X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/ab2fd3d68b5670b5c7550f2e98f9c8f8909a6a6e..b216af9a24fb5691ec47e6e961e0a61a343a16d7:/client/cmdlfem4x.c diff --git a/client/cmdlfem4x.c b/client/cmdlfem4x.c index 9b40d7c0..67013b2e 100644 --- a/client/cmdlfem4x.c +++ b/client/cmdlfem4x.c @@ -1,11 +1,30 @@ + //----------------------------------------------------------------------------- +// Copyright (C) 2010 iZsh +// +// 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 EM4x commands +//----------------------------------------------------------------------------- + #include -#include "proxusb.h" +#include +#include +#include "proxmark3.h" #include "ui.h" #include "graph.h" +#include "cmdmain.h" #include "cmdparser.h" #include "cmddata.h" #include "cmdlf.h" #include "cmdlfem4x.h" +#include "util.h" +#include "data.h" +#define LF_TRACE_BUFF_SIZE 12000 +#define LF_BITSSTREAM_LEN 1000 + +char *global_em410xId; static int CmdHelp(const char *Cmd); @@ -22,8 +41,9 @@ int CmdEM410xRead(const char *Cmd) int i, j, clock, header, rows, bit, hithigh, hitlow, first, bit2idx, high, low; int parity[4]; char id[11]; + char id2[11]; int retested = 0; - int BitStream[MAX_GRAPH_TRACE_LEN]; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]; high = low = 0; /* Detect high and lows and clock */ @@ -37,7 +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; @@ -78,7 +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) @@ -88,6 +108,7 @@ retest: { /* Read another byte! */ sprintf(id+rows, "%x", (8 * BitStream[i]) + (4 * BitStream[i+1]) + (2 * BitStream[i+2]) + (1 * BitStream[i+3])); + sprintf(id2+rows, "%x", (8 * BitStream[i+3]) + (4 * BitStream[i+2]) + (2 * BitStream[i+1]) + (1 * BitStream[i])); rows++; /* Keep parity info */ @@ -106,7 +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; } @@ -122,7 +143,10 @@ retest: { /* Sweet! */ PrintAndLog("EM410x Tag ID: %s", id); + PrintAndLog("Unique Tag ID: %s", id2); + global_em410xId = id; + /* Stop any loops */ return 1; } @@ -151,8 +175,9 @@ retest: } /* if we've already retested after flipping bits, return */ - if (retested++) + if (retested++){ return 0; + } /* if this didn't work, try flipping bits */ for (i = 0; i < bit2idx; i++) @@ -170,15 +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++) { @@ -222,7 +265,7 @@ int CmdEM410xSim(const char *Cmd) } /* modulate that biatch */ - CmdManchesterMod(""); + CmdManchesterMod("64"); /* booyah! */ RepaintGraphWindow(); @@ -231,15 +274,40 @@ 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) { - do - { - CmdLFRead(""); - CmdSamples("2000"); - } while ( ! CmdEM410xRead("")); + int read_h = (*Cmd == 'h'); + do + { + if (ukbhit()) { + printf("\naborted via keyboard!\n"); + break; + } + + CmdLFRead(read_h ? "h" : ""); + CmdSamples("16000"); + + } while ( + !CmdEM410xRead("") + ); + return 0; +} + +int CmdEM410xWatchnSpoof(const char *Cmd) +{ + CmdEM410xWatch(Cmd); + PrintAndLog("# Replaying : %s",global_em410xId); + CmdEM410xSim(global_em410xId); return 0; } @@ -264,13 +332,13 @@ int CmdEM410xWatch(const char *Cmd) */ int CmdEM4x50Read(const char *Cmd) { - int i, j, startblock, clock, skip, block, start, end, low, high; + int i, j, startblock, skip, block, start, end, low, high; bool complete= false; int tmpbuff[MAX_GRAPH_TRACE_LEN / 64]; char tmp[6]; high= low= 0; - clock= 64; + memset(tmpbuff, 0, MAX_GRAPH_TRACE_LEN / 64); /* first get high and low values */ for (i = 0; i < GraphTraceLen; i++) @@ -294,7 +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; @@ -387,13 +455,215 @@ int CmdEM4x50Read(const char *Cmd) return 0; } -static command_t CommandTable[] = +int CmdEM410xWrite(const char *Cmd) +{ + uint64_t id = 0xFFFFFFFFFFFFFFFF; // invalid id value + int card = 0xFF; // invalid card value + unsigned int clock = 0; // invalid clock value + + sscanf(Cmd, "%" PRIx64 " %d %d", &id, &card, &clock); + + // Check ID + if (id == 0xFFFFFFFFFFFFFFFF) { + PrintAndLog("Error! ID is required.\n"); + return 0; + } + if (id >= 0x10000000000) { + PrintAndLog("Error! Given EM410x ID is longer than 40 bits.\n"); + return 0; + } + + // Check Card + if (card == 0xFF) { + PrintAndLog("Error! Card type required.\n"); + return 0; + } + if (card < 0) { + PrintAndLog("Error! Bad card type selected.\n"); + return 0; + } + + // Check Clock + if (card == 1) + { + // Default: 64 + if (clock == 0) + clock = 64; + + // Allowed clock rates: 16, 32 and 64 + if ((clock != 16) && (clock != 32) && (clock != 64)) { + PrintAndLog("Error! Clock rate %d not valid. Supported clock rates are 16, 32 and 64.\n", clock); + return 0; + } + } + else if (clock != 0) + { + PrintAndLog("Error! Clock rate is only supported on T55x7 tags.\n"); + return 0; + } + + if (card == 1) { + PrintAndLog("Writing %s tag with UID 0x%010" PRIx64 " (clock rate: %d)", "T55x7", id, clock); + // NOTE: We really should pass the clock in as a separate argument, but to + // provide for backwards-compatibility for older firmware, and to avoid + // having to add another argument to CMD_EM410X_WRITE_TAG, we just store + // the clock rate in bits 8-15 of the card value + card = (card & 0xFF) | (((uint64_t)clock << 8) & 0xFF00); + } + else if (card == 0) + PrintAndLog("Writing %s tag with UID 0x%010" PRIx64, "T5555", id, clock); + else { + PrintAndLog("Error! Bad card type selected.\n"); + return 0; + } + + UsbCommand c = {CMD_EM410X_WRITE_TAG, {card, (uint32_t)(id >> 32), (uint32_t)id}}; + SendCommand(&c); + + return 0; +} + +int CmdReadWord(const char *Cmd) +{ + int Word = -1; //default to invalid word + UsbCommand c; + + sscanf(Cmd, "%d", &Word); + + if ( (Word > 15) | (Word < 0) ) { + PrintAndLog("Word must be between 0 and 15"); + return 1; + } + + 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); + WaitForResponse(CMD_ACK, NULL); + + uint8_t data[LF_TRACE_BUFF_SIZE] = {0x00}; + + GetFromBigBuf(data,LF_TRACE_BUFF_SIZE,3560); //3560 -- should be offset.. + WaitForResponseTimeout(CMD_ACK,NULL, 1500); + + for (int j = 0; j < LF_TRACE_BUFF_SIZE; j++) { + GraphBuffer[j] = ((int)data[j]); + } + 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); + + if ( (Word > 15) | (Word < 0) ) { + PrintAndLog("Word must be between 0 and 15"); + return 1; + } + + 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}; + + GetFromBigBuf(data,LF_TRACE_BUFF_SIZE,3560); //3560 -- should be offset.. + WaitForResponseTimeout(CMD_ACK,NULL, 1500); + + for (int j = 0; j < LF_TRACE_BUFF_SIZE; j++) { + GraphBuffer[j] = ((int)data[j]); + } + 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 CmdWriteWord(const char *Cmd) +{ + int Word = 16; //default to invalid block + int Data = 0xFFFFFFFF; //default to blank data + UsbCommand c; + + sscanf(Cmd, "%x %d", &Data, &Word); + + if (Word > 15) { + PrintAndLog("Word must be between 0 and 15"); + return 1; + } + + PrintAndLog("Writing word %d with data %08X", Word, Data); + + c.cmd = CMD_EM4X_WRITE_WORD; + c.d.asBytes[0] = 0x0; //Normal mode + c.arg[0] = Data; + c.arg[1] = Word; + c.arg[2] = 0; + SendCommand(&c); + return 0; +} + +int CmdWriteWordPWD(const char *Cmd) +{ + int Word = 16; //default to invalid word + int Data = 0xFFFFFFFF; //default to blank data + int Password = 0xFFFFFFFF; //default to blank password + UsbCommand c; + + sscanf(Cmd, "%x %d %x", &Data, &Word, &Password); + + if (Word > 15) { + PrintAndLog("Word must be between 0 and 15"); + return 1; + } + + 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 + c.arg[0] = Data; + c.arg[1] = Word; + c.arg[2] = Password; + SendCommand(&c); + return 0; +} + +static command_t CommandTable[] = { - {"help", CmdHelp, 1, "This help"}, - {"em410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag"}, - {"em410xsim", CmdEM410xSim, 0, " -- Simulate EM410x tag"}, - {"em410xwatch", CmdEM410xWatch, 0, "Watches for EM410x tags"}, - {"em4x50read", CmdEM4x50Read, 1, "Extract data from EM4x50 tag"}, + {"help", CmdHelp, 1, "This help"}, + {"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"}, + {"wrpwd", CmdWriteWordPWD, 1, " -- Write EM4xxx word data in password mode"}, {NULL, NULL, 0, NULL} };