X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/7c5f70dd9f8805967628f429f96fe1159a8bb827..64d1b4efc932898dc250dbc5d8f7418e3643b27b:/client/cmdlf.c diff --git a/client/cmdlf.c b/client/cmdlf.c index 8257a5b3..07a8750f 100644 --- a/client/cmdlf.c +++ b/client/cmdlf.c @@ -19,8 +19,8 @@ #include "cmdparser.h" #include "cmdmain.h" #include "cmddata.h" +#include "util.h" #include "cmdlf.h" -#include "cmdlfawid26.h" #include "cmdlfhid.h" #include "cmdlfti.h" #include "cmdlfem4x.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)) { @@ -171,10 +168,14 @@ int CmdIndalaDemod(const char *Cmd) count = 0; } } + 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; + 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; if (strcmp(Cmd, "224") == 0) { @@ -184,6 +185,7 @@ int CmdIndalaDemod(const char *Cmd) uidlen = 64; long_wait = 29; } + int start; int first = 0; for (start = 0; start <= rawbit - uidlen; start++) { @@ -197,6 +199,7 @@ int CmdIndalaDemod(const char *Cmd) break; } } + if (start == rawbit - uidlen + 1) { PrintAndLog("nothing to wait for"); return 0; @@ -210,12 +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++) { @@ -237,8 +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') { @@ -252,11 +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); @@ -264,15 +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; @@ -284,9 +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; @@ -309,15 +316,10 @@ int CmdIndalaDemod(const char *Cmd) 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) { @@ -339,9 +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); @@ -359,22 +359,20 @@ int CmdIndalaClone(const char *Cmd) 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("Samples 1: 'lf read'"); - PrintAndLog(" 2: 'lf read h'"); - PrintAndLog(" 3: 'lf read '"); + PrintAndLog("Samples 1: 'lf read'"); + PrintAndLog(" 2: 'lf read h'"); + PrintAndLog(" 3: 'lf read '"); return 0; } SendCommand(&c); WaitForResponse(CMD_ACK,NULL); - - // load samples - CmdSamples(""); return 0; } @@ -383,20 +381,17 @@ 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,j; - + int i,j; static int gap; sscanf(Cmd, "%i", &gap); @@ -404,19 +399,20 @@ int CmdLFSim(const char *Cmd) /* convert to bitstream if necessary */ ChkBitstream(Cmd); - printf("Sending [%d bytes]", GraphTraceLen); - for (i = 0; i < GraphTraceLen; i += USB_CMD_DATA_SIZE) { + 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}}; - for (j = 0; j < USB_CMD_DATA_SIZE; j++) { + for (j = 0; j < USB_CMD_DATA_SIZE; j++) { c.d.asBytes[j] = GraphBuffer[i+j]; } SendCommand(&c); WaitForResponse(CMD_ACK,NULL); - printf("."); + printf("."); } - printf("\n"); - PrintAndLog("Starting to simulate"); + + printf("\n"); + PrintAndLog("Starting to simulate"); UsbCommand c = {CMD_SIMULATE_TAG_125K, {GraphTraceLen, gap, 0}}; SendCommand(&c); return 0; @@ -424,7 +420,9 @@ 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; @@ -436,23 +434,17 @@ 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; @@ -461,34 +453,28 @@ int CmdLFSimManchester(const char *Cmd) 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') { + + 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]'"); + PrintAndLog("usage 1: snoop"); + PrintAndLog(" 2: snoop [trigger threshold]"); + PrintAndLog(" 3: snoop [trigger threshold]"); + PrintAndLog(""); + PrintAndLog("Sample: lf snoop l 200"); + PrintAndLog(" : lf snoop 95 200"); return 0; } + SendCommand(&c); WaitForResponse(CMD_ACK,NULL); - - size_t BUFF_SIZE = 8000; - uint8_t data[BUFF_SIZE]; - - GetFromBigBuf(data,BUFF_SIZE,3560); //3560 -- should be offset.. - WaitForResponseTimeout(CMD_ACK,NULL, 1500); - - for (int j = 0; j < BUFF_SIZE; j++) { - GraphBuffer[j] = ((int)data[j]); - } - GraphTraceLen = BUFF_SIZE; - return 0; } @@ -571,75 +557,89 @@ int CmdVchDemod(const char *Cmd) //by marshmellow int CmdLFfind(const char *Cmd) { - int ans = 0; + int ans=0; char cmdp = param_getchar(Cmd, 0); if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') { - PrintAndLog("Usage: lf search [use data from Graphbuffer]"); - PrintAndLog(" [use data from Graphbuffer], if not set, try reading data from tag."); + PrintAndLog("Usage: lf search <0|1>"); + PrintAndLog(" , if not set, try reading data from tag."); PrintAndLog(""); PrintAndLog(" sample: lf search"); PrintAndLog(" : lf search 1"); return 0; } - if (!offline || (cmdp != '1') ){ - ans = CmdLFRead(""); - } else if (GraphTraceLen<1000) { + if (!offline && (cmdp != '1')){ + ans=CmdLFRead(""); + ans=CmdSamples("20000"); + } else if (GraphTraceLen < 1000) { PrintAndLog("Data in Graphbuffer was too small."); return 0; - } - - PrintAndLog("Checking for known tags:"); - - ans=Cmdaskmandemod(""); - PrintAndLog("ASK_MAN: %s", (ans)?"YES":"NO" ); - - ans=CmdFSKdemodHID(""); - PrintAndLog("HID: %s", (ans)?"YES":"NO" ); - - ans=CmdFSKdemodIO(""); - PrintAndLog("IO prox: %s", (ans)?"YES":"NO" ); - - ans=CmdIndalaDemod(""); - PrintAndLog("Indala (64): %s", (ans)?"YES":"NO" ); - - ans=CmdIndalaDemod("224"); - PrintAndLog("Indala (224): %s", (ans)?"YES":"NO" ); + } - if (!ans) - PrintAndLog("No Known Tags Found!\n"); - - return 0; + PrintAndLog("NOTE: some demods output possible binary\n if it finds something that looks like a tag"); + 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=Cmdaskmandemod(""); + if (ans>0) { + PrintAndLog("\nValid EM410x ID Found!"); + return 1; + } + PrintAndLog("No Known Tags 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... }"}, {"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 (UID in HEX)(option 'l' for 224 UID"}, - {"vchdemod", CmdVchDemod, 1, "['clone'] -- Demodulate samples for VeriChip"}, - - + {"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))"}, {"search", CmdLFfind, 1, "Read and Search for valid known tag (in offline mode it you can load first then search)"}, {"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"}, {"snoop", CmdLFSnoop, 0, "['l'|'h'|] [trigger threshold]-- Snoop LF (l:125khz, h:134khz)"}, - - {"awid26", CmdLFAWID26, 1, "{ AWID26 tags }"}, - {"em4x", CmdLFEM4X, 1, "{ EM4X tags }"}, - {"hid", CmdLFHID, 1, "{ HID tags }"}, - {"hitag", CmdLFHitag, 1, "{ Hitag tags and transponders }"}, - {"io", CmdLFIO, 1, "{ ioProx tags }"}, - {"pcf7931", CmdLFPCF7931, 1, "{ PCF7931 tags }"}, - {"ti", CmdLFTI, 1, "{ TI tags }"}, - {"t55xx", CmdLFT55XX, 1, "{ T55xx tags }"}, - + {"ti", CmdLFTI, 1, "{ TI RFIDs... }"}, + {"hitag", CmdLFHitag, 1, "{ Hitag tags and transponders... }"}, + {"vchdemod", CmdVchDemod, 1, "['clone'] -- Demodulate samples for VeriChip"}, + {"t55xx", CmdLFT55XX, 1, "{ T55xx RFIDs... }"}, + {"pcf7931", CmdLFPCF7931, 1, "{PCF7931 RFIDs...}"}, {NULL, NULL, 0, NULL} };