X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/f38a152863a5eb289acb169c5a38b4b77e87956e..5ea2c8851520ed67b42b62a25f08eb493c1ed41a:/client/cmdlfem4x.c diff --git a/client/cmdlfem4x.c b/client/cmdlfem4x.c index be31e1ea..67013b2e 100644 --- a/client/cmdlfem4x.c +++ b/client/cmdlfem4x.c @@ -1,4 +1,4 @@ -//----------------------------------------------------------------------------- + //----------------------------------------------------------------------------- // Copyright (C) 2010 iZsh // // This code is licensed to you under the terms of the GNU GPL, version 2 or, @@ -21,6 +21,8 @@ #include "cmdlfem4x.h" #include "util.h" #include "data.h" +#define LF_TRACE_BUFF_SIZE 12000 +#define LF_BITSSTREAM_LEN 1000 char *global_em410xId; @@ -55,7 +57,7 @@ int CmdEM410xRead(const char *Cmd) /* get clock */ clock = GetClock(Cmd, high, 0); - + /* parity for our 4 columns */ parity[0] = parity[1] = parity[2] = parity[3] = 0; header = rows = 0; @@ -96,7 +98,7 @@ int CmdEM410xRead(const char *Cmd) retest: /* We go till 5 before the graph ends because we'll get that far below */ - for (i = 1; i < bit2idx - 5; i++) + for (i = 0; i < bit2idx - 5; i++) { /* Step 2: We have our header but need our tag ID */ if (header == 9 && rows < 10) @@ -125,7 +127,7 @@ retest: PrintAndLog("Thought we had a valid tag but failed at word %d (i=%d)", rows + 1, i); /* Start back rows * 5 + 9 header bits, -1 to not start at same place */ - i -= 9 + (5 * rows) - 5; + i -= 9 + (5 * rows) -2; rows = header = 0; } @@ -193,15 +195,33 @@ retest: * 0 <-- stop bit, end of tag */ int CmdEM410xSim(const char *Cmd) -{ - int i, n, j, h, binary[4], parity[4]; +{ + int i, n, j, h, binary[4], parity[4]; + + char cmdp = param_getchar(Cmd, 0); + uint8_t uid[5] = {0x00}; + + if (cmdp == 'h' || cmdp == 'H') { + PrintAndLog("Usage: lf em4x sim "); + PrintAndLog(""); + PrintAndLog(" sample: lf em4x sim 0F0368568B"); + return 0; + } + if (param_gethex(Cmd, 0, uid, 10)) { + PrintAndLog("UID must include 10 HEX symbols"); + return 0; + } + + PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X", uid[0],uid[1],uid[2],uid[3],uid[4]); + PrintAndLog("Press pm3-button to about simulation"); + /* clock is 64 in EM410x tags */ int clock = 64; /* clear our graph */ - ClearGraph(0); - + ClearGraph(1); + /* write it out a few times */ for (h = 0; h < 4; h++) { @@ -245,7 +265,7 @@ int CmdEM410xSim(const char *Cmd) } /* modulate that biatch */ - CmdManchesterMod(""); + CmdManchesterMod("64"); /* booyah! */ RepaintGraphWindow(); @@ -254,38 +274,38 @@ int CmdEM410xSim(const char *Cmd) return 0; } -/* Function is equivalent of loread + losamples + em410xread - * looped until an EM410x tag is detected */ +/* Function is equivalent of lf read + data samples + em410xread + * looped until an EM410x tag is detected + * + * Why is CmdSamples("16000")? + * TBD: Auto-grow sample size based on detected sample rate. IE: If the + * rate gets lower, then grow the number of samples + * Changed by martin, 4000 x 4 = 16000, + * see http://www.proxmark.org/forum/viewtopic.php?pid=7235#p7235 + +*/ int CmdEM410xWatch(const char *Cmd) { - int read_h = (*Cmd == 'h'); - //char k; - do - { - CmdLFRead(read_h ? "h" : ""); - // 2000 samples is OK for clock=64, but not clock=32. Probably want - // 8000 for clock=16. Don't want to go too high since old HID driver - // is very slow - // TBD: Auto-grow sample size based on detected sample rate. IE: If the - // rate gets lower, then grow the number of samples - - // Changed by martin, 4000 x 4 = 16000, - // see http://www.proxmark.org/forum/viewtopic.php?pid=7235#p7235 + int read_h = (*Cmd == 'h'); + do + { + if (ukbhit()) { + printf("\naborted via keyboard!\n"); + break; + } + + CmdLFRead(read_h ? "h" : ""); CmdSamples("16000"); - } while ( + + } while ( !CmdEM410xRead("") ); - return 0; + return 0; } int CmdEM410xWatchnSpoof(const char *Cmd) { - int read_h = (*Cmd == 'h'); - do - { - CmdLFRead(read_h ? "h" : ""); - CmdSamples("16000"); - } while ( ! CmdEM410xRead("")); + CmdEM410xWatch(Cmd); PrintAndLog("# Replaying : %s",global_em410xId); CmdEM410xSim(global_em410xId); return 0; @@ -342,7 +362,7 @@ int CmdEM4x50Read(const char *Cmd) ++i; while ((GraphBuffer[i] > low) && (i(MAX_GRAPH_TRACE_LEN/64)) { + if (j>=(MAX_GRAPH_TRACE_LEN/64)) { break; } tmpbuff[j++]= i - start; @@ -506,84 +526,79 @@ int CmdEM410xWrite(const char *Cmd) int CmdReadWord(const char *Cmd) { int Word = -1; //default to invalid word - UsbCommand c; + UsbCommand c; - sscanf(Cmd, "%d", &Word); + sscanf(Cmd, "%d", &Word); if ( (Word > 15) | (Word < 0) ) { - PrintAndLog("Word must be between 0 and 15"); - return 1; - } + PrintAndLog("Word must be between 0 and 15"); + return 1; + } - PrintAndLog("Reading word %d", Word); + PrintAndLog("Reading word %d", Word); - c.cmd = CMD_EM4X_READ_WORD; - c.d.asBytes[0] = 0x0; //Normal mode - c.arg[0] = 0; - c.arg[1] = Word; - c.arg[2] = 0; - SendCommand(&c); + c.cmd = CMD_EM4X_READ_WORD; + c.d.asBytes[0] = 0x0; //Normal mode + c.arg[0] = 0; + c.arg[1] = Word; + c.arg[2] = 0; + SendCommand(&c); WaitForResponse(CMD_ACK, NULL); - size_t bytelength = 4096; - uint8_t data[bytelength]; - memset(data, 0x00, bytelength); + uint8_t data[LF_TRACE_BUFF_SIZE] = {0x00}; - GetFromBigBuf(data,bytelength,3560); //3560 -- should be offset.. + GetFromBigBuf(data,LF_TRACE_BUFF_SIZE,3560); //3560 -- should be offset.. WaitForResponseTimeout(CMD_ACK,NULL, 1500); - for (int j = 0; j < bytelength; j++) { - GraphBuffer[j] = ((int)data[j]) - 128; + for (int j = 0; j < LF_TRACE_BUFF_SIZE; j++) { + GraphBuffer[j] = ((int)data[j]); } - GraphTraceLen = bytelength; - RepaintGraphWindow(); - - manchester_decode(data, bytelength); - - free(data); + GraphTraceLen = LF_TRACE_BUFF_SIZE; + uint8_t bits[LF_BITSSTREAM_LEN] = {0x00}; + uint8_t * bitstream = bits; + manchester_decode(GraphBuffer, LF_TRACE_BUFF_SIZE, bitstream,LF_BITSSTREAM_LEN); + RepaintGraphWindow(); return 0; } int CmdReadWordPWD(const char *Cmd) { int Word = -1; //default to invalid word - int Password = 0xFFFFFFFF; //default to blank password - UsbCommand c; - - sscanf(Cmd, "%d %x", &Word, &Password); - + int Password = 0xFFFFFFFF; //default to blank password + UsbCommand c; + + sscanf(Cmd, "%d %x", &Word, &Password); + if ( (Word > 15) | (Word < 0) ) { - PrintAndLog("Word must be between 0 and 15"); - return 1; - } - - PrintAndLog("Reading word %d with password %08X", Word, Password); + PrintAndLog("Word must be between 0 and 15"); + return 1; + } - c.cmd = CMD_EM4X_READ_WORD; - c.d.asBytes[0] = 0x1; //Password mode - c.arg[0] = 0; - c.arg[1] = Word; - c.arg[2] = Password; - SendCommand(&c); + PrintAndLog("Reading word %d with password %08X", Word, Password); + + c.cmd = CMD_EM4X_READ_WORD; + c.d.asBytes[0] = 0x1; //Password mode + c.arg[0] = 0; + c.arg[1] = Word; + c.arg[2] = Password; + SendCommand(&c); WaitForResponse(CMD_ACK, NULL); + + uint8_t data[LF_TRACE_BUFF_SIZE] = {0x00}; - size_t bytelength = 4096; - uint8_t data[bytelength]; - memset(data, 0x00, bytelength); - - GetFromBigBuf(data,bytelength,3560); //3560 -- should be offset.. + GetFromBigBuf(data,LF_TRACE_BUFF_SIZE,3560); //3560 -- should be offset.. WaitForResponseTimeout(CMD_ACK,NULL, 1500); - for (int j = 0; j < bytelength; j++) { - GraphBuffer[j] = ((int)data[j]) - 128; + for (int j = 0; j < LF_TRACE_BUFF_SIZE; j++) { + GraphBuffer[j] = ((int)data[j]); } - GraphTraceLen = bytelength; + GraphTraceLen = LF_TRACE_BUFF_SIZE; + + uint8_t bits[LF_BITSSTREAM_LEN] = {0x00}; + uint8_t * bitstream = bits; + manchester_decode(GraphBuffer, LF_TRACE_BUFF_SIZE, bitstream, LF_BITSSTREAM_LEN); RepaintGraphWindow(); - - manchester_decode(data, bytelength); - - free(data); return 0; } @@ -600,7 +615,7 @@ int CmdWriteWord(const char *Cmd) return 1; } - PrintAndLog("Writting word %d with data %08X", Word, Data); + PrintAndLog("Writing word %d with data %08X", Word, Data); c.cmd = CMD_EM4X_WRITE_WORD; c.d.asBytes[0] = 0x0; //Normal mode @@ -613,7 +628,7 @@ int CmdWriteWord(const char *Cmd) int CmdWriteWordPWD(const char *Cmd) { - int Word = 8; //default to invalid word + int Word = 16; //default to invalid word int Data = 0xFFFFFFFF; //default to blank data int Password = 0xFFFFFFFF; //default to blank password UsbCommand c; @@ -625,7 +640,7 @@ int CmdWriteWordPWD(const char *Cmd) return 1; } - PrintAndLog("Writting word %d with data %08X and password %08X", Word, Data, Password); + PrintAndLog("Writing word %d with data %08X and password %08X", Word, Data, Password); c.cmd = CMD_EM4X_WRITE_WORD; c.d.asBytes[0] = 0x1; //Password mode @@ -636,17 +651,15 @@ int CmdWriteWordPWD(const char *Cmd) return 0; } - - static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, - {"410read", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag"}, - {"410sim", CmdEM410xSim, 0, " -- Simulate EM410x tag"}, - {"410watch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"}, - {"410spoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" }, - {"410write", CmdEM410xWrite, 1, " <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"}, - {"4xread", CmdEM4x50Read, 1, "Extract data from EM4x50 tag"}, + {"410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag"}, + {"410xsim", CmdEM410xSim, 0, " -- Simulate EM410x tag"}, + {"410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"}, + {"410xspoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" }, + {"410xwrite", CmdEM410xWrite, 1, " <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"}, + {"4x50read", CmdEM4x50Read, 1, "Extract data from EM4x50 tag"}, {"rd", CmdReadWord, 1, " -- Read EM4xxx word data"}, {"rdpwd", CmdReadWordPWD, 1, " -- Read EM4xxx word data in password mode "}, {"wr", CmdWriteWord, 1, " -- Write EM4xxx word data"},