mirror of
https://github.com/RfidResearchGroup/proxmark3.git
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418 lines
11 KiB
C
418 lines
11 KiB
C
//-----------------------------------------------------------------------------
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// Copyright (C) 2012 Roel Verdult
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//
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// Low frequency Hitag support
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//-----------------------------------------------------------------------------
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "data.h"
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#include "proxmark3.h"
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#include "ui.h"
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#include "cmdparser.h"
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#include "common.h"
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#include "util.h"
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#include "parity.h"
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#include "hitag2.h"
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#include "hitagS.h"
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#include "util_posix.h"
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#include "cmdmain.h"
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#include "cmddata.h"
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static int CmdHelp(const char *Cmd);
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size_t nbytes(size_t nbits) {
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return (nbits/8) + ((nbits%8) > 0);
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}
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int CmdLFHitagList(const char *Cmd) {
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uint8_t *got = malloc(USB_CMD_DATA_SIZE);
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if ( !got ) {
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PrintAndLog("Cannot allocate memory for trace");
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return 2;
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}
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// Query for the actual size of the trace
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UsbCommand response;
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GetFromBigBuf(got, USB_CMD_DATA_SIZE, 0);
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WaitForResponse(CMD_ACK, &response);
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uint16_t traceLen = response.arg[2];
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if (traceLen > USB_CMD_DATA_SIZE) {
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uint8_t *p = realloc(got, traceLen);
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if (p == NULL) {
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PrintAndLog("Cannot allocate memory for trace");
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free(got);
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return 2;
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}
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got = p;
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GetFromBigBuf(got, traceLen, 0);
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WaitForResponse(CMD_ACK,NULL);
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}
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PrintAndLog("recorded activity (TraceLen = %d bytes):");
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PrintAndLog(" ETU :nbits: who bytes");
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PrintAndLog("---------+-----+----+-----------");
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int i = 0;
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int prev = -1;
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int len = strlen(Cmd);
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char filename[FILE_PATH_SIZE] = { 0x00 };
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FILE* f = NULL;
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if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
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memcpy(filename, Cmd, len);
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if (strlen(filename) > 0) {
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f = fopen(filename,"wb");
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if (!f) {
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PrintAndLog("Error: Could not open file [%s]",filename);
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return 1;
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}
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}
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for (;;) {
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if(i >= traceLen) { break; }
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bool isResponse;
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int timestamp = *((uint32_t *)(got+i));
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if (timestamp & 0x80000000) {
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timestamp &= 0x7fffffff;
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isResponse = 1;
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} else {
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isResponse = 0;
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}
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int parityBits = *((uint32_t *)(got+i+4));
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// 4 bytes of additional information...
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// maximum of 32 additional parity bit information
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//
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// TODO:
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// at each quarter bit period we can send power level (16 levels)
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// or each half bit period in 256 levels.
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int bits = got[i+8];
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int len = nbytes(got[i+8]);
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if (len > 100) {
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break;
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}
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if (i + len > traceLen) { break;}
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uint8_t *frame = (got+i+9);
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// Break and stick with current result if buffer was not completely full
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if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
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char line[1000] = "";
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int j;
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for (j = 0; j < len; j++) {
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//if((parityBits >> (len - j - 1)) & 0x01) {
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if (isResponse && (oddparity8(frame[j]) != ((parityBits >> (len - j - 1)) & 0x01))) {
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sprintf(line+(j*4), "%02x! ", frame[j]);
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}
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else {
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sprintf(line+(j*4), "%02x ", frame[j]);
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}
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}
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PrintAndLog(" +%7d: %3d: %s %s",
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(prev < 0 ? 0 : (timestamp - prev)),
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bits,
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(isResponse ? "TAG" : " "),
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line);
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if (f) {
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fprintf(f," +%7d: %3d: %s %s\n",
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(prev < 0 ? 0 : (timestamp - prev)),
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bits,
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(isResponse ? "TAG" : " "),
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line);
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}
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prev = timestamp;
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i += (len + 9);
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}
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if (f) {
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fclose(f);
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PrintAndLog("Recorded activity succesfully written to file: %s", filename);
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}
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free(got);
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return 0;
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}
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int CmdLFHitagSnoop(const char *Cmd) {
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UsbCommand c = {CMD_SNOOP_HITAG};
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clearCommandBuffer();
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SendCommand(&c);
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return 0;
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}
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int CmdLFHitagSim(const char *Cmd) {
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UsbCommand c = {CMD_SIMULATE_HITAG};
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char filename[FILE_PATH_SIZE] = { 0x00 };
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FILE* f;
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bool tag_mem_supplied;
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int len = strlen(Cmd);
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if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
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memcpy(filename, Cmd, len);
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if (strlen(filename) > 0) {
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f = fopen(filename,"rb+");
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if (!f) {
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PrintAndLog("Error: Could not open file [%s]",filename);
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return 1;
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}
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tag_mem_supplied = true;
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size_t bytes_read = fread(c.d.asBytes, 48, 1, f);
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if ( bytes_read == 0) {
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PrintAndLog("Error: File reading error");
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fclose(f);
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return 1;
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}
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fclose(f);
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} else {
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tag_mem_supplied = false;
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}
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// Does the tag comes with memory
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c.arg[0] = (uint32_t)tag_mem_supplied;
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clearCommandBuffer();
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SendCommand(&c);
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return 0;
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}
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int CmdLFHitagReader(const char *Cmd) {
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UsbCommand c = {CMD_READER_HITAG, {0,0,0} };//, {param_get32ex(Cmd,0,0,10),param_get32ex(Cmd,1,0,16),param_get32ex(Cmd,2,0,16),param_get32ex(Cmd,3,0,16)}};
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hitag_data* htd = (hitag_data*)c.d.asBytes;
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hitag_function htf = param_get32ex(Cmd, 0, 0, 10);
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switch (htf) {
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case 01: { //RHTSF_CHALLENGE
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c.cmd = CMD_READ_HITAG_S;
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num_to_bytes(param_get32ex(Cmd, 1, 0, 16), 4, htd->auth.NrAr);
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num_to_bytes(param_get32ex(Cmd, 2, 0, 16), 4, htd->auth.NrAr+4);
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} break;
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case 02: { //RHTSF_KEY
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c.cmd = CMD_READ_HITAG_S;
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num_to_bytes(param_get64ex(Cmd, 1, 0, 16), 6, htd->crypto.key);
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} break;
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case RHT2F_PASSWORD: {
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num_to_bytes(param_get32ex(Cmd, 1, 0, 16), 4, htd->pwd.password);
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} break;
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case RHT2F_AUTHENTICATE: {
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num_to_bytes(param_get32ex(Cmd, 1, 0, 16), 4, htd->auth.NrAr);
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num_to_bytes(param_get32ex(Cmd, 2, 0, 16), 4, htd->auth.NrAr+4);
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} break;
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case RHT2F_CRYPTO: {
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num_to_bytes(param_get64ex(Cmd, 1, 0, 16), 6, htd->crypto.key);
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} break;
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case RHT2F_TEST_AUTH_ATTEMPTS: {
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// No additional parameters needed
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} break;
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case RHT2F_UID_ONLY: {
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// No additional parameters needed
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} break;
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default: {
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PrintAndLog("\nError: unkown reader function %d", htf);
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PrintAndLog("");
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PrintAndLog("Usage: hitag reader <Reader Function #>");
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PrintAndLog("Reader Functions:");
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PrintAndLog(" HitagS (0*)");
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PrintAndLog(" 01 <nr> <ar> (Challenge) read all pages from a Hitag S tag");
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PrintAndLog(" 02 <key> (set to 0 if no authentication is needed) read all pages from a Hitag S tag");
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PrintAndLog(" Hitag1 (1*)");
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PrintAndLog(" Hitag2 (2*)");
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PrintAndLog(" 21 <password> (password mode)");
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PrintAndLog(" 22 <nr> <ar> (authentication)");
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PrintAndLog(" 23 <key> (authentication) key is in format: ISK high + ISK low");
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PrintAndLog(" 25 (test recorded authentications)");
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PrintAndLog(" 26 just read UID");
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return 1;
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} break;
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}
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// Copy the hitag2 function into the first argument
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c.arg[0] = htf;
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clearCommandBuffer();
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SendCommand(&c);
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UsbCommand resp;
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if ( !WaitForResponseTimeout(CMD_ACK, &resp, 4000) ) {
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PrintAndLog("timeout while waiting for reply.");
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return 1;
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}
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// Check the return status, stored in the first argument
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if (resp.arg[0] == false) {
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if (g_debugMode) PrintAndLog("DEBUG: Error - hitag failed");
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return 1;
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}
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uint32_t id = bytes_to_num(resp.d.asBytes, 4);
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if (htf == RHT2F_UID_ONLY){
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PrintAndLog("Valid Hitag2 tag found - UID: %08x", id);
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} else {
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char filename[FILE_PATH_SIZE];
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FILE* f = NULL;
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sprintf(filename, "%08x_%04x.ht2", id, (rand() & 0xffff));
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f = fopen(filename, "wb");
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if (!f) {
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PrintAndLog("Error: Could not open file [%s]", filename);
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return 1;
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}
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// Write the 48 tag memory bytes to file and finalize
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fwrite(resp.d.asBytes, 1, 48, f);
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fclose(f);
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PrintAndLog("Succesfully saved tag memory to [%s]", filename);
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}
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return 0;
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}
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int CmdLFHitagSimS(const char *Cmd) {
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UsbCommand c = { CMD_SIMULATE_HITAG_S };
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char filename[FILE_PATH_SIZE] = { 0x00 };
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FILE* f;
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bool tag_mem_supplied;
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int len = strlen(Cmd);
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if (len > FILE_PATH_SIZE)
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len = FILE_PATH_SIZE;
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memcpy(filename, Cmd, len);
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if (strlen(filename) > 0) {
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f = fopen(filename, "rb+");
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if (!f) {
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PrintAndLog("Error: Could not open file [%s]", filename);
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return 1;
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}
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tag_mem_supplied = true;
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size_t bytes_read = fread(c.d.asBytes, 4*64, 1, f);
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if ( bytes_read == 0) {
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PrintAndLog("Error: File reading error");
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fclose(f);
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return 1;
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}
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fclose(f);
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} else {
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tag_mem_supplied = false;
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}
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// Does the tag comes with memory
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c.arg[0] = (uint32_t) tag_mem_supplied;
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clearCommandBuffer();
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SendCommand(&c);
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return 0;
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}
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int CmdLFHitagCheckChallenges(const char *Cmd) {
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UsbCommand c = { CMD_TEST_HITAGS_TRACES };
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char filename[FILE_PATH_SIZE] = { 0x00 };
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FILE* f;
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bool file_given;
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int len = strlen(Cmd);
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if (len > FILE_PATH_SIZE)
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len = FILE_PATH_SIZE;
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memcpy(filename, Cmd, len);
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if (strlen(filename) > 0) {
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f = fopen(filename,"rb+");
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if ( !f ) {
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PrintAndLog("Error: Could not open file [%s]", filename);
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return 1;
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}
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file_given = true;
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size_t bytes_read = fread(c.d.asBytes, 8*60, 1, f);
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if ( bytes_read == 0) {
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PrintAndLog("Error: File reading error");
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fclose(f);
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return 1;
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}
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fclose(f);
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} else {
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file_given = false;
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}
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//file with all the challenges to try
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c.arg[0] = (uint32_t)file_given;
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clearCommandBuffer();
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SendCommand(&c);
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return 0;
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}
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int CmdLFHitagWP(const char *Cmd) {
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UsbCommand c = { CMD_WR_HITAG_S };
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hitag_data* htd = (hitag_data*)c.d.asBytes;
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hitag_function htf = param_get32ex(Cmd, 0, 0, 10);
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switch (htf) {
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case 03: { //WHTSF_CHALLENGE
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num_to_bytes(param_get64ex(Cmd, 1, 0, 16), 8, htd->auth.NrAr);
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c.arg[2]= param_get32ex(Cmd, 2, 0, 10);
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num_to_bytes(param_get32ex(Cmd, 3, 0, 16), 4, htd->auth.data);
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} break;
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case 04:
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case 24:
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{ //WHTSF_KEY
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num_to_bytes(param_get64ex(Cmd, 1, 0, 16), 6, htd->crypto.key);
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c.arg[2]= param_get32ex(Cmd, 2, 0, 10);
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num_to_bytes(param_get32ex(Cmd, 3, 0, 16), 4, htd->crypto.data);
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} break;
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default: {
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PrintAndLog("Error: unkown writer function %d", htf);
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PrintAndLog("Hitag writer functions");
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PrintAndLog(" HitagS (0*)");
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PrintAndLog(" 03 <nr,ar> (Challenge) <page> <byte0...byte3> write page on a Hitag S tag");
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PrintAndLog(" 04 <key> (set to 0 if no authentication is needed) <page> <byte0...byte3> write page on a Hitag S tag");
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PrintAndLog(" Hitag1 (1*)");
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PrintAndLog(" Hitag2 (2*)");
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return 1;
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} break;
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}
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// Copy the hitag function into the first argument
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c.arg[0] = htf;
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clearCommandBuffer();
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SendCommand(&c);
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UsbCommand resp;
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WaitForResponse(CMD_ACK, &resp);
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// Check the return status, stored in the first argument
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if (resp.arg[0] == false) return 1;
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return 0;
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}
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static command_t CommandTable[] = {
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{"help", CmdHelp, 1, "This help"},
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{"list", CmdLFHitagList, 1, "<outfile> List Hitag trace history"},
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{"reader", CmdLFHitagReader, 1, "Act like a Hitag Reader"},
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{"sim", CmdLFHitagSim, 1, "<infile> Simulate Hitag transponder"},
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{"simS", CmdLFHitagSimS, 1, "<hitagS.hts> Simulate HitagS transponder" },
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{"snoop", CmdLFHitagSnoop, 1, "Eavesdrop Hitag communication"},
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{"writer", CmdLFHitagWP, 1, "Act like a Hitag Writer" },
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{"check_challenges", CmdLFHitagCheckChallenges, 1, "<challenges.cc> test all challenges" },
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{ NULL,NULL, 0, NULL }
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};
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int CmdLFHitag(const char *Cmd) {
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clearCommandBuffer();
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CmdsParse(CommandTable, Cmd);
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return 0;
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}
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int CmdHelp(const char *Cmd) {
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CmdsHelp(CommandTable);
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return 0;
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}
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