X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/6ac4cb270a202d6f723b82753d57ee48c9a6980e..2d99d9912c430b09c8178c9154a44a99e7ee6561:/client/cmdlfem4x.c diff --git a/client/cmdlfem4x.c b/client/cmdlfem4x.c index eddeec56..2d1600f6 100644 --- a/client/cmdlfem4x.c +++ b/client/cmdlfem4x.c @@ -18,11 +18,10 @@ #include "cmdparser.h" #include "cmddata.h" #include "cmdlf.h" +#include "cmdmain.h" #include "cmdlfem4x.h" #include "lfdemod.h" -#define llx PRIx64 - char *global_em410xId; static int CmdHelp(const char *Cmd); @@ -58,7 +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; @@ -73,22 +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); @@ -197,21 +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; } @@ -221,11 +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; } @@ -294,7 +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 @@ -507,53 +499,284 @@ 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"); +int usage_lf_em_read(void) { + PrintAndLog("Read EM4x05/EM4x69. Tag must be on antenna. "); + PrintAndLog(""); + PrintAndLog("Usage: lf em readword [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 readword 1"); + PrintAndLog(" lf em readword 1 11223344"); + return 0; +} + +//search for given preamble in given BitStream and return success=1 or fail=0 and startIndex +uint8_t 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 0; + // 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 1; + } + } + } + return 0; +} + +// 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(uint8_t bitsNeeded) { + int ans = 0; + bool demodFound = false; + DemodBufferLen = 0x00; + // 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; + + // 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 { + // set size to 10 to only test first 4 positions for the preamble + size_t size = (10 > DemodBufferLen) ? DemodBufferLen : 10; + startIdx = 0; + + if (g_debugMode) PrintAndLog("ANS: %d | %u | %u", ans, startIdx, size); + + uint8_t errChk = EMpreambleSearch(DemodBuffer, preamble, sizeof(preamble), size, &startIdx); + if ( errChk == 0) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305 preamble not found :: %d", startIdx); + } else { + //can't test size because the preamble doesn't repeat :( + //meaning chances of false positives are high. + demodFound = true; + } + } + } + // PSK clocks should be easy to detect ( but difficult to demod a non-repeating pattern... ) + if (!demodFound) { + ans = GetPskClock("", FALSE, FALSE); + if (ans>0) { + PrintAndLog("PSK response possibly found, run `data rawd p1` to attempt to demod"); + } + } + + // more common than biphase + if (!demodFound) { + 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 { + // set size to 10 to only test first 4 positions for the preamble + size_t size = (10 > DemodBufferLen) ? DemodBufferLen : 10; + startIdx = 0; + + if (g_debugMode) PrintAndLog("ANS: %d | %u | %u", ans, startIdx, size); + + uint8_t errChk = EMpreambleSearch(DemodBuffer, preamble, sizeof(preamble), size, &startIdx); + if ( errChk == 0) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305 preamble not found :: %d", startIdx); + } else { + //can't test size because the preamble doesn't repeat :( + //meaning chances of false positives are high. + demodFound = true; + } + } + } + + if (!demodFound) { + DemodBufferLen = 0x00; + //try biphase + ans = ASKbiphaseDemod("0 0 1", FALSE); + if (!ans) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: ASK/biphase Demod failed"); + } else { + // set size to 10 to only test first 4 positions for the preamble + size_t size = (10 > DemodBufferLen) ? DemodBufferLen : 10; + startIdx = 0; + + if (g_debugMode) PrintAndLog("ANS: %d | %u | %u", ans, startIdx, size); + + uint8_t errChk = EMpreambleSearch(DemodBuffer, preamble, sizeof(preamble), size, &startIdx); + if ( errChk == 0) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305 preamble not found :: %d", startIdx); + } else { + //can't test size because the preamble doesn't repeat :( + //meaning chances of false positives are high. + demodFound = true; + } + } + } + + if (!demodFound) { + 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 { + // set size to 10 to only test first 4 positions for the preamble + size_t size = (10 > DemodBufferLen) ? DemodBufferLen : 10; + startIdx = 0; + + if (g_debugMode) PrintAndLog("ANS: %d | %u | %u", ans, startIdx, size); + + uint8_t errChk = EMpreambleSearch(DemodBuffer, preamble, sizeof(preamble), size, &startIdx); + if ( errChk == 0) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305 preamble not found :: %d", startIdx); + } else { + //can't test size because the preamble doesn't repeat :( + //meaning chances of false positives are high. + demodFound = true; + } + } + } + + if (demodFound && bitsNeeded < DemodBufferLen) { + if (bitsNeeded > 0) { + setDemodBuf(DemodBuffer + startIdx + sizeof(preamble), bitsNeeded, 0); + CmdPrintDemodBuff("x"); + } return 1; } + return -1; +} + +int CmdReadWord(const char *Cmd) { + int addr, 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, -1, 10); + pwd = param_get32ex(Cmd, 1, -1, 16); - PrintAndLog("Reading word %d", Word); + if ( (addr > 15) || (addr < 0 ) || ( addr == -1) ) { + PrintAndLog("Address must be between 0 and 15"); + return 1; + } + if ( pwd == -1 ) + PrintAndLog("Reading address %d", addr); + else { + usePwd = true; + PrintAndLog("Reading address %d | password %08X", addr, pwd); + } - 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; + UsbCommand c = {CMD_EM4X_READ_WORD, {addr, pwd, usePwd}}; + clearCommandBuffer(); SendCommand(&c); + 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: + //need 32 bits from a read word + return demodEM4x05resp(44); +} + +int usage_lf_em_write(void) { + PrintAndLog("Write EM4x05/EM4x69. Tag must be on antenna. "); + PrintAndLog(""); + PrintAndLog("Usage: lf em writeword [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 writeword 1"); + PrintAndLog(" lf em writeword 1 deadc0de 11223344"); return 0; } -int CmdReadWordPWD(const char *Cmd) -{ - int Word = -1; //default to invalid word - int Password = 0xFFFFFFFF; //default to blank password - UsbCommand c; +int CmdWriteWord(const char *Cmd) { + uint8_t ctmp = param_getchar(Cmd, 0); + if ( strlen(Cmd) == 0 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_em_write(); - sscanf(Cmd, "%d %x", &Word, &Password); + bool usePwd = false; + + int addr = 16; // default to invalid address + int data = 0xFFFFFFFF; // default to blank data + int pwd = 0xFFFFFFFF; // default to blank password - if ( (Word > 15) | (Word < 0) ) { - PrintAndLog("Word must be between 0 and 15"); + addr = param_get8ex(Cmd, 0, -1, 10); + data = param_get32ex(Cmd, 1, -1, 16); + pwd = param_get32ex(Cmd, 2, -1, 16); + + + if ( (addr > 15) || (addr < 0 ) || ( addr == -1) ) { + 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("Reading word %d with password %08X", Word, Password); + uint16_t flag = (addr << 8 ) | usePwd; - 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; + UsbCommand c = {CMD_EM4X_WRITE_WORD, {flag, data, pwd}}; + clearCommandBuffer(); SendCommand(&c); - return 0; + UsbCommand resp; + if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){ + 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, 8000) ) { + PrintAndLog("command execution time out"); + return 0; + } + setGraphBuf(got, sizeof(got)); + //todo: check response for 00001010 then write data for write confirmation! + + //attempt demod: + //need 0 bits demoded (after preamble) to verify write cmd + int result = demodEM4x05resp(0); + if (result == 1) { + PrintAndLog("Write Verified"); + } + return result; } +/* int CmdWriteWord(const char *Cmd) { int Word = 16; //default to invalid block @@ -602,21 +825,21 @@ int CmdWriteWordPWD(const char *Cmd) SendCommand(&c); return 0; } - +*/ 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 in GraphBuffer"}, - {"em410xsim", CmdEM410xSim, 0, " -- Simulate EM410x tag"}, + {"em410xsim", CmdEM410xSim, 0, " [clock rate] -- 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, 0, " <'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"}, + {"em4x50read", CmdEM4x50Read, 1, "demod data from EM4x50 tag from the graph buffer"}, + {"readword", CmdReadWord, 1, " (pwd) -- Read EM4x05/EM4x69 word data"}, + //{"readwordPWD", CmdReadWordPWD, 1, " -- Read EM4xxx word data in password mode"}, + {"writeword", CmdWriteWord, 1, " (pwd) -- Write EM4x05/EM4x69 word data"}, + //{"writewordPWD", CmdWriteWordPWD, 1, " -- Write EM4xxx word data in password mode"}, {NULL, NULL, 0, NULL} };