X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/7fe9b0b742d7dae9c5af1d292d11840b5c3cbfae..23b598ee23c1599b849b2f1bff90f48c7751d928:/client/cmdlfem4x.c diff --git a/client/cmdlfem4x.c b/client/cmdlfem4x.c index 52d407ab..32a0ff7c 100644 --- a/client/cmdlfem4x.c +++ b/client/cmdlfem4x.c @@ -1,6 +1,19 @@ +//----------------------------------------------------------------------------- +// 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 "util.h" #include "graph.h" #include "cmdparser.h" #include "cmddata.h" @@ -9,6 +22,16 @@ static int CmdHelp(const char *Cmd); +int CmdEMdemodASK(const char *Cmd) +{ + char cmdp = param_getchar(Cmd, 0); + int findone = (cmdp == '1') ? 1 : 0; + UsbCommand c={CMD_EM410X_DEMOD}; + c.arg[0]=findone; + SendCommand(&c); + return 0; +} + /* Read the ID of an EM410x tag. * Format: * 1111 1111 1 <-- standard non-repeatable header @@ -21,9 +44,10 @@ 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 id[11] = {0x00}; + char id2[11] = {0x00}; 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 */ @@ -88,6 +112,7 @@ 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 */ @@ -122,6 +147,7 @@ retest: { /* Sweet! */ PrintAndLog("EM410x Tag ID: %s", id); + PrintAndLog("Unique Tag ID: %s", id2); /* Stop any loops */ return 1; @@ -171,7 +197,25 @@ retest: */ int CmdEM410xSim(const char *Cmd) { - int i, n, j, h, binary[4], parity[4]; + int i, n, j, binary[4], parity[4]; + + char cmdp = param_getchar(Cmd, 0); + uint8_t uid[5] = {0x00}; + + if (cmdp == 'h' || cmdp == 'H') { + PrintAndLog("Usage: lf em4x 410xsim "); + PrintAndLog(""); + PrintAndLog(" sample: lf em4x 410xsim 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; @@ -179,9 +223,6 @@ int CmdEM410xSim(const char *Cmd) /* clear our graph */ ClearGraph(0); - /* write it out a few times */ - for (h = 0; h < 4; h++) - { /* write 9 start bits */ for (i = 0; i < 9; i++) AppendGraph(0, clock, 1); @@ -218,34 +259,38 @@ int CmdEM410xSim(const char *Cmd) AppendGraph(0, clock, parity[3]); /* stop bit */ - AppendGraph(0, clock, 0); - } - - /* modulate that biatch */ - CmdManchesterMod(""); - - /* booyah! */ - RepaintGraphWindow(); - - CmdLFSim(""); + AppendGraph(1, clock, 0); + + CmdLFSim("240"); //240 start_gap. 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) { - char *zero = ""; - char *twok = "2000"; - - int stop = 0; - do - { - CmdLFRead(zero); - CmdLFSamples(twok); - stop = CmdEM410xRead(zero); - } while (!stop); - return 0; + char cmdp = param_getchar(Cmd, 0); + int read_h = (cmdp == 'h'); + do { + if (ukbhit()) { + printf("\naborted via keyboard!\n"); + break; + } + + CmdLFRead(read_h ? "h" : ""); + CmdSamples("6000"); + } while ( + !CmdEM410xRead("") + ); + return 0; } /* Read the transmitted data of an EM4x50 tag @@ -269,13 +314,13 @@ 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++) @@ -299,7 +344,7 @@ 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; @@ -392,13 +437,185 @@ 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 = 16; //default to invalid word + UsbCommand c; + + sscanf(Cmd, "%d", &Word); + + if (Word > 15) { + 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); + return 0; +} + +int CmdReadWordPWD(const char *Cmd) +{ + int Word = 16; //default to invalid word + int Password = 0xFFFFFFFF; //default to blank password + UsbCommand c; + + sscanf(Cmd, "%d %x", &Word, &Password); + + if (Word > 15) { + 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); + 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("Writting 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 = 8; //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("Writting 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"}, + {"em410xdemod", CmdEMdemodASK, 0, "[clock rate] -- Extract ID from EM410x tag"}, + {"em410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag"}, + {"em410xsim", CmdEM410xSim, 0, " -- Simulate EM410x tag"}, + {"em410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"}, + {"em410xwrite", CmdEM410xWrite, 1, " <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"}, + {"em4x50read", CmdEM4x50Read, 1, "Extract data from EM4x50 tag"}, + {"readword", CmdReadWord, 1, " -- Read EM4xxx word data"}, + {"readwordPWD", CmdReadWordPWD, 1, " -- Read EM4xxx word data in password mode"}, + {"writeword", CmdWriteWord, 1, " -- Write EM4xxx word data"}, + {"writewordPWD", CmdWriteWordPWD, 1, " -- Write EM4xxx word data in password mode"}, {NULL, NULL, 0, NULL} };