 6 B -PRE | 0110 1101 0101 1110 0001 1101 1101 0111 1101011011010110110101101101011 -FIN | 111110 0 0110 0 1101 0 0101 0 1110 0 0001 0 1101 0 1101 0 0111 0 110100110011010011001101001100110100110000000000 -*/ if (g_debugMode) printf(" FIN | %s\n", sprint_bin(guardBits, 96) ); return 1; @@ -132,7 +138,7 @@ FIN | 111110 0 0110 0 1101 0 0101 0 1110 0 0001 0 1101 0 1101 0 0111 0 110100110 int CmdGuardRead(const char *Cmd) { CmdLFRead("s"); - getSamples("30000",false); + getSamples("12000", TRUE); return CmdG_Prox_II_Demod(""); } @@ -141,23 +147,25 @@ int CmdGuardClone(const char *Cmd) { char cmdp = param_getchar(Cmd, 0); if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_guard_clone(); - uint32_t facilitycode=0, cardnumber=0, fc = 0, cn = 0; + uint32_t facilitycode = 0, cardnumber = 0, fc = 0, cn = 0, fmtlen = 0; uint8_t i; uint8_t bs[96]; memset(bs, 0x00, sizeof(bs)); //GuardProxII - compat mode, ASK/Biphase, data rate 64, 3 data blocks - uint32_t blocks[5] = {T55x7_MODULATION_BIPHASE | T55x7_BITRATE_RF_64 | 3<>1) << T5555_BITRATE_SHIFT | 3 << T5555_MAXBLOCK_SHIFT; - if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_guard_clone(); + if (sscanf(Cmd, "%u %u %u", &fmtlen, &fc, &cn ) != 3) return usage_lf_guard_clone(); + fmtlen &= 0x7f; facilitycode = (fc & 0x000000FF); cardnumber = (cn & 0x0000FFFF); - if ( !GetGuardBits(facilitycode, cardnumber, bs)) { + if ( !GetGuardBits(fmtlen, facilitycode, cardnumber, bs)) { PrintAndLog("Error with tag bitstream generation."); return 1; } @@ -170,7 +178,7 @@ int CmdGuardClone(const char *Cmd) { PrintAndLog("Blk | Data "); PrintAndLog("----+------------"); for ( i = 0; i<4; ++i ) - PrintAndLog(" %02d | %08x", i, blocks[i]); + PrintAndLog(" %02d | 0x%08x", i, blocks[i]); UsbCommand resp; UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}}; @@ -180,7 +188,7 @@ int CmdGuardClone(const char *Cmd) { c.arg[1] = i; clearCommandBuffer(); SendCommand(&c); - if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){ + if (!WaitForResponseTimeout(CMD_ACK, &resp, T55XX_WRITE_TIMEOUT)){ PrintAndLog("Error occurred, device did not respond during write operation."); return -1; } @@ -193,31 +201,38 @@ int CmdGuardSim(const char *Cmd) { char cmdp = param_getchar(Cmd, 0); if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_guard_sim(); - uint32_t facilitycode = 0, cardnumber = 0, fc = 0, cn = 0; + uint32_t facilitycode = 0, cardnumber = 0, fc = 0, cn = 0, fmtlen = 0; + uint8_t clock = 64, encoding = 2, separator = 0, invert = 0; uint8_t bs[96]; - size_t size = sizeof(bs); - memset(bs, 0x00, size); + memset(bs, 0x00, sizeof(bs)); - // Pyramid uses: ASK Biphase, clk: 32, invert: 0 - uint64_t arg1, arg2; - arg1 = (10 << 8) + 8; - arg2 = 32 | 0; - - if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_guard_sim(); + if (sscanf(Cmd, "%u %u %u", &fmtlen, &fc, &cn ) != 3) return usage_lf_guard_sim(); + fmtlen &= 0x7F; facilitycode = (fc & 0x000000FF); cardnumber = (cn & 0x0000FFFF); - if ( !GetGuardBits(facilitycode, cardnumber, bs)) { + if ( !GetGuardBits(fmtlen, facilitycode, cardnumber, bs)) { PrintAndLog("Error with tag bitstream generation."); return 1; } PrintAndLog("Simulating Guardall - Facility Code: %u, CardNumber: %u", facilitycode, cardnumber ); - + + // Guard uses: clk: 64, invert: 0, encoding: 2 (ASK Biphase) + uint64_t arg1, arg2; + arg1 = (clock << 8) | encoding; + arg2 = (invert << 8) | separator; + + uint8_t rawbytes[12]; + size_t size = sizeof(rawbytes); + for (uint8_t i=0; i < size; ++i){ + rawbytes[i] = bytebits_to_byte( bs + (i*8), 8); + } + UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}}; - memcpy(c.d.asBytes, bs, size); + memcpy(c.d.asBytes, rawbytes, size ); clearCommandBuffer(); SendCommand(&c); return 0; @@ -227,7 +242,7 @@ static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, {"read", CmdGuardRead, 0, "Attempt to read and extract tag data"}, {"clone", CmdGuardClone, 0, " clone Guardall tag"}, -// {"sim", CmdGuardSim, 0, " simulate Guardall tag"}, + {"sim", CmdGuardSim, 0, " simulate Guardall tag"}, {NULL, NULL, 0, NULL} };