[proxmark3-svn] / client / cmdlfhitag.c

//-----------------------------------------------------------------------------
// Copyright (C) 2012 Roel Verdult
//
// 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 Hitag support
//-----------------------------------------------------------------------------

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "data.h"
//#include "proxusb.h"
#include "proxmark3.h"
#include "ui.h"
#include "cmdparser.h"
#include "common.h"
#include "util.h"
#include "hitag2.h"
#include "sleep.h"
#include "cmdmain.h"

static int CmdHelp(const char *Cmd);

int CmdLFHitagList(const char *Cmd)
{
  uint8_t got[3000];
  GetFromBigBuf(got,sizeof(got),0);
  WaitForResponse(CMD_ACK,NULL);

  PrintAndLog("recorded activity:");
  PrintAndLog(" ETU     :rssi: who bytes");
  PrintAndLog("---------+----+----+-----------");

  int i = 0;
  int prev = -1;

  char filename[256];
  FILE* pf = NULL;
  
  for (;;) {
    if(i >= 1900) {
      break;
    }

    bool isResponse;
    int timestamp = *((uint32_t *)(got+i));
    if (timestamp & 0x80000000) {
      timestamp &= 0x7fffffff;
      isResponse = 1;
    } else {
      isResponse = 0;
    }

    int metric = 0;
    int parityBits = *((uint32_t *)(got+i+4));
    // 4 bytes of additional information...
    // maximum of 32 additional parity bit information
    //
    // TODO:
    // at each quarter bit period we can send power level (16 levels)
    // or each half bit period in 256 levels.

    int len = got[i+8];

    if (len > 100) {
      break;
    }
    if (i + len >= 1900) {
      break;
    }

    uint8_t *frame = (got+i+9);

    // Break and stick with current result if buffer was not completely full
    if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }

    char line[1000] = "";
    int j;
    for (j = 0; j < len; j++) {
      int oddparity = 0x01;
      int k;

      for (k=0;k<8;k++) {
        oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
      }

      //if((parityBits >> (len - j - 1)) & 0x01) {
      if (isResponse && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) {
        sprintf(line+(j*4), "%02x!  ", frame[j]);
      }
      else {
        sprintf(line+(j*4), "%02x   ", frame[j]);
      }
    }

    char metricString[100];
    if (isResponse) {
      sprintf(metricString, "%3d", metric);
    } else {
      strcpy(metricString, "   ");
    }

    PrintAndLog(" +%7d: %s: %s %s",
      (prev < 0 ? 0 : (timestamp - prev)),
      metricString,
      (isResponse ? "TAG" : "   "),
      line);


   if (pf) {
      fprintf(pf," +%7d: %s: %s %s %s",
					(prev < 0 ? 0 : (timestamp - prev)),
					metricString,
					(isResponse ? "TAG" : "   "),
					line,
					"\n");
    }
	
    prev = timestamp;
    i += (len + 9);
  }
  
  if (pf) {
	  PrintAndLog("Recorded activity succesfully written to file: %s", filename);
    fclose(pf);
  }
	
  return 0;
}

int CmdLFHitagSnoop(const char *Cmd) {
  UsbCommand c = {CMD_SNOOP_HITAG};
  SendCommand(&c);
  return 0;
}

int CmdLFHitagSim(const char *Cmd) {
  UsbCommand c = {CMD_SIMULATE_HITAG};
	char filename[256] = { 0x00 };
	FILE* pf;
	bool tag_mem_supplied;

	param_getstr(Cmd,0,filename);
	
	if (strlen(filename) > 0) {
		if ((pf = fopen(filename,"rb+")) == NULL) {
			PrintAndLog("Error: Could not open file [%s]",filename);
			return 1;
		}
		tag_mem_supplied = true;
		fread(c.d.asBytes,48,1,pf);
		fclose(pf);
	} else {
		tag_mem_supplied = false;
	}
	
	// Does the tag comes with memory
	c.arg[0] = (uint32_t)tag_mem_supplied;

  SendCommand(&c);
  return 0;
}

int CmdLFHitagReader(const char *Cmd) {
//  UsbCommand c = {CMD_READER_HITAG};
	
//	param_get32ex(Cmd,1,0,16);
	UsbCommand c = {CMD_READER_HITAG};//, {param_get32ex(Cmd,0,0,10),param_get32ex(Cmd,1,0,16),param_get32ex(Cmd,2,0,16),param_get32ex(Cmd,3,0,16)}};
	hitag_data* htd = (hitag_data*)c.d.asBytes;
	hitag_function htf = param_get32ex(Cmd,0,0,10);
	
	switch (htf) {
		case RHT2F_PASSWORD: {
			num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->pwd.password);
		} break;
		case RHT2F_AUTHENTICATE: {
			num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->auth.NrAr);
			num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
		} break;
		case RHT2F_CRYPTO: {
			num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
//			num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
		} break;
		case RHT2F_TEST_AUTH_ATTEMPTS: {
			// No additional parameters needed
		} break;
		default: {
			PrintAndLog("Error: unkown reader function %d",htf);
			PrintAndLog("Hitag reader functions");
			PrintAndLog(" HitagS (0*)");
			PrintAndLog(" Hitag1 (1*)");
			PrintAndLog(" Hitag2 (2*)");
			PrintAndLog("  21 <password> (password mode)");
			PrintAndLog("  22 <nr> <ar> (authentication)");
			PrintAndLog("  23 <key> (authentication) key is in format: ISK high + ISK low");
			PrintAndLog("  25 (test recorded authentications)");
			return 1;
		} break;
	}

	// Copy the hitag2 function into the first argument
	c.arg[0] = htf;

  // Send the command to the proxmark
  SendCommand(&c);
  
  UsbCommand resp;
  WaitForResponse(CMD_ACK,&resp);
  
  // Check the return status, stored in the first argument
  if (resp.arg[0] == false) return 1;
    
  uint32_t id = bytes_to_num(resp.d.asBytes,4);
  char filename[256];
  FILE* pf = NULL;

  sprintf(filename,"%08x_%04x.ht2",id,(rand() & 0xffff));
  if ((pf = fopen(filename,"wb")) == NULL) {
    PrintAndLog("Error: Could not open file [%s]",filename);
    return 1;
  }
  
  // Write the 48 tag memory bytes to file and finalize
  fwrite(resp.d.asBytes,1,48,pf);
  fclose(pf);

  PrintAndLog("Succesfully saved tag memory to [%s]",filename);
  
  return 0;
}

static command_t CommandTableHitag[] = 
{
  {"help",    CmdHelp,           1, "This help"},
  {"list",    CmdLFHitagList,    1, "List Hitag trace history"},
  {"reader",  CmdLFHitagReader,  1, "Act like a Hitag Reader"},
  {"sim",     CmdLFHitagSim,     1, "Simulate Hitag transponder"},
  {"snoop",   CmdLFHitagSnoop,   1, "Eavesdrop Hitag communication"},
		{NULL, NULL, 0, NULL}
};

int CmdLFHitag(const char *Cmd)
{
  CmdsParse(CommandTableHitag, Cmd);
  return 0;
}

int CmdHelp(const char *Cmd)
{
  CmdsHelp(CommandTableHitag);
  return 0;
}
Commit	Line	Data
db09cb3a	1	//-----------------------------------------------------------------------------
	2	// Copyright (C) 2012 Roel Verdult
	3	//
	4	// This code is licensed to you under the terms of the GNU GPL, version 2 or,
	5	// at your option, any later version. See the LICENSE.txt file for the text of
	6	// the license.
	7	//-----------------------------------------------------------------------------
	8	// Low frequency Hitag support
	9	//-----------------------------------------------------------------------------
	10
	11	#include <stdio.h>
	12	#include <stdlib.h>
	13	#include <string.h>
	14	#include "data.h"
28fdb04f	15	//#include "proxusb.h"
902cb3c0	16	#include "proxmark3.h"
db09cb3a	17	#include "ui.h"
	18	#include "cmdparser.h"
	19	#include "common.h"
	20	#include "util.h"
	21	#include "hitag2.h"
902cb3c0	22	#include "sleep.h"
902cb3c0	23	#include "cmdmain.h"
db09cb3a	24
	25	static int CmdHelp(const char *Cmd);
	26
	27	int CmdLFHitagList(const char *Cmd)
	28	{
	29	uint8_t got[3000];
	30	GetFromBigBuf(got,sizeof(got),0);
902cb3c0	31	WaitForResponse(CMD_ACK,NULL);
902cb3c0	32
db09cb3a	33	PrintAndLog("recorded activity:");
	34	PrintAndLog(" ETU :rssi: who bytes");
	35	PrintAndLog("---------+----+----+-----------");
	36
	37	int i = 0;
	38	int prev = -1;
	39
ab4da50d	40	char filename[256];
	41	FILE* pf = NULL;
	42
db09cb3a	43	for (;;) {
	44	if(i >= 1900) {
	45	break;
	46	}
	47
	48	bool isResponse;
	49	int timestamp = ((uint32_t )(got+i));
	50	if (timestamp & 0x80000000) {
	51	timestamp &= 0x7fffffff;
	52	isResponse = 1;
	53	} else {
	54	isResponse = 0;
	55	}
	56
	57	int metric = 0;
	58	int parityBits = ((uint32_t )(got+i+4));
	59	// 4 bytes of additional information...
	60	// maximum of 32 additional parity bit information
	61	//
	62	// TODO:
	63	// at each quarter bit period we can send power level (16 levels)
	64	// or each half bit period in 256 levels.
	65
	66	int len = got[i+8];
	67
	68	if (len > 100) {
	69	break;
	70	}
	71	if (i + len >= 1900) {
	72	break;
	73	}
	74
	75	uint8_t *frame = (got+i+9);
	76
	77	// Break and stick with current result if buffer was not completely full
	78	if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
	79
	80	char line[1000] = "";
	81	int j;
	82	for (j = 0; j < len; j++) {
	83	int oddparity = 0x01;
	84	int k;
	85
	86	for (k=0;k<8;k++) {
	87	oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
	88	}
	89
	90	//if((parityBits >> (len - j - 1)) & 0x01) {
	91	if (isResponse && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) {
	92	sprintf(line+(j*4), "%02x! ", frame[j]);
	93	}
	94	else {
	95	sprintf(line+(j*4), "%02x ", frame[j]);
	96	}
	97	}
	98
	99	char metricString[100];
	100	if (isResponse) {
	101	sprintf(metricString, "%3d", metric);
	102	} else {
	103	strcpy(metricString, " ");
	104	}
	105
	106	PrintAndLog(" +%7d: %s: %s %s",
107	(prev < 0 ? 0 : (timestamp - prev)),
108	metricString,
109	(isResponse ? "TAG" : " "),
110	line);
111
2d495a81	112
902cb3c0	113	if (pf) {
2d495a81	114	fprintf(pf," +%7d: %s: %s %s %s",
	115	(prev < 0 ? 0 : (timestamp - prev)),
	116	metricString,
	117	(isResponse ? "TAG" : " "),
	118	line,
	119	"\n");
	120	}
	121
db09cb3a	122	prev = timestamp;
	123	i += (len + 9);
	124	}
2d495a81	125
902cb3c0	126	if (pf) {
2d495a81	127	PrintAndLog("Recorded activity succesfully written to file: %s", filename);
	128	fclose(pf);
	129	}
	130
	131	return 0;
db09cb3a	132	}
	133
	134	int CmdLFHitagSnoop(const char *Cmd) {
	135	UsbCommand c = {CMD_SNOOP_HITAG};
	136	SendCommand(&c);
	137	return 0;
	138	}
	139
	140	int CmdLFHitagSim(const char *Cmd) {
	141	UsbCommand c = {CMD_SIMULATE_HITAG};
bde10a50	142	char filename[256] = { 0x00 };
db09cb3a	143	FILE* pf;
	144	bool tag_mem_supplied;
	145
	146	param_getstr(Cmd,0,filename);
	147
	148	if (strlen(filename) > 0) {
	149	if ((pf = fopen(filename,"rb+")) == NULL) {
	150	PrintAndLog("Error: Could not open file [%s]",filename);
	151	return 1;
	152	}
	153	tag_mem_supplied = true;
	154	fread(c.d.asBytes,48,1,pf);
	155	fclose(pf);
	156	} else {
	157	tag_mem_supplied = false;
	158	}
	159
	160	// Does the tag comes with memory
	161	c.arg[0] = (uint32_t)tag_mem_supplied;
	162
	163	SendCommand(&c);
	164	return 0;
	165	}
	166
	167	int CmdLFHitagReader(const char *Cmd) {
	168	// UsbCommand c = {CMD_READER_HITAG};
	169
	170	// param_get32ex(Cmd,1,0,16);
	171	UsbCommand c = {CMD_READER_HITAG};//, {param_get32ex(Cmd,0,0,10),param_get32ex(Cmd,1,0,16),param_get32ex(Cmd,2,0,16),param_get32ex(Cmd,3,0,16)}};
	172	hitag_data* htd = (hitag_data*)c.d.asBytes;
	173	hitag_function htf = param_get32ex(Cmd,0,0,10);
	174
	175	switch (htf) {
	176	case RHT2F_PASSWORD: {
	177	num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->pwd.password);
	178	} break;
	179	case RHT2F_AUTHENTICATE: {
	180	num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->auth.NrAr);
	181	num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
	182	} break;
bde10a50	183	case RHT2F_CRYPTO: {
	184	num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
	185	// num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
	186	} break;
db09cb3a	187	case RHT2F_TEST_AUTH_ATTEMPTS: {
	188	// No additional parameters needed
	189	} break;
	190	default: {
	191	PrintAndLog("Error: unkown reader function %d",htf);
ab4da50d	192	PrintAndLog("Hitag reader functions");
	193	PrintAndLog(" HitagS (0*)");
	194	PrintAndLog(" Hitag1 (1*)");
	195	PrintAndLog(" Hitag2 (2*)");
	196	PrintAndLog(" 21 <password> (password mode)");
	197	PrintAndLog(" 22 <nr> <ar> (authentication)");
	198	PrintAndLog(" 23 <key> (authentication) key is in format: ISK high + ISK low");
	199	PrintAndLog(" 25 (test recorded authentications)");
db09cb3a	200	return 1;
	201	} break;
	202	}
	203
	204	// Copy the hitag2 function into the first argument
	205	c.arg[0] = htf;
	206
ab4da50d	207	// Send the command to the proxmark
db09cb3a	208	SendCommand(&c);
ab4da50d	209
	210	UsbCommand resp;
	211	WaitForResponse(CMD_ACK,&resp);
	212
	213	// Check the return status, stored in the first argument
	214	if (resp.arg[0] == false) return 1;
	215
	216	uint32_t id = bytes_to_num(resp.d.asBytes,4);
	217	char filename[256];
	218	FILE* pf = NULL;
	219
	220	sprintf(filename,"%08x_%04x.ht2",id,(rand() & 0xffff));
	221	if ((pf = fopen(filename,"wb")) == NULL) {
	222	PrintAndLog("Error: Could not open file [%s]",filename);
	223	return 1;
	224	}
	225
	226	// Write the 48 tag memory bytes to file and finalize
	227	fwrite(resp.d.asBytes,1,48,pf);
	228	fclose(pf);
	229
	230	PrintAndLog("Succesfully saved tag memory to [%s]",filename);
	231
db09cb3a	232	return 0;
	233	}
	234
	235	static command_t CommandTableHitag[] =
	236	{
	237	{"help", CmdHelp, 1, "This help"},
	238	{"list", CmdLFHitagList, 1, "List Hitag trace history"},
	239	{"reader", CmdLFHitagReader, 1, "Act like a Hitag Reader"},
	240	{"sim", CmdLFHitagSim, 1, "Simulate Hitag transponder"},
	241	{"snoop", CmdLFHitagSnoop, 1, "Eavesdrop Hitag communication"},
	242	{NULL, NULL, 0, NULL}
	243	};
	244
	245	int CmdLFHitag(const char *Cmd)
	246	{
	247	CmdsParse(CommandTableHitag, Cmd);
	248	return 0;
	249	}
	250
	251	int CmdHelp(const char *Cmd)
	252	{
	253	CmdsHelp(CommandTableHitag);
	254	return 0;
	255	}