From: root Date: Sat, 1 Jul 2017 15:53:06 +0000 (+0200) Subject: EM410x bruteforcing changes: Load the whole file at once, pause delay as parameter... X-Git-Tag: v3.1.0~196^2~7 X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/539337a7d2daca5918de38060c3caf7d08b5c3e6 EM410x bruteforcing changes: Load the whole file at once, pause delay as parameter, stop the execution on key press and EM410x conversion to signal function. --- diff --git a/client/cmdlfem4x.c b/client/cmdlfem4x.c index 167042d7..04308bc0 100644 --- a/client/cmdlfem4x.c +++ b/client/cmdlfem4x.c @@ -28,6 +28,7 @@ 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) { @@ -217,11 +218,54 @@ int usage_lf_em410x_sim(void) { return 0; } -// emulate an EM410X tag -int CmdEM410xSim(const char *Cmd) +// 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}; @@ -238,48 +282,8 @@ int CmdEM410xSim(const char *Cmd) 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 abort 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]; - } - - /* 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); - + ConstructEM410xEmulGraph(Cmd, clock); + CmdLFSim("0"); //240 start_gap. return 0; } @@ -287,14 +291,16 @@ int CmdEM410xSim(const char *Cmd) int usage_lf_em410x_brute(void) { PrintAndLog("Bruteforcing by emulating EM410x tag"); PrintAndLog(""); - PrintAndLog("Usage: lf em 410xbrute [h] ids.txt"); + PrintAndLog("Usage: lf em 410xbrute [h] ids.txt [d 2000] [clock]"); PrintAndLog("Options:"); - PrintAndLog(" h - this help"); - PrintAndLog(" ids.txt - file with id in HEX format one per line"); - PrintAndLog(" clock - clock (32|64) (optional)"); + PrintAndLog(" h - this help"); + PrintAndLog(" ids.txt - file with UIDs in HEX format one per line"); + PrintAndLog(" d (2000) - pause delay in milliseonds between UIDs simulation, default 1000ms (optional)"); + PrintAndLog(" clock - clock (32|64), default 64 (optional)"); PrintAndLog("samples:"); PrintAndLog(" lf em 410xbrute ids.txt"); PrintAndLog(" lf em 410xbrute ids.txt 32"); + PrintAndLog(" lf em 410xbrute ids.txt d 3000 32"); return 0; } @@ -303,96 +309,113 @@ int CmdEM410xBrute(const char *Cmd) char filename[FILE_PATH_SIZE]={0}; FILE *f = NULL; char buf[11]; - int i, n, j, binary[4], parity[4]; - - char cmdp = param_getchar(Cmd, 0); + uint32_t uidcnt = 0; + uint8_t stUidBlock = 20; + uint8_t *uidBlock = NULL, *p = NULL; + int ch; uint8_t uid[5] = {0x00}; - - if (cmdp == 'h' || cmdp == 'H') return usage_lf_em410x_sim(); /* clock is 64 in EM410x tags */ uint8_t clock = 64; - - param_getdec(Cmd,1, &clock); + /* default pause time: 1 second */ + uint32_t delay = 1000; + char delaystr[32] = {0x00}; + + char cmdp = param_getchar(Cmd, 0); + + if (cmdp == 'h' || cmdp == 'H') return usage_lf_em410x_brute(); + + + cmdp = param_getchar(Cmd, 1); + + if (cmdp == 'd' || cmdp == 'D') { + param_getstr(Cmd,2, delaystr); + if (strlen(delaystr) > 0) delay = (uint32_t) atoi(delaystr); + param_getdec(Cmd,3, &clock); + } else { + param_getdec(Cmd,1, &clock); + } param_getstr(Cmd, 0, 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 IDs file [%s]",filename); + 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) ) { - msleep(1000); 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; - //PrintAndLog("ID: %s", buf); - - if (param_gethex(buf, 0, uid, 10)) { - PrintAndLog("UID must include 10 HEX symbols"); - return 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; } - - PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X clock: %d", uid[0],uid[1],uid[2],uid[3],uid[4],clock); - - /* 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(&buf[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]; + 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; } - - /* 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); - + + sprintf(testuid, "%010lX", 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. - memset(buf, 0, sizeof(buf)); - + msleep(delay); } - - fclose(f); - + + free(uidBlock); return 0; } @@ -1316,7 +1339,7 @@ static command_t CommandTable[] = {"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 [clock rate] -- Bruteforcing by simulating EM410x tags (1 UID/s)"}, + {"410xbrute", CmdEM410xBrute, 0, "ids.txt [d (delay in ms)][clock rate] -- Bruteforcing by simulating EM410x tags (1 UID/s)"}, {"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"}, diff --git a/client/cmdlfem4x.h b/client/cmdlfem4x.h index 869d72d0..c4c4c2b2 100644 --- a/client/cmdlfem4x.h +++ b/client/cmdlfem4x.h @@ -21,6 +21,7 @@ extern int CmdAskEM410xDemod(const char *Cmd); extern int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo ); extern int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose); extern int CmdEM410xSim(const char *Cmd); +extern int CmdEM410xBrute(const char *Cmd); extern int CmdEM410xWatch(const char *Cmd); extern int CmdEM410xWatchnSpoof(const char *Cmd); extern int CmdEM410xWrite(const char *Cmd);