X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/fef74fdce43605f1710319b2b6e45969a5c62835..8c6b22980cac809f51cdb307a2043b380659fe9c:/client/cmddata.c?ds=inline diff --git a/client/cmddata.c b/client/cmddata.c index a8c809cf..22da1805 100644 --- a/client/cmddata.c +++ b/client/cmddata.c @@ -23,10 +23,12 @@ #include "lfdemod.h" #include "usb_cmd.h" #include "crc.h" +#include "crc16.h" +#include "loclass/cipherutils.h" uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN]; -uint8_t g_debugMode; -int DemodBufferLen; +uint8_t g_debugMode=0; +size_t DemodBufferLen=0; static int CmdHelp(const char *Cmd); //set the demod buffer with given array of binary (one bit per byte) @@ -55,6 +57,15 @@ int CmdSetDebugMode(const char *Cmd) return 1; } +int usage_data_printdemodbuf(){ + PrintAndLog("Usage: data printdemodbuffer x o "); + PrintAndLog("Options: "); + PrintAndLog(" h This help"); + PrintAndLog(" x output in hex (omit for binary output)"); + PrintAndLog(" o enter offset in # of bits"); + return 0; +} + //by marshmellow void printDemodBuff(void) { @@ -73,23 +84,50 @@ void printDemodBuff(void) int CmdPrintDemodBuff(const char *Cmd) { - char hex; - char printBuff[512]={0x00}; - uint8_t numBits = DemodBufferLen & 0xFFFC; - sscanf(Cmd, "%c", &hex); - if (hex == 'h'){ - PrintAndLog("Usage: data printdemodbuffer [x]"); - PrintAndLog("Options: "); - PrintAndLog(" h This help"); - PrintAndLog(" x output in hex (omit for binary output)"); - return 0; + char hex[512]={0x00}; + bool hexMode = false; + bool errors = false; + uint8_t offset = 0; + char cmdp = 0; + while(param_getchar(Cmd, cmdp) != 0x00) + { + switch(param_getchar(Cmd, cmdp)) + { + case 'h': + case 'H': + return usage_data_printdemodbuf(); + case 'x': + case 'X': + hexMode = true; + cmdp++; + break; + case 'o': + case 'O': + offset = param_get8(Cmd, cmdp+1); + if (!offset) errors = true; + cmdp += 2; + break; + default: + PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp)); + errors = true; + break; + } + if(errors) break; } - if (hex == 'x'){ - numBits = binarraytohex(printBuff, (char *)DemodBuffer, numBits); + //Validations + if(errors) return usage_data_printdemodbuf(); + + int numBits = (DemodBufferLen-offset) & 0x7FC; //make sure we don't exceed our string + + if (hexMode){ + char *buf = (char *) (DemodBuffer + offset); + numBits = binarraytohex(hex, buf, numBits); if (numBits==0) return 0; - PrintAndLog("DemodBuffer: %s",printBuff); + PrintAndLog("DemodBuffer: %s",hex); } else { - printDemodBuff(); + //setDemodBuf(DemodBuffer, DemodBufferLen-offset, offset); + char *bin = sprint_bin_break(DemodBuffer+offset,numBits,16); + PrintAndLog("DemodBuffer:\n%s",bin); } return 1; } @@ -307,8 +345,8 @@ int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) setDemodBuf(BitStream,BitLen,0); if (verbose || g_debugMode){ if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt); - if (askType) PrintAndLog("ASK/Manchester decoded bitstream:"); - else PrintAndLog("ASK/Raw decoded bitstream:"); + if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk); + else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk); // Now output the bitstream to the scrollback by line of 16 bits printDemodBuff(); @@ -355,7 +393,7 @@ int Cmdmandecoderaw(const char *Cmd) int errCnt=0; size_t size=0; int invert=0; - size_t maxErr = 20; + int maxErr = 20; char cmdp = param_getchar(Cmd, 0); if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') { PrintAndLog("Usage: data manrawdecode [invert] [maxErr]"); @@ -461,22 +499,20 @@ int CmdBiphaseDecodeRaw(const char *Cmd) int ASKbiphaseDemod(const char *Cmd, bool verbose) { //ask raw demod GraphBuffer first - int offset=0, clk=0, invert=0, maxErr=0, ans=0; - ans = sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr); - if (ans>0) - ans = ASKDemod(Cmd+1, FALSE, FALSE, 0); - else - ans = ASKDemod(Cmd, FALSE, FALSE, 0); - if (!ans) { - if (g_debugMode || verbose) PrintAndLog("Error AskDemod: %d", ans); - return 0; - } + int offset=0, clk=0, invert=0, maxErr=0; + sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr); + + uint8_t BitStream[MAX_DEMOD_BUF_LEN]; + size_t size = getFromGraphBuf(BitStream); + //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer + int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0); + if ( errCnt < 0 || errCnt > maxErr ) { + if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk); + return 0; + } - //attempt to Biphase decode DemodBuffer - size_t size = DemodBufferLen; - uint8_t BitStream[MAX_DEMOD_BUF_LEN]; - memcpy(BitStream, DemodBuffer, DemodBufferLen); - int errCnt = BiphaseRawDecode(BitStream, &size, offset, 0); + //attempt to Biphase decode BitStream + errCnt = BiphaseRawDecode(BitStream, &size, offset, invert); if (errCnt < 0){ if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt); return 0; @@ -488,7 +524,7 @@ int ASKbiphaseDemod(const char *Cmd, bool verbose) //success set DemodBuffer and return setDemodBuf(BitStream, size, 0); if (g_debugMode || verbose){ - PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt); + PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt); printDemodBuff(); } return 1; @@ -1421,6 +1457,83 @@ int CmdFSKdemodPyramid(const char *Cmd) return 1; } +// FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits) +// 8 databits + 1 parity (1) +// CIITT 16 chksum +// NATIONAL CODE, ICAR database +// COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf +// FLAG (animal/non-animal) +int CmdFDXBdemodBI(const char *Cmd){ + + int invert = 1; + int clk = 32; + int errCnt = 0; + int maxErr = 0; + uint8_t BitStream[MAX_DEMOD_BUF_LEN]; + size_t size = getFromGraphBuf(BitStream); + + errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0); + if ( errCnt < 0 || errCnt > maxErr ) { + if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk); + return 0; + } + + errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1); + if (errCnt < 0 || errCnt > maxErr ) { + if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt); + return 0; + } + + int preambleIndex = FDXBdemodBI(BitStream, &size); + if (preambleIndex < 0){ + if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex); + return 0; + } + + setDemodBuf(BitStream, 128, preambleIndex); + + // remove marker bits (1's every 9th digit after preamble) (pType = 2) + size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117); + if ( size != 104 ) { + if (g_debugMode) PrintAndLog("Error removeParity:: %d", size); + return 0; + } + if (g_debugMode) { + char *bin = sprint_bin_break(BitStream,size,16); + PrintAndLog("DEBUG BinStream:\n%s",bin); + } + PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:"); + if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size); + + //got a good demod + uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32); + uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10); + uint8_t dataBlockBit = BitStream[48]; + uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14); + uint8_t animalBit = BitStream[63]; + uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16); + uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24); + + uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32); + uint8_t raw[8]; + num_to_bytes(rawid, 8, raw); + + if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8)); + + uint16_t calcCrc = crc16_ccitt_kermit(raw, 8); + PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode); + PrintAndLog("National Code: %012llu", NationalCode); + PrintAndLog("CountryCode: %04u", countryCode); + PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False"); + PrintAndLog("reserved Code: %u", reservedCode); + PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False"); + PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed"); + PrintAndLog("Extended: 0x%X\n", extended); + + return 1; +} + + //by marshmellow //attempt to psk1 demod graph buffer int PSKDemod(const char *Cmd, bool verbose) @@ -1434,12 +1547,12 @@ int PSKDemod(const char *Cmd, bool verbose) clk=0; } if (invert != 0 && invert != 1) { - if (verbose) PrintAndLog("Invalid argument: %s", Cmd); + if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd); return 0; } uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; size_t BitLen = getFromGraphBuf(BitStream); - if (BitLen==0) return -1; + if (BitLen==0) return 0; uint8_t carrier=countFC(BitStream, BitLen, 0); if (carrier!=2 && carrier!=4 && carrier!=8){ //invalid carrier @@ -1484,7 +1597,7 @@ int CmdIndalaDecode(const char *Cmd) return 0; } uint8_t invert=0; - ans = indala26decode(DemodBuffer,(size_t *) &DemodBufferLen, &invert); + ans = indala26decode(DemodBuffer, &DemodBufferLen, &invert); if (ans < 1) { if (g_debugMode==1) PrintAndLog("Error2: %d",ans); @@ -1547,11 +1660,49 @@ int CmdIndalaDecode(const char *Cmd) return 1; } +int CmdPSKNexWatch(const char *Cmd) +{ + if (!PSKDemod("", false)) return 0; + uint8_t preamble[28] = {0,0,0,0,0,1,0,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; + size_t startIdx = 0, size = DemodBufferLen; + bool invert = false; + if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){ + // if didn't find preamble try again inverting + if (!PSKDemod("1", false)) return 0; + size = DemodBufferLen; + if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0; + invert = true; + } + if (size != 128) return 0; + setDemodBuf(DemodBuffer, size, startIdx+4); + startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0) + //get ID + uint32_t ID = 0; + for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){ + for (uint8_t idx=0; idx<8; idx++){ + ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)]; + } + } + //parity check (TBD) + + //checksum check (TBD) + + //output + PrintAndLog("NexWatch ID: %d", ID); + if (invert){ + PrintAndLog("Had to Invert - probably NexKey"); + for (uint8_t idx=0; idxposition >> 3; // divide by 8 - int bitpos = (stream->position++) & 7; // mask out 00000111 - return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1; -} -uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b) +uint8_t getByte(uint8_t bits_per_sample, BitstreamIn* b) { int i; uint8_t val = 0; for(i =0 ; i < bits_per_sample; i++) { - val |= (_headBit(b) << (7-i)); + val |= (headBit(b) << (7-i)); } return val; } @@ -1852,9 +1991,9 @@ int getSamples(const char *Cmd, bool silent) if(bits_per_sample < 8) { PrintAndLog("Unpacking..."); - BitstreamOut bout = { got, bits_per_sample * n, 0}; + BitstreamIn bout = { got, bits_per_sample * n, 0}; int j =0; - for (j = 0; j * bits_per_sample < n * 8 && j < sizeof(GraphBuffer); j++) { + for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) { uint8_t sample = getByte(bits_per_sample, &bout); GraphBuffer[j] = ((int) sample )- 128; } @@ -2115,6 +2254,99 @@ int CmdZerocrossings(const char *Cmd) return 0; } +int usage_data_bin2hex(){ + PrintAndLog("Usage: data bin2hex "); + PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)"); + return 0; +} + +/** + * @brief Utility for conversion via cmdline. + * @param Cmd + * @return + */ +int Cmdbin2hex(const char *Cmd) +{ + int bg =0, en =0; + if(param_getptr(Cmd, &bg, &en, 0)) + { + return usage_data_bin2hex(); + } + //Number of digits supplied as argument + size_t length = en - bg +1; + size_t bytelen = (length+7) / 8; + uint8_t* arr = (uint8_t *) malloc(bytelen); + memset(arr, 0, bytelen); + BitstreamOut bout = { arr, 0, 0 }; + + for(; bg <= en ;bg++) + { + char c = Cmd[bg]; + if( c == '1') pushBit(&bout, 1); + else if( c == '0') pushBit(&bout, 0); + else PrintAndLog("Ignoring '%c'", c); + } + + if(bout.numbits % 8 != 0) + { + printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8)); + } + + //Uses printf instead of PrintAndLog since the latter + // adds linebreaks to each printout - this way was more convenient since we don't have to + // allocate a string and write to that first... + for(size_t x = 0; x < bytelen ; x++) + { + printf("%02X", arr[x]); + } + printf("\n"); + free(arr); + return 0; +} + +int usage_data_hex2bin(){ + + PrintAndLog("Usage: data bin2hex "); + PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)"); + return 0; + +} + +int Cmdhex2bin(const char *Cmd) +{ + int bg =0, en =0; + if(param_getptr(Cmd, &bg, &en, 0)) + { + return usage_data_hex2bin(); + } + + + while(bg <= en ) + { + char x = Cmd[bg++]; + // capitalize + if (x >= 'a' && x <= 'f') + x -= 32; + // convert to numeric value + if (x >= '0' && x <= '9') + x -= '0'; + else if (x >= 'A' && x <= 'F') + x -= 'A' - 10; + else + continue; + + //Uses printf instead of PrintAndLog since the latter + // adds linebreaks to each printout - this way was more convenient since we don't have to + // allocate a string and write to that first... + + for(int i= 0 ; i < 4 ; ++i) + printf("%d",(x >> (3 - i)) & 1); + } + printf("\n"); + + return 0; +} + static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, @@ -2123,10 +2355,12 @@ static command_t CommandTable[] = {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"}, {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"}, {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"}, + {"bin2hex", Cmdbin2hex, 1, "bin2hex -- Converts binary to hexadecimal"}, {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"}, {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"}, {"dec", CmdDec, 1, "Decimate samples"}, {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"}, + {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"}, {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"}, //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"}, {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"}, @@ -2136,6 +2370,7 @@ static command_t CommandTable[] = {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"}, {"grid", CmdGrid, 1, " -- overlay grid on graph window, use zero value to turn off either"}, {"hexsamples", CmdHexsamples, 0, " [] -- Dump big buffer as hex bytes"}, + {"hex2bin", Cmdhex2bin, 1, "hex2bin -- Converts hexadecimal to binary"}, {"hide", CmdHide, 1, "Hide graph window"}, {"hpf", CmdHpf, 1, "Remove DC offset from trace"}, {"load", CmdLoad, 1, " -- Load trace (to graph window"}, @@ -2144,8 +2379,9 @@ static command_t CommandTable[] = {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"}, {"norm", CmdNorm, 1, "Normalize max/min to +/-128"}, {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"}, - {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] -- print the data in the DemodBuffer - 'x' for hex output"}, + {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] -- print the data in the DemodBuffer - 'x' for hex output"}, {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"}, + {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"}, {"rawdemod", CmdRawDemod, 1, "[modulation] ... -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"}, {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"}, {"save", CmdSave, 1, " -- Save trace (from graph window)"},