X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/60bb5ef73b299f4abdbf657b34477dfb1f94e35d..17a9ca0cdc865d16ecd12bd9fb08b5ab2b329d73:/client/cmdlfem4x.c diff --git a/client/cmdlfem4x.c b/client/cmdlfem4x.c index 1bcc384a..7cc62987 100644 --- a/client/cmdlfem4x.c +++ b/client/cmdlfem4x.c @@ -8,21 +8,17 @@ // Low frequency EM4x commands //----------------------------------------------------------------------------- -#include -#include -#include #include "cmdlfem4x.h" -char *global_em410xId; +uint64_t g_em410xid = 0; static int CmdHelp(const char *Cmd); int CmdEMdemodASK(const char *Cmd) { char cmdp = param_getchar(Cmd, 0); - int findone = (cmdp == '1') ? 1 : 0; - UsbCommand c={CMD_EM410X_DEMOD}; - c.arg[0]=findone; + uint8_t findone = (cmdp == '1') ? 1 : 0; + UsbCommand c = {CMD_EM410X_DEMOD, {findone, 0, 0}}; SendCommand(&c); return 0; } @@ -47,28 +43,34 @@ int CmdEM410xRead(const char *Cmd) PrintAndLog ("EM410x XL pattern found"); return 0; } - char id[12] = {0x00}; - //sprintf(id, "%010llx",lo); - sprintf(id, "%010"PRIu64, lo); - - global_em410xId = id; + g_em410xid = lo; return 1; } + +int usage_lf_em410x_sim(void) { + PrintAndLog("Simulating EM410x tag"); + PrintAndLog(""); + PrintAndLog("Usage: lf em4x em410xsim [h] "); + PrintAndLog("Options:"); + PrintAndLog(" h - this help"); + PrintAndLog(" uid - uid (10 HEX symbols)"); + PrintAndLog(" clock - clock (32|64) (optional)"); + PrintAndLog("samples:"); + PrintAndLog(" lf em4x em410xsim 0F0368568B"); + PrintAndLog(" lf em4x em410xsim 0F0368568B 32"); + return 0; +} + // emulate an EM410X tag int CmdEM410xSim(const char *Cmd) { int i, n, j, binary[4], parity[4]; + uint8_t uid[5] = {0x00}; char cmdp = param_getchar(Cmd, 0); - uint8_t uid[5] = {0x00}; + if (cmdp == 'h' || cmdp == 'H') return usage_lf_em410x_sim(); - if (cmdp == 'h' || cmdp == 'H') { - PrintAndLog("Usage: lf em4x em410xsim "); - PrintAndLog(""); - PrintAndLog(" sample: lf em4x em410xsim 0F0368568B"); - return 0; - } /* clock is 64 in EM410x tags */ uint8_t clock = 64; @@ -76,51 +78,51 @@ int CmdEM410xSim(const char *Cmd) PrintAndLog("UID must include 10 HEX symbols"); return 0; } + 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"); - /* clear our graph */ ClearGraph(0); - /* write 9 start bits */ - for (i = 0; i < 9; i++) - AppendGraph(0, clock, 1); - - /* for each hex char */ - parity[0] = parity[1] = parity[2] = parity[3] = 0; - for (i = 0; i < 10; i++) - { - /* read each hex char */ - sscanf(&Cmd[i], "%1x", &n); - for (j = 3; j >= 0; j--, n/= 2) - binary[j] = n % 2; - - /* append each bit */ - AppendGraph(0, clock, binary[0]); - AppendGraph(0, clock, binary[1]); - AppendGraph(0, clock, binary[2]); - AppendGraph(0, clock, binary[3]); - - /* append parity bit */ - AppendGraph(0, clock, binary[0] ^ binary[1] ^ binary[2] ^ binary[3]); - - /* keep track of column parity */ - parity[0] ^= binary[0]; - parity[1] ^= binary[1]; - parity[2] ^= binary[2]; - parity[3] ^= binary[3]; - } + /* write 9 start bits */ + for (i = 0; i < 9; i++) + AppendGraph(0, clock, 1); + + /* for each hex char */ + parity[0] = parity[1] = parity[2] = parity[3] = 0; + for (i = 0; i < 10; i++) + { + /* read each hex char */ + sscanf(&Cmd[i], "%1x", &n); + for (j = 3; j >= 0; j--, n/= 2) + binary[j] = n % 2; + + /* append each bit */ + AppendGraph(0, clock, binary[0]); + AppendGraph(0, clock, binary[1]); + AppendGraph(0, clock, binary[2]); + AppendGraph(0, clock, binary[3]); + + /* append parity bit */ + AppendGraph(0, clock, binary[0] ^ binary[1] ^ binary[2] ^ binary[3]); + + /* keep track of column parity */ + parity[0] ^= binary[0]; + parity[1] ^= binary[1]; + parity[2] ^= binary[2]; + parity[3] ^= binary[3]; + } - /* parity columns */ - AppendGraph(0, clock, parity[0]); - AppendGraph(0, clock, parity[1]); - AppendGraph(0, clock, parity[2]); - AppendGraph(0, clock, parity[3]); + /* parity columns */ + AppendGraph(0, clock, parity[0]); + AppendGraph(0, clock, parity[1]); + AppendGraph(0, clock, parity[2]); + AppendGraph(0, clock, parity[3]); - /* stop bit */ + /* stop bit */ AppendGraph(1, clock, 0); CmdLFSim("0"); //240 start_gap. @@ -152,10 +154,12 @@ int CmdEM410xWatch(const char *Cmd) } //currently only supports manchester modulations +// todo: helptext int CmdEM410xWatchnSpoof(const char *Cmd) { + // loops if the captured ID was in XL-format. CmdEM410xWatch(Cmd); - PrintAndLog("# Replaying captured ID: %s",global_em410xId); + PrintAndLog("# Replaying captured ID: %llu", g_em410xid); CmdLFaskSim(""); return 0; } @@ -221,39 +225,120 @@ int CmdEM410xWrite(const char *Cmd) bool EM_EndParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType) { - if (rows*cols>size) return false; + if (rows*cols>size) return FALSE; uint8_t colP=0; //assume last col is a parity and do not test for (uint8_t colNum = 0; colNum < cols-1; colNum++) { for (uint8_t rowNum = 0; rowNum < rows; rowNum++) { colP ^= BitStream[(rowNum*cols)+colNum]; } - if (colP != pType) return false; + if (colP != pType) return FALSE; } - return true; + return TRUE; } bool EM_ByteParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType) { - if (rows*cols>size) return false; + if (rows*cols>size) return FALSE; uint8_t rowP=0; //assume last row is a parity row and do not test for (uint8_t rowNum = 0; rowNum < rows-1; rowNum++) { for (uint8_t colNum = 0; colNum < cols; colNum++) { rowP ^= BitStream[(rowNum*cols)+colNum]; } - if (rowP != pType) return false; + if (rowP != pType) return FALSE; + } + return TRUE; +} + +// EM word parity test. +// 9*5 = 45 bits in total +// 012345678|r1 +// 012345678|r2 +// 012345678|r3 +// 012345678|r4 +// ------------ +//c012345678| 0 +// |- must be zero + +bool EMwordparitytest(uint8_t *bits){ + + // last row/col parity must be 0 + if (bits[44] != 0 ) return FALSE; + + // col parity check + uint8_t c1 = bytebits_to_byte(bits, 8) ^ bytebits_to_byte(bits+9, 8) ^ bytebits_to_byte(bits+18, 8) ^ bytebits_to_byte(bits+27, 8); + uint8_t c2 = bytebits_to_byte(bits+36, 8); + if ( c1 != c2 ) return FALSE; + + // row parity check + uint8_t rowP = 0; + for ( uint8_t i = 0; i < 36; ++i ) { + + rowP ^= bits[i]; + if ( i>0 && (i % 9) == 0) { + + if ( rowP != EVEN ) + return FALSE; + + rowP = 0; + } } - return true; + // all checks ok. + return TRUE; +} + + +//////////////// 4050 / 4450 commands +int usage_lf_em4x50_dump(void) { + PrintAndLog("Dump EM4x50/EM4x69. Tag must be on antenna. "); + PrintAndLog(""); + PrintAndLog("Usage: lf em 4x50dump [h] "); + PrintAndLog("Options:"); + PrintAndLog(" h - this help"); + PrintAndLog(" pwd - password (hex) (optional)"); + PrintAndLog("samples:"); + PrintAndLog(" lf em 4x50dump"); + PrintAndLog(" lf em 4x50dump 11223344"); + return 0; +} +int usage_lf_em4x50_read(void) { + PrintAndLog("Read EM 4x50/EM4x69. Tag must be on antenna. "); + PrintAndLog(""); + PrintAndLog("Usage: lf em 4x50read [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 4x50read 1"); + PrintAndLog(" lf em 4x50read 1 11223344"); + return 0; +} +int usage_lf_em4x50_write(void) { + PrintAndLog("Write EM 4x50/4x69. Tag must be on antenna. "); + PrintAndLog(""); + PrintAndLog("Usage: lf em 4x50write [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 4x50write 1 deadc0de"); + PrintAndLog(" lf em 4x50write 1 deadc0de 11223344"); + return 0; } uint32_t OutputEM4x50_Block(uint8_t *BitStream, size_t size, bool verbose, bool pTest) { if (size<45) return 0; + uint32_t code = bytebits_to_byte(BitStream,8); code = code<<8 | bytebits_to_byte(BitStream+9,8); code = code<<8 | bytebits_to_byte(BitStream+18,8); code = code<<8 | bytebits_to_byte(BitStream+27,8); + if (verbose || g_debugMode){ for (uint8_t i = 0; i<5; i++){ if (i == 4) PrintAndLog(""); //parity byte spacer @@ -277,7 +362,9 @@ 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 @@ -297,8 +384,7 @@ uint32_t OutputEM4x50_Block(uint8_t *BitStream, size_t size, bool verbose, bool * Word Read values. UID is stored in block 32. */ //completed by Marshmellow -int EM4x50Read(const char *Cmd, bool verbose) -{ +int EM4x50Read(const char *Cmd, bool verbose) { uint8_t fndClk[] = {8,16,32,40,50,64,128}; int clk = 0; int invert = 0; @@ -364,7 +450,10 @@ int EM4x50Read(const char *Cmd, bool verbose) break; } } - if (!clk) return 0; + if (!clk) { + PrintAndLog("ERROR: EM4x50 - didn't find a clock"); + return 0; + } } else tol = clk/8; // look for data start - should be 2 pairs of LW (pulses of clk*3,clk*2) @@ -485,121 +574,368 @@ int EM4x50Read(const char *Cmd, bool verbose) return (int)AllPTest; } -int CmdEM4x50Read(const char *Cmd) -{ +int CmdEM4x50Read(const char *Cmd) { + uint8_t ctmp = param_getchar(Cmd, 0); + if ( ctmp == 'H' || ctmp == 'h' ) return usage_lf_em4x50_read(); return EM4x50Read(Cmd, true); } +int CmdEM4x50Write(const char *Cmd){ + uint8_t ctmp = param_getchar(Cmd, 0); + if ( ctmp == 'H' || ctmp == 'h' ) return usage_lf_em4x50_write(); + PrintAndLog("no implemented yet"); + return 0; +} +int CmdEM4x50Dump(const char *Cmd){ + uint8_t ctmp = param_getchar(Cmd, 0); + if ( ctmp == 'H' || ctmp == 'h' ) return usage_lf_em4x50_dump(); + PrintAndLog("no implemented yet"); + return 0; +} -int CmdReadWord(const char *Cmd) -{ - int Word = -1; //default to invalid word - UsbCommand c; +#define EM_PREAMBLE_LEN 6 +// download samples from device +// and copy them to Graphbuffer +bool downloadSamplesEM(){ - sscanf(Cmd, "%d", &Word); + // 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, 2500) ) { + PrintAndLog("command execution time out"); + return FALSE; + } + setGraphBuf(got, sizeof(got)); + return TRUE; +} +//search for given preamble in given BitStream and return success=1 or fail=0 and startIndex +bool doPreambleSearch(size_t *startIdx){ - if ( (Word > 15) | (Word < 0) ) { - PrintAndLog("Word must be between 0 and 15"); - return 1; + // sanity check + if ( DemodBufferLen < EM_PREAMBLE_LEN) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305 demodbuffer too small"); + return FALSE; } - PrintAndLog("Reading word %d", Word); + // skip first two 0 bits as they might have been missed in the demod + uint8_t preamble[EM_PREAMBLE_LEN] = {0,0,1,0,1,0}; - 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; - SendCommand(&c); - return 0; + // set size to 15 to only test first 4 positions for the preamble + size_t size = (15 > DemodBufferLen) ? DemodBufferLen : 15; + *startIdx = 0; + uint8_t found = 0; + + // em only sends preamble once, so look for it once in the first x bits + for (int idx = 0; idx < size - EM_PREAMBLE_LEN; idx++){ + if (memcmp(DemodBuffer+idx, preamble, EM_PREAMBLE_LEN) == 0){ + //first index found + *startIdx = idx; + found = 1; + break; + } + } + + if ( !found) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305 preamble not found :: %d", *startIdx); + return FALSE; + } + return TRUE; } -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); +bool detectFSK(){ + // detect fsk clock + if (!GetFskClock("", FALSE, FALSE)) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM: FSK clock failed"); + return FALSE; + } + // demod + int ans = FSKrawDemod("0 0", FALSE); + if (!ans) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM: FSK Demod failed"); + return FALSE; + } + return TRUE; +} +// PSK clocks should be easy to detect ( but difficult to demod a non-repeating pattern... ) +bool detectPSK(){ + int ans = GetPskClock("", FALSE, FALSE); + if (ans <= 0) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM: PSK clock failed"); + return FALSE; + } + //demod + //try psk1 -- 0 0 6 (six errors?!?) + ans = PSKDemod("0 0 6", FALSE); + if (!ans) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM: PSK1 Demod failed"); + + //try psk1 inverted + ans = PSKDemod("0 1 6", FALSE); + if (!ans) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM: PSK1 inverted Demod failed"); + return FALSE; + } + } + // either PSK1 or PSK1 inverted is ok from here. + // lets check PSK2 later. + return TRUE; +} +// try manchester - NOTE: ST only applies to T55x7 tags. +bool detectASK_MAN(){ + bool stcheck = FALSE; + int ans = ASKDemod_ext("0 0 0", FALSE, FALSE, 1, &stcheck); + if (!ans) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM: ASK/Manchester Demod failed"); + return FALSE; + } + return TRUE; +} +bool detectASK_BI(){ + int ans = ASKbiphaseDemod("0 0 1", FALSE); + if (!ans) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM: ASK/biphase normal demod failed"); + + ans = ASKbiphaseDemod("0 1 1", FALSE); + if (!ans) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM: ASK/biphase inverted demod failed"); + return FALSE; + } + } + return TRUE; +} + +// param: idx - start index in demoded data. +bool setDemodBufferEM(uint32_t *word, size_t idx){ + + //test for even parity bits. + uint8_t parity[45] = {0}; + memcpy( parity, DemodBuffer, 45); + if (!EMwordparitytest(parity) ){ + PrintAndLog("DEBUG: Error - EM Parity tests failed"); + return FALSE; + } - if ( (Word > 15) | (Word < 0) ) { - PrintAndLog("Word must be between 0 and 15"); - return 1; + size_t size = removeParity(DemodBuffer, idx + EM_PREAMBLE_LEN, 9, 0, 44); + if (!size) { + if (g_debugMode) PrintAndLog("DEBUG: Error - EM Parity not detected"); + return FALSE; } + // set & copy to output + setDemodBuf(DemodBuffer, 40, 0); + *word = bytebits_to_byteLSBF(DemodBuffer, 32); + 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... +bool demodEM4x05resp(uint32_t *word) { + size_t idx = 0; - PrintAndLog("Reading word %d with password %08X", Word, Password); + if (detectASK_MAN() && doPreambleSearch( &idx )) + return setDemodBufferEM(word, idx); - 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 (detectASK_BI() && doPreambleSearch( &idx )) + return setDemodBufferEM(word, idx); + + if (detectFSK() && doPreambleSearch( &idx )) + return setDemodBufferEM(word, idx); + + if (detectPSK()) { + if (doPreambleSearch( &idx )) + return setDemodBufferEM(word, idx); + + psk1TOpsk2(DemodBuffer, DemodBufferLen); + if (doPreambleSearch( &idx )) + return setDemodBufferEM(word, idx); + } + return FALSE; +} + +//////////////// 4205 / 4305 commands +int usage_lf_em4x05_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 usage_lf_em4x05_read(void) { + PrintAndLog("Read EM4x05/EM4x69. Tag must be on antenna. "); + PrintAndLog(""); + PrintAndLog("Usage: lf em 4x05read [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 4x05read 1"); + PrintAndLog(" lf em 4x05read 1 11223344"); + return 0; +} +int usage_lf_em4x05_write(void) { + PrintAndLog("Write EM4x05/4x69. Tag must be on antenna. "); + PrintAndLog(""); + PrintAndLog("Usage: lf em 4x05write [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 4x05write 1 deadc0de"); + PrintAndLog(" lf em 4x05write 1 deadc0de 11223344"); return 0; } -int CmdWriteWord(const char *Cmd) -{ - int Word = 16; //default to invalid block - int Data = 0xFFFFFFFF; //default to blank data - UsbCommand c; +int CmdEM4x05Dump(const char *Cmd) { + uint8_t addr = 0; + uint32_t pwd = 0; + bool usePwd = false; + uint8_t ctmp = param_getchar(Cmd, 0); + if ( ctmp == 'H' || ctmp == 'h' ) return usage_lf_em4x05_dump(); + + // for now use default input of 1 as invalid (unlikely 1 will be a valid password...) + pwd = param_get32ex(Cmd, 0, 1, 16); - sscanf(Cmd, "%x %d", &Data, &Word); + if ( pwd != 1 ) + usePwd = true; + + int success = 1; + PrintAndLog("Addr | data | ascii"); + PrintAndLog("-----+--------+------"); + for (; addr < 16; addr++) { + if (addr == 2) { + if (usePwd) { + PrintAndLog(" %02u | %08X", addr, pwd); + } else { + PrintAndLog(" 02 | cannot read"); + } + } else { + //success &= EM4x05Read(addr, pwd, usePwd); + } + } + + return success; +} +//ICEMAN; mentalnote to self: -1 is not doable for uint32_t.. +int CmdEM4x05Read(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_em4x05_read(); + + addr = param_get8ex(Cmd, 0, -1, 10); + pwd = param_get32ex(Cmd, 1, -1, 16); - if (Word > 15) { - PrintAndLog("Word must be between 0 and 15"); + 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); + } - 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; + 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; + } + + if (!downloadSamplesEM()) + return -1; + + int testLen = (GraphTraceLen < 1000) ? GraphTraceLen : 1000; + if (graphJustNoise(GraphBuffer, testLen)) { + PrintAndLog("Tag not found"); + return -1; + } + + //attempt demod + uint32_t word = 0; + int isOk = demodEM4x05resp(&word); + if (isOk) + PrintAndLog("Got Address %02d | %08X",addr, word); + else + PrintAndLog("Read failed"); + + return isOk; } -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 CmdEM4x05Write(const char *Cmd) { + uint8_t ctmp = param_getchar(Cmd, 0); + if ( strlen(Cmd) == 0 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_em4x05_write(); - sscanf(Cmd, "%x %d %x", &Data, &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) { - 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("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; + } + + if (!downloadSamplesEM()) + return -1; + + //todo: check response for 00001010 then write data for write confirmation! + + //attempt demod: + //need 0 bits demoded (after preamble) to verify write cmd + uint32_t dummy = 0; + int isOk = demodEM4x05resp(&dummy); + if (isOk) + PrintAndLog("Write Verified"); + + return isOk; } -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"}, - {"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"}, +static command_t CommandTable[] = { + {"help", CmdHelp, 1, "This help"}, + {"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, " -- 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"}, + {"4x05read", CmdEM4x05Read, 0, "read word data from EM4205/4305"}, + {"4x05write", CmdEM4x05Write, 0, "write word data to EM4205/4305"}, + {"4x05dump", CmdEM4x05Dump, 0, "dump EM4205/4305 tag"}, + {"4x50read", CmdEM4x50Read, 0, "read word data from EM4x50"}, + {"4x50write", CmdEM4x50Write, 0, "write word data to EM4x50"}, + {"4x50dump", CmdEM4x50Dump, 0, "dump EM4x50 tag"}, {NULL, NULL, 0, NULL} };