X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/083ca3de73b2ae8f3842cae24571962a27741601..c99dc845b1057be4ba2e535730345b4e6e8bfc58:/client/cmdlf.c?ds=sidebyside diff --git a/client/cmdlf.c b/client/cmdlf.c index 404708b6..f268eaa2 100644 --- a/client/cmdlf.c +++ b/client/cmdlf.c @@ -12,7 +12,6 @@ #include #include #include -//#include "proxusb.h" #include "proxmark3.h" #include "data.h" #include "graph.h" @@ -20,6 +19,7 @@ #include "cmdparser.h" #include "cmdmain.h" #include "cmddata.h" +#include "util.h" #include "cmdlf.h" #include "cmdlfhid.h" #include "cmdlfti.h" @@ -77,22 +77,18 @@ int CmdFlexdemod(const char *Cmd) GraphBuffer[start] = 2; GraphBuffer[start+1] = -2; + uint8_t bits[64] = {0x00}; - uint8_t bits[64]; - - int bit; + int bit, sum; i = start; for (bit = 0; bit < 64; bit++) { - int j; - int sum = 0; - for (j = 0; j < 16; j++) { + sum = 0; + for (int j = 0; j < 16; j++) { sum += GraphBuffer[i++]; } - if (sum > 0) { - bits[bit] = 1; - } else { - bits[bit] = 0; - } + + bits[bit] = (sum > 0) ? 1 : 0; + PrintAndLog("bit %d sum %d", bit, sum); } @@ -110,15 +106,14 @@ int CmdFlexdemod(const char *Cmd) } } + // HACK writing back to graphbuffer. GraphTraceLen = 32*64; i = 0; int phase = 0; for (bit = 0; bit < 64; bit++) { - if (bits[bit] == 0) { - phase = 0; - } else { - phase = 1; - } + + phase = (bits[bit] == 0) ? 0 : 1; + int j; for (j = 0; j < 32; j++) { GraphBuffer[i++] = phase; @@ -137,12 +132,14 @@ int CmdIndalaDemod(const char *Cmd) int state = -1; int count = 0; int i, j; + // worst case with GraphTraceLen=64000 is < 4096 // under normal conditions it's < 2048 + uint8_t rawbits[4096]; int rawbit = 0; int worst = 0, worstPos = 0; - PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32); + // PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32); for (i = 0; i < GraphTraceLen-1; i += 2) { count += 1; if ((GraphBuffer[i] > GraphBuffer[i + 1]) && (state != 1)) { @@ -171,8 +168,13 @@ int CmdIndalaDemod(const char *Cmd) count = 0; } } - PrintAndLog("Recovered %d raw bits", rawbit); - PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst, worstPos); + + if (rawbit>0){ + PrintAndLog("Recovered %d raw bits, expected: %d", rawbit, GraphTraceLen/32); + PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst, worstPos); + } else { + return 0; + } // Finding the start of a UID int uidlen, long_wait; @@ -183,6 +185,7 @@ int CmdIndalaDemod(const char *Cmd) uidlen = 64; long_wait = 29; } + int start; int first = 0; for (start = 0; start <= rawbit - uidlen; start++) { @@ -196,6 +199,7 @@ int CmdIndalaDemod(const char *Cmd) break; } } + if (start == rawbit - uidlen + 1) { PrintAndLog("nothing to wait for"); return 0; @@ -209,12 +213,12 @@ int CmdIndalaDemod(const char *Cmd) } // Dumping UID - uint8_t bits[224]; - char showbits[225]; - showbits[uidlen]='\0'; + uint8_t bits[224] = {0x00}; + char showbits[225] = {0x00}; int bit; i = start; int times = 0; + if (uidlen > rawbit) { PrintAndLog("Warning: not enough raw bits to get a full UID"); for (bit = 0; bit < rawbit; bit++) { @@ -236,8 +240,8 @@ int CmdIndalaDemod(const char *Cmd) //convert UID to HEX uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7; int idx; - uid1=0; - uid2=0; + uid1 = uid2 = 0; + if (uidlen==64){ for( idx=0; idx<64; idx++) { if (showbits[idx] == '0') { @@ -251,11 +255,8 @@ int CmdIndalaDemod(const char *Cmd) PrintAndLog("UID=%s (%x%08x)", showbits, uid1, uid2); } else { - uid3=0; - uid4=0; - uid5=0; - uid6=0; - uid7=0; + uid3 = uid4 = uid5 = uid6 = uid7 = 0; + for( idx=0; idx<224; idx++) { uid1=(uid1<<1)|(uid2>>31); uid2=(uid2<<1)|(uid3>>31); @@ -263,15 +264,19 @@ int CmdIndalaDemod(const char *Cmd) uid4=(uid4<<1)|(uid5>>31); uid5=(uid5<<1)|(uid6>>31); uid6=(uid6<<1)|(uid7>>31); - if (showbits[idx] == '0') uid7=(uid7<<1)|0; - else uid7=(uid7<<1)|1; + + if (showbits[idx] == '0') + uid7 = (uid7<<1) | 0; + else + uid7 = (uid7<<1) | 1; } PrintAndLog("UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7); } // Checking UID against next occurrences - for (; i + uidlen <= rawbit;) { int failed = 0; + for (; i + uidlen <= rawbit;) { + failed = 0; for (bit = 0; bit < uidlen; bit++) { if (bits[bit] != rawbits[i++]) { failed = 1; @@ -283,9 +288,12 @@ int CmdIndalaDemod(const char *Cmd) } times += 1; } + PrintAndLog("Occurrences: %d (expected %d)", times, (rawbit - start) / uidlen); // Remodulating for tag cloning + // HACK: 2015-01-04 this will have an impact on our new way of seening lf commands (demod) + // since this changes graphbuffer data. GraphTraceLen = 32*uidlen; i = 0; int phase = 0; @@ -303,20 +311,15 @@ int CmdIndalaDemod(const char *Cmd) } RepaintGraphWindow(); - return 0; + return 1; } int CmdIndalaClone(const char *Cmd) { - unsigned int uid1, uid2, uid3, uid4, uid5, uid6, uid7; UsbCommand c; - uid1=0; - uid2=0; - uid3=0; - uid4=0; - uid5=0; - uid6=0; - uid7=0; + unsigned int uid1, uid2, uid3, uid4, uid5, uid6, uid7; + + uid1 = uid2 = uid3 = uid4 = uid5 = uid6 = uid7 = 0; int n = 0, i = 0; if (strchr(Cmd,'l') != 0) { @@ -338,9 +341,7 @@ int CmdIndalaClone(const char *Cmd) c.d.asDwords[4] = uid5; c.d.asDwords[5] = uid6; c.d.asDwords[6] = uid7; - } - else - { + } else { while (sscanf(&Cmd[i++], "%1x", &n ) == 1) { uid1 = (uid1 << 4) | (uid2 >> 28); uid2 = (uid2 << 4) | (n & 0xf); @@ -355,21 +356,154 @@ int CmdIndalaClone(const char *Cmd) return 0; } +int usage_lf_read() +{ + PrintAndLog("Usage: lf read"); + PrintAndLog("Options: "); + PrintAndLog(" h This help"); + PrintAndLog("This function takes no arguments. "); + PrintAndLog("Use 'lf config' to set parameters."); + return 0; +} +int usage_lf_snoop() +{ + PrintAndLog("Usage: lf snoop"); + PrintAndLog("Options: "); + PrintAndLog(" h This help"); + PrintAndLog("This function takes no arguments. "); + PrintAndLog("Use 'lf config' to set parameters."); + return 0; +} + +int usage_lf_config() +{ + PrintAndLog("Usage: lf config [H|] [b ] [d ] [a 0|1]"); + PrintAndLog("Options: "); + PrintAndLog(" h This help"); + PrintAndLog(" L Low frequency (125 KHz)"); + PrintAndLog(" H High frequency (134 KHz)"); + PrintAndLog(" q Manually set divisor. 88-> 134KHz, 95-> 125 Hz"); + PrintAndLog(" b Sets resolution of bits per sample. Default (max): 8"); + PrintAndLog(" d Sets decimation. A value of N saves only 1 in N samples. Default: 1"); + PrintAndLog(" a [0|1] Averaging - if set, will average the stored sample value when decimating. Default: 1"); + PrintAndLog(" t Sets trigger threshold. 0 means no threshold"); + PrintAndLog("Examples:"); + PrintAndLog(" lf config b 8 L"); + PrintAndLog(" Samples at 125KHz, 8bps."); + PrintAndLog(" lf config H b 4 d 3"); + PrintAndLog(" Samples at 134KHz, averages three samples into one, stored with "); + PrintAndLog(" a resolution of 4 bits per sample."); + PrintAndLog(" lf read"); + PrintAndLog(" Performs a read (active field)"); + PrintAndLog(" lf snoop"); + PrintAndLog(" Performs a snoop (no active field)"); + return 0; +} + +int CmdLFSetConfig(const char *Cmd) +{ + + uint8_t divisor = 0;//Frequency divisor + uint8_t bps = 0; // Bits per sample + uint8_t decimation = 0; //How many to keep + bool averaging = 1; // Defaults to true + bool errors = FALSE; + int trigger_threshold =-1;//Means no change + uint8_t unsigned_trigg = 0; + + uint8_t cmdp =0; + while(param_getchar(Cmd, cmdp) != 0x00) + { + switch(param_getchar(Cmd, cmdp)) + { + case 'h': + return usage_lf_config(); + case 'H': + divisor = 88; + cmdp++; + break; + case 'L': + divisor = 95; + cmdp++; + break; + case 'q': + errors |= param_getdec(Cmd,cmdp+1,&divisor); + cmdp+=2; + break; + case 't': + errors |= param_getdec(Cmd,cmdp+1,&unsigned_trigg); + cmdp+=2; + if(!errors) trigger_threshold = unsigned_trigg; + break; + case 'b': + errors |= param_getdec(Cmd,cmdp+1,&bps); + cmdp+=2; + break; + case 'd': + errors |= param_getdec(Cmd,cmdp+1,&decimation); + cmdp+=2; + break; + case 'a': + averaging = param_getchar(Cmd,cmdp+1) == '1'; + cmdp+=2; + break; + default: + PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp)); + errors = 1; + break; + } + if(errors) break; + } + if(cmdp == 0) + { + errors = 1;// No args + } + + //Validations + if(errors) + { + return usage_lf_config(); + } + //Bps is limited to 8, so fits in lower half of arg1 + if(bps >> 8) bps = 8; + + sample_config config = { + decimation,bps,averaging,divisor,trigger_threshold + }; + //Averaging is a flag on high-bit of arg[1] + UsbCommand c = {CMD_SET_LF_SAMPLING_CONFIG}; + memcpy(c.d.asBytes,&config,sizeof(sample_config)); + SendCommand(&c); + return 0; +} + int CmdLFRead(const char *Cmd) { - UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K}; - // 'h' means higher-low-frequency, 134 kHz - if(*Cmd == 'h') { - c.arg[0] = 1; - } else if (*Cmd == '\0') { - c.arg[0] = 0; - } else if (sscanf(Cmd, "%"lli, &c.arg[0]) != 1) { - PrintAndLog("use 'read' or 'read h', or 'read '"); - return 0; - } - SendCommand(&c); - WaitForResponse(CMD_ACK,NULL); - return 0; + + uint8_t cmdp =0; + if(param_getchar(Cmd, cmdp) == 'h') + { + return usage_lf_read(); + } + //And ship it to device + UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K}; + SendCommand(&c); + WaitForResponse(CMD_ACK,NULL); + return 0; +} + +int CmdLFSnoop(const char *Cmd) +{ + uint8_t cmdp =0; + if(param_getchar(Cmd, cmdp) == 'h') + { + return usage_lf_snoop(); + } + + UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES}; + SendCommand(&c); + WaitForResponse(CMD_ACK,NULL); + return 0; } static void ChkBitstream(const char *str) @@ -377,19 +511,17 @@ static void ChkBitstream(const char *str) int i; /* convert to bitstream if necessary */ - for (i = 0; i < (int)(GraphTraceLen / 2); i++) - { - if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0) - { + for (i = 0; i < (int)(GraphTraceLen / 2); i++){ + if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0) { CmdBitstream(str); break; } } } - +//appears to attempt to simulate manchester int CmdLFSim(const char *Cmd) { - int i; + int i,j; static int gap; sscanf(Cmd, "%i", &gap); @@ -397,18 +529,20 @@ int CmdLFSim(const char *Cmd) /* convert to bitstream if necessary */ ChkBitstream(Cmd); - PrintAndLog("Sending data, please wait..."); - for (i = 0; i < GraphTraceLen; i += 48) { + printf("Sending [%d bytes]", GraphTraceLen); + for (i = 0; i < GraphTraceLen; i += USB_CMD_DATA_SIZE) { UsbCommand c={CMD_DOWNLOADED_SIM_SAMPLES_125K, {i, 0, 0}}; - int j; - for (j = 0; j < 48; j++) { + + for (j = 0; j < USB_CMD_DATA_SIZE; j++) { c.d.asBytes[j] = GraphBuffer[i+j]; } SendCommand(&c); WaitForResponse(CMD_ACK,NULL); + printf("."); } - PrintAndLog("Starting simulator..."); + printf("\n"); + PrintAndLog("Starting to simulate"); UsbCommand c = {CMD_SIMULATE_TAG_125K, {GraphTraceLen, gap, 0}}; SendCommand(&c); return 0; @@ -416,7 +550,9 @@ int CmdLFSim(const char *Cmd) int CmdLFSimBidir(const char *Cmd) { - /* Set ADC to twice the carrier for a slight supersampling */ + // Set ADC to twice the carrier for a slight supersampling + // HACK: not implemented in ARMSRC. + PrintAndLog("Not implemented yet."); UsbCommand c = {CMD_LF_SIMULATE_BIDIR, {47, 384, 0}}; SendCommand(&c); return 0; @@ -428,49 +564,22 @@ int CmdLFSimManchester(const char *Cmd) static int clock, gap; static char data[1024], gapstring[8]; - /* get settings/bits */ sscanf(Cmd, "%i %s %i", &clock, &data[0], &gap); - /* clear our graph */ ClearGraph(0); - /* fill it with our bitstream */ for (int i = 0; i < strlen(data) ; ++i) AppendGraph(0, clock, data[i]- '0'); - /* modulate */ CmdManchesterMod(""); - /* show what we've done */ RepaintGraphWindow(); - /* simulate */ sprintf(&gapstring[0], "%i", gap); CmdLFSim(gapstring); return 0; } -int CmdLFSnoop(const char *Cmd) -{ - UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES}; - // 'h' means higher-low-frequency, 134 kHz - c.arg[0] = 0; - c.arg[1] = -1; - if (*Cmd == 0) { - // empty - } else if (*Cmd == 'l') { - sscanf(Cmd, "l %"lli, &c.arg[1]); - } else if(*Cmd == 'h') { - c.arg[0] = 1; - sscanf(Cmd, "h %"lli, &c.arg[1]); - } else if (sscanf(Cmd, "%"lli" %"lli, &c.arg[0], &c.arg[1]) < 1) { - PrintAndLog("use 'snoop' or 'snoop {l,h} [trigger threshold]', or 'snoop [trigger threshold]'"); - return 0; - } - SendCommand(&c); - WaitForResponse(CMD_ACK,NULL); - return 0; -} int CmdVchDemod(const char *Cmd) { @@ -548,17 +657,114 @@ int CmdVchDemod(const char *Cmd) return 0; } +//by marshmellow +int CmdLFfind(const char *Cmd) +{ + int ans=0; + char cmdp = param_getchar(Cmd, 0); + char testRaw = param_getchar(Cmd, 1); + if (strlen(Cmd) > 2 || cmdp == 'h' || cmdp == 'H') { + PrintAndLog("Usage: lf search <0|1> [u]"); + PrintAndLog(" , if not set, try reading data from tag."); + PrintAndLog(" [Search for Unknown tags] , if not set, reads only known tags."); + PrintAndLog(""); + PrintAndLog(" sample: lf search = try reading data from tag & search for known tags"); + PrintAndLog(" : lf search 1 = use data from GraphBuffer & search for known tags"); + PrintAndLog(" : lf search u = try reading data from tag & search for known and unknown tags"); + PrintAndLog(" : lf search 1 u = use data from GraphBuffer & search for known and unknown tags"); + + return 0; + } + + if (!offline && (cmdp != '1')){ + ans=CmdLFRead(""); + ans=CmdSamples("20000"); + } else if (GraphTraceLen < 1000) { + PrintAndLog("Data in Graphbuffer was too small."); + return 0; + } + if (cmdp == 'u' || cmdp == 'U') testRaw = 'u'; + PrintAndLog("NOTE: some demods output possible binary\n if it finds something that looks like a tag"); + PrintAndLog("False Positives ARE possible\n"); + PrintAndLog("\nChecking for known tags:\n"); + ans=CmdFSKdemodIO(""); + if (ans>0) { + PrintAndLog("\nValid IO Prox ID Found!"); + return 1; + } + ans=CmdFSKdemodPyramid(""); + if (ans>0) { + PrintAndLog("\nValid Pyramid ID Found!"); + return 1; + } + ans=CmdFSKdemodParadox(""); + if (ans>0) { + PrintAndLog("\nValid Paradox ID Found!"); + return 1; + } + ans=CmdFSKdemodAWID(""); + if (ans>0) { + PrintAndLog("\nValid AWID ID Found!"); + return 1; + } + ans=CmdFSKdemodHID(""); + if (ans>0) { + PrintAndLog("\nValid HID Prox ID Found!"); + return 1; + } + //add psk and indala + ans=CmdIndalaDecode(""); + if (ans>0) { + PrintAndLog("\nValid Indala ID Found!"); + return 1; + } + ans=CmdAskEM410xDemod(""); + if (ans>0) { + PrintAndLog("\nValid EM410x ID Found!"); + return 1; + } + PrintAndLog("\nNo Known Tags Found!\n"); + if (testRaw=='u' || testRaw=='U'){ + //test unknown tag formats (raw mode) + PrintAndLog("\nChecking for Unknown tags:\n"); + ans=CmdDetectClockRate("f"); + if (ans != 0){ //fsk + ans=CmdFSKrawdemod(""); + if (ans>0) { + PrintAndLog("\nUnknown FSK Modulated Tag Found!"); + return 1; + } + } + ans=Cmdaskmandemod(""); + if (ans>0) { + PrintAndLog("\nUnknown ASK Modulated and Manchester encoded Tag Found!"); + return 1; + } + ans=CmdPSK1rawDemod(""); + if (ans>0) { + PrintAndLog("Possible unknown PSK1 Modulated Tag Found above!\n\nCould also be PSK2 - try 'data psk2rawdemod'"); + PrintAndLog("\nCould also be PSK3 - [currently not supported]"); + PrintAndLog("\nCould also be NRZ - try 'data nrzrawdemod"); + return 1; + } + PrintAndLog("\nNo Data Found!\n"); + } + return 0; +} + static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, {"cmdread", CmdLFCommandRead, 0, " <'0' period> <'1' period> ['h'] -- Modulate LF reader field to send command before read (all periods in microseconds) (option 'h' for 134)"}, {"em4x", CmdLFEM4X, 1, "{ EM4X RFIDs... }"}, + {"config", CmdLFSetConfig, 0, "Set config for LF sampling, bit/sample, decimation, frequency"}, {"flexdemod", CmdFlexdemod, 1, "Demodulate samples for FlexPass"}, {"hid", CmdLFHID, 1, "{ HID RFIDs... }"}, {"io", CmdLFIO, 1, "{ ioProx tags... }"}, {"indalademod", CmdIndalaDemod, 1, "['224'] -- Demodulate samples for Indala 64 bit UID (option '224' for 224 bit)"}, {"indalaclone", CmdIndalaClone, 0, " ['l']-- Clone Indala to T55x7 (tag must be in antenna)(UID in HEX)(option 'l' for 224 UID"}, - {"read", CmdLFRead, 0, "['h' or ] -- Read 125/134 kHz LF ID-only tag (option 'h' for 134, alternatively: f=12MHz/(divisor+1))"}, + {"read", CmdLFRead, 0, "Read 125/134 kHz LF ID-only tag. Do 'lf read h' for help"}, + {"search", CmdLFfind, 1, "[offline] ['u'] Read and Search for valid known tag (in offline mode it you can load first then search) - 'u' to search for unknown tags"}, {"sim", CmdLFSim, 0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"}, {"simbidir", CmdLFSimBidir, 0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"}, {"simman", CmdLFSimManchester, 0, " [GAP] Simulate arbitrary Manchester LF tag"},