mirror of
https://github.com/RfidResearchGroup/proxmark3.git
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iceman1001
369 lines
12 KiB
C
369 lines
12 KiB
C
//-----------------------------------------------------------------------------
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// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// See LICENSE.txt for the text of the license.
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//-----------------------------------------------------------------------------
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// Low frequency Idteck tag commands
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// PSK1, clk 32, 2 data blocks
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//-----------------------------------------------------------------------------
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#include "cmdlfidteck.h"
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include "common.h"
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#include "cmdparser.h" // command_t
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#include "comms.h"
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#include "ui.h"
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#include "cmddata.h"
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#include "cmdlf.h"
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#include "lfdemod.h"
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#include "commonutil.h" // num_to_bytes
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#include "cliparser.h"
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#include "cmdlfem4x05.h" // EM defines
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#include "protocols.h" // T55x7 defines
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#include "cmdlft55xx.h" // verifywrite
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#include "generator.h"
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#include "wiegand_formats.h"
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static int CmdHelp(const char *Cmd);
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static int demod_idteck_signal(void) {
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if (PSKDemod(0, 0, 100, false) != PM3_SUCCESS) {
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PrintAndLogEx(DEBUG, "DEBUG: Error - Idteck PSKDemod failed");
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return PM3_ESOFT;
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}
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size_t size = g_DemodBufferLen;
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// get binary from PSK1 wave
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int idx = detectIdteck(g_DemodBuffer, &size);
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if (idx < 0) {
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if (idx == -1)
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PrintAndLogEx(DEBUG, "DEBUG: Error - Idteck: not enough samples");
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else if (idx == -2)
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PrintAndLogEx(DEBUG, "DEBUG: Error - Idteck: just noise");
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else if (idx == -3)
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PrintAndLogEx(DEBUG, "DEBUG: Error - Idteck: preamble not found");
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else if (idx == -4)
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PrintAndLogEx(DEBUG, "DEBUG: Error - Idteck: size not correct: %zu", size);
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else
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PrintAndLogEx(DEBUG, "DEBUG: Error - Idteck: idx: %d", idx);
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// if didn't find preamble try again inverting
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if (PSKDemod(0, 1, 100, false) != PM3_SUCCESS) {
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PrintAndLogEx(DEBUG, "DEBUG: Error - Idteck PSKDemod failed");
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return PM3_ESOFT;
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}
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idx = detectIdteck(g_DemodBuffer, &size);
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if (idx < 0) {
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if (idx == -1)
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PrintAndLogEx(DEBUG, "DEBUG: Error - Idteck: not enough samples");
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else if (idx == -2)
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PrintAndLogEx(DEBUG, "DEBUG: Error - Idteck: just noise");
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else if (idx == -3)
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PrintAndLogEx(DEBUG, "DEBUG: Error - Idteck: preamble not found");
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else if (idx == -4)
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PrintAndLogEx(DEBUG, "DEBUG: Error - Idteck: size not correct: %zu", size);
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else
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PrintAndLogEx(DEBUG, "DEBUG: Error - Idteck: idx: %d", idx);
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return PM3_ESOFT;
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}
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}
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setDemodBuff(g_DemodBuffer, 64, idx);
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return PM3_SUCCESS;
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}
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int demodIdteck(uint8_t *raw, bool verbose) {
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(void) verbose; // unused so far
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uint32_t raw1 = 0;
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uint32_t raw2 = 0;
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if (raw == NULL) {
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// get binary from PSK1 wave
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int ret = demod_idteck_signal();
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if (ret != PM3_SUCCESS) {
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return ret;
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}
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raw1 = bytebits_to_byte(g_DemodBuffer, 32);
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raw2 = bytebits_to_byte(g_DemodBuffer + 32, 32);
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} else {
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raw1 = bytes_to_num(raw, 4);
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raw2 = bytes_to_num(raw + 4, 4);
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}
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// got a good demod
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uint32_t id = 0;
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if (raw1 != 0x4944544B) {
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PrintAndLogEx(FAILED, "No genuine IDTECK found");
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}
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// parity check (TBD)
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uint32_t tmp = raw2;
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// checksum check (TBD)
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// 351FBE4B -> 90370752 Card Code [523707] CUSUM = 52+37+07=90
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// So, first byte is Csum
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uint8_t chksum = ((tmp >> 24) & 0xFF);
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uint8_t calc = ((tmp >> 16) & 0xFF) +
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((tmp >> 8) & 0xFF) +
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(tmp & 0xFF);
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id = ((tmp >> 16) & 0xFF) | ((tmp >> 8) & 0xFF) << 8 | (tmp & 0xFF) << 16;
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// output
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PrintAndLogEx(SUCCESS, "IDTECK Tag Found: Card ID " _GREEN_("%u") " ( 0x%06X ) Raw: %08X%08X chksum 0x%02X ( %s )",
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id,
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id,
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raw1,
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raw2,
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chksum,
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(chksum == calc) ? _GREEN_("ok") : _RED_("fail")
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);
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wiegand_message_t packed = {
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.Bot = id,
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.Mid = 0,
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.Top = 0,
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.Length = 26
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};
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HIDUnpack(0, &packed);
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return PM3_SUCCESS;
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}
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static int CmdIdteckDemod(const char *Cmd) {
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CLIParserContext *ctx;
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CLIParserInit(&ctx, "lf idteck demod",
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"Try to find Idteck preamble, if found decode / descramble data",
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"lf idteck demod\n"
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"lf idteck demod --raw 4944544B351FBE4B"
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);
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void *argtable[] = {
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arg_param_begin,
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arg_str0("r", "raw", "<hex>", "raw bytes"),
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arg_param_end
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};
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CLIExecWithReturn(ctx, Cmd, argtable, true);
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int raw_len = 0;
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uint8_t raw[8] = {0};
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CLIGetHexWithReturn(ctx, 1, raw, &raw_len);
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CLIParserFree(ctx);
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return demodIdteck(raw, true);
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}
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static int CmdIdteckClone(const char *Cmd) {
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CLIParserContext *ctx;
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CLIParserInit(&ctx, "lf idteck clone",
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"clone a Idteck tag to T55x7 or Q5/T5555 tag\n"
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"Tag must be on the antenna when issuing this command.",
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"lf idteck clone --raw 4944544B351FBE4B"
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);
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void *argtable[] = {
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arg_param_begin,
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arg_str1("r", "raw", "<hex>", "raw bytes"),
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arg_lit0(NULL, "q5", "optional - specify writing to Q5/T5555 tag"),
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arg_lit0(NULL, "em", "optional - specify writing to EM4305/4469 tag"),
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arg_param_end
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};
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CLIExecWithReturn(ctx, Cmd, argtable, false);
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int raw_len = 0;
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uint8_t raw[8] = {0};
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CLIGetHexWithReturn(ctx, 1, raw, &raw_len);
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bool q5 = arg_get_lit(ctx, 2);
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bool em = arg_get_lit(ctx, 3);
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CLIParserFree(ctx);
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if (q5 && em) {
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PrintAndLogEx(FAILED, "Can't specify both Q5 and EM4305 at the same time");
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return PM3_EINVARG;
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}
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uint32_t blocks[3] = {T55x7_MODULATION_PSK1 | T55x7_BITRATE_RF_32 | 2 << T55x7_MAXBLOCK_SHIFT, 0, 0};
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char cardtype[16] = {"T55x7"};
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// Q5
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if (q5) {
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blocks[0] = T5555_FIXED | T55x7_MODULATION_PSK1 | T5555_SET_BITRATE(32) | 2 << T5555_MAXBLOCK_SHIFT;
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snprintf(cardtype, sizeof(cardtype), "Q5/T5555");
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}
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if (em) {
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blocks[0] = EM4305_IDTECK_CONFIG_BLOCK;
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snprintf(cardtype, sizeof(cardtype), "EM4305/4469");
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}
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for (uint8_t i = 1; i < ARRAYLEN(blocks); i++) {
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blocks[i] = bytes_to_num(raw + ((i - 1) * 4), sizeof(uint32_t));
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}
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// config for Indala 64 format (RF/32;PSK1 with RF/2;Maxblock=2)
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PrintAndLogEx(INFO, "Preparing to clone Idteck to " _YELLOW_("%s") " raw " _GREEN_("%s")
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, cardtype
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, sprint_hex_inrow(raw, raw_len)
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);
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print_blocks(blocks, ARRAYLEN(blocks));
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int res;
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if (em) {
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res = em4x05_clone_tag(blocks, ARRAYLEN(blocks), 0, false);
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} else {
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res = clone_t55xx_tag(blocks, ARRAYLEN(blocks));
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}
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PrintAndLogEx(SUCCESS, "Done!");
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PrintAndLogEx(HINT, "Hint: Try " _YELLOW_("`lf idteck reader`") " to verify");
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return res;
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}
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static int CmdIdteckSim(const char *Cmd) {
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CLIParserContext *ctx;
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CLIParserInit(&ctx, "lf idteck sim",
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"Enables simulation of Idteck card.\n"
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"Simulation runs until the button is pressed or another USB command is issued.",
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"lf idteck sim --raw 4944544B351FBE4B"
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);
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void *argtable[] = {
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arg_param_begin,
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arg_str1("r", "raw", "<hex>", "raw bytes"),
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arg_param_end
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};
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CLIExecWithReturn(ctx, Cmd, argtable, false);
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int raw_len = 0;
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uint8_t raw[8] = {0};
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CLIGetHexWithReturn(ctx, 1, raw, &raw_len);
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CLIParserFree(ctx);
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// convert to binarray
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uint8_t bs[64];
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memset(bs, 0x00, sizeof(bs));
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uint8_t counter = 0;
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for (int32_t i = 0; i < raw_len; i++) {
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uint8_t tmp = raw[i];
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bs[counter++] = (tmp >> 7) & 1;
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bs[counter++] = (tmp >> 6) & 1;
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bs[counter++] = (tmp >> 5) & 1;
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bs[counter++] = (tmp >> 4) & 1;
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bs[counter++] = (tmp >> 3) & 1;
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bs[counter++] = (tmp >> 2) & 1;
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bs[counter++] = (tmp >> 1) & 1;
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bs[counter++] = tmp & 1;
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}
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PrintAndLogEx(SUCCESS, "Simulating Idteck - raw " _YELLOW_("%s"), sprint_hex_inrow(raw, raw_len));
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PrintAndLogEx(SUCCESS, "Press " _GREEN_("pm3 button") " to abort simulation or run another command");
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PrintAndLogEx(NORMAL, "");
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lf_psksim_t *payload = calloc(1, sizeof(lf_psksim_t) + sizeof(bs));
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if (payload == NULL) {
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PrintAndLogEx(WARNING, "Failed to allocate memory");
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return PM3_EMALLOC;
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}
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payload->carrier = 2;
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payload->invert = 0;
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payload->clock = 32;
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memcpy(payload->data, bs, sizeof(bs));
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clearCommandBuffer();
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SendCommandNG(CMD_LF_PSK_SIMULATE, (uint8_t *)payload, sizeof(lf_psksim_t) + sizeof(bs));
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free(payload);
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PacketResponseNG resp;
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WaitForResponse(CMD_LF_PSK_SIMULATE, &resp);
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PrintAndLogEx(INFO, "Done!");
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if (resp.status != PM3_EOPABORTED) {
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return resp.status;
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}
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return PM3_SUCCESS;
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}
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static int CmdIdteckReader(const char *Cmd) {
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CLIParserContext *ctx;
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CLIParserInit(&ctx, "lf idteck reader",
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"read a Idteck tag",
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"lf idteck reader -@ -> continuous reader mode"
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);
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void *argtable[] = {
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arg_param_begin,
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arg_lit0("@", NULL, "optional - continuous reader mode"),
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arg_param_end
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};
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CLIExecWithReturn(ctx, Cmd, argtable, true);
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bool cm = arg_get_lit(ctx, 1);
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CLIParserFree(ctx);
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if (cm) {
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PrintAndLogEx(INFO, "Press " _GREEN_("<Enter>") " to exit");
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}
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do {
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lf_read(false, 5000);
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demodIdteck(NULL, !cm);
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} while (cm && (kbd_enter_pressed() == false));
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return PM3_SUCCESS;
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}
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static command_t CommandTable[] = {
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{"help", CmdHelp, AlwaysAvailable, "This help"},
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{"demod", CmdIdteckDemod, AlwaysAvailable, "demodulate an Idteck tag from the GraphBuffer"},
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{"reader", CmdIdteckReader, IfPm3Lf, "attempt to read and extract tag data"},
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{"clone", CmdIdteckClone, IfPm3Lf, "clone Idteck tag to T55x7 or Q5/T5555"},
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{"sim", CmdIdteckSim, IfPm3Lf, "simulate Idteck tag"},
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{NULL, NULL, NULL, NULL}
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};
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static int CmdHelp(const char *Cmd) {
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(void)Cmd; // Cmd is not used so far
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CmdsHelp(CommandTable);
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return PM3_SUCCESS;
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}
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int CmdLFIdteck(const char *Cmd) {
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clearCommandBuffer();
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return CmdsParse(CommandTable, Cmd);
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}
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// Find IDTEC PSK1, RF Preamble == 0x4944544B, Demodsize 64bits
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int detectIdteck(uint8_t *dest, size_t *size) {
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//make sure buffer has data
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if (*size < 64 * 2) return -1;
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if (getSignalProperties()->isnoise) return -2;
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size_t start_idx = 0;
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// 4 9 4 4 5 4 4 B
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uint8_t preamble[] = {0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1};
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//preamble not found
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if (preambleSearch(dest, preamble, sizeof(preamble), size, &start_idx) == false)
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return -3;
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// wrong demoded size
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if (*size != 64) {
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return -4;
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}
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return (int)start_idx;
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}
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