From 946a84c35be79de8852d2c294de22f456f42a1ae Mon Sep 17 00:00:00 2001 From: marshmellow42 Date: Sat, 25 Mar 2017 15:51:31 -0400 Subject: [PATCH] Split data askgproxiidemod to own file added lf gproxii read (from antenna) fixed a few copy paste issues in the comments of some lf files --- CHANGELOG.md | 2 + client/Makefile | 1 + client/cmddata.c | 67 ------------------------ client/cmddata.h | 1 - client/cmdlf.c | 2 + client/cmdlfgproxii.c | 114 +++++++++++++++++++++++++++++++++++++++++ client/cmdlfgproxii.h | 14 +++++ client/cmdlfpresco.h | 2 +- client/cmdlfpyramid.h | 2 +- client/cmdlfviking.c | 1 - client/cmdlfviking.h | 3 +- client/cmdlfvisa2000.c | 2 +- client/cmdlfvisa2000.h | 2 +- 13 files changed, 138 insertions(+), 75 deletions(-) create mode 100644 client/cmdlfgproxii.c create mode 100644 client/cmdlfgproxii.h diff --git a/CHANGELOG.md b/CHANGELOG.md index 0e6187f4..ef9c316c 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -5,6 +5,7 @@ This project uses the changelog in accordance with [keepchangelog](http://keepac ## [unreleased][unreleased] ### Added +- Added lf gproxii read - reads a gproxii tag from the antenna - Added lf indala read - reads an indala tag from the antenna - Added lf visa2000 demod, read, clone, sim commands (iceman) - Added markers in the graph around found Sequence Terminator after askmandemod. @@ -46,6 +47,7 @@ This project uses the changelog in accordance with [keepchangelog](http://keepac - Added option c to 'hf list' (mark CRC bytes) (piwi) ### Changed +- `data askgproxiidemod has been moved to `lf gproxii demod` (reads from graphbuffer) - `lf indalaclone` has been moved to `lf indala clone` - `lf indalademod` has been moved to `lf indala altdemod` (reads from graphbuffer) - `data pskindalademod` has been moved to `lf indala demod` (reads from graphbuffer) diff --git a/client/Makefile b/client/Makefile index 511aaf2a..fa4690db 100644 --- a/client/Makefile +++ b/client/Makefile @@ -92,6 +92,7 @@ CMDSRCS = crapto1/crapto1.c\ cmdlfawid.c \ cmdlfcotag.c\ cmdlfem4x.c \ + cmdlfgproxii.c \ cmdlfhid.c \ cmdlfhitag.c \ cmdlfio.c \ diff --git a/client/cmddata.c b/client/cmddata.c index 3a7f3379..1acce2ed 100644 --- a/client/cmddata.c +++ b/client/cmddata.c @@ -444,72 +444,6 @@ int Cmdaskbiphdemod(const char *Cmd) return ASKbiphaseDemod(Cmd, true); } -//could be split to a gProxII file -//by marshmellow -//attempts to demodulate and identify a G_Prox_II verex/chubb card -//WARNING: if it fails during some points it will destroy the DemodBuffer data -// but will leave the GraphBuffer intact. -//if successful it will push askraw data back to demod buffer ready for emulation -int CmdG_Prox_II_Demod(const char *Cmd) -{ - if (!ASKbiphaseDemod(Cmd, false)){ - if (g_debugMode) PrintAndLog("Error gProxII: ASKbiphaseDemod failed 1st try"); - return 0; - } - size_t size = DemodBufferLen; - //call lfdemod.c demod for gProxII - int ans = gProxII_Demod(DemodBuffer, &size); - if (ans < 0){ - if (g_debugMode) PrintAndLog("Error gProxII_Demod"); - return 0; - } - //got a good demod of 96 bits - uint8_t ByteStream[8] = {0x00}; - uint8_t xorKey=0; - size_t startIdx = ans + 6; //start after 6 bit preamble - - uint8_t bits_no_spacer[90]; - //so as to not mess with raw DemodBuffer copy to a new sample array - memcpy(bits_no_spacer, DemodBuffer + startIdx, 90); - // remove the 18 (90/5=18) parity bits (down to 72 bits (96-6-18=72)) - size_t bitLen = removeParity(bits_no_spacer, 0, 5, 3, 90); //source, startloc, paritylen, ptype, length_to_run - if (bitLen != 72) { - if (g_debugMode) PrintAndLog("Error gProxII: spacer removal did not produce 72 bits: %u, start: %u", bitLen, startIdx); - return 0; - } - // get key and then get all 8 bytes of payload decoded - xorKey = (uint8_t)bytebits_to_byteLSBF(bits_no_spacer, 8); - for (size_t idx = 0; idx < 8; idx++) { - ByteStream[idx] = ((uint8_t)bytebits_to_byteLSBF(bits_no_spacer+8 + (idx*8),8)) ^ xorKey; - if (g_debugMode) PrintAndLog("byte %u after xor: %02x", (unsigned int)idx, ByteStream[idx]); - } - //now ByteStream contains 8 Bytes (64 bits) of decrypted raw tag data - // - uint8_t fmtLen = ByteStream[0]>>2; - uint32_t FC = 0; - uint32_t Card = 0; - //get raw 96 bits to print - uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32); - uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32); - uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32); - - if (fmtLen==36){ - FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1); - Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5); - PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card); - } else if(fmtLen==26){ - FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7); - Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7); - PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card); - } else { - PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",(int)fmtLen); - PrintAndLog("Decoded Raw: %s", sprint_hex(ByteStream, 8)); - } - PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3); - setDemodBuf(DemodBuffer+ans, 96, 0); - return 1; -} - //by marshmellow - see ASKDemod int Cmdaskrawdemod(const char *Cmd) { @@ -1776,7 +1710,6 @@ static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, {"askedgedetect", CmdAskEdgeDetect, 1, "[threshold] Adjust Graph for manual ask demod using the length of sample differences to detect the edge of a wave (use 20-45, def:25)"}, - {"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"}, diff --git a/client/cmddata.h b/client/cmddata.h index d66e586f..86d905b1 100644 --- a/client/cmddata.h +++ b/client/cmddata.h @@ -23,7 +23,6 @@ int CmdData(const char *Cmd); void printDemodBuff(void); void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx); int CmdPrintDemodBuff(const char *Cmd); -int CmdG_Prox_II_Demod(const char *Cmd); int Cmdaskrawdemod(const char *Cmd); int Cmdaskmandemod(const char *Cmd); int AutoCorrelate(int window, bool SaveGrph, bool verbose); diff --git a/client/cmdlf.c b/client/cmdlf.c index 21203535..10a70d7c 100644 --- a/client/cmdlf.c +++ b/client/cmdlf.c @@ -36,6 +36,7 @@ #include "cmdlfcotag.h" // for COTAG menu #include "cmdlfvisa2000.h" // for VISA2000 menu #include "cmdlfindala.h" // for indala menu +#include "cmdlfgproxii.h"// for gproxii menu bool g_lf_threshold_set = false; static int CmdHelp(const char *Cmd); @@ -1043,6 +1044,7 @@ static command_t CommandTable[] = {"awid", CmdLFAWID, 1, "{ AWID RFIDs... }"}, {"cotag", CmdLFCOTAG, 1, "{ COTAG RFIDs... }"}, {"em", CmdLFEM4X, 1, "{ EM4X RFIDs... }"}, + {"gproxii", CmdLF_G_Prox_II, 1, "{ G Prox II tags... }"}, {"hid", CmdLFHID, 1, "{ HID RFIDs... }"}, {"hitag", CmdLFHitag, 1, "{ Hitag tags and transponders... }"}, {"io", CmdLFIO, 1, "{ ioProx tags... }"}, diff --git a/client/cmdlfgproxii.c b/client/cmdlfgproxii.c new file mode 100644 index 00000000..06bd53eb --- /dev/null +++ b/client/cmdlfgproxii.c @@ -0,0 +1,114 @@ +//----------------------------------------------------------------------------- +// +// This code is licensed to you under the terms of the GNU GPL, version 2 or, +// at your option, any later version. See the LICENSE.txt file for the text of +// the license. +//----------------------------------------------------------------------------- +// Low frequency G Prox II tag commands +//----------------------------------------------------------------------------- +#include +#include +#include +#include "cmdlfgproxii.h" +#include "proxmark3.h" +#include "ui.h" +#include "util.h" +#include "graph.h" +#include "cmdparser.h" +#include "cmddata.h" +#include "cmdmain.h" +#include "cmdlf.h" +#include "lfdemod.h" +static int CmdHelp(const char *Cmd); + +//by marshmellow +//attempts to demodulate and identify a G_Prox_II verex/chubb card +//WARNING: if it fails during some points it will destroy the DemodBuffer data +// but will leave the GraphBuffer intact. +//if successful it will push askraw data back to demod buffer ready for emulation +int CmdG_Prox_II_Demod(const char *Cmd) +{ + if (!ASKbiphaseDemod(Cmd, false)){ + if (g_debugMode) PrintAndLog("Error gProxII: ASKbiphaseDemod failed 1st try"); + return 0; + } + size_t size = DemodBufferLen; + //call lfdemod.c demod for gProxII + int ans = gProxII_Demod(DemodBuffer, &size); + if (ans < 0){ + if (g_debugMode) PrintAndLog("Error gProxII_Demod"); + return 0; + } + //got a good demod of 96 bits + uint8_t ByteStream[8] = {0x00}; + uint8_t xorKey=0; + size_t startIdx = ans + 6; //start after 6 bit preamble + + uint8_t bits_no_spacer[90]; + //so as to not mess with raw DemodBuffer copy to a new sample array + memcpy(bits_no_spacer, DemodBuffer + startIdx, 90); + // remove the 18 (90/5=18) parity bits (down to 72 bits (96-6-18=72)) + size_t bitLen = removeParity(bits_no_spacer, 0, 5, 3, 90); //source, startloc, paritylen, ptype, length_to_run + if (bitLen != 72) { + if (g_debugMode) PrintAndLog("Error gProxII: spacer removal did not produce 72 bits: %u, start: %u", bitLen, startIdx); + return 0; + } + // get key and then get all 8 bytes of payload decoded + xorKey = (uint8_t)bytebits_to_byteLSBF(bits_no_spacer, 8); + for (size_t idx = 0; idx < 8; idx++) { + ByteStream[idx] = ((uint8_t)bytebits_to_byteLSBF(bits_no_spacer+8 + (idx*8),8)) ^ xorKey; + if (g_debugMode) PrintAndLog("byte %u after xor: %02x", (unsigned int)idx, ByteStream[idx]); + } + //now ByteStream contains 8 Bytes (64 bits) of decrypted raw tag data + // + uint8_t fmtLen = ByteStream[0]>>2; + uint32_t FC = 0; + uint32_t Card = 0; + //get raw 96 bits to print + uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32); + uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32); + uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32); + + if (fmtLen==36){ + FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1); + Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5); + PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card); + } else if(fmtLen==26){ + FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7); + Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7); + PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card); + } else { + PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",(int)fmtLen); + PrintAndLog("Decoded Raw: %s", sprint_hex(ByteStream, 8)); + } + PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3); + setDemodBuf(DemodBuffer+ans, 96, 0); + return 1; +} +//by marshmellow +//see ASKDemod for what args are accepted +int CmdG_Prox_II_Read(const char *Cmd) { + // read lf silently + CmdLFRead("s"); + // get samples silently + getSamples("10000",false); + // demod and output viking ID + return CmdG_Prox_II_Demod(Cmd); +} + +static command_t CommandTable[] = { + {"help", CmdHelp, 1, "This help"}, + {"demod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from the GraphBuffer"}, + {"read", CmdG_Prox_II_Read, 0, "Attempt to read and Extract tag data from the antenna"}, + {NULL, NULL, 0, NULL} +}; + +int CmdLF_G_Prox_II(const char *Cmd) { + CmdsParse(CommandTable, Cmd); + return 0; +} + +int CmdHelp(const char *Cmd) { + CmdsHelp(CommandTable); + return 0; +} diff --git a/client/cmdlfgproxii.h b/client/cmdlfgproxii.h new file mode 100644 index 00000000..35d982f4 --- /dev/null +++ b/client/cmdlfgproxii.h @@ -0,0 +1,14 @@ +//----------------------------------------------------------------------------- +// +// This code is licensed to you under the terms of the GNU GPL, version 2 or, +// at your option, any later version. See the LICENSE.txt file for the text of +// the license. +//----------------------------------------------------------------------------- +// Low frequency G Prox II tag commands +//----------------------------------------------------------------------------- +#ifndef CMDLFGPROXII_H__ +#define CMDLFGPROXII_H__ +extern int CmdLF_G_Prox_II(const char *Cmd); +extern int CmdG_Prox_II_Demod(const char *Cmd); +extern int CmdG_Prox_II_Read(const char *Cmd); +#endif diff --git a/client/cmdlfpresco.h b/client/cmdlfpresco.h index 801df8a9..5e80fbb1 100644 --- a/client/cmdlfpresco.h +++ b/client/cmdlfpresco.h @@ -4,7 +4,7 @@ // at your option, any later version. See the LICENSE.txt file for the text of // the license. //----------------------------------------------------------------------------- -// Low frequency T55xx commands +// Low frequency Presco tag commands //----------------------------------------------------------------------------- #ifndef CMDLFPRESCO_H__ #define CMDLFPRESCO_H__ diff --git a/client/cmdlfpyramid.h b/client/cmdlfpyramid.h index 80d81d2a..786e5db8 100644 --- a/client/cmdlfpyramid.h +++ b/client/cmdlfpyramid.h @@ -4,7 +4,7 @@ // at your option, any later version. See the LICENSE.txt file for the text of // the license. //----------------------------------------------------------------------------- -// Low frequency T55xx commands +// Low frequency Farpoint / Pyramid commands //----------------------------------------------------------------------------- #ifndef CMDLFPYRAMID_H__ #define CMDLFPYRAMID_H__ diff --git a/client/cmdlfviking.c b/client/cmdlfviking.c index 601c29f2..838bf79d 100644 --- a/client/cmdlfviking.c +++ b/client/cmdlfviking.c @@ -51,7 +51,6 @@ uint64_t getVikingBits(uint32_t id) { return ((uint64_t)0xF2 << 56) | ((uint64_t)id << 8) | checksum; } -//could be moved to a viking file //by marshmellow //see ASKDemod for what args are accepted int CmdVikingDemod(const char *Cmd) { diff --git a/client/cmdlfviking.h b/client/cmdlfviking.h index cdaad26f..a45dd9a8 100644 --- a/client/cmdlfviking.h +++ b/client/cmdlfviking.h @@ -4,7 +4,7 @@ // at your option, any later version. See the LICENSE.txt file for the text of // the license. //----------------------------------------------------------------------------- -// Low frequency T55xx commands +// Low frequency viking tag commands //----------------------------------------------------------------------------- #ifndef CMDLFVIKING_H__ #define CMDLFVIKING_H__ @@ -14,4 +14,3 @@ extern int CmdVikingRead(const char *Cmd); extern int CmdVikingClone(const char *Cmd); extern int CmdVikingSim(const char *Cmd); #endif - diff --git a/client/cmdlfvisa2000.c b/client/cmdlfvisa2000.c index 292fa1a3..61669035 100644 --- a/client/cmdlfvisa2000.c +++ b/client/cmdlfvisa2000.c @@ -4,7 +4,7 @@ // at your option, any later version. See the LICENSE.txt file for the text of // the license. //----------------------------------------------------------------------------- -// Low frequency visa 200 tag commands +// Low frequency visa 2000 tag commands // by iceman //----------------------------------------------------------------------------- diff --git a/client/cmdlfvisa2000.h b/client/cmdlfvisa2000.h index 611768b2..e54ded3b 100644 --- a/client/cmdlfvisa2000.h +++ b/client/cmdlfvisa2000.h @@ -4,7 +4,7 @@ // at your option, any later version. See the LICENSE.txt file for the text of // the license. //----------------------------------------------------------------------------- -// Low frequency T55xx commands +// Low frequency visa 2000 commands //----------------------------------------------------------------------------- #ifndef CMDLFVISA2000_H__ #define CMDLFVISA2000_H__ -- 2.39.5