X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/25d3e5cc83570a84605b819d5b1dd53abfa64ce8..6980d66b054071c75dfa522ad36eda97a2556159:/client/cmdlfem4x.c diff --git a/client/cmdlfem4x.c b/client/cmdlfem4x.c index 614624a6..1ecf64d5 100644 --- a/client/cmdlfem4x.c +++ b/client/cmdlfem4x.c @@ -18,8 +18,10 @@ #include "cmdparser.h" #include "cmddata.h" #include "cmdlf.h" +#include "cmdmain.h" #include "cmdlfem4x.h" #include "lfdemod.h" + char *global_em410xId; static int CmdHelp(const char *Cmd); @@ -55,7 +57,7 @@ int CmdEM410xRead(const char *Cmd) return 0; } char id[12] = {0x00}; - sprintf(id, "%010llx",lo); + sprintf(id, "%010"PRIx64,lo); global_em410xId = id; return 1; @@ -70,22 +72,23 @@ int CmdEM410xSim(const char *Cmd) uint8_t uid[5] = {0x00}; if (cmdp == 'h' || cmdp == 'H') { - PrintAndLog("Usage: lf em4x 410xsim "); + PrintAndLog("Usage: lf em4x em410xsim "); PrintAndLog(""); - PrintAndLog(" sample: lf em4x 410xsim 0F0368568B"); + PrintAndLog(" sample: lf em4x em410xsim 0F0368568B"); return 0; } + /* clock is 64 in EM410x tags */ + uint8_t clock = 64; if (param_gethex(Cmd, 0, uid, 10)) { PrintAndLog("UID must include 10 HEX symbols"); return 0; } - - PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X", uid[0],uid[1],uid[2],uid[3],uid[4]); + param_getdec(Cmd,1, &clock); + + PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X clock: %d", uid[0],uid[1],uid[2],uid[3],uid[4],clock); PrintAndLog("Press pm3-button to about simulation"); - /* clock is 64 in EM410x tags */ - int clock = 64; /* clear our graph */ ClearGraph(0); @@ -194,21 +197,13 @@ int CmdEM410xWrite(const char *Cmd) } // Check Clock - if (card == 1) - { - // Default: 64 - if (clock == 0) - clock = 64; - - // Allowed clock rates: 16, 32 and 64 - if ((clock != 16) && (clock != 32) && (clock != 64)) { - PrintAndLog("Error! Clock rate %d not valid. Supported clock rates are 16, 32 and 64.\n", clock); - return 0; - } - } - else if (clock != 0) - { - PrintAndLog("Error! Clock rate is only supported on T55x7 tags.\n"); + // Default: 64 + if (clock == 0) + clock = 64; + + // Allowed clock rates: 16, 32, 40 and 64 + if ((clock != 16) && (clock != 32) && (clock != 64) && (clock != 40)) { + PrintAndLog("Error! Clock rate %d not valid. Supported clock rates are 16, 32, 40 and 64.\n", clock); return 0; } @@ -218,11 +213,11 @@ int CmdEM410xWrite(const char *Cmd) // provide for backwards-compatibility for older firmware, and to avoid // having to add another argument to CMD_EM410X_WRITE_TAG, we just store // the clock rate in bits 8-15 of the card value - card = (card & 0xFF) | (((uint64_t)clock << 8) & 0xFF00); - } - else if (card == 0) + card = (card & 0xFF) | ((clock << 8) & 0xFF00); + } else if (card == 0) { PrintAndLog("Writing %s tag with UID 0x%010" PRIx64, "T5555", id, clock); - else { + card = (card & 0xFF) | ((clock << 8) & 0xFF00); + } else { PrintAndLog("Error! Bad card type selected.\n"); return 0; } @@ -291,7 +286,7 @@ uint32_t OutputEM4x50_Block(uint8_t *BitStream, size_t size, bool verbose, bool } return code; } -/* Read the transmitted data of an EM4x50 tag +/* Read the transmitted data of an EM4x50 tag from the graphbuffer * Format: * * XXXXXXXX [row parity bit (even)] <- 8 bits plus parity @@ -504,116 +499,354 @@ int CmdEM4x50Read(const char *Cmd) return EM4x50Read(Cmd, true); } -int CmdReadWord(const char *Cmd) -{ - int Word = -1; //default to invalid word - UsbCommand c; - - sscanf(Cmd, "%d", &Word); - - if ( (Word > 15) | (Word < 0) ) { - PrintAndLog("Word must be between 0 and 15"); - return 1; +int usage_lf_em_read(void) { + PrintAndLog("Read EM4x05/EM4x69. Tag must be on antenna. "); + PrintAndLog(""); + PrintAndLog("Usage: lf em 4x05readword [h]
"); + PrintAndLog("Options:"); + PrintAndLog(" h - this help"); + PrintAndLog(" address - memory address to read. (0-15)"); + PrintAndLog(" pwd - password (hex) (optional)"); + PrintAndLog("samples:"); + PrintAndLog(" lf em 4x05readword 1"); + PrintAndLog(" lf em 4x05readword 1 11223344"); + return 0; +} + +//search for given preamble in given BitStream and return success=1 or fail=0 and startIndex +bool EMpreambleSearch(uint8_t *BitStream, uint8_t *preamble, size_t pLen, size_t size, size_t *startIdx) { + // Sanity check. If preamble length is bigger than bitstream length. + if ( size <= pLen ) return false; + // em only sends preamble once, so look for it once in the first x bits + uint8_t foundCnt = 0; + for (size_t idx = 0; idx < size - pLen; idx++){ + if (memcmp(BitStream+idx, preamble, pLen) == 0){ + //first index found + foundCnt++; + if (foundCnt == 1) { + if (g_debugMode) PrintAndLog("DEBUG: preamble found at %u", idx); + *startIdx = idx; + + return true; + } + } } - - PrintAndLog("Reading word %d", Word); - - c.cmd = CMD_EM4X_READ_WORD; - c.d.asBytes[0] = 0x0; //Normal mode - c.arg[0] = 0; - c.arg[1] = Word; - c.arg[2] = 0; + return false; +} + +bool EM4x05testDemodReadData(uint32_t *word, bool readCmd) { + // skip first two 0 bits as they might have been missed in the demod + uint8_t preamble[6] = {0,0,1,0,1,0}; + size_t startIdx = 0; + // set size to 15 to only test first 9 positions for the preamble + size_t size = (15 > DemodBufferLen) ? DemodBufferLen : 15; + startIdx = 0; + + //test preamble + bool errChk = EMpreambleSearch(DemodBuffer, preamble, sizeof(preamble), size, &startIdx); + if ( !errChk ) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305 preamble not found :: %d", startIdx); + return false; + } + if (readCmd) { + //test for even parity bits. + size = removeParity(DemodBuffer, startIdx + sizeof(preamble),9,0,44); + if (size == 0) { + if (g_debugMode) PrintAndLog("DEBUG: Error - Parity not detected"); + return false; + } + + //todo test last 8 bits for even parity || (xor) + + setDemodBuf(DemodBuffer, 40, 0); + + *word = bytebits_to_byteLSBF(DemodBuffer , 32); + + uint8_t lo = (uint8_t) bytebits_to_byteLSBF(DemodBuffer , 8); + uint8_t lo2 = (uint8_t) bytebits_to_byteLSBF(DemodBuffer + 8, 8); + uint8_t hi = (uint8_t) bytebits_to_byteLSBF(DemodBuffer + 16, 8); + uint8_t hi2 = (uint8_t) bytebits_to_byteLSBF(DemodBuffer + 24, 8); + uint8_t cs = (uint8_t) bytebits_to_byteLSBF(DemodBuffer + 32, 8); + uint8_t cs2 = lo ^ lo2 ^ hi ^ hi2; + if (g_debugMode) PrintAndLog("EM4x05/4x69 : %08X CS: %02X %s",*word,cs, (cs2==cs) ? "Passed" : "Failed"); + + return (cs2==cs) ? true : false; + } + return true; +} + +// FSK, PSK, ASK/MANCHESTER, ASK/BIPHASE, ASK/DIPHASE +// should cover 90% of known used configs +// the rest will need to be manually demoded for now... +int demodEM4x05resp(uint32_t *word, bool readCmd) { + int ans = 0; + DemodBufferLen = 0x00; + + // test for FSK wave (easiest to 99% ID) + if (GetFskClock("", FALSE, FALSE)) { + //valid fsk clocks found + ans = FSKrawDemod("0 0", false); + if (!ans) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: FSK Demod failed"); + } else { + if (EM4x05testDemodReadData(word, readCmd)) { + return 1; + } + } + } + // PSK clocks should be easy to detect ( but difficult to demod a non-repeating pattern... ) + ans = GetPskClock("", FALSE, FALSE); + if (ans>0) { + //try psk1 + DemodBufferLen = 0x00; + ans = PSKDemod("0 0 6", FALSE); + if (!ans) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: PSK1 Demod failed"); + } else { + if (EM4x05testDemodReadData(word, readCmd)) { + return 1; + } else { + //try psk2 + psk1TOpsk2(DemodBuffer, DemodBufferLen); + if (EM4x05testDemodReadData(word, readCmd)) { + return 1; + } + } + //try psk1 inverted + DemodBufferLen = 0x00; + ans = PSKDemod("0 1 6", FALSE); + if (!ans) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: PSK1 Demod failed"); + } else { + if (EM4x05testDemodReadData(word, readCmd)) { + return 1; + } else { + //try psk2 + psk1TOpsk2(DemodBuffer, DemodBufferLen); + if (EM4x05testDemodReadData(word, readCmd)) { + return 1; + } + } + } + } + } + + // more common than biphase + DemodBufferLen = 0x00; + bool stcheck = false; + // try manchester - NOTE: ST only applies to T55x7 tags. + ans = ASKDemod_ext("0,0,1", false, false, 1, &stcheck); + if (!ans) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: ASK/Manchester Demod failed"); + } else { + if (EM4x05testDemodReadData(word, readCmd)) { + return 1; + } + } + + DemodBufferLen = 0x00; + //try biphase + ans = ASKbiphaseDemod("0 0 1", FALSE); + if (!ans) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: ASK/biphase Demod failed"); + } else { + if (EM4x05testDemodReadData(word, readCmd)) { + return 1; + } + } + + DemodBufferLen = 0x00; + //try diphase (differential biphase or inverted) + ans = ASKbiphaseDemod("0 1 1", FALSE); + if (!ans) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: ASK/biphase Demod failed"); + } else { + if (EM4x05testDemodReadData(word, readCmd)) { + return 1; + } + } + + return -1; +} + +int EM4x05ReadWord(uint8_t addr, uint32_t pwd, bool usePwd) { + UsbCommand c = {CMD_EM4X_READ_WORD, {addr, pwd, usePwd}}; + clearCommandBuffer(); SendCommand(&c); - return 0; + UsbCommand resp; + if (!WaitForResponseTimeout(CMD_ACK, &resp, 2500)){ + PrintAndLog("Command timed out"); + return -1; + } + + uint8_t got[6000]; + GetFromBigBuf(got, sizeof(got), 0); + if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2500) ) { + PrintAndLog("command execution time out"); + return -1; + } + setGraphBuf(got, sizeof(got)); + int testLen = (GraphTraceLen < 1000) ? GraphTraceLen : 1000; + if (graphJustNoise(GraphBuffer, testLen)) { + PrintAndLog("no tag not found"); + return -1; + } + //attempt demod: + uint32_t wordData = 0; + int success = demodEM4x05resp(&wordData, true); + if (success == 1) PrintAndLog("Got Address %02d | %08X",addr,wordData); + return success; } -int CmdReadWordPWD(const char *Cmd) -{ - int Word = -1; //default to invalid word - int Password = 0xFFFFFFFF; //default to blank password - UsbCommand c; - - sscanf(Cmd, "%d %x", &Word, &Password); +int CmdEM4x05ReadWord(const char *Cmd) { + uint8_t addr; + uint32_t pwd; + bool usePwd = false; + uint8_t ctmp = param_getchar(Cmd, 0); + if ( strlen(Cmd) == 0 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_em_read(); + + addr = param_get8ex(Cmd, 0, 50, 10); + // for now use default input of 1 as invalid (unlikely 1 will be a valid password...) + pwd = param_get32ex(Cmd, 1, 1, 16); - if ( (Word > 15) | (Word < 0) ) { - PrintAndLog("Word must be between 0 and 15"); + if ( (addr > 15) ) { + PrintAndLog("Address must be between 0 and 15"); return 1; } - - PrintAndLog("Reading word %d with password %08X", Word, Password); - - c.cmd = CMD_EM4X_READ_WORD; - c.d.asBytes[0] = 0x1; //Password mode - c.arg[0] = 0; - c.arg[1] = Word; - c.arg[2] = Password; - SendCommand(&c); + if ( pwd == 1 ) + PrintAndLog("Reading address %02u", addr); + else { + usePwd = true; + PrintAndLog("Reading address %02u | password %08X", addr, pwd); + } + return EM4x05ReadWord(addr, pwd, usePwd); +} + +int usage_lf_em_dump(void) { + PrintAndLog("Dump EM4x05/EM4x69. Tag must be on antenna. "); + PrintAndLog(""); + PrintAndLog("Usage: lf em 4x05dump [h] "); + PrintAndLog("Options:"); + PrintAndLog(" h - this help"); + PrintAndLog(" pwd - password (hex) (optional)"); + PrintAndLog("samples:"); + PrintAndLog(" lf em 4x05dump"); + PrintAndLog(" lf em 4x05dump 11223344"); return 0; } -int CmdWriteWord(const char *Cmd) -{ - int Word = 16; //default to invalid block - int Data = 0xFFFFFFFF; //default to blank data - UsbCommand c; - - sscanf(Cmd, "%x %d", &Data, &Word); +int CmdEM4x05dump(const char *Cmd) { + uint8_t addr = 0; + uint32_t pwd; + bool usePwd = false; + uint8_t ctmp = param_getchar(Cmd, 0); + if ( ctmp == 'H' || ctmp == 'h' ) return usage_lf_em_dump(); + + // for now use default input of 1 as invalid (unlikely 1 will be a valid password...) + pwd = param_get32ex(Cmd, 0, 1, 16); - if (Word > 15) { - PrintAndLog("Word must be between 0 and 15"); - return 1; + if ( pwd != 1 ) { + usePwd = true; } - - PrintAndLog("Writing word %d with data %08X", Word, Data); - - c.cmd = CMD_EM4X_WRITE_WORD; - c.d.asBytes[0] = 0x0; //Normal mode - c.arg[0] = Data; - c.arg[1] = Word; - c.arg[2] = 0; - SendCommand(&c); + int success = 1; + for (; addr < 16; addr++) { + if (addr == 2) { + if (usePwd) { + PrintAndLog("PWD Address %02u | %08X",addr,pwd); + } else { + PrintAndLog("PWD Address 02 | cannot read"); + } + } else { + success &= EM4x05ReadWord(addr, pwd, usePwd); + } + } + + return success; +} + + +int usage_lf_em_write(void) { + PrintAndLog("Write EM4x05/EM4x69. Tag must be on antenna. "); + PrintAndLog(""); + PrintAndLog("Usage: lf em 4x05writeword [h]
"); + PrintAndLog("Options:"); + PrintAndLog(" h - this help"); + PrintAndLog(" address - memory address to write to. (0-15)"); + PrintAndLog(" data - data to write (hex)"); + PrintAndLog(" pwd - password (hex) (optional)"); + PrintAndLog("samples:"); + PrintAndLog(" lf em 4x05writeword 1"); + PrintAndLog(" lf em 4x05writeword 1 deadc0de 11223344"); return 0; } -int CmdWriteWordPWD(const char *Cmd) -{ - int Word = 16; //default to invalid word - int Data = 0xFFFFFFFF; //default to blank data - int Password = 0xFFFFFFFF; //default to blank password - UsbCommand c; +int CmdEM4x05WriteWord(const char *Cmd) { + uint8_t ctmp = param_getchar(Cmd, 0); + if ( strlen(Cmd) == 0 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_em_write(); + + bool usePwd = false; + + uint8_t addr = 16; // default to invalid address + uint32_t data = 0xFFFFFFFF; // default to blank data + uint32_t pwd = 0xFFFFFFFF; // default to blank password + + addr = param_get8ex(Cmd, 0, 16, 10); + data = param_get32ex(Cmd, 1, 0, 16); + pwd = param_get32ex(Cmd, 2, 1, 16); - sscanf(Cmd, "%x %d %x", &Data, &Word, &Password); - if (Word > 15) { - PrintAndLog("Word must be between 0 and 15"); + if ( (addr > 15) ) { + PrintAndLog("Address must be between 0 and 15"); return 1; } + if ( pwd == 1 ) + PrintAndLog("Writing address %d data %08X", addr, data); + else { + usePwd = true; + PrintAndLog("Writing address %d data %08X using password %08X", addr, data, pwd); + } - PrintAndLog("Writing word %d with data %08X and password %08X", Word, Data, Password); + uint16_t flag = (addr << 8 ) | usePwd; - c.cmd = CMD_EM4X_WRITE_WORD; - c.d.asBytes[0] = 0x1; //Password mode - c.arg[0] = Data; - c.arg[1] = Word; - c.arg[2] = Password; + UsbCommand c = {CMD_EM4X_WRITE_WORD, {flag, data, pwd}}; + clearCommandBuffer(); SendCommand(&c); - return 0; + UsbCommand resp; + if (!WaitForResponseTimeout(CMD_ACK, &resp, 2000)){ + PrintAndLog("Error occurred, device did not respond during write operation."); + return -1; + } + //get response if there is one + uint8_t got[6000]; // 8 bit preamble + 32 bit word response (max clock (128) * 40bits = 5120 samples) + GetFromBigBuf(got, sizeof(got), 0); + if ( !WaitForResponseTimeout(CMD_ACK, NULL, 4000) ) { + PrintAndLog("command execution time out"); + return 0; + } + setGraphBuf(got, sizeof(got)); + //check response for 00001010 for write confirmation! + //attempt demod: + uint32_t dummy = 0; + int result = demodEM4x05resp(&dummy,false); + if (result == 1) { + PrintAndLog("Write Verified"); + } + return result; } static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, - {"em410xdemod", CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"}, - {"em410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag"}, - {"em410xsim", CmdEM410xSim, 0, " -- Simulate EM410x tag"}, - {"em410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"}, - {"em410xspoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" }, - {"em410xwrite", CmdEM410xWrite, 1, " <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"}, - {"em4x50read", CmdEM4x50Read, 1, "Extract data from EM4x50 tag"}, - {"readword", CmdReadWord, 1, " -- Read EM4xxx word data"}, - {"readwordPWD", CmdReadWordPWD, 1, " -- Read EM4xxx word data in password mode"}, - {"writeword", CmdWriteWord, 1, " -- Write EM4xxx word data"}, - {"writewordPWD", CmdWriteWordPWD, 1, " -- Write EM4xxx word data in password mode"}, + {"410xdemod", CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"}, + {"410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag in GraphBuffer"}, + {"410xsim", CmdEM410xSim, 0, " [clock rate] -- Simulate EM410x tag"}, + {"410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"}, + {"410xspoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" }, + {"410xwrite", CmdEM410xWrite, 0, " <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"}, + {"4x05dump", CmdEM4x05dump, 1, "(pwd) -- Read EM4x05/EM4x69 all word data"}, + {"4x05readword", CmdEM4x05ReadWord, 1, " (pwd) -- Read EM4x05/EM4x69 word data"}, + {"4x05writeword", CmdEM4x05WriteWord, 1, " (pwd) -- Write EM4x05/EM4x69 word data"}, + {"4x50read", CmdEM4x50Read, 1, "demod data from EM4x50 tag from the graph buffer"}, {NULL, NULL, 0, NULL} };