X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/0a85edf471497a491fa3900fca9a585a6ed8f0c6..cfa9c98d573c5a0d35c6ce86501fc6fd57f91b81:/client/cmdlfem4x.c diff --git a/client/cmdlfem4x.c b/client/cmdlfem4x.c index 662629f0..d1bde911 100644 --- a/client/cmdlfem4x.c +++ b/client/cmdlfem4x.c @@ -8,10 +8,12 @@ // Low frequency EM4x commands //----------------------------------------------------------------------------- +#include "cmdlfem4x.h" + #include #include #include -#include "proxmark3.h" +#include "comms.h" #include "ui.h" #include "util.h" #include "graph.h" @@ -19,12 +21,14 @@ #include "cmddata.h" #include "cmdlf.h" #include "cmdmain.h" -#include "cmdlfem4x.h" #include "lfdemod.h" +#include "protocols.h" +#include "util_posix.h" -char *global_em410xId; +uint64_t g_em410xId=0; static int CmdHelp(const char *Cmd); +void ConstructEM410xEmulGraph(const char *uid,const uint8_t clock); int CmdEMdemodASK(const char *Cmd) { @@ -36,6 +40,103 @@ int CmdEMdemodASK(const char *Cmd) return 0; } +//by marshmellow +//print 64 bit EM410x ID in multiple formats +void printEM410x(uint32_t hi, uint64_t id) +{ + if (id || hi){ + uint64_t iii=1; + uint64_t id2lo=0; + uint32_t ii=0; + uint32_t i=0; + for (ii=5; ii>0;ii--){ + for (i=0;i<8;i++){ + id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8))); + } + } + if (hi){ + //output 88 bit em id + PrintAndLog("\nEM TAG ID : %06X%016" PRIX64, hi, id); + } else{ + //output 40 bit em id + PrintAndLog("\nEM TAG ID : %010" PRIX64, id); + PrintAndLog("\nPossible de-scramble patterns"); + PrintAndLog("Unique TAG ID : %010" PRIX64, id2lo); + PrintAndLog("HoneyWell IdentKey {"); + PrintAndLog("DEZ 8 : %08" PRIu64,id & 0xFFFFFF); + PrintAndLog("DEZ 10 : %010" PRIu64,id & 0xFFFFFFFF); + PrintAndLog("DEZ 5.5 : %05lld.%05" PRIu64,(id>>16LL) & 0xFFFF,(id & 0xFFFF)); + PrintAndLog("DEZ 3.5A : %03lld.%05" PRIu64,(id>>32ll),(id & 0xFFFF)); + PrintAndLog("DEZ 3.5B : %03lld.%05" PRIu64,(id & 0xFF000000) >> 24,(id & 0xFFFF)); + PrintAndLog("DEZ 3.5C : %03lld.%05" PRIu64,(id & 0xFF0000) >> 16,(id & 0xFFFF)); + PrintAndLog("DEZ 14/IK2 : %014" PRIu64,id); + PrintAndLog("DEZ 15/IK3 : %015" PRIu64,id2lo); + PrintAndLog("DEZ 20/ZK : %02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64, + (id2lo & 0xf000000000) >> 36, + (id2lo & 0x0f00000000) >> 32, + (id2lo & 0x00f0000000) >> 28, + (id2lo & 0x000f000000) >> 24, + (id2lo & 0x0000f00000) >> 20, + (id2lo & 0x00000f0000) >> 16, + (id2lo & 0x000000f000) >> 12, + (id2lo & 0x0000000f00) >> 8, + (id2lo & 0x00000000f0) >> 4, + (id2lo & 0x000000000f) + ); + uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00; + PrintAndLog("}\nOther : %05" PRIu64 "_%03" PRIu64 "_%08" PRIu64 "",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF)); + PrintAndLog("Pattern Paxton : %" PRIu64 " [0x%" PRIX64 "]", paxton, paxton); + + uint32_t p1id = (id & 0xFFFFFF); + uint8_t arr[32] = {0x00}; + int i =0; + int j = 23; + for (; i < 24; ++i, --j ){ + arr[i] = (p1id >> i) & 1; + } + + uint32_t p1 = 0; + + p1 |= arr[23] << 21; + p1 |= arr[22] << 23; + p1 |= arr[21] << 20; + p1 |= arr[20] << 22; + + p1 |= arr[19] << 18; + p1 |= arr[18] << 16; + p1 |= arr[17] << 19; + p1 |= arr[16] << 17; + + p1 |= arr[15] << 13; + p1 |= arr[14] << 15; + p1 |= arr[13] << 12; + p1 |= arr[12] << 14; + + p1 |= arr[11] << 6; + p1 |= arr[10] << 2; + p1 |= arr[9] << 7; + p1 |= arr[8] << 1; + + p1 |= arr[7] << 0; + p1 |= arr[6] << 8; + p1 |= arr[5] << 11; + p1 |= arr[4] << 3; + + p1 |= arr[3] << 10; + p1 |= arr[2] << 4; + p1 |= arr[1] << 5; + p1 |= arr[0] << 9; + PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1); + + uint16_t sebury1 = id & 0xFFFF; + uint8_t sebury2 = (id >> 16) & 0x7F; + uint32_t sebury3 = id & 0x7FFFFF; + PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3); + } + } + return; +} + /* Read the ID of an EM410x tag. * Format: * 1111 1111 1 <-- standard non-repeatable header @@ -44,39 +145,131 @@ int CmdEMdemodASK(const char *Cmd) * CCCC <-- each bit here is parity for the 10 bits above in corresponding column * 0 <-- stop bit, end of tag */ -int CmdEM410xRead(const char *Cmd) +int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo ) { - uint32_t hi=0; - uint64_t lo=0; - - if(!AskEm410xDemod("", &hi, &lo, false)) return 0; - PrintAndLog("EM410x pattern found: "); - printEM410x(hi, lo); - if (hi){ - PrintAndLog ("EM410x XL pattern found"); + size_t idx = 0; + uint8_t BitStream[512]={0}; + size_t BitLen = sizeof(BitStream); + if ( !getDemodBuf(BitStream, &BitLen) ) return 0; + + if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)) { + //set GraphBuffer for clone or sim command + setDemodBuf(DemodBuffer, (BitLen==40) ? 64 : 128, idx+1); + setClockGrid(g_DemodClock, g_DemodStartIdx + ((idx+1)*g_DemodClock)); + + if (g_debugMode) { + PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen); + printDemodBuff(); + } + if (verbose) { + PrintAndLog("EM410x pattern found: "); + printEM410x(*hi, *lo); + g_em410xId = *lo; + } + return 1; + } + return 0; +} + +//askdemod then call Em410xdecode +int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose) +{ + bool st = true; + if (!ASKDemod_ext(Cmd, false, false, 1, &st)) return 0; + return AskEm410xDecode(verbose, hi, lo); +} + +//by marshmellow +//takes 3 arguments - clock, invert and maxErr as integers +//attempts to demodulate ask while decoding manchester +//prints binary found and saves in graphbuffer for further commands +int CmdAskEM410xDemod(const char *Cmd) +{ + char cmdp = param_getchar(Cmd, 0); + if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') { + PrintAndLog("Usage: lf em 410xdemod [clock] <0|1> [maxError]"); + PrintAndLog(" [set clock as integer] optional, if not set, autodetect."); + PrintAndLog(" , 1 for invert output"); + PrintAndLog(" [set maximum allowed errors], default = 100."); + PrintAndLog(""); + PrintAndLog(" sample: lf em 410xdemod = demod an EM410x Tag ID from GraphBuffer"); + PrintAndLog(" : lf em 410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32"); + PrintAndLog(" : lf em 410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data"); + PrintAndLog(" : lf em 410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data"); + PrintAndLog(" : lf em 410xdemod 64 1 0 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/64 and inverting data and allowing 0 demod errors"); return 0; } - char id[12] = {0x00}; - sprintf(id, "%010"PRIx64,lo); - - global_em410xId = id; - return 1; + uint64_t lo = 0; + uint32_t hi = 0; + return AskEm410xDemod(Cmd, &hi, &lo, true); } -// emulate an EM410X tag -int CmdEM410xSim(const char *Cmd) +int usage_lf_em410x_sim(void) { + PrintAndLog("Simulating EM410x tag"); + PrintAndLog(""); + PrintAndLog("Usage: lf em 410xsim [h] "); + PrintAndLog("Options:"); + PrintAndLog(" h - this help"); + PrintAndLog(" uid - uid (10 HEX symbols)"); + PrintAndLog(" clock - clock (32|64) (optional)"); + PrintAndLog("samples:"); + PrintAndLog(" lf em 410xsim 0F0368568B"); + PrintAndLog(" lf em 410xsim 0F0368568B 32"); + return 0; +} + +// Construct the graph for emulating an EM410X tag +void ConstructEM410xEmulGraph(const char *uid,const uint8_t clock) { int i, n, j, binary[4], parity[4]; + /* 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(&uid[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]); + + /* stop bit */ + AppendGraph(1, clock, 0); +} +// emulate an EM410X tag +int CmdEM410xSim(const char *Cmd) +{ char cmdp = param_getchar(Cmd, 0); uint8_t uid[5] = {0x00}; - if (cmdp == 'h' || cmdp == 'H') { - PrintAndLog("Usage: lf em4x em410xsim "); - PrintAndLog(""); - PrintAndLog(" sample: lf em4x em410xsim 0F0368568B"); - return 0; - } + if (cmdp == 'h' || cmdp == 'H') return usage_lf_em410x_sim(); /* clock is 64 in EM410x tags */ uint8_t clock = 64; @@ -87,62 +280,156 @@ int CmdEM410xSim(const char *Cmd) 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"); + PrintAndLog("Press pm3-button to abort simulation"); + ConstructEM410xEmulGraph(Cmd, clock); + + CmdLFSim("0"); //240 start_gap. + return 0; +} - /* clear our graph */ - ClearGraph(0); +int usage_lf_em410x_brute(void) { + PrintAndLog("Bruteforcing by emulating EM410x tag"); + PrintAndLog(""); + PrintAndLog("Usage: lf em 410xbrute [h] ids.txt [d 2000] [c clock]"); + PrintAndLog("Options:"); + PrintAndLog(" h - this help"); + PrintAndLog(" ids.txt - file with UIDs in HEX format, one per line"); + PrintAndLog(" d (2000) - pause delay in milliseconds between UIDs simulation, default 1000 ms (optional)"); + PrintAndLog(" c (32) - clock (32|64), default 64 (optional)"); + PrintAndLog("samples:"); + PrintAndLog(" lf em 410xbrute ids.txt"); + PrintAndLog(" lf em 410xbrute ids.txt c 32"); + PrintAndLog(" lf em 410xbrute ids.txt d 3000"); + PrintAndLog(" lf em 410xbrute ids.txt d 3000 c 32"); + return 0; +} - /* write 9 start bits */ - for (i = 0; i < 9; i++) - AppendGraph(0, clock, 1); +int CmdEM410xBrute(const char *Cmd) +{ + char filename[FILE_PATH_SIZE]={0}; + FILE *f = NULL; + char buf[11]; + uint32_t uidcnt = 0; + uint8_t stUidBlock = 20; + uint8_t *uidBlock = NULL, *p = NULL; + int ch; + uint8_t uid[5] = {0x00}; + /* clock is 64 in EM410x tags */ + uint8_t clock = 64; + /* default pause time: 1 second */ + uint32_t delay = 1000; + + char cmdp = param_getchar(Cmd, 0); + + if (cmdp == 'h' || cmdp == 'H') return usage_lf_em410x_brute(); + - /* 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]); - - /* stop bit */ - AppendGraph(1, clock, 0); - - CmdLFSim("0"); //240 start_gap. + cmdp = param_getchar(Cmd, 1); + + if (cmdp == 'd' || cmdp == 'D') { + delay = param_get32ex(Cmd, 2, 1000, 10); + param_getdec(Cmd, 4, &clock); + } else if (cmdp == 'c' || cmdp == 'C') { + param_getdec(Cmd, 2, &clock); + delay = param_get32ex(Cmd, 4, 1000, 10); + } + + param_getstr(Cmd, 0, filename, sizeof(filename)); + + uidBlock = calloc(stUidBlock, 5); + if (uidBlock == NULL) return 1; + + if (strlen(filename) > 0) { + if ((f = fopen(filename, "r")) == NULL) { + PrintAndLog("Error: Could not open UIDs file [%s]",filename); + free(uidBlock); + return 1; + } + } else { + PrintAndLog("Error: Please specify a filename"); + free(uidBlock); + return 1; + } + + while( fgets(buf, sizeof(buf), f) ) { + if (strlen(buf) < 10 || buf[9] == '\n') continue; + while (fgetc(f) != '\n' && !feof(f)); //goto next line + + //The line start with # is comment, skip + if( buf[0]=='#' ) continue; + + if (param_gethex(buf, 0, uid, 10)) { + PrintAndLog("UIDs must include 10 HEX symbols"); + free(uidBlock); + fclose(f); + return 1; + } + + buf[10] = 0; + + if ( stUidBlock - uidcnt < 2) { + p = realloc(uidBlock, 5*(stUidBlock+=10)); + if (!p) { + PrintAndLog("Cannot allocate memory for UIDs"); + free(uidBlock); + fclose(f); + return 1; + } + uidBlock = p; + } + memset(uidBlock + 5 * uidcnt, 0, 5); + num_to_bytes(strtoll(buf, NULL, 16), 5, uidBlock + 5*uidcnt); + uidcnt++; + memset(buf, 0, sizeof(buf)); + } + fclose(f); + + if (uidcnt == 0) { + PrintAndLog("No UIDs found in file"); + free(uidBlock); + return 1; + } + PrintAndLog("Loaded %d UIDs from %s, pause delay: %d ms", uidcnt, filename, delay); + + // loop + for(uint32_t c = 0; c < uidcnt; ++c ) { + char testuid[11]; + testuid[10] = 0; + + if (ukbhit()) { + ch = getchar(); + (void)ch; + printf("\nAborted via keyboard!\n"); + free(uidBlock); + return 0; + } + + sprintf(testuid, "%010" PRIX64, bytes_to_num(uidBlock + 5*c, 5)); + PrintAndLog("Bruteforce %d / %d: simulating UID %s, clock %d", c + 1, uidcnt, testuid, clock); + + ConstructEM410xEmulGraph(testuid, clock); + + CmdLFSim("0"); //240 start_gap. + + msleep(delay); + } + + free(uidBlock); return 0; } + /* Function is equivalent of lf read + data samples + em410xread - * looped until an EM410x tag is detected - * + * looped until an EM410x tag is detected + * * Why is CmdSamples("16000")? * TBD: Auto-grow sample size based on detected sample rate. IE: If the * rate gets lower, then grow the number of samples - * Changed by martin, 4000 x 4 = 16000, + * Changed by martin, 4000 x 4 = 16000, * see http://www.proxmark.org/forum/viewtopic.php?pid=7235#p7235 + * + * EDIT -- capture enough to get 2 complete preambles at the slowest data rate known to be used (rf/64) (64*64*2+9 = 8201) marshmellow */ int CmdEM410xWatch(const char *Cmd) { @@ -151,10 +438,8 @@ int CmdEM410xWatch(const char *Cmd) printf("\naborted via keyboard!\n"); break; } - - CmdLFRead("s"); - getSamples("8201",true); //capture enough to get 2 complete preambles (4096*2+9) - } while (!CmdEM410xRead("")); + lf_read(true, 8201); + } while (!CmdAskEM410xDemod("")); return 0; } @@ -163,7 +448,7 @@ int CmdEM410xWatch(const char *Cmd) int CmdEM410xWatchnSpoof(const char *Cmd) { CmdEM410xWatch(Cmd); - PrintAndLog("# Replaying captured ID: %s",global_em410xId); + PrintAndLog("# Replaying captured ID: %010"PRIx64, g_em410xId); CmdLFaskSim(""); return 0; } @@ -174,7 +459,7 @@ int CmdEM410xWrite(const char *Cmd) int card = 0xFF; // invalid card value unsigned int clock = 0; // invalid clock value - sscanf(Cmd, "%" PRIx64 " %d %d", &id, &card, &clock); + sscanf(Cmd, "%" SCNx64 " %d %d", &id, &card, &clock); // Check ID if (id == 0xFFFFFFFFFFFFFFFF) { @@ -310,7 +595,7 @@ uint32_t OutputEM4x50_Block(uint8_t *BitStream, size_t size, bool verbose, bool int EM4x50Read(const char *Cmd, bool verbose) { uint8_t fndClk[] = {8,16,32,40,50,64,128}; - int clk = 0; + int clk = 0; int invert = 0; int tol = 0; int i, j, startblock, skip, block, start, end, low, high, minClk; @@ -321,13 +606,10 @@ int EM4x50Read(const char *Cmd, bool verbose) char tmp2[20]; int phaseoff; high = low = 0; - memset(tmpbuff, 0, MAX_GRAPH_TRACE_LEN / 64); + memset(tmpbuff, 0, sizeof(tmpbuff)); // get user entry if any sscanf(Cmd, "%i %i", &clk, &invert); - - // save GraphBuffer - to restore it later - save_restoreGB(1); // first get high and low values for (i = 0; i < GraphTraceLen; i++) { @@ -369,7 +651,7 @@ int EM4x50Read(const char *Cmd, bool verbose) if (!clk) { for (uint8_t clkCnt = 0; clkCnt<7; clkCnt++) { tol = fndClk[clkCnt]/8; - if (minClk >= fndClk[clkCnt]-tol && minClk <= fndClk[clkCnt]+1) { + if (minClk >= fndClk[clkCnt]-tol && minClk <= fndClk[clkCnt]+1) { clk=fndClk[clkCnt]; break; } @@ -394,7 +676,7 @@ int EM4x50Read(const char *Cmd, bool verbose) // skip over the remainder of LW skip += tmpbuff[i+1] + tmpbuff[i+2] + clk; - if (tmpbuff[i+3]>clk) + if (tmpbuff[i+3]>clk) phaseoff = tmpbuff[i+3]-clk; else phaseoff = 0; @@ -425,7 +707,9 @@ int EM4x50Read(const char *Cmd, bool verbose) } else if (start < 0) return 0; start = skip; snprintf(tmp2, sizeof(tmp2),"%d %d 1000 %d", clk, invert, clk*47); - // get rid of leading crap + // save GraphBuffer - to restore it later + save_restoreGB(GRAPH_SAVE); + // get rid of leading crap snprintf(tmp, sizeof(tmp), "%i", skip); CmdLtrim(tmp); bool pTest; @@ -436,7 +720,7 @@ int EM4x50Read(const char *Cmd, bool verbose) while (block < 6) { if (verbose || g_debugMode) PrintAndLog("\nBlock %i:", block); skip = phaseoff; - + // look for LW before start of next block for ( ; i < j - 4 ; ++i) { skip += tmpbuff[i]; @@ -452,13 +736,13 @@ int EM4x50Read(const char *Cmd, bool verbose) phaseoff = 0; i += 2; if (ASKDemod(tmp2, false, false, 1) < 1) { - save_restoreGB(0); + save_restoreGB(GRAPH_RESTORE); return 0; } //set DemodBufferLen to just one block DemodBufferLen = skip/clk; //test parities - pTest = EM_ByteParityTest(DemodBuffer,DemodBufferLen,5,9,0); + pTest = EM_ByteParityTest(DemodBuffer,DemodBufferLen,5,9,0); pTest &= EM_EndParityTest(DemodBuffer,DemodBufferLen,5,9,0); AllPTest &= pTest; //get output @@ -477,7 +761,7 @@ int EM4x50Read(const char *Cmd, bool verbose) PrintAndLog("Partial data - no end found!"); PrintAndLog("Try again with more samples."); } - PrintAndLog("Found data at sample: %i - using clock: %i", start, clk); + PrintAndLog("Found data at sample: %i - using clock: %i", start, clk); end = block; for (block=0; block < end; block++){ PrintAndLog("Block %d: %08x",block,Code[block]); @@ -491,7 +775,7 @@ int EM4x50Read(const char *Cmd, bool verbose) } //restore GraphBuffer - save_restoreGB(0); + save_restoreGB(GRAPH_RESTORE); return (int)AllPTest; } @@ -519,9 +803,8 @@ int usage_lf_em_read(void) { // 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) ) { + uint8_t got[6000]; + if (!GetFromBigBuf(got, sizeof(got), 0, NULL, 4000, true)) { PrintAndLog("command execution time out"); return false; } @@ -530,15 +813,17 @@ bool downloadSamplesEM() { } bool EM4x05testDemodReadData(uint32_t *word, bool readCmd) { - // em4x05/em4x69 preamble is 00001010 + // 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 20 to only test first 14 positions for the preamble - size_t size = (20 > DemodBufferLen) ? DemodBufferLen : 20; - //test preamble - if ( !onePreambleSearch(DemodBuffer, preamble, sizeof(preamble), size, &startIdx) ) { + // 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 ( !preambleSearchEx(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx, true) ) { if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305 preamble not found :: %d", startIdx); return false; } @@ -548,19 +833,21 @@ bool EM4x05testDemodReadData(uint32_t *word, bool readCmd) { 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 ) { + // test for even parity bits and remove them. (leave out the end row of parities so 36 bits) + if ( removeParity(DemodBuffer, startIdx + sizeof(preamble),9,0,36) == 0 ) { if (g_debugMode) PrintAndLog("DEBUG: Error - Parity not detected"); return false; } - setDemodBuf(DemodBuffer, 40, 0); + setDemodBuf(DemodBuffer, 32, 0); + //setClockGrid(0,0); + *word = bytebits_to_byteLSBF(DemodBuffer, 32); } return true; } -// FSK, PSK, ASK/MANCHESTER, ASK/BIPHASE, ASK/DIPHASE +// 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) { @@ -627,7 +914,7 @@ int demodEM4x05resp(uint32_t *word, bool readCmd) { //try biphase ans = ASKbiphaseDemod("0 0 1", false); - if (!ans) { + if (!ans) { if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: ASK/biphase Demod failed, ans: %d", ans); } else { if (EM4x05testDemodReadData(word, readCmd)) { @@ -637,7 +924,7 @@ int demodEM4x05resp(uint32_t *word, bool readCmd) { //try diphase (differential biphase or inverted) ans = ASKbiphaseDemod("0 1 1", false); - if (!ans) { + if (!ans) { if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: ASK/biphase Demod failed, ans: %d", ans); } else { if (EM4x05testDemodReadData(word, readCmd)) { @@ -652,7 +939,7 @@ int EM4x05ReadWord_ext(uint8_t addr, uint32_t pwd, bool usePwd, uint32_t *wordDa UsbCommand c = {CMD_EM4X_READ_WORD, {addr, pwd, usePwd}}; clearCommandBuffer(); SendCommand(&c); - UsbCommand resp; + UsbCommand resp; if (!WaitForResponseTimeout(CMD_ACK, &resp, 2500)){ PrintAndLog("Command timed out"); return -1; @@ -662,7 +949,6 @@ int EM4x05ReadWord_ext(uint8_t addr, uint32_t pwd, bool usePwd, uint32_t *wordDa } int testLen = (GraphTraceLen < 1000) ? GraphTraceLen : 1000; if (graphJustNoise(GraphBuffer, testLen)) { - PrintAndLog("no tag not found"); return -1; } //attempt demod: @@ -673,7 +959,7 @@ int EM4x05ReadWord(uint8_t addr, uint32_t pwd, bool usePwd) { uint32_t wordData = 0; int success = EM4x05ReadWord_ext(addr, pwd, usePwd, &wordData); if (success == 1) - PrintAndLog(" Got Address %02d | %08X",addr,wordData); + PrintAndLog("%s Address %02d | %08X", (addr>13) ? "Lock":" Got",addr,wordData); else PrintAndLog("Read Address %02d | failed",addr); @@ -690,7 +976,7 @@ int CmdEM4x05ReadWord(const char *Cmd) { 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 ( (addr > 15) ) { PrintAndLog("Address must be between 0 and 15"); return 1; @@ -727,7 +1013,7 @@ int CmdEM4x05dump(const char *Cmd) { // 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; } @@ -751,50 +1037,44 @@ int CmdEM4x05dump(const char *Cmd) { int usage_lf_em_write(void) { PrintAndLog("Write EM4x05/EM4x69. Tag must be on antenna. "); PrintAndLog(""); - PrintAndLog("Usage: lf em 4x05writeword [h]
"); + PrintAndLog("Usage: lf em 4x05writeword [h] a
d p [s] [i]"); 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(" h - this help"); + PrintAndLog(" a
- memory address to write to. (0-15)"); + PrintAndLog(" d - data to write (hex)"); + PrintAndLog(" p - password (hex) (optional)"); + PrintAndLog(" s - swap the data bit order before write"); + PrintAndLog(" i - invert the data bits before write"); PrintAndLog("samples:"); - PrintAndLog(" lf em 4x05writeword 1"); - PrintAndLog(" lf em 4x05writeword 1 deadc0de 11223344"); + PrintAndLog(" lf em 4x05writeword a 5 d 11223344"); + PrintAndLog(" lf em 4x05writeword a 5 p deadc0de d 11223344 s i"); return 0; } -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); - - +// note: em4x05 doesn't have a way to invert data output so we must invert the data prior to writing +// it if invertion is needed. (example FSK2a vs FSK) +// also em4x05 requires swapping word data when compared to the data used for t55xx chips. +int EM4x05WriteWord(uint8_t addr, uint32_t data, uint32_t pwd, bool usePwd, bool swap, bool invert) { + if (swap) data = SwapBits(data, 32); + + if (invert) data ^= 0xFFFFFFFF; + if ( (addr > 15) ) { PrintAndLog("Address must be between 0 and 15"); - return 1; + 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); + if ( !usePwd ) { + PrintAndLog("Writing address %d data %08X", addr, data); + } else { + PrintAndLog("Writing address %d data %08X using password %08X", addr, data, pwd); } - + uint16_t flag = (addr << 8 ) | usePwd; - + UsbCommand c = {CMD_EM4X_WRITE_WORD, {flag, data, pwd}}; clearCommandBuffer(); SendCommand(&c); - UsbCommand resp; + UsbCommand resp; if (!WaitForResponseTimeout(CMD_ACK, &resp, 2000)){ PrintAndLog("Error occurred, device did not respond during write operation."); return -1; @@ -802,18 +1082,200 @@ int CmdEM4x05WriteWord(const char *Cmd) { if ( !downloadSamplesEM() ) { return -1; } - //check response for 00001010 for write confirmation! + //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; } +int CmdEM4x05WriteWord(const char *Cmd) { + bool errors = false; + bool usePwd = false; + uint32_t data = 0xFFFFFFFF; + uint32_t pwd = 0xFFFFFFFF; + bool swap = false; + bool invert = false; + uint8_t addr = 16; // default to invalid address + bool gotData = false; + char cmdp = 0; + while(param_getchar(Cmd, cmdp) != 0x00) + { + switch(param_getchar(Cmd, cmdp)) + { + case 'h': + case 'H': + return usage_lf_em_write(); + case 'a': + case 'A': + addr = param_get8ex(Cmd, cmdp+1, 16, 10); + cmdp += 2; + break; + case 'd': + case 'D': + data = param_get32ex(Cmd, cmdp+1, 0, 16); + gotData = true; + cmdp += 2; + break; + case 'i': + case 'I': + invert = true; + cmdp++; + break; + case 'p': + case 'P': + pwd = param_get32ex(Cmd, cmdp+1, 1, 16); + if (pwd == 1) { + PrintAndLog("invalid pwd"); + errors = true; + } + usePwd = true; + cmdp += 2; + break; + case 's': + case 'S': + swap = true; + cmdp++; + break; + default: + PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp)); + errors = true; + break; + } + if(errors) break; + } + //Validations + if(errors) return usage_lf_em_write(); + + if ( strlen(Cmd) == 0 ) return usage_lf_em_write(); + + if (!gotData) { + PrintAndLog("You must enter the data you want to write"); + return usage_lf_em_write(); + } + return EM4x05WriteWord(addr, data, pwd, usePwd, swap, invert); +} + +int usage_lf_em_protect(void) { + PrintAndLog("Protect EM4x05. Tag must be on antenna. "); + PrintAndLog(""); + PrintAndLog("Usage: lf em 4x05protect [h] d p [s] [i]"); + PrintAndLog("Options:"); + PrintAndLog(" h - this help"); + PrintAndLog(" d - data to write (hex)"); + PrintAndLog(" p - password (hex) (optional)"); + PrintAndLog(" s - swap the data bit order before write"); + PrintAndLog(" i - invert the data bits before write"); + PrintAndLog("samples:"); + PrintAndLog(" lf em 4x05protect d 11223344"); + PrintAndLog(" lf em 4x05protect p deadc0de d 11223344 s i"); + return 0; +} + +int EM4x05Protect(uint32_t data, uint32_t pwd, bool usePwd, bool swap, bool invert) { + if (swap) data = SwapBits(data, 32); + + if (invert) data ^= 0xFFFFFFFF; + + if ( !usePwd ) { + PrintAndLog("Writing Protect data %08X", data); + } else { + PrintAndLog("Writing Protect data %08X using password %08X", data, pwd); + } + + uint16_t flag = usePwd; + + UsbCommand c = {CMD_EM4X_PROTECT, {flag, data, pwd}}; + clearCommandBuffer(); + SendCommand(&c); + UsbCommand resp; + if (!WaitForResponseTimeout(CMD_ACK, &resp, 2000)){ + PrintAndLog("Error occurred, device did not respond during protect operation."); + return -1; + } + if ( !downloadSamplesEM() ) { + return -1; + } + //check response for 00001010 for write confirmation! + //attempt demod: + uint32_t dummy = 0; + int result = demodEM4x05resp(&dummy,false); + if (result == 1) { + PrintAndLog("Protect Verified"); + } else { + PrintAndLog("Protect could not be verified"); + } + return result; +} + +int CmdEM4x05ProtectWrite(const char *Cmd) { + bool errors = false; + bool usePwd = false; + uint32_t data = 0xFFFFFFFF; + uint32_t pwd = 0xFFFFFFFF; + bool swap = false; + bool invert = false; + bool gotData = false; + char cmdp = 0; + while(param_getchar(Cmd, cmdp) != 0x00) + { + switch(param_getchar(Cmd, cmdp)) + { + case 'h': + case 'H': + return usage_lf_em_write(); + case 'd': + case 'D': + data = param_get32ex(Cmd, cmdp+1, 0, 16); + gotData = true; + cmdp += 2; + break; + case 'i': + case 'I': + invert = true; + cmdp++; + break; + case 'p': + case 'P': + pwd = param_get32ex(Cmd, cmdp+1, 1, 16); + if (pwd == 1) { + PrintAndLog("invalid pwd"); + errors = true; + } + usePwd = true; + cmdp += 2; + break; + case 's': + case 'S': + swap = true; + cmdp++; + break; + default: + PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp)); + errors = true; + break; + } + if(errors) break; + } + //Validations + if(errors) return usage_lf_em_protect(); + + if ( strlen(Cmd) == 0 ) return usage_lf_em_protect(); + + if (!gotData) { + PrintAndLog("You must enter the data you want to write"); + return usage_lf_em_protect(); + } + return EM4x05Protect(data, pwd, usePwd, swap, invert); +} + void printEM4x05config(uint32_t wordData) { - uint16_t datarate = (((wordData & 0x3F)+1)*2); + uint16_t datarate = EM4x05_GET_BITRATE(wordData); uint8_t encoder = ((wordData >> 6) & 0xF); char enc[14]; memset(enc,0,sizeof(enc)); @@ -824,8 +1286,8 @@ void printEM4x05config(uint32_t wordData) { uint8_t delay = (wordData >> 12) & 0x3; char cdelay[33]; memset(cdelay,0,sizeof(cdelay)); - uint8_t LWR = (wordData >> 14) & 0xF; //last word read - + uint8_t numblks = EM4x05_GET_NUM_BLOCKS(wordData); + uint8_t LWR = numblks+5-1; //last word read switch (encoder) { case 0: snprintf(enc,sizeof(enc),"NRZ"); break; case 1: snprintf(enc,sizeof(enc),"Manchester"); break; @@ -853,21 +1315,29 @@ void printEM4x05config(uint32_t wordData) { case 2: snprintf(cdelay, sizeof(cdelay),"BP/4 or 1/4th bit period delay"); break; case 3: snprintf(cdelay, sizeof(cdelay),"no delay"); break; } + uint8_t readLogin = (wordData & EM4x05_READ_LOGIN_REQ)>>18; + uint8_t readHKL = (wordData & EM4x05_READ_HK_LOGIN_REQ)>>19; + uint8_t writeLogin = (wordData & EM4x05_WRITE_LOGIN_REQ)>>20; + uint8_t writeHKL = (wordData & EM4x05_WRITE_HK_LOGIN_REQ)>>21; + uint8_t raw = (wordData & EM4x05_READ_AFTER_WRITE)>>22; + uint8_t disable = (wordData & EM4x05_DISABLE_ALLOWED)>>23; + uint8_t rtf = (wordData & EM4x05_READER_TALK_FIRST)>>24; + uint8_t pigeon = (wordData & (1<<26))>>26; PrintAndLog("ConfigWord: %08X (Word 4)\n", wordData); - PrintAndLog("Config Breakdown:", wordData); - PrintAndLog(" Data Rate: %02X | RF/%u", wordData & 0x3F, datarate); + PrintAndLog("Config Breakdown:"); + 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 default word 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"); + PrintAndLog(" LastWordR: %02u | Address of last word for default read - meaning %u blocks are output", LWR, numblks); + PrintAndLog(" ReadLogin: %u | Read Login is %s", readLogin, readLogin ? "Required" : "Not Required"); + PrintAndLog(" ReadHKL: %u | Read Housekeeping Words Login is %s", readHKL, readHKL ? "Required" : "Not Required"); + PrintAndLog("WriteLogin: %u | Write Login is %s", writeLogin, writeLogin ? "Required" : "Not Required"); + PrintAndLog(" WriteHKL: %u | Write Housekeeping Words Login is %s", writeHKL, writeHKL ? "Required" : "Not Required"); + PrintAndLog(" R.A.W.: %u | Read After Write is %s", raw, raw ? "On" : "Off"); + PrintAndLog(" Disable: %u | Disable Command is %s", disable, disable ? "Accepted" : "Not Accepted"); + PrintAndLog(" R.T.F.: %u | Reader Talk First is %s", rtf, rtf ? "Enabled" : "Disabled"); + PrintAndLog(" Pigeon: %u | Pigeon Mode is %s\n", pigeon, pigeon ? "Enabled" : "Disabled"); } void printEM4x05info(uint8_t chipType, uint8_t cap, uint16_t custCode, uint32_t serial) { @@ -893,6 +1363,15 @@ void printEM4x05info(uint8_t chipType, uint8_t cap, uint16_t custCode, uint32_t } } +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) { @@ -911,20 +1390,20 @@ int CmdEM4x05info(const char *Cmd) { // 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) ) + 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) { @@ -932,32 +1411,55 @@ int CmdEM4x05info(const char *Cmd) { } printEM4x05info(chipType, cap, custCode, wordData); - // read word 4 (config block) + // read word 4 (config block) // needs password if one is set wordData = 0; if ( EM4x05ReadWord_ext(4, pwd, usePwd, &wordData) != 1 ) { //failed + PrintAndLog("Config block read failed - might be password protected."); 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"}, - {"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"}, + {"help", CmdHelp, 1, "This help"}, + {"410xread", CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"}, + {"410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"}, + {"410xsim", CmdEM410xSim, 0, " [clock rate] -- Simulate EM410x tag"}, + {"410xbrute", CmdEM410xBrute, 0, "ids.txt [d (delay in ms)] [c (clock rate)] -- Reader bruteforce attack by simulating EM410x tags"}, {"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, 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"}, + {"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"}, + {"4x05protect", CmdEM4x05ProtectWrite, 0, " (pwd) -- Write Protection to EM4x05"}, + {"4x50read", CmdEM4x50Read, 1, "demod data from EM4x50 tag from the graph buffer"}, {NULL, NULL, 0, NULL} };