X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/7ac59a82ab5d244407254febf5dc9b7be892d2ad..890738733a64445e6565516fe20c927884b712fd:/client/cmdlfawid.c?ds=sidebyside diff --git a/client/cmdlfawid.c b/client/cmdlfawid.c index 8843e9e0..141ba172 100644 --- a/client/cmdlfawid.c +++ b/client/cmdlfawid.c @@ -8,32 +8,35 @@ // the license. //----------------------------------------------------------------------------- // Low frequency AWID26 commands +// FSK2a, RF/50, 96 bits (complete) //----------------------------------------------------------------------------- #include #include // sscanf #include "proxmark3.h" // Definitions, USB controls, etc +#include "cmdlfawid.h" #include "ui.h" // PrintAndLog #include "cmdparser.h" // CmdsParse, CmdsHelp -#include "cmdlfawid.h" // AWID function declarations -#include "lfdemod.h" // parityTest +#include "lfdemod.h" // parityTest + #include "util.h" // weigandparity #include "protocols.h" // for T55xx config register definitions +#include "cmddata.h" // for printDemod and demodbuffer commands +#include "graph.h" // for getFromGraphBuff cmds #include "cmdmain.h" static int CmdHelp(const char *Cmd); -int usage_lf_awid_fskdemod(void) { +int usage_lf_awid_read(void) { PrintAndLog("Enables AWID26 compatible reader mode printing details of scanned AWID26 tags."); PrintAndLog("By default, values are printed and logged until the button is pressed or another USB command is issued."); PrintAndLog("If the ['1'] option is provided, reader mode is exited after reading a single AWID26 card."); PrintAndLog(""); - PrintAndLog("Usage: lf awid fskdemod ['1']"); + PrintAndLog("Usage: lf awid read ['1']"); PrintAndLog("Options : "); PrintAndLog(" 1 : (optional) stop after reading a single card"); PrintAndLog(""); - PrintAndLog("Samples : lf awid fskdemod"); - PrintAndLog(" : lf awid fskdemod 1"); + PrintAndLog("Samples : lf awid read"); + PrintAndLog(" : lf awid read 1"); return 0; } @@ -66,9 +69,9 @@ int usage_lf_awid_clone(void) { return 0; } -int CmdAWIDDemodFSK(const char *Cmd) { +int CmdAWIDReadFSK(const char *Cmd) { int findone=0; - if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod(); + if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_read(); if (Cmd[0] == '1') findone = 1; UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}}; @@ -76,6 +79,104 @@ int CmdAWIDDemodFSK(const char *Cmd) { SendCommand(&c); return 0; } +//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) +{ + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + size_t size = getFromGraphBuf(BitStream); + if (size==0) return 0; + + int waveIdx = 0; + //get binary from fsk wave + int idx = AWIDdemodFSK(BitStream, &size, &waveIdx); + if (idx<=0){ + if (g_debugMode){ + 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 == -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); + setClockGrid(50, waveIdx + (idx*50)); + + size = removeParity(BitStream, idx+8, 4, 1, 88); + if (size != 66){ + if (g_debugMode) 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: %08x%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: %08x%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: %08x%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; +} //refactored by marshmellow int getAWIDBits(uint32_t fc, uint32_t cn, uint8_t *AWIDBits) { @@ -191,7 +292,8 @@ int CmdAWIDClone(const char *Cmd) { static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, - {"fskdemod", CmdAWIDDemodFSK, 0, "['1'] Realtime AWID FSK demodulator (option '1' for one tag only)"}, + {"demod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from the GraphBuffer"}, + {"read", CmdAWIDReadFSK, 0, "['1'] Realtime AWID FSK read from the antenna (option '1' for one tag only)"}, {"sim", CmdAWIDSim, 0, " -- AWID tag simulator"}, {"clone", CmdAWIDClone, 0, " -- Clone AWID to T55x7 (tag must be in range of antenna)"}, {NULL, NULL, 0, NULL}