X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/e39a92bb1d876f880ad8cbea82921838422358e8..refs/pull/216/head:/client/cmdlfem4x.c?ds=inline diff --git a/client/cmdlfem4x.c b/client/cmdlfem4x.c index 16faa848..0788b138 100644 --- a/client/cmdlfem4x.c +++ b/client/cmdlfem4x.c @@ -72,9 +72,9 @@ int CmdEM410xSim(const char *Cmd) uint8_t uid[5] = {0x00}; if (cmdp == 'h' || cmdp == 'H') { - PrintAndLog("Usage: lf em4x em410xsim "); + PrintAndLog("Usage: lf em 410xsim "); PrintAndLog(""); - PrintAndLog(" sample: lf em4x em410xsim 0F0368568B"); + PrintAndLog(" sample: lf em 410xsim 0F0368568B"); return 0; } /* clock is 64 in EM410x tags */ @@ -228,6 +228,7 @@ int CmdEM410xWrite(const char *Cmd) return 0; } +//**************** Start of EM4x50 Code ************************ bool EM_EndParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType) { if (rows*cols>size) return false; @@ -499,6 +500,7 @@ int CmdEM4x50Read(const char *Cmd) return EM4x50Read(Cmd, true); } +//**************** Start of EM4x05/EM4x69 Code ************************ int usage_lf_em_read(void) { PrintAndLog("Read EM4x05/EM4x69. Tag must be on antenna. "); PrintAndLog(""); @@ -513,64 +515,49 @@ int usage_lf_em_read(void) { 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; - } - } +// for command responses from em4x05 or em4x69 +// download samples from device and copy them to the Graphbuffer +bool downloadSamplesEM() { + // 8 bit preamble + 32 bit word response (max clock (128) * 40bits = 5120 samples) + uint8_t got[6000]; + GetFromBigBuf(got, sizeof(got), 0); + if ( !WaitForResponseTimeout(CMD_ACK, NULL, 4000) ) { + PrintAndLog("command execution time out"); + return false; } - return false; + setGraphBuf(got, sizeof(got)); + return true; } 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}; + // em4x05/em4x69 command response preamble is 00001010 + // skip first two 0 bits as they might have been missed in the demod + uint8_t preamble[] = {0,0,1,0,1,0}; size_t startIdx = 0; - // set size to 10 to only test first 4 positions for the preamble - size_t size = (10 > DemodBufferLen) ? DemodBufferLen : 10; - startIdx = 0; - //test preamble - bool errChk = EMpreambleSearch(DemodBuffer, preamble, sizeof(preamble), size, &startIdx); - if ( !errChk ) { + // set size to 20 to only test first 14 positions for the preamble or less if not a read command + size_t size = (readCmd) ? 20 : 11; + // sanity check + size = (size > DemodBufferLen) ? DemodBufferLen : size; + // test preamble + if ( !onePreambleSearch(DemodBuffer, preamble, sizeof(preamble), size, &startIdx) ) { if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305 preamble not found :: %d", startIdx); return false; } + // if this is a readword command, get the read bytes and test the parities if (readCmd) { - //test for even parity bits. - size = removeParity(DemodBuffer, startIdx + sizeof(preamble),9,0,44); - if (size == 0) { + if (!EM_EndParityTest(DemodBuffer + startIdx + sizeof(preamble), 45, 5, 9, 0)) { + if (g_debugMode) PrintAndLog("DEBUG: Error - End Parity check failed"); + return false; + } + // test for even parity bits. + if ( removeParity(DemodBuffer, startIdx + sizeof(preamble),9,0,44) == 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; + *word = bytebits_to_byteLSBF(DemodBuffer, 32); } return true; } @@ -580,15 +567,13 @@ bool EM4x05testDemodReadData(uint32_t *word, bool readCmd) { // the rest will need to be manually demoded for now... int demodEM4x05resp(uint32_t *word, bool readCmd) { int ans = 0; - bool demodFound = false; - DemodBufferLen = 0x00; // test for FSK wave (easiest to 99% ID) - if (GetFskClock("", FALSE, FALSE)) { + 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"); + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: FSK Demod failed, ans: %d", ans); } else { if (EM4x05testDemodReadData(word, readCmd)) { return 1; @@ -596,65 +581,76 @@ int demodEM4x05resp(uint32_t *word, bool readCmd) { } } // 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); + ans = GetPskClock("", false, false); + if (ans>0) { + //try psk1 + ans = PSKDemod("0 0 6", false); if (!ans) { - if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: ASK/Manchester Demod failed"); + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: PSK1 Demod failed, ans: %d", ans); } else { if (EM4x05testDemodReadData(word, readCmd)) { return 1; + } else { + //try psk2 + psk1TOpsk2(DemodBuffer, DemodBufferLen); + if (EM4x05testDemodReadData(word, readCmd)) { + return 1; + } + } + //try psk1 inverted + ans = PSKDemod("0 1 6", false); + if (!ans) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: PSK1 Demod failed, ans: %d", ans); + } else { + if (EM4x05testDemodReadData(word, readCmd)) { + return 1; + } else { + //try psk2 + psk1TOpsk2(DemodBuffer, DemodBufferLen); + if (EM4x05testDemodReadData(word, readCmd)) { + return 1; + } + } } } } - 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 { - if (EM4x05testDemodReadData(word, readCmd)) { - return 1; - } + // manchester is more common than biphase... try first + 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, ans: %d", ans); + } else { + if (EM4x05testDemodReadData(word, readCmd)) { + return 1; } } - 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 { - if (EM4x05testDemodReadData(word, readCmd)) { - return 1; - } + //try biphase + ans = ASKbiphaseDemod("0 0 1", false); + if (!ans) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: ASK/biphase Demod failed, ans: %d", ans); + } else { + if (EM4x05testDemodReadData(word, readCmd)) { + return 1; } } - /*if (demodFound && bitsNeeded < DemodBufferLen) { - if (bitsNeeded > 0) { - setDemodBuf(DemodBuffer + startIdx + sizeof(preamble), bitsNeeded, 0); - CmdPrintDemodBuff("x"); + //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, ans: %d", ans); + } else { + if (EM4x05testDemodReadData(word, readCmd)) { + return 1; } - return 1; - }*/ + } + return -1; } -int EM4x05ReadWord(uint8_t addr, uint32_t pwd, bool usePwd) { +int EM4x05ReadWord_ext(uint8_t addr, uint32_t pwd, bool usePwd, uint32_t *wordData) { UsbCommand c = {CMD_EM4X_READ_WORD, {addr, pwd, usePwd}}; clearCommandBuffer(); SendCommand(&c); @@ -663,23 +659,26 @@ int EM4x05ReadWord(uint8_t addr, uint32_t pwd, bool usePwd) { 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"); + if ( !downloadSamplesEM() ) { 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: + return demodEM4x05resp(wordData, true); +} + +int EM4x05ReadWord(uint8_t addr, uint32_t pwd, bool usePwd) { uint32_t wordData = 0; - int success = demodEM4x05resp(&wordData, true); - if (success == 1) PrintAndLog("Got Address %02d | %08X",addr,wordData); + int success = EM4x05ReadWord_ext(addr, pwd, usePwd, &wordData); + if (success == 1) + PrintAndLog("%s Address %02d | %08X", (addr>13) ? "Lock":" Got",addr,wordData); + else + PrintAndLog("Read Address %02d | failed",addr); + return success; } @@ -698,12 +697,13 @@ int CmdEM4x05ReadWord(const char *Cmd) { PrintAndLog("Address must be between 0 and 15"); return 1; } - if ( pwd == 1 ) + if ( pwd == 1 ) { PrintAndLog("Reading address %02u", addr); - else { + } else { usePwd = true; PrintAndLog("Reading address %02u | password %08X", addr, pwd); } + return EM4x05ReadWord(addr, pwd, usePwd); } @@ -737,9 +737,9 @@ int CmdEM4x05dump(const char *Cmd) { for (; addr < 16; addr++) { if (addr == 2) { if (usePwd) { - PrintAndLog("PWD Address %02u | %08X",addr,pwd); + PrintAndLog(" PWD Address %02u | %08X",addr,pwd); } else { - PrintAndLog("PWD Address 02 | cannot read"); + PrintAndLog(" PWD Address 02 | cannot read"); } } else { success &= EM4x05ReadWord(addr, pwd, usePwd); @@ -801,24 +801,182 @@ int CmdEM4x05WriteWord(const char *Cmd) { 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; + if ( !downloadSamplesEM() ) { + return -1; } - 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"); + } else { + PrintAndLog("Write could not be verified"); } return result; } +void printEM4x05config(uint32_t wordData) { + uint16_t datarate = (((wordData & 0x3F)+1)*2); + uint8_t encoder = ((wordData >> 6) & 0xF); + char enc[14]; + memset(enc,0,sizeof(enc)); + + uint8_t PSKcf = (wordData >> 10) & 0x3; + char cf[10]; + memset(cf,0,sizeof(cf)); + uint8_t delay = (wordData >> 12) & 0x3; + char cdelay[33]; + memset(cdelay,0,sizeof(cdelay)); + uint8_t LWR = (wordData >> 14) & 0xF; //last word read + + switch (encoder) { + case 0: snprintf(enc,sizeof(enc),"NRZ"); break; + case 1: snprintf(enc,sizeof(enc),"Manchester"); break; + case 2: snprintf(enc,sizeof(enc),"Biphase"); break; + case 3: snprintf(enc,sizeof(enc),"Miller"); break; + case 4: snprintf(enc,sizeof(enc),"PSK1"); break; + case 5: snprintf(enc,sizeof(enc),"PSK2"); break; + case 6: snprintf(enc,sizeof(enc),"PSK3"); break; + case 7: snprintf(enc,sizeof(enc),"Unknown"); break; + case 8: snprintf(enc,sizeof(enc),"FSK1"); break; + case 9: snprintf(enc,sizeof(enc),"FSK2"); break; + default: snprintf(enc,sizeof(enc),"Unknown"); break; + } + + switch (PSKcf) { + case 0: snprintf(cf,sizeof(cf),"RF/2"); break; + case 1: snprintf(cf,sizeof(cf),"RF/8"); break; + case 2: snprintf(cf,sizeof(cf),"RF/4"); break; + case 3: snprintf(cf,sizeof(cf),"unknown"); break; + } + + switch (delay) { + case 0: snprintf(cdelay, sizeof(cdelay),"no delay"); break; + case 1: snprintf(cdelay, sizeof(cdelay),"BP/8 or 1/8th bit period delay"); break; + case 2: snprintf(cdelay, sizeof(cdelay),"BP/4 or 1/4th bit period delay"); break; + case 3: snprintf(cdelay, sizeof(cdelay),"no delay"); break; + } + PrintAndLog("ConfigWord: %08X (Word 4)\n", wordData); + PrintAndLog("Config Breakdown:", wordData); + PrintAndLog(" Data Rate: %02u | RF/%u", wordData & 0x3F, datarate); + PrintAndLog(" Encoder: %u | %s", encoder, enc); + PrintAndLog(" PSK CF: %u | %s", PSKcf, cf); + PrintAndLog(" Delay: %u | %s", delay, cdelay); + PrintAndLog(" LastWordR: %02u | Address of last word for default read", LWR); + PrintAndLog(" ReadLogin: %u | Read Login is %s", (wordData & 0x40000)>>18, (wordData & 0x40000) ? "Required" : "Not Required"); + PrintAndLog(" ReadHKL: %u | Read Housekeeping Words Login is %s", (wordData & 0x80000)>>19, (wordData & 0x80000) ? "Required" : "Not Required"); + PrintAndLog("WriteLogin: %u | Write Login is %s", (wordData & 0x100000)>>20, (wordData & 0x100000) ? "Required" : "Not Required"); + PrintAndLog(" WriteHKL: %u | Write Housekeeping Words Login is %s", (wordData & 0x200000)>>21, (wordData & 0x200000) ? "Required" : "Not Required"); + PrintAndLog(" R.A.W.: %u | Read After Write is %s", (wordData & 0x400000)>>22, (wordData & 0x400000) ? "On" : "Off"); + PrintAndLog(" Disable: %u | Disable Command is %s", (wordData & 0x800000)>>23, (wordData & 0x800000) ? "Accepted" : "Not Accepted"); + PrintAndLog(" R.T.F.: %u | Reader Talk First is %s", (wordData & 0x1000000)>>24, (wordData & 0x1000000) ? "Enabled" : "Disabled"); + PrintAndLog(" Pigeon: %u | Pigeon Mode is %s\n", (wordData & 0x4000000)>>26, (wordData & 0x4000000) ? "Enabled" : "Disabled"); +} + +void printEM4x05info(uint8_t chipType, uint8_t cap, uint16_t custCode, uint32_t serial) { + switch (chipType) { + case 9: PrintAndLog("\n Chip Type: %u | EM4305", chipType); break; + case 4: PrintAndLog(" Chip Type: %u | Unknown", chipType); break; + case 2: PrintAndLog(" Chip Type: %u | EM4469", chipType); break; + //add more here when known + default: PrintAndLog(" Chip Type: %u Unknown", chipType); break; + } + + switch (cap) { + case 3: PrintAndLog(" Cap Type: %u | 330pF",cap); break; + case 2: PrintAndLog(" Cap Type: %u | %spF",cap, (chipType==2)? "75":"210"); break; + case 1: PrintAndLog(" Cap Type: %u | 250pF",cap); break; + case 0: PrintAndLog(" Cap Type: %u | no resonant capacitor",cap); break; + default: PrintAndLog(" Cap Type: %u | unknown",cap); break; + } + + PrintAndLog(" Cust Code: %03u | %s", custCode, (custCode == 0x200) ? "Default": "Unknown"); + if (serial != 0) { + PrintAndLog("\n Serial #: %08X\n", serial); + } +} + +void printEM4x05ProtectionBits(uint32_t wordData) { + for (uint8_t i = 0; i < 15; i++) { + PrintAndLog(" Word: %02u | %s", i, (((1 << i) & wordData ) || i < 2) ? "Is Write Locked" : "Is Not Write Locked"); + if (i==14) { + PrintAndLog(" Word: %02u | %s", i+1, (((1 << i) & wordData ) || i < 2) ? "Is Write Locked" : "Is Not Write Locked"); + } + } +} + +//quick test for EM4x05/EM4x69 tag +bool EM4x05Block0Test(uint32_t *wordData) { + if (EM4x05ReadWord_ext(0,0,false,wordData) == 1) { + return true; + } + return false; +} + +int CmdEM4x05info(const char *Cmd) { + //uint8_t addr = 0; + uint32_t pwd; + uint32_t wordData = 0; + 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 ( pwd != 1 ) { + usePwd = true; + } + + // read word 0 (chip info) + // block 0 can be read even without a password. + if ( !EM4x05Block0Test(&wordData) ) + return -1; + + uint8_t chipType = (wordData >> 1) & 0xF; + uint8_t cap = (wordData >> 5) & 3; + uint16_t custCode = (wordData >> 9) & 0x3FF; + + // read word 1 (serial #) doesn't need pwd + wordData = 0; + if (EM4x05ReadWord_ext(1, 0, false, &wordData) != 1) { + //failed, but continue anyway... + } + printEM4x05info(chipType, cap, custCode, wordData); + + // read word 4 (config block) + // needs password if one is set + wordData = 0; + if ( EM4x05ReadWord_ext(4, pwd, usePwd, &wordData) != 1 ) { + //failed + return 0; + } + printEM4x05config(wordData); + + // read word 14 and 15 to see which is being used for the protection bits + wordData = 0; + if ( EM4x05ReadWord_ext(14, pwd, usePwd, &wordData) != 1 ) { + //failed + return 0; + } + // if status bit says this is not the used protection word + if (!(wordData & 0x8000)) { + if ( EM4x05ReadWord_ext(15, pwd, usePwd, &wordData) != 1 ) { + //failed + return 0; + } + } + if (!(wordData & 0x8000)) { + //something went wrong + return 0; + } + printEM4x05ProtectionBits(wordData); + + return 1; +} + + static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, @@ -828,9 +986,10 @@ static command_t CommandTable[] = {"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"}, + {"4x05dump", CmdEM4x05dump, 0, "(pwd) -- Read EM4x05/EM4x69 all word data"}, + {"4x05info", CmdEM4x05info, 0, "(pwd) -- Get info from EM4x05/EM4x69 tag"}, + {"4x05readword", CmdEM4x05ReadWord, 0, " (pwd) -- Read EM4x05/EM4x69 word data"}, + {"4x05writeword", CmdEM4x05WriteWord, 0, " (pwd) -- Write EM4x05/EM4x69 word data"}, {"4x50read", CmdEM4x50Read, 1, "demod data from EM4x50 tag from the graph buffer"}, {NULL, NULL, 0, NULL} };