#include "cmddata.h"
#include "lfdemod.h"
uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
+uint8_t g_debugMode;
int DemodBufferLen;
static int CmdHelp(const char *Cmd);
//set the demod buffer with given array of binary (one bit per byte)
//by marshmellow
-void setDemodBuf(uint8_t *buff,int size)
+void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
{
- int i=0;
- for (; i < size; ++i){
- DemodBuffer[i]=buff[i];
+ if (buff == NULL)
+ return;
+
+ if ( size >= MAX_DEMOD_BUF_LEN)
+ size = MAX_DEMOD_BUF_LEN;
+
+ size_t i = 0;
+ for (; i < size; i++){
+ DemodBuffer[i]=buff[startIdx++];
}
DemodBufferLen=size;
return;
}
+int CmdSetDebugMode(const char *Cmd)
+{
+ int demod=0;
+ sscanf(Cmd, "%i", &demod);
+ g_debugMode=(uint8_t)demod;
+ return 1;
+}
+
//by marshmellow
void printDemodBuff()
{
return;
}
if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
+
+ // ensure equally divided by 16
+ bitLen &= 0xfff0;
+
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",
DemodBuffer[i],
return;
}
if (bitLen>512) bitLen=512;
+
+ // ensure equally divided by 16
+ bitLen &= 0xfff0;
+
+
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],
{
if (id !=0){
uint64_t iii=1;
- uint64_t id2lo=0; //id2hi=0,
+ uint64_t id2lo=0;
uint32_t ii=0;
uint32_t i=0;
for (ii=5; ii>0;ii--){
}
//output em id
PrintAndLog("EM TAG ID : %010llx", id);
- PrintAndLog("Unique TAG ID: %010llx", id2lo); //id2hi,
+ PrintAndLog("Unique TAG ID: %010llx", id2lo);
PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFF);
PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
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(DemodBuffer,DemodBufferLen);
- printEM410x(id);
- if (id>0) return 1;
+ size_t size = DemodBufferLen, idx=0;
+ id = Em410xDecode(DemodBuffer, &size, &idx);
+ if (id>0){
+ setDemodBuf(DemodBuffer, size, idx);
+ if (g_debugMode){
+ PrintAndLog("DEBUG: Printing demod buffer:");
+ printDemodBuff();
+ }
+ printEM410x(id);
+ return 1;
+ }
return 0;
}
//prints binary found and saves in graphbuffer for further commands
int Cmdaskmandemod(const char *Cmd)
{
- int invert=0;
+ int invert=0;
int clk=0;
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
sscanf(Cmd, "%i %i", &clk, &invert);
}
size_t BitLen = getFromGraphBuf(BitStream);
- // PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
+ if (g_debugMode==1) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
int errCnt=0;
errCnt = askmandemod(BitStream, &BitLen,&clk,&invert);
if (errCnt<0||BitLen<16){ //if fatal error (or -1)
- // PrintAndLog("no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
+ if (g_debugMode==1) PrintAndLog("no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
return 0;
}
PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk,invert,BitLen);
}
PrintAndLog("ASK/Manchester decoded bitstream:");
// Now output the bitstream to the scrollback by line of 16 bits
- setDemodBuf(BitStream,BitLen);
+ setDemodBuf(BitStream,BitLen,0);
printDemodBuff();
uint64_t lo =0;
- lo = Em410xDecode(BitStream,BitLen);
+ size_t idx=0;
+ lo = Em410xDecode(BitStream, &BitLen, &idx);
if (lo>0){
//set GraphBuffer for clone or sim command
+ setDemodBuf(BitStream, BitLen, idx);
+ if (g_debugMode){
+ PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
+ printDemodBuff();
+ }
PrintAndLog("EM410x pattern found: ");
printEM410x(lo);
return 1;
}
- //if (BitLen>16) return 1;
return 0;
}
printBitStream(BitStream, size);
if (errCnt==0){
uint64_t id = 0;
- id = Em410xDecode(BitStream, size);
- if (id>0) setDemodBuf(BitStream, size);
- printEM410x(id);
+ size_t idx=0;
+ id = Em410xDecode(BitStream, &size, &idx);
+ if (id>0){
+ //need to adjust to set bitstream back to manchester encoded data
+ //setDemodBuf(BitStream, size, idx);
+
+ 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
+//takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
+// and "invert" default = 0 if 1 it will invert output
// 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
int errCnt=0;
size_t size=0;
int offset=0;
+ int invert=0;
int high=0, low=0;
- sscanf(Cmd, "%i", &offset);
+ sscanf(Cmd, "%i %i", &offset, &invert);
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
//get graphbuffer & high and low
for (;i<DemodBufferLen;++i){
return 0;
}
size=i;
- errCnt=BiphaseRawDecode(BitStream, &size, offset);
+ errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
if (errCnt>=20){
PrintAndLog("Too many errors attempting to decode: %d",errCnt);
return 0;
return 1;
}
-
//by marshmellow
//takes 2 arguments - clock and invert both as integers
//attempts to demodulate ask only
errCnt = askrawdemod(BitStream, &BitLen,&clk,&invert);
if (errCnt==-1||BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
PrintAndLog("no data found");
+ if (g_debugMode==1) PrintAndLog("errCnt: %d, BitLen: %d, clk: %d, invert: %d", errCnt, BitLen, clk, invert);
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 DemodBuffer
- setDemodBuf(BitStream,BitLen);
+
+ //move BitStream back to DemodBuffer
+ setDemodBuf(BitStream,BitLen,0);
- //output
+ //output
if (errCnt>0){
PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
}
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();
return 0;
}
+//by marshmellow
+//shift graph zero up or down based on input + or -
+int CmdGraphShiftZero(const char *Cmd)
+{
+
+ int shift=0;
+ //set options from parameters entered with the command
+ sscanf(Cmd, "%i", &shift);
+ int shiftedVal=0;
+ for(int i = 0; i<GraphTraceLen; i++){
+ shiftedVal=GraphBuffer[i]+shift;
+ if (shiftedVal>127)
+ shiftedVal=127;
+ else if (shiftedVal<-127)
+ shiftedVal=-127;
+ GraphBuffer[i]= shiftedVal;
+ }
+ CmdNorm("");
+ return 0;
+}
+
/* Print our clock rate */
// uses data from graphbuffer
int CmdDetectClockRate(const char *Cmd)
{
//raw fsk demod no manchester decoding no start bit finding just get binary from wave
//set defaults
- int rfLen = 50;
+ int rfLen = 0;
int invert=0;
- int fchigh=10;
- int fclow=8;
+ int fchigh=0;
+ int fclow=0;
//set options from parameters entered with the command
sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
- //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;
+ rfLen = 0;
+ }
}
- PrintAndLog("Args invert: %d - Clock:%d - fchigh:%d - fclow: %d",invert,rfLen,fchigh, fclow);
+
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
size_t BitLen = getFromGraphBuf(BitStream);
+ //get field clock lengths
+ uint16_t fcs=0;
+ if (fchigh==0 || fclow == 0){
+ fcs=countFC(BitStream, BitLen);
+ if (fcs==0){
+ fchigh=10;
+ fclow=8;
+ }else{
+ fchigh = (fcs >> 8) & 0xFF;
+ fclow = fcs & 0xFF;
+ }
+ }
+ //get bit clock length
+ if (rfLen==0){
+ rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
+ if (rfLen == 0) rfLen = 50;
+ }
+ PrintAndLog("Args invert: %d - Clock:%d - fchigh:%d - fclow: %d",invert,rfLen,fchigh, fclow);
int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
if (size>0){
PrintAndLog("FSK decoded bitstream:");
- setDemodBuf(BitStream,size);
+ setDemodBuf(BitStream,size,0);
// Now output the bitstream to the scrollback by line of 16 bits
if(size > (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
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
size_t BitLen = getFromGraphBuf(BitStream);
//get binary from fsk wave
- size_t size = HIDdemodFSK(BitStream,BitLen,&hi2,&hi,&lo);
- if (size<0){
- PrintAndLog("Error demoding fsk");
+ int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
+ if (idx<0){
+ if (g_debugMode){
+ if (idx==-1){
+ PrintAndLog("DEBUG: Just Noise Detected");
+ } else if (idx == -2) {
+ PrintAndLog("DEBUG: Error demoding fsk");
+ } else if (idx == -3) {
+ PrintAndLog("DEBUG: Preamble not found");
+ } else if (idx == -4) {
+ PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
+ } else {
+ PrintAndLog("DEBUG: Error demoding fsk %d", idx);
+ }
+ }
+ return 0;
+ }
+ if (hi2==0 && hi==0 && lo==0) {
+ if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
return 0;
}
- if (hi2==0 && hi==0 && lo==0) return 0;
if (hi2 != 0){ //extra large HID tags
PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
(unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
- setDemodBuf(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
+ lo2=(((hi & 31) << 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;
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);
}
}
else { //if bit 38 is not set then 37 bit format is used
- fmtLen= 37;
- fc =0;
- cardnum=0;
- if(fmtLen==37){
+ fmtLen = 37;
+ fc = 0;
+ cardnum = 0;
+ if(fmtLen == 37){
cardnum = (lo>>1)&0x7FFFF;
fc = ((hi&0xF)<<12)|(lo>>20);
}
PrintAndLog("HID Prox 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);
- setDemodBuf(BitStream,BitLen);
- return 1;
}
- return 0;
+ setDemodBuf(BitStream,BitLen,idx);
+ if (g_debugMode){
+ PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
+ printDemodBuff();
+ }
+ return 1;
}
+//by marshmellow
+//Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
+//print full Paradox Prox ID and some bit format details if found
+int CmdFSKdemodParadox(const char *Cmd)
+{
+ //raw fsk demod no manchester decoding no start bit finding just get binary from wave
+ uint32_t hi2=0, hi=0, lo=0;
+
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ size_t BitLen = getFromGraphBuf(BitStream);
+ //get binary from fsk wave
+ int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
+ if (idx<0){
+ if (g_debugMode){
+ if (idx==-1){
+ PrintAndLog("DEBUG: Just Noise Detected");
+ } else if (idx == -2) {
+ PrintAndLog("DEBUG: Error demoding fsk");
+ } else if (idx == -3) {
+ PrintAndLog("DEBUG: Preamble not found");
+ } else if (idx == -4) {
+ PrintAndLog("DEBUG: Error in Manchester data");
+ } else {
+ PrintAndLog("DEBUG: Error demoding fsk %d", idx);
+ }
+ }
+ return 0;
+ }
+ if (hi2==0 && hi==0 && lo==0){
+ if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
+ return 0;
+ }
+ uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
+ uint32_t cardnum = (lo>>10)&0xFFFF;
+
+ PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x",
+ hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF );
+ setDemodBuf(BitStream,BitLen,idx);
+ if (g_debugMode){
+ PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
+ printDemodBuff();
+ }
+ return 1;
+}
+
+
//by marshmellow
//IO-Prox demod - FSK RF/64 with preamble of 000000001
//print ioprox ID and some format details
//raw fsk demod no manchester decoding no start bit finding just get binary from wave
//set defaults
int idx=0;
- //something in graphbuffer
- if (GraphTraceLen < 65) return 0;
+ //something in graphbuffer?
+ if (GraphTraceLen < 65) {
+ if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
+ return 0;
+ }
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
size_t BitLen = getFromGraphBuf(BitStream);
+
//get binary from fsk wave
- // PrintAndLog("DEBUG: got buff");
idx = IOdemodFSK(BitStream,BitLen);
if (idx<0){
- //PrintAndLog("Error demoding fsk");
+ if (g_debugMode){
+ if (idx==-1){
+ PrintAndLog("DEBUG: Just Noise Detected");
+ } else if (idx == -2) {
+ PrintAndLog("DEBUG: not enough samples");
+ } else if (idx == -3) {
+ PrintAndLog("DEBUG: error during fskdemod");
+ } else if (idx == -4) {
+ PrintAndLog("DEBUG: Preamble not found");
+ } else if (idx == -5) {
+ PrintAndLog("DEBUG: Separator bits not found");
+ } else {
+ PrintAndLog("DEBUG: Error demoding fsk %d", idx);
+ }
+ }
return 0;
}
- // PrintAndLog("DEBUG: Got IOdemodFSK");
if (idx==0){
- //PrintAndLog("IO Prox Data not found - FSK Data:");
- //if (BitLen > 92) printBitStream(BitStream,92);
+ if (g_debugMode==1){
+ PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
+ if (BitLen > 92) printBitStream(BitStream,92);
+ }
return 0;
}
//Index map
//
//XSF(version)facility:codeone+codetwo (raw)
//Handle the data
- if (idx+64>BitLen) return 0;
+ if (idx+64>BitLen) {
+ if (g_debugMode==1) PrintAndLog("not enough bits found - bitlen: %d",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]);
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("IO Prox XSF(%02d)%02x:%05d (%08x%08x)",version,facilitycode,number,code,code2);
- int i;
- for (i=0;i<64;++i)
- DemodBuffer[i]=BitStream[idx++];
+ setDemodBuf(BitStream,64,idx);
+ if (g_debugMode){
+ PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
+ printDemodBuff();
+ }
+ return 1;
+}
+
+
+//by marshmellow
+//AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
+//print full AWID Prox ID and some bit format details if found
+int CmdFSKdemodAWID(const char *Cmd)
+{
+
+ //int verbose=1;
+ //sscanf(Cmd, "%i", &verbose);
+
+ //raw fsk demod no manchester decoding no start bit finding just get binary from wave
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ size_t size = getFromGraphBuf(BitStream);
- DemodBufferLen=64;
+ //get binary from fsk wave
+ int idx = AWIDdemodFSK(BitStream, &size);
+ if (idx<=0){
+ if (g_debugMode==1){
+ if (idx == -1)
+ PrintAndLog("DEBUG: Error - not enough samples");
+ else if (idx == -2)
+ PrintAndLog("DEBUG: Error - only noise found");
+ else if (idx == -3)
+ PrintAndLog("DEBUG: Error - problem during FSK demod");
+ // else if (idx == -3)
+ // PrintAndLog("Error: thought we had a tag but the parity failed");
+ else if (idx == -4)
+ PrintAndLog("DEBUG: Error - AWID preamble not found");
+ else if (idx == -5)
+ PrintAndLog("DEBUG: Error - Size not correct: %d", size);
+ else
+ PrintAndLog("DEBUG: Error %d",idx);
+ }
+ return 0;
+ }
+
+ // Index map
+ // 0 10 20 30 40 50 60
+ // | | | | | | |
+ // 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
+ // -----------------------------------------------------------------------------
+ // 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
+ // premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
+ // |---26 bit---| |-----117----||-------------142-------------|
+ // b = format bit len, o = odd parity of last 3 bits
+ // f = facility code, c = card number
+ // w = wiegand parity
+ // (26 bit format shown)
+
+ //get raw ID before removing parities
+ uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
+ uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
+ uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
+ setDemodBuf(BitStream,96,idx);
+
+ size = removeParity(BitStream, idx+8, 4, 1, 88);
+ if (size != 66){
+ if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
+ return 0;
+ }
+ // ok valid card found!
+
+ // Index map
+ // 0 10 20 30 40 50 60
+ // | | | | | | |
+ // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
+ // -----------------------------------------------------------------------------
+ // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
+ // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+ // |26 bit| |-117--| |-----142------|
+ // b = format bit len, o = odd parity of last 3 bits
+ // f = facility code, c = card number
+ // w = wiegand parity
+ // (26 bit format shown)
+
+ uint32_t fc = 0;
+ uint32_t cardnum = 0;
+ uint32_t code1 = 0;
+ uint32_t code2 = 0;
+ uint8_t fmtLen = bytebits_to_byte(BitStream,8);
+ if (fmtLen==26){
+ fc = bytebits_to_byte(BitStream+9, 8);
+ cardnum = bytebits_to_byte(BitStream+17, 16);
+ code1 = bytebits_to_byte(BitStream+8,fmtLen);
+ PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
+ } else {
+ cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
+ if (fmtLen>32){
+ code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
+ code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
+ PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
+ } else{
+ code1 = bytebits_to_byte(BitStream+8,fmtLen);
+ PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
+ }
+ }
+ if (g_debugMode){
+ PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
+ printDemodBuff();
+ }
+ //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
return 1;
}
+
+//by marshmellow
+//Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
+//print full Farpointe Data/Pyramid Prox ID and some bit format details if found
+int CmdFSKdemodPyramid(const char *Cmd)
+{
+ //raw fsk demod no manchester decoding no start bit finding just get binary from wave
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ size_t size = getFromGraphBuf(BitStream);
+
+ //get binary from fsk wave
+ int idx = PyramiddemodFSK(BitStream, &size);
+ if (idx < 0){
+ if (g_debugMode==1){
+ if (idx == -5)
+ PrintAndLog("DEBUG: Error - not enough samples");
+ else if (idx == -1)
+ PrintAndLog("DEBUG: Error - only noise found");
+ else if (idx == -2)
+ PrintAndLog("DEBUG: Error - problem during FSK demod");
+ else if (idx == -3)
+ PrintAndLog("DEBUG: Error - Size not correct: %d", size);
+ else if (idx == -4)
+ PrintAndLog("DEBUG: Error - Pyramid preamble not found");
+ else
+ PrintAndLog("DEBUG: Error - idx: %d",idx);
+ }
+ return 0;
+ }
+ // Index map
+ // 0 10 20 30 40 50 60
+ // | | | | | | |
+ // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
+ // -----------------------------------------------------------------------------
+ // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
+ // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
+
+ // 64 70 80 90 100 110 120
+ // | | | | | | |
+ // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
+ // -----------------------------------------------------------------------------
+ // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
+ // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
+ // |---115---||---------71---------|
+ // s = format start bit, o = odd parity of last 7 bits
+ // f = facility code, c = card number
+ // w = wiegand parity, x = extra space for other formats
+ // p = unknown checksum
+ // (26 bit format shown)
+
+ //get raw ID before removing parities
+ uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
+ uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
+ uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
+ uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
+ setDemodBuf(BitStream,128,idx);
+
+ size = removeParity(BitStream, idx+8, 8, 1, 120);
+ if (size != 105){
+ if (g_debugMode==1) PrintAndLog("DEBUG: Error at parity check-tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
+ return 0;
+ }
+
+ // ok valid card found!
+
+ // Index map
+ // 0 10 20 30 40 50 60 70
+ // | | | | | | | |
+ // 01234567890123456789012345678901234567890123456789012345678901234567890
+ // -----------------------------------------------------------------------
+ // 00000000000000000000000000000000000000000000000000000000000000000000000
+ // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+
+ // 71 80 90 100
+ // | | | |
+ // 1 2 34567890 1234567890123456 7 8901234
+ // ---------------------------------------
+ // 1 1 01110011 0000000001000110 0 1001010
+ // s w ffffffff cccccccccccccccc w ppppppp
+ // |--115-| |------71------|
+ // s = format start bit, o = odd parity of last 7 bits
+ // f = facility code, c = card number
+ // w = wiegand parity, x = extra space for other formats
+ // p = unknown checksum
+ // (26 bit format shown)
+
+ //find start bit to get fmtLen
+ int j;
+ for (j=0; j<size; j++){
+ if(BitStream[j]) break;
+ }
+ uint8_t fmtLen = size-j-8;
+ uint32_t fc = 0;
+ uint32_t cardnum = 0;
+ uint32_t code1 = 0;
+ //uint32_t code2 = 0;
+ if (fmtLen==26){
+ fc = bytebits_to_byte(BitStream+73, 8);
+ cardnum = bytebits_to_byte(BitStream+81, 16);
+ code1 = bytebits_to_byte(BitStream+72,fmtLen);
+ PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %x%08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi3, rawHi2, rawHi, rawLo);
+ } else if (fmtLen==45){
+ fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
+ fc = bytebits_to_byte(BitStream+53, 10);
+ cardnum = bytebits_to_byte(BitStream+63, 32);
+ PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
+ } else {
+ cardnum = bytebits_to_byte(BitStream+81, 16);
+ if (fmtLen>32){
+ //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
+ //code2 = bytebits_to_byte(BitStream+(size-32),32);
+ PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
+ } else{
+ //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
+ PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
+ }
+ }
+ if (g_debugMode){
+ PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
+ printDemodBuff();
+ }
+ return 1;
+}
+
int CmdFSKdemod(const char *Cmd) //old CmdFSKdemod needs updating
{
static const int LowTone[] = {
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) {
return 0;
}
+//by marshmellow
+//attempt to detect the field clock and bit clock for FSK
+int CmdFSKfcDetect(const char *Cmd)
+{
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ size_t size = getFromGraphBuf(BitStream);
+
+ uint16_t ans = countFC(BitStream, size);
+ if (ans==0) {
+ if (g_debugMode) PrintAndLog("DEBUG: No data found");
+ return 0;
+ }
+ uint8_t fc1, fc2;
+ fc1 = (ans >> 8) & 0xFF;
+ fc2 = ans & 0xFF;
+
+ uint8_t rf1 = detectFSKClk(BitStream, size, fc1, fc2);
+ if (rf1==0) {
+ if (g_debugMode) PrintAndLog("DEBUG: Clock detect error");
+ return 0;
+ }
+ PrintAndLog("Detected Field Clocks: FC/%d, FC/%d - Bit Clock: RF/%d", fc1, fc2, rf1);
+ return 1;
+}
+
+//by marshmellow
+//attempt to detect the bit clock for PSK or NRZ modulations
int CmdDetectNRZpskClockRate(const char *Cmd)
{
GetNRZpskClock("",0,0);
return 0;
}
-int PSKnrzDemod(const char *Cmd){
+//by marshmellow
+//attempt to psk1 or nrz demod graph buffer
+//NOTE CURRENTLY RELIES ON PEAKS :(
+int PSKnrzDemod(const char *Cmd, uint8_t verbose)
+{
int invert=0;
int clk=0;
sscanf(Cmd, "%i %i", &clk, &invert);
int errCnt=0;
errCnt = pskNRZrawDemod(BitStream, &BitLen,&clk,&invert);
if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
- //PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
+ if (g_debugMode==1) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
return -1;
}
- PrintAndLog("Tried PSK/NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
+ if (verbose) PrintAndLog("Tried PSK/NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
//prime demod buffer for output
- setDemodBuf(BitStream,BitLen);
+ setDemodBuf(BitStream,BitLen,0);
return errCnt;
}
// Indala 26 bit decode
// optional arguments - same as CmdpskNRZrawDemod (clock & invert)
int CmdIndalaDecode(const char *Cmd)
{
- int ans;
- if (strlen(Cmd)>0)
- ans=PSKnrzDemod(Cmd);
- else
- ans=PSKnrzDemod("32");
+ int ans;
+ if (strlen(Cmd)>0){
+ ans = PSKnrzDemod(Cmd, 0);
+ } else{ //default to RF/32
+ ans = PSKnrzDemod("32", 0);
+ }
if (ans < 0){
- PrintAndLog("Error1: %d",ans);
+ if (g_debugMode==1)
+ PrintAndLog("Error1: %d",ans);
return 0;
}
uint8_t invert=0;
ans = indala26decode(DemodBuffer,(size_t *) &DemodBufferLen, &invert);
if (ans < 1) {
- PrintAndLog("Error2: %d",ans);
+ if (g_debugMode==1)
+ PrintAndLog("Error2: %d",ans);
return -1;
}
- char showbits[251];
- if(invert==1) PrintAndLog("Had to invert bits");
+ char showbits[251]={0x00};
+ if (invert)
+ if (g_debugMode==1)
+ PrintAndLog("Had to invert bits");
+
//convert UID to HEX
uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
int idx;
showbits[idx]='\0';
PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
}
+ if (g_debugMode){
+ PrintAndLog("DEBUG: printing demodbuffer:");
+ printDemodBuff();
+ }
return 1;
}
+//by marshmellow
+//attempt to clean psk wave noise after a peak
+//NOTE RELIES ON PEAKS :(
int CmdPskClean(const char *Cmd)
{
uint8_t bitStream[MAX_GRAPH_TRACE_LEN]={0};
return 0;
}
-//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
+// by marshmellow
+// takes 2 arguments - clock and invert both as integers
+// attempts to demodulate psk only
+// prints binary found and saves in demodbuffer for further commands
int CmdpskNRZrawDemod(const char *Cmd)
{
- int errCnt= PSKnrzDemod(Cmd);
+ int errCnt;
+
+ errCnt = PSKnrzDemod(Cmd, 1);
//output
- if (errCnt<0) return 0;
+ if (errCnt<0){
+ if (g_debugMode) PrintAndLog("Error demoding: %d",errCnt);
+ return 0;
+ }
if (errCnt>0){
- PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
- }
- PrintAndLog("PSK or NRZ demoded bitstream:");
- // Now output the bitstream to the scrollback by line of 16 bits
- printDemodBuff();
+ if (g_debugMode){
+ PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
+ PrintAndLog("PSK or NRZ demoded bitstream:");
+ // Now output the bitstream to the scrollback by line of 16 bits
+ printDemodBuff();
+ }
+ }else{
+ PrintAndLog("PSK or NRZ demoded bitstream:");
+ // Now output the bitstream to the scrollback by line of 16 bits
+ printDemodBuff();
+ return 1;
+ }
+ return 0;
+}
- return 1;
+// by marshmellow
+// takes same args as cmdpsknrzrawdemod
+int CmdPSK2rawDemod(const char *Cmd)
+{
+ int errCnt=0;
+ errCnt=PSKnrzDemod(Cmd, 1);
+ if (errCnt<0){
+ if (g_debugMode) PrintAndLog("Error demoding: %d",errCnt);
+ return 0;
+ }
+ psk1TOpsk2(DemodBuffer, DemodBufferLen);
+ if (errCnt>0){
+ if (g_debugMode){
+ PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
+ PrintAndLog("PSK2 demoded bitstream:");
+ // Now output the bitstream to the scrollback by line of 16 bits
+ printDemodBuff();
+ }
+ }else{
+ PrintAndLog("PSK2 demoded bitstream:");
+ // Now output the bitstream to the scrollback by line of 16 bits
+ printDemodBuff();
+ }
+ return 1;
}
int CmdGrid(const char *Cmd)
int offset = 0;
char string_buf[25];
char* string_ptr = string_buf;
- uint8_t got[40000];
+ uint8_t got[BIGBUF_SIZE];
sscanf(Cmd, "%i %i", &requested, &offset);
requested = 8;
}
if (offset + requested > sizeof(got)) {
- PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > 40000");
+ PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
return 0;
}
int CmdSamples(const char *Cmd)
{
- uint8_t got[40000];
+ uint8_t got[BIGBUF_SIZE] = {0x00};
int n = strtol(Cmd, NULL, 0);
if (n == 0)
n = sizeof(got);
PrintAndLog("Reading %d samples from device memory\n", n);
- GetFromBigBuf(got,n,0);
- WaitForResponse(CMD_ACK,NULL);
+ GetFromBigBuf(got,n,0);
+ WaitForResponse(CMD_ACK,NULL);
for (int j = 0; j < n; j++) {
GraphBuffer[j] = ((int)got[j]) - 128;
- }
- GraphTraceLen = n;
- RepaintGraphWindow();
- return 0;
+ }
+ GraphTraceLen = n;
+ RepaintGraphWindow();
+ return 0;
}
int CmdTuneSamples(const char *Cmd)
int CmdLoad(const char *Cmd)
{
- char filename[FILE_PATH_SIZE] = {0x00};
- int len = 0;
+ 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);
+ len = strlen(Cmd);
+ if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
+ memcpy(filename, Cmd, len);
- FILE *f = fopen(filename, "r");
+ FILE *f = fopen(filename, "r");
if (!f) {
PrintAndLog("couldn't open '%s'", filename);
return 0;
RepaintGraphWindow();
return 0;
}
+
+// trim graph to input argument length
int CmdRtrim(const char *Cmd)
{
int ds = atoi(Cmd);
int CmdSave(const char *Cmd)
{
- char filename[FILE_PATH_SIZE] = {0x00};
- int len = 0;
+ 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);
+ len = strlen(Cmd);
+ if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
+ memcpy(filename, Cmd, len);
FILE *f = fopen(filename, "w");
{"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|1>] -- Attempt to demodulate ASK/Manchester tags and output binary (args optional[clock will try Auto-detect])"},
- {"askrawdemod", Cmdaskrawdemod, 1, "[clock] [invert<0|1>] -- Attempt to demodulate ASK 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 (args optional)"},
+ {"askrawdemod", Cmdaskrawdemod, 1, "[clock] [invert<0|1>] -- Attempt to demodulate ASK tags and output bin (args optional)"},
{"autocorr", CmdAutoCorr, 1, "<window length> -- Autocorrelation over window"},
- {"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] Biphase decode binary stream already in graph buffer (offset = bit to start decode from)"},
+ {"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] [invert<0|1>] Biphase decode bin stream in demod buffer (offset = 0|1 bits to shift the decode start)"},
{"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 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] [rchigh] [rclow] Demodulate graph window from FSK to binary (clock = 50)(invert = 1|0)(rchigh = 10)(rclow=8)"},
+ {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate graph window as an AWID FSK tag using raw"},
+ {"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
+ {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate graph window as a HID FSK tag using raw"},
+ {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate graph window as an IO Prox tag FSK using raw"},
+ {"fskpyramiddemod",CmdFSKdemodPyramid,1, "Demodulate graph window as a Pyramid FSK tag using raw"},
+ {"fskparadoxdemod",CmdFSKdemodParadox,1, "Demodulate graph window as a Paradox FSK tag using raw"},
+ {"fskrawdemod", CmdFSKrawdemod, 1, "[clock rate] [invert] [rchigh] [rclow] Demodulate graph window from FSK to bin (clock = 50)(invert = 1|0)(rchigh = 10)(rclow=8)"},
{"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
{"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
{"hide", CmdHide, 1, "Hide graph window"},
{"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
{"pskclean", CmdPskClean, 1, "Attempt to clean psk wave"},
{"pskdetectclock",CmdDetectNRZpskClockRate, 1, "Detect ASK, PSK, or NRZ clock rate"},
- {"pskindalademod",CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Attempt to demodulate psk indala tags and output ID binary & hex (args optional[clock will try Auto-detect])"},
- {"psknrzrawdemod",CmdpskNRZrawDemod, 1, "[clock] [invert<0|1>] -- Attempt to demodulate psk or nrz tags and output binary (args optional[clock will try Auto-detect])"},
+ {"pskindalademod",CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Attempt to demodulate psk1 indala tags and output ID binary & hex (args optional)"},
+ {"psk1nrzrawdemod",CmdpskNRZrawDemod, 1, "[clock] [invert<0|1>] -- Attempt to demodulate psk1 or nrz tags and output binary (args optional)"},
+ {"psk2rawdemod", CmdPSK2rawDemod, 1, "[clock] [invert<0|1>] -- Attempt to demodulate psk2 tags and output binary (args optional)"},
{"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window"},
{"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
{"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
+ {"setdebugmode", CmdSetDebugMode, 1, "<0|1> -- Turn on or off Debugging Mode for demods"},
+ {"shiftgraphzero",CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
{"threshold", CmdThreshold, 1, "<threshold> -- Maximize/minimize every value in the graph window depending on threshold"},
{"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
{"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
projects / proxmark3-svn / blobdiff