X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/9e6dd4eb69c0a28cb693657927d907a3a1731c79..c3bfb9c76bf147c39d4d94bd41d20f2a20b310e8:/client/cmddata.c diff --git a/client/cmddata.c b/client/cmddata.c index be6e35d5..d05f3fa1 100644 --- a/client/cmddata.c +++ b/client/cmddata.c @@ -11,8 +11,6 @@ #include #include #include -#include - #include #include "proxmark3.h" #include "data.h" @@ -22,6 +20,7 @@ #include "util.h" #include "cmdmain.h" #include "cmddata.h" +#include "lfdemod.h" static int CmdHelp(const char *Cmd); @@ -90,6 +89,8 @@ int Cmdaskdemod(const char *Cmd) else if (GraphBuffer[i] < low) low = GraphBuffer[i]; } + high=abs(high*.75); + low=abs(low*.75); if (c != 0 && c != 1) { PrintAndLog("Invalid argument: %s", Cmd); return 0; @@ -123,39 +124,16 @@ int Cmdaskdemod(const char *Cmd) return 0; } -void printBitStream(int BitStream[], uint32_t bitLen){ - uint32_t i = 0; - if (bitLen<16) return; - if (bitLen>512) bitLen=512; - for (i = 0; i < (bitLen-16); i+=16) { - PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i", - BitStream[i], - BitStream[i+1], - BitStream[i+2], - BitStream[i+3], - BitStream[i+4], - BitStream[i+5], - BitStream[i+6], - BitStream[i+7], - BitStream[i+8], - BitStream[i+9], - BitStream[i+10], - BitStream[i+11], - BitStream[i+12], - BitStream[i+13], - BitStream[i+14], - BitStream[i+15]); - } - return; -} -void printBitStream2(uint8_t BitStream[], uint32_t bitLen){ +//by marshmellow +void printBitStream(uint8_t BitStream[], uint32_t bitLen) +{ uint32_t i = 0; if (bitLen<16) { PrintAndLog("Too few bits found: %d",bitLen); return; } if (bitLen>512) bitLen=512; - for (i = 0; i < (bitLen-16); i+=16) { + for (i = 0; i <= (bitLen-16); i+=16) { PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i", BitStream[i], BitStream[i+1], @@ -176,220 +154,213 @@ void printBitStream2(uint8_t BitStream[], uint32_t bitLen){ } return; } - //by marshmellow -//takes 1s and 0s and searches for EM410x format - output EM ID -int Em410xDecode(const char *Cmd) +void printEM410x(uint64_t id) { - //no arguments needed - built this way in case we want this to be a direct call from "data " cmds in the future - // otherwise could be a void with no arguments - //set defaults - int high=0, low=0; - uint64_t lo=0; //hi=0, - - uint32_t i = 0; - uint32_t initLoopMax = 1000; - if (initLoopMax>GraphTraceLen) initLoopMax=GraphTraceLen; - - for (;i < initLoopMax; ++i) //1000 samples should be plenty to find high and low values - { - if (GraphBuffer[i] > high) - high = GraphBuffer[i]; - else if (GraphBuffer[i] < low) - low = GraphBuffer[i]; - } - if (((high !=1)||(low !=0))){ //allow only 1s and 0s - PrintAndLog("no data found"); - return 0; - } - uint8_t parityTest=0; - // 111111111 bit pattern represent start of frame - int frame_marker_mask[] = {1,1,1,1,1,1,1,1,1}; - uint32_t idx = 0; - uint32_t ii=0; - uint8_t resetCnt = 0; - while( (idx + 64) < GraphTraceLen) { -restart: - // search for a start of frame marker - if ( memcmp(GraphBuffer+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0) - { // frame marker found - idx+=9;//sizeof(frame_marker_mask); - for (i=0; i<10;i++){ - for(ii=0; ii<5; ++ii){ - parityTest += GraphBuffer[(i*5)+ii+idx]; - } - if (parityTest== ((parityTest>>1)<<1)){ - parityTest=0; - for (ii=0; ii<4;++ii){ - //hi = (hi<<1)|(lo>>31); - lo=(lo<<1LL)|(GraphBuffer[(i*5)+ii+idx]); - } - //PrintAndLog("DEBUG: EM parity passed parity val: %d, i:%d, ii:%d,idx:%d, Buffer: %d%d%d%d%d,lo: %d",parityTest,i,ii,idx,GraphBuffer[idx+ii+(i*5)-5],GraphBuffer[idx+ii+(i*5)-4],GraphBuffer[idx+ii+(i*5)-3],GraphBuffer[idx+ii+(i*5)-2],GraphBuffer[idx+ii+(i*5)-1],lo); - }else {//parity failed - //PrintAndLog("DEBUG: EM parity failed parity val: %d, i:%d, ii:%d,idx:%d, Buffer: %d%d%d%d%d",parityTest,i,ii,idx,GraphBuffer[idx+ii+(i*5)-5],GraphBuffer[idx+ii+(i*5)-4],GraphBuffer[idx+ii+(i*5)-3],GraphBuffer[idx+ii+(i*5)-2],GraphBuffer[idx+ii+(i*5)-1]); - parityTest=0; - idx-=8; - if (resetCnt>5)return 0; - resetCnt++; - goto restart;//continue; - } - } - //skip last 5 bit parity test for simplicity. - - //get Unique ID + if (id !=0){ uint64_t iii=1; uint64_t id2lo=0; //id2hi=0, - //for (i=0;i<8;i++){ //for uint32 instead of uint64 - // id2hi=(id2hi<<1)|((hi & (iii<<(i)))>>i); - //} + uint32_t ii=0; + uint32_t i=0; for (ii=5; ii>0;ii--){ for (i=0;i<8;i++){ - id2lo=(id2lo<<1LL)|((lo & (iii<<(i+((ii-1)*8))))>>(i+((ii-1)*8))); + id2lo=(id2lo<<1LL)|((id & (iii<<(i+((ii-1)*8))))>>(i+((ii-1)*8))); } } //output em id - PrintAndLog("EM TAG ID : %010llx", lo); + PrintAndLog("EM TAG ID : %010llx", id); PrintAndLog("Unique TAG ID: %010llx", id2lo); //id2hi, - PrintAndLog("DEZ 8 : %08lld",lo & 0xFFFFFF); - PrintAndLog("DEZ 10 : %010lld",lo & 0xFFFFFF); - PrintAndLog("DEZ 5.5 : %05lld.%05lld",(lo>>16LL) & 0xFFFF,(lo & 0xFFFF)); - PrintAndLog("DEZ 3.5A : %03lld.%05lld",(lo>>32ll),(lo & 0xFFFF)); - PrintAndLog("DEZ 14/IK2 : %014lld",lo); + PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF); + PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFF); + PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF)); + PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF)); + PrintAndLog("DEZ 14/IK2 : %014lld",id); PrintAndLog("DEZ 15/IK3 : %015lld",id2lo); - PrintAndLog("Other : %05lld_%03lld_%08lld",(lo&0xFFFF),((lo>>16LL) & 0xFF),(lo & 0xFFFFFF)); - return 0; - }else{ - idx++; - } - } + PrintAndLog("Other : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF)); + } + return; +} + +//by marshmellow +int CmdEm410xDecode(const char *Cmd) +{ + uint64_t id=0; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + uint32_t i=0; + i=getFromGraphBuf(BitStream); + id = Em410xDecode(BitStream,i); + printEM410x(id); + if (id>0) return 1; return 0; } //by marshmellow -//takes 2 arguments - clock and invert both as integers +//takes 2 arguments - clock and invert both as integers +//attempts to demodulate ask while decoding manchester //prints binary found and saves in graphbuffer for further commands int Cmdaskmandemod(const char *Cmd) { - uint32_t i; - int invert=0; //invert default - int high = 0, low = 0; - int clk=DetectClock(0); //clock default - uint8_t BitStream[MAX_GRAPH_TRACE_LEN] = {0}; - + int invert=0; + int clk=0; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; sscanf(Cmd, "%i %i", &clk, &invert); - if (clk<8) clk =64; - if (clk<32) clk=32; if (invert != 0 && invert != 1) { PrintAndLog("Invalid argument: %s", Cmd); return 0; } - uint32_t initLoopMax = 1000; - if (initLoopMax>GraphTraceLen) initLoopMax=GraphTraceLen; - // Detect high and lows - PrintAndLog("Using Clock: %d and invert=%d",clk,invert); - for (i = 0; i < initLoopMax; ++i) //1000 samples should be plenty to find high and low values - { - if (GraphBuffer[i] > high) - high = GraphBuffer[i]; - else if (GraphBuffer[i] < low) - low = GraphBuffer[i]; + uint32_t BitLen = getFromGraphBuf(BitStream); + // PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen); + int errCnt=0; + errCnt = askmandemod(BitStream, &BitLen,&clk,&invert); + if (errCnt<0){ //if fatal error (or -1) + // PrintAndLog("no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk); + return 0; + } + if (BitLen<16) return 0; + PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk,invert,BitLen); + + //output + if (errCnt>0){ + PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); } - if ((high < 30) && ((high !=1)||(low !=-1))){ //throw away static - allow 1 and -1 (in case of threshold command first) - PrintAndLog("no data found"); + PrintAndLog("ASK/Manchester decoded bitstream:"); + // Now output the bitstream to the scrollback by line of 16 bits + printBitStream(BitStream,BitLen); + uint64_t lo =0; + lo = Em410xDecode(BitStream,BitLen); + if (lo>0){ + //set GraphBuffer for clone or sim command + setGraphBuf(BitStream,BitLen); + PrintAndLog("EM410x pattern found: "); + printEM410x(lo); + return 1; + } + //if (BitLen>16) return 1; + return 0; +} + +//by marshmellow +//manchester decode +//stricktly take 10 and 01 and convert to 0 and 1 +int Cmdmandecoderaw(const char *Cmd) +{ + int i =0; + int errCnt=0; + int bitnum=0; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + int high=0,low=0; + for (;ihigh) high=GraphBuffer[i]; + else if(GraphBuffer[i]1 || low <0 ){ + PrintAndLog("Error: please raw demod the wave first then mancheseter raw decode"); return 0; } - //13% fuzz in case highs and lows aren't clipped [marshmellow] - high=(int)(0.75*high); - low=(int)(0.75*low); - - //PrintAndLog("DEBUG - valid high: %d - valid low: %d",high,low); - int lastBit = 0; //set first clock check - uint32_t bitnum = 0; //output counter - uint8_t tol = 0; //clock tolerance adjust - waves will be accepted as within the clock if they fall + or - this value + clock from last valid wave - if (clk==32)tol=1; //clock tolerance may not be needed anymore currently set to + or - 1 but could be increased for poor waves or removed entirely - uint32_t iii = 0; - uint32_t gLen = GraphTraceLen; - if (gLen > 500) gLen=500; - uint8_t errCnt =0; - uint32_t bestStart = GraphTraceLen; - uint32_t bestErrCnt = (GraphTraceLen/1000); - //PrintAndLog("DEBUG - lastbit - %d",lastBit); - //loop to find first wave that works - for (iii=0; iii < gLen; ++iii){ - if ((GraphBuffer[iii]>=high)||(GraphBuffer[iii]<=low)){ - lastBit=iii-clk; - //loop through to see if this start location works - for (i = iii; i < GraphTraceLen; ++i) { - if ((GraphBuffer[i] >= high) && ((i-lastBit)>(clk-tol))){ - lastBit+=clk; - BitStream[bitnum] = invert; - bitnum++; - } else if ((GraphBuffer[i] <= low) && ((i-lastBit)>(clk-tol))){ - //low found and we are expecting a bar - lastBit+=clk; - BitStream[bitnum] = 1-invert; - bitnum++; - } else { - //mid value found or no bar supposed to be here - if ((i-lastBit)>(clk+tol)){ - //should have hit a high or low based on clock!! - - - //debug - //PrintAndLog("DEBUG - no wave in expected area - location: %d, expected: %d-%d, lastBit: %d - resetting search",i,(lastBit+(clk-((int)(tol)))),(lastBit+(clk+((int)(tol)))),lastBit); - if (bitnum > 0){ - BitStream[bitnum]=77; - bitnum++; - } - - - errCnt++; - lastBit+=clk;//skip over until hit too many errors - if (errCnt>((GraphTraceLen/1000))){ //allow 1 error for every 1000 samples else start over - errCnt=0; - bitnum=0;//start over - break; - } - } - } - } - //we got more than 64 good bits and not all errors - if ((bitnum > (64+errCnt)) && (errCnt<(GraphTraceLen/1000))) { - //possible good read - if (errCnt==0) break; //great read - finish - if (bestStart == iii) break; //if current run == bestErrCnt run (after exhausted testing) then finish - if (errCnt=gLen){ //exhausted test - //if there was a ok test go back to that one and re-run the best run (then dump after that run) - if (bestErrCnt < (GraphTraceLen/1000)) iii=bestStart; - } + bitnum=i; + errCnt=manrawdecode(BitStream,&bitnum); + if (errCnt>=20){ + PrintAndLog("Too many errors: %d",errCnt); + return 0; } - if (bitnum>16){ - - PrintAndLog("Data start pos:%d, lastBit:%d, stop pos:%d, numBits:%d",iii,lastBit,i,bitnum); - //move BitStream back to GraphBuffer + PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt); + printBitStream(BitStream,bitnum); + if (errCnt==0){ + //put back in graphbuffer ClearGraph(0); - for (i=0; i < bitnum; ++i){ + for (i=0; i0){ - PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); - } - PrintAndLog("ASK decoded bitstream:"); - // Now output the bitstream to the scrollback by line of 16 bits - printBitStream2(BitStream,bitnum); - Em410xDecode(Cmd); - } - return 0; + uint64_t id = 0; + id = Em410xDecode(BitStream,i); + printEM410x(id); + } + return 1; +} + +//by marshmellow +//biphase decode +//take 01 or 10 = 0 and 11 or 00 = 1 +//takes 1 argument "offset" default = 0 if 1 it will shift the decode by one bit +// since it is not like manchester and doesn't have an incorrect bit pattern we +// cannot determine if our decode is correct or if it should be shifted by one bit +// the argument offset allows us to manually shift if the output is incorrect +// (better would be to demod and decode at the same time so we can distinguish large +// width waves vs small width waves to help the decode positioning) or askbiphdemod +int CmdBiphaseDecodeRaw(const char *Cmd) +{ + int i = 0; + int errCnt=0; + int bitnum=0; + int offset=0; + int high=0, low=0; + sscanf(Cmd, "%i", &offset); + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + //get graphbuffer & high and low + for (;ihigh)high=GraphBuffer[i]; + else if(GraphBuffer[i]1 || low <0){ + PrintAndLog("Error: please raw demod the wave first then decode"); + return 0; + } + bitnum=i; + errCnt=BiphaseRawDecode(BitStream,&bitnum, offset); + if (errCnt>=20){ + PrintAndLog("Too many errors attempting to decode: %d",errCnt); + return 0; + } + PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt); + printBitStream(BitStream,bitnum); + PrintAndLog("\nif bitstream does not look right try offset=1"); + return 1; +} + + +//by marshmellow +//takes 2 arguments - clock and invert both as integers +//attempts to demodulate ask only +//prints binary found and saves in graphbuffer for further commands +int Cmdaskrawdemod(const char *Cmd) +{ + + int invert=0; + int clk=0; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + sscanf(Cmd, "%i %i", &clk, &invert); + if (invert != 0 && invert != 1) { + PrintAndLog("Invalid argument: %s", Cmd); + return 0; + } + int BitLen = getFromGraphBuf(BitStream); + int errCnt=0; + errCnt = askrawdemod(BitStream, &BitLen, &clk, &invert); + if (errCnt==-1){ //throw away static - allow 1 and -1 (in case of threshold command first) + PrintAndLog("no data found"); + return 0; + } + if (BitLen<16) return 0; + PrintAndLog("Using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen); + //PrintAndLog("Data start pos:%d, lastBit:%d, stop pos:%d, numBits:%d",iii,lastBit,i,bitnum); + //move BitStream back to GraphBuffer + setGraphBuf(BitStream, BitLen); + + if (errCnt>0){ + PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); + } + + PrintAndLog("ASK demoded bitstream:"); + + // Now output the bitstream to the scrollback by line of 16 bits + printBitStream(BitStream,BitLen); + + return 1; } int CmdAutoCorr(const char *Cmd) @@ -501,10 +472,6 @@ int CmdBitstream(const char *Cmd) bit ^= 1; AppendGraph(0, clock, bit); -// for (j = 0; j < (int)(clock/2); j++) -// GraphBuffer[(i * clock) + j] = bit ^ 1; -// for (j = (int)(clock/2); j < clock; j++) -// GraphBuffer[(i * clock) + j] = bit; } RepaintGraphWindow(); @@ -530,328 +497,157 @@ int CmdDec(const char *Cmd) } /* Print our clock rate */ +// uses data from graphbuffer int CmdDetectClockRate(const char *Cmd) { - int clock = DetectClock(0); - PrintAndLog("Auto-detected clock rate: %d", clock); + GetClock("",0,0); return 0; } //by marshmellow -//demod GraphBuffer wave to 0s and 1s for each wave - 0s for short waves 1s for long waves -size_t fsk_wave_demod(int size) -{ - uint32_t last_transition = 0; - uint32_t idx = 1; - uint32_t maxVal = 0; - // we don't care about actual value, only if it's more or less than a - // threshold essentially we capture zero crossings for later analysis - for(idx=1; idx1 transition - if (GraphBuffer[idx-1] < GraphBuffer[idx]) { // 0 -> 1 transition - if (idx-last_transition<6){ - // do nothing with extra garbage (shouldn't be any) noise tolerance? - } else if(idx-last_transition < 9) { - GraphBuffer[numBits]=1; - // Other fsk demods reverse this making the short waves 1 and long waves 0 - // this is really backwards... smaller waves will typically be 0 and larger 1 [marshmellow] - // but will leave as is and invert when needed later - } else{ - GraphBuffer[numBits]=0; - } - last_transition = idx; - numBits++; - // PrintAndLog("numbits %d",numBits); - } - } - return numBits; //Actually, it returns the number of bytes, but each byte represents a bit: 1 or 0 -} -uint32_t myround(float f) -{ - if (f >= UINT_MAX) return UINT_MAX; - return (uint32_t) (f + (float)0.5); -} - -//by marshmellow (from holiman's base) -//translate 11111100000 to 10 -size_t aggregate_bits(int size, uint8_t rfLen, uint8_t maxConsequtiveBits, uint8_t invert) //,uint8_t l2h_crossing_value -{ - int lastval=GraphBuffer[0]; - uint32_t idx=0; - size_t numBits=0; - uint32_t n=1; - uint32_t n2=0; - for( idx=1; idx < size; idx++) { - - if (GraphBuffer[idx]==lastval) { - n++; - continue; - } - // if lastval was 1, we have a 1->0 crossing - if ( GraphBuffer[idx-1]==1 ) { - n=myround((float)(n+1)/((float)(rfLen)/(float)8)); //-2 noise tolerance - - // n=(n+1) / h2l_crossing_value; - //truncating could get us into trouble - //now we will try with actual clock (RF/64 or RF/50) variable instead - //then devide with float casting then truncate after more acurate division - //and round to nearest int - //like n = (((float)n)/(float)rfLen/(float)10); - } else {// 0->1 crossing - n=myround((float)(n+1)/((float)(rfLen-2)/(float)10)); // as int 120/6 = 20 as float 120/(64/10) = 18 (18.75) - //n=(n+1) / l2h_crossing_value; - } - if (n == 0) n = 1; //this should never happen... should we error if it does? - - if (n < maxConsequtiveBits) // Consecutive //when the consecutive bits are low - the noise tolerance can be high - //if it is high then we must be careful how much noise tolerance we allow - { - if (invert==0){ // do not invert bits - for (n2=0; n20 && strlen(Cmd)<=2) { - rfLen=param_get8(Cmd, 0); //if rfLen option only is used + //rfLen=param_get8(Cmd, 0); //if rfLen option only is used if (rfLen==1){ invert=1; //if invert option only is used rfLen = 50; } else if(rfLen==0) rfLen=50; } - if (strlen(Cmd)>2) { - rfLen=param_get8(Cmd, 0); //if both options are used - invert=param_get8(Cmd,1); + PrintAndLog("Args invert: %d - Clock:%d - fchigh:%d - fclow: %d",invert,rfLen,fchigh, fclow); + uint32_t i=0; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + uint32_t BitLen = getFromGraphBuf(BitStream); + int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow); + if (size>0){ + PrintAndLog("FSK decoded bitstream:"); + ClearGraph(0); + for (i=0;i (8*32)+2) size = (8*32)+2; //only output a max of 8 blocks of 32 bits most tags will have full bit stream inside that sample size + printBitStream(BitStream,size); + } else{ + PrintAndLog("no FSK data found"); } - PrintAndLog("Args invert: %d \nClock:%d",invert,rfLen); - - size_t size = fskdemod(rfLen,invert); - - PrintAndLog("FSK decoded bitstream:"); - // Now output the bitstream to the scrollback by line of 16 bits - if(size > (7*32)+2) size = (7*32)+2; //only output a max of 7 blocks of 32 bits most tags will have full bit stream inside that sample size - printBitStream(GraphBuffer,size); - - ClearGraph(1); return 0; } -//by marshmellow +//by marshmellow (based on existing demod + holiman's refactor) +//HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded) +//print full HID Prox ID and some bit format details if found int CmdFSKdemodHID(const char *Cmd) { //raw fsk demod no manchester decoding no start bit finding just get binary from wave - //set defaults - uint8_t rfLen = 50; - uint8_t invert=0;//param_get8(Cmd, 0); - size_t idx=0; uint32_t hi2=0, hi=0, lo=0; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + uint32_t BitLen = getFromGraphBuf(BitStream); //get binary from fsk wave - size_t size = fskdemod(rfLen,invert); - - // final loop, go over previously decoded fsk data and now manchester decode into usable tag ID - // 111000 bit pattern represent start of frame, 01 pattern represents a 1 and 10 represents a 0 - int frame_marker_mask[] = {1,1,1,0,0,0}; - int numshifts = 0; - idx = 0; - while( idx + 6 < size) { - // search for a start of frame marker - - if ( memcmp(GraphBuffer+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0) - { // frame marker found - idx+=6;//sizeof(frame_marker_mask); //size of int is >6 - while(GraphBuffer[idx] != GraphBuffer[idx+1] && idx < size-2) - { - // Keep going until next frame marker (or error) - // Shift in a bit. Start by shifting high registers - hi2 = (hi2<<1)|(hi>>31); - hi = (hi<<1)|(lo>>31); - //Then, shift in a 0 or one into low - if (GraphBuffer[idx] && !GraphBuffer[idx+1]) // 1 0 - lo=(lo<<1)|0; - else // 0 1 - lo=(lo<<1)|1; - numshifts++; - idx += 2; + size_t size = HIDdemodFSK(BitStream,BitLen,&hi2,&hi,&lo); + if (size<0){ + PrintAndLog("Error demoding fsk"); + return 0; + } + if (hi2==0 && hi==0 && lo==0) return 0; + if (hi2 != 0){ //extra large HID tags + PrintAndLog("TAG ID: %x%08x%08x (%d)", + (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); + setGraphBuf(BitStream,BitLen); + return 1; + } + else { //standard HID tags <38 bits + //Dbprintf("TAG ID: %x%08x (%d)",(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); //old print cmd + uint8_t fmtLen = 0; + uint32_t fc = 0; + uint32_t cardnum = 0; + if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used + uint32_t lo2=0; + lo2=(((hi & 15) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit + uint8_t idx3 = 1; + while(lo2>1){ //find last bit set to 1 (format len bit) + lo2=lo2>>1; + idx3++; } - - //PrintAndLog("Num shifts: %d ", numshifts); - // Hopefully, we read a tag and hit upon the next frame marker - if(idx + 6 < size) - { - if ( memcmp(GraphBuffer+(idx), frame_marker_mask, sizeof(frame_marker_mask)) == 0) - { - if (hi2 != 0){ //extra large HID tags - PrintAndLog("TAG ID: %x%08x%08x (%d)", - (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); - } - else { //standard HID tags <38 bits - //Dbprintf("TAG ID: %x%08x (%d)",(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); //old print cmd - uint8_t bitlen = 0; - uint32_t fc = 0; - uint32_t cardnum = 0; - if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used - uint32_t lo2=0; - lo2=(((hi & 15) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit - uint8_t idx3 = 1; - while(lo2>1){ //find last bit set to 1 (format len bit) - lo2=lo2>>1; - idx3++; - } - bitlen =idx3+19; - fc =0; - cardnum=0; - if(bitlen==26){ - cardnum = (lo>>1)&0xFFFF; - fc = (lo>>17)&0xFF; - } - if(bitlen==37){ - cardnum = (lo>>1)&0x7FFFF; - fc = ((hi&0xF)<<12)|(lo>>20); - } - if(bitlen==34){ - cardnum = (lo>>1)&0xFFFF; - fc= ((hi&1)<<15)|(lo>>17); - } - if(bitlen==35){ - cardnum = (lo>>1)&0xFFFFF; - fc = ((hi&1)<<11)|(lo>>21); - } - } - else { //if bit 38 is not set then 37 bit format is used - bitlen= 37; - fc =0; - cardnum=0; - if(bitlen==37){ - cardnum = (lo>>1)&0x7FFFF; - fc = ((hi&0xF)<<12)|(lo>>20); - } - } - - PrintAndLog("TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d", - (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF, - (unsigned int) bitlen, (unsigned int) fc, (unsigned int) cardnum); - ClearGraph(1); - return 0; - } - } + fmtLen =idx3+19; + fc =0; + cardnum=0; + if(fmtLen==26){ + cardnum = (lo>>1)&0xFFFF; + fc = (lo>>17)&0xFF; + } + if(fmtLen==37){ + cardnum = (lo>>1)&0x7FFFF; + fc = ((hi&0xF)<<12)|(lo>>20); + } + if(fmtLen==34){ + cardnum = (lo>>1)&0xFFFF; + fc= ((hi&1)<<15)|(lo>>17); + } + if(fmtLen==35){ + cardnum = (lo>>1)&0xFFFFF; + fc = ((hi&1)<<11)|(lo>>21); } - // reset - hi2 = hi = lo = 0; - numshifts = 0; - }else - { - idx++; } + else { //if bit 38 is not set then 37 bit format is used + fmtLen= 37; + fc =0; + cardnum=0; + if(fmtLen==37){ + cardnum = (lo>>1)&0x7FFFF; + fc = ((hi&0xF)<<12)|(lo>>20); + } + } + PrintAndLog("TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d", + (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF, + (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum); + setGraphBuf(BitStream,BitLen); + return 1; } - if (idx + sizeof(frame_marker_mask) >= size){ - PrintAndLog("start bits for hid not found"); - PrintAndLog("FSK decoded bitstream:"); - // Now output the bitstream to the scrollback by line of 16 bits - printBitStream(GraphBuffer,size); - - } - ClearGraph(1); return 0; } //by marshmellow +//IO-Prox demod - FSK RF/64 with preamble of 000000001 +//print ioprox ID and some format details int CmdFSKdemodIO(const char *Cmd) { //raw fsk demod no manchester decoding no start bit finding just get binary from wave //set defaults - uint8_t rfLen = 64; - uint8_t invert=1; - size_t idx=0; - uint8_t testMax=0; - //test samples are not just noise - if (GraphTraceLen < 64) return 0; - for(idx=0;idx<64;idx++){ - if (testMax 92) printBitStream(BitStream,92); + return 0; } - idx=0; - //get full binary from fsk wave - size_t size = fskdemod(rfLen,invert); - - //if not just noise - //PrintAndLog("testMax %d",testMax); - if (testMax>40){ //Index map //0 10 20 30 40 50 60 //| | | | | | | @@ -861,44 +657,24 @@ int CmdFSKdemodIO(const char *Cmd) // //XSF(version)facility:codeone+codetwo (raw) //Handle the data - int mask[] = {0,0,0,0,0,0,0,0,0,1}; - for( idx=0; idx < (size - 74); idx++) { - if ( memcmp(GraphBuffer + idx, mask, sizeof(mask))==0) { - //frame marker found - if (GraphBuffer[idx+17]==1 && GraphBuffer[idx+26]==1 && GraphBuffer[idx+35]==1 && GraphBuffer[idx+44]==1 && GraphBuffer[idx+53]==1){ - //confirmed proper separator bits found - - PrintAndLog("%d%d%d%d%d%d%d%d %d",GraphBuffer[idx], GraphBuffer[idx+1], GraphBuffer[idx+2], GraphBuffer[idx+3], GraphBuffer[idx+4], GraphBuffer[idx+5], GraphBuffer[idx+6], GraphBuffer[idx+7], GraphBuffer[idx+8]); - PrintAndLog("%d%d%d%d%d%d%d%d %d",GraphBuffer[idx+9], GraphBuffer[idx+10], GraphBuffer[idx+11],GraphBuffer[idx+12],GraphBuffer[idx+13],GraphBuffer[idx+14],GraphBuffer[idx+15],GraphBuffer[idx+16],GraphBuffer[idx+17]); - PrintAndLog("%d%d%d%d%d%d%d%d %d",GraphBuffer[idx+18], GraphBuffer[idx+19], GraphBuffer[idx+20],GraphBuffer[idx+21],GraphBuffer[idx+22],GraphBuffer[idx+23],GraphBuffer[idx+24],GraphBuffer[idx+25],GraphBuffer[idx+26]); - PrintAndLog("%d%d%d%d%d%d%d%d %d",GraphBuffer[idx+27], GraphBuffer[idx+28], GraphBuffer[idx+29],GraphBuffer[idx+30],GraphBuffer[idx+31],GraphBuffer[idx+32],GraphBuffer[idx+33],GraphBuffer[idx+34],GraphBuffer[idx+35]); - PrintAndLog("%d%d%d%d%d%d%d%d %d",GraphBuffer[idx+36], GraphBuffer[idx+37], GraphBuffer[idx+38],GraphBuffer[idx+39],GraphBuffer[idx+40],GraphBuffer[idx+41],GraphBuffer[idx+42],GraphBuffer[idx+43],GraphBuffer[idx+44]); - PrintAndLog("%d%d%d%d%d%d%d%d %d",GraphBuffer[idx+45], GraphBuffer[idx+46], GraphBuffer[idx+47],GraphBuffer[idx+48],GraphBuffer[idx+49],GraphBuffer[idx+50],GraphBuffer[idx+51],GraphBuffer[idx+52],GraphBuffer[idx+53]); - PrintAndLog("%d%d%d%d%d%d%d%d %d%d",GraphBuffer[idx+54],GraphBuffer[idx+55],GraphBuffer[idx+56],GraphBuffer[idx+57],GraphBuffer[idx+58],GraphBuffer[idx+59],GraphBuffer[idx+60],GraphBuffer[idx+61],GraphBuffer[idx+62],GraphBuffer[idx+63]); - - uint32_t code = bytebits_to_byte(GraphBuffer+idx,32); - uint32_t code2 = bytebits_to_byte(GraphBuffer+idx+32,32); - short version = bytebits_to_byte(GraphBuffer+idx+27,8); //14,4 - uint8_t facilitycode = bytebits_to_byte(GraphBuffer+idx+19,8) ; - uint16_t number = (bytebits_to_byte(GraphBuffer+idx+36,8)<<8)|(bytebits_to_byte(GraphBuffer+idx+45,8)); //36,9 - - PrintAndLog("XSF(%02d)%02x:%d (%08x%08x)",version,facilitycode,number,code,code2); - ClearGraph(1); - return 0; - } else { - PrintAndLog("thought we had a valid tag but did not match format"); - } - } - } - if (idx >= (size-74)){ - PrintAndLog("start bits for io prox not found"); - PrintAndLog("FSK decoded bitstream:"); - // Now output the bitstream to the scrollback by line of 16 bits - printBitStream(GraphBuffer,size); - } - } - ClearGraph(1); - return 0; + if (idx+64>BitLen) return 0; + PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx], BitStream[idx+1], BitStream[idx+2], BitStream[idx+3], BitStream[idx+4], BitStream[idx+5], BitStream[idx+6], BitStream[idx+7], BitStream[idx+8]); + PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+9], BitStream[idx+10], BitStream[idx+11],BitStream[idx+12],BitStream[idx+13],BitStream[idx+14],BitStream[idx+15],BitStream[idx+16],BitStream[idx+17]); + PrintAndLog("%d%d%d%d%d%d%d%d %d facility",BitStream[idx+18], BitStream[idx+19], BitStream[idx+20],BitStream[idx+21],BitStream[idx+22],BitStream[idx+23],BitStream[idx+24],BitStream[idx+25],BitStream[idx+26]); + PrintAndLog("%d%d%d%d%d%d%d%d %d version",BitStream[idx+27], BitStream[idx+28], BitStream[idx+29],BitStream[idx+30],BitStream[idx+31],BitStream[idx+32],BitStream[idx+33],BitStream[idx+34],BitStream[idx+35]); + PrintAndLog("%d%d%d%d%d%d%d%d %d code1",BitStream[idx+36], BitStream[idx+37], BitStream[idx+38],BitStream[idx+39],BitStream[idx+40],BitStream[idx+41],BitStream[idx+42],BitStream[idx+43],BitStream[idx+44]); + PrintAndLog("%d%d%d%d%d%d%d%d %d code2",BitStream[idx+45], BitStream[idx+46], BitStream[idx+47],BitStream[idx+48],BitStream[idx+49],BitStream[idx+50],BitStream[idx+51],BitStream[idx+52],BitStream[idx+53]); + PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum",BitStream[idx+54],BitStream[idx+55],BitStream[idx+56],BitStream[idx+57],BitStream[idx+58],BitStream[idx+59],BitStream[idx+60],BitStream[idx+61],BitStream[idx+62],BitStream[idx+63]); + + uint32_t code = bytebits_to_byte(BitStream+idx,32); + uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32); + uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4 + uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ; + uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9 + + PrintAndLog("XSF(%02d)%02x:%05d (%08x%08x)",version,facilitycode,number,code,code2); + setGraphBuf(BitStream,BitLen); + return 1; } int CmdFSKdemod(const char *Cmd) //old CmdFSKdemod needs updating { @@ -920,7 +696,7 @@ int CmdFSKdemod(const char *Cmd) //old CmdFSKdemod needs updating int lowLen = sizeof (LowTone) / sizeof (int); int highLen = sizeof (HighTone) / sizeof (int); - int convLen = (highLen > lowLen) ? highLen : lowLen; //if highlen > lowLen then highlen else lowlen + int convLen = (highLen > lowLen) ? highLen : lowLen; uint32_t hi = 0, lo = 0; int i, j; @@ -986,8 +762,7 @@ int CmdFSKdemod(const char *Cmd) //old CmdFSKdemod needs updating PrintAndLog("actual data bits start at sample %d", maxPos); PrintAndLog("length %d/%d", highLen, lowLen); - uint8_t bits[46]; - bits[sizeof(bits)-1] = '\0'; + uint8_t bits[46] = {0x00}; // find bit pairs and manchester decode them for (i = 0; i < arraylen(bits) - 1; ++i) { @@ -1094,22 +869,21 @@ int CmdHpf(const char *Cmd) int CmdSamples(const char *Cmd) { - int cnt = 0; - int n; - uint8_t got[40000]; - - n = strtol(Cmd, NULL, 0); - if (n == 0) n = 6000; - if (n > sizeof(got)) n = sizeof(got); + uint8_t got[40000] = {0x00}; + + int n = strtol(Cmd, NULL, 0); + if (n == 0) + n = 20000; + + if (n > sizeof(got)) + n = sizeof(got); - PrintAndLog("Reading %d samples\n", n); + PrintAndLog("Reading %d samples from device memory\n", n); GetFromBigBuf(got,n,0); WaitForResponse(CMD_ACK,NULL); - for (int j = 0; j < n; j++) { - GraphBuffer[cnt++] = ((int)got[j]) - 128; + for (int j = 0; j < n; ++j) { + GraphBuffer[j] = ((int)got[j]) - 128; } - - PrintAndLog("Done!\n"); GraphTraceLen = n; RepaintGraphWindow(); return 0; @@ -1117,29 +891,67 @@ int CmdSamples(const char *Cmd) int CmdTuneSamples(const char *Cmd) { - int cnt = 0; - int n = 255; - uint8_t got[255]; - - PrintAndLog("Reading %d samples\n", n); - GetFromBigBuf(got,n,7256); // armsrc/apps.h: #define FREE_BUFFER_OFFSET 7256 - WaitForResponse(CMD_ACK,NULL); - for (int j = 0; j < n; j++) { - GraphBuffer[cnt++] = ((int)got[j]) - 128; + int timeout = 0; + printf("\nMeasuring antenna characteristics, please wait..."); + + UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING}; + SendCommand(&c); + + UsbCommand resp; + while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) { + timeout++; + printf("."); + if (timeout > 7) { + PrintAndLog("\nNo response from Proxmark. Aborting..."); + return 1; + } + } + + int peakv, peakf; + int vLf125, vLf134, vHf; + vLf125 = resp.arg[0] & 0xffff; + vLf134 = resp.arg[0] >> 16; + vHf = resp.arg[1] & 0xffff;; + peakf = resp.arg[2] & 0xffff; + peakv = resp.arg[2] >> 16; + PrintAndLog(""); + PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0); + PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0); + PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1)); + PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0); + if (peakv<2000) + PrintAndLog("# Your LF antenna is unusable."); + else if (peakv<10000) + PrintAndLog("# Your LF antenna is marginal."); + if (vHf<2000) + PrintAndLog("# Your HF antenna is unusable."); + else if (vHf<5000) + PrintAndLog("# Your HF antenna is marginal."); + + for (int i = 0; i < 256; i++) { + GraphBuffer[i] = resp.d.asBytes[i] - 128; } PrintAndLog("Done! Divisor 89 is 134khz, 95 is 125khz.\n"); PrintAndLog("\n"); - GraphTraceLen = n; - RepaintGraphWindow(); + GraphTraceLen = 256; + ShowGraphWindow(); + return 0; } int CmdLoad(const char *Cmd) { - FILE *f = fopen(Cmd, "r"); + char filename[FILE_PATH_SIZE] = {0x00}; + int len = 0; + + len = strlen(Cmd); + if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE; + memcpy(filename, Cmd, len); + + FILE *f = fopen(filename, "r"); if (!f) { - PrintAndLog("couldn't open '%s'", Cmd); + PrintAndLog("couldn't open '%s'", filename); return 0; } @@ -1166,6 +978,15 @@ int CmdLtrim(const char *Cmd) RepaintGraphWindow(); return 0; } +int CmdRtrim(const char *Cmd) +{ + int ds = atoi(Cmd); + + GraphTraceLen = ds; + + RepaintGraphWindow(); + return 0; +} /* * Manchester demodulate a bitstream. The bitstream needs to be already in @@ -1436,9 +1257,17 @@ int CmdPlot(const char *Cmd) int CmdSave(const char *Cmd) { - FILE *f = fopen(Cmd, "w"); + char filename[FILE_PATH_SIZE] = {0x00}; + int len = 0; + + len = strlen(Cmd); + if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE; + memcpy(filename, Cmd, len); + + + FILE *f = fopen(filename, "w"); if(!f) { - PrintAndLog("couldn't open '%s'", Cmd); + PrintAndLog("couldn't open '%s'", filename); return 0; } int i; @@ -1544,24 +1373,28 @@ static command_t CommandTable[] = {"help", CmdHelp, 1, "This help"}, {"amp", CmdAmp, 1, "Amplify peaks"}, {"askdemod", Cmdaskdemod, 1, "<0 or 1> -- Attempt to demodulate simple ASK tags"}, - {"askmandemod", Cmdaskmandemod, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate ASK/Manchester tags and output binary (args optional[clock will try Auto-detect])"}, + {"askmandemod", Cmdaskmandemod, 1, "[clock] [invert <0|1>] -- Attempt to demodulate ASK/Manchester tags and output binary"}, + {"askrawdemod", Cmdaskrawdemod, 1, "[clock] [invert <0|1>] -- Attempt to demodulate ASK tags and output binary"}, {"autocorr", CmdAutoCorr, 1, " -- Autocorrelation over window"}, + {"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] Biphase decode binary stream already in graph buffer (offset = bit to start decode from)"}, {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"}, {"bitstream", CmdBitstream, 1, "[clock rate] -- Convert waveform into a bitstream"}, {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"}, {"dec", CmdDec, 1, "Decimate samples"}, - {"detectclock", CmdDetectClockRate, 1, "Detect clock rate"}, + {"detectaskclock",CmdDetectClockRate, 1, "Detect ASK clock rate"}, {"fskdemod", CmdFSKdemod, 1, "Demodulate graph window as a HID FSK"}, {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate graph window as a HID FSK using raw"}, {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate graph window as an IO Prox FSK using raw"}, - {"fskrawdemod", CmdFSKrawdemod, 1, "[clock rate] [invert] Demodulate graph window from FSK to binary (clock = 64 or 50)(invert = 1 or 0)"}, + {"fskrawdemod", CmdFSKrawdemod, 1, "[clock rate] [invert] [rchigh] [rclow] Demodulate graph window from FSK to binary (clock = 50)(invert = 1 or 0)(rchigh = 10)(rclow=8)"}, {"grid", CmdGrid, 1, " -- overlay grid on graph window, use zero value to turn off either"}, {"hexsamples", CmdHexsamples, 0, " [] -- Dump big buffer as hex bytes"}, {"hide", CmdHide, 1, "Hide graph window"}, {"hpf", CmdHpf, 1, "Remove DC offset from trace"}, {"load", CmdLoad, 1, " -- Load trace (to graph window"}, {"ltrim", CmdLtrim, 1, " -- Trim samples from left of trace"}, + {"rtrim", CmdRtrim, 1, " -- Trim samples from right of trace"}, {"mandemod", CmdManchesterDemod, 1, "[i] [clock rate] -- Manchester demodulate binary stream (option 'i' to invert output)"}, + {"manrawdecode", Cmdmandecoderaw, 1, "Manchester decode binary stream already in graph buffer"}, {"manmod", CmdManchesterMod, 1, "[clock rate] -- Manchester modulate a binary stream"}, {"norm", CmdNorm, 1, "Normalize max/min to +/-500"}, {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},