[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);

size_t nbytes(size_t nbits) {
	return (nbits/8)+((nbits%8)>0);
}

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

  PrintAndLog("recorded activity:");
  PrintAndLog(" ETU     :nbits: 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 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 bits = got[i+8];
    int len = nbytes(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]);
      }
    }

    PrintAndLog(" +%7d:  %3d: %s %s",
      (prev < 0 ? 0 : (timestamp - prev)),
      bits,
      (isResponse ? "TAG" : "   "),
      line);


   if (pf) {
      fprintf(pf," +%7d:  %3d: %s %s\n",
					(prev < 0 ? 0 : (timestamp - prev)),
					bits,
					(isResponse ? "TAG" : "   "),
					line);
    }
	
    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;
		if (fread(c.d.asBytes,48,1,pf) == 0) {
      PrintAndLog("Error: File reading error");
			return 1;
    }
		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
47e18126	27	size_t nbytes(size_t nbits) {
	28	return (nbits/8)+((nbits%8)>0);
	29	}
	30
db09cb3a	31	int CmdLFHitagList(const char *Cmd)
	32	{
	33	uint8_t got[3000];
	34	GetFromBigBuf(got,sizeof(got),0);
902cb3c0	35	WaitForResponse(CMD_ACK,NULL);
902cb3c0	36
db09cb3a	37	PrintAndLog("recorded activity:");
47e18126	38	PrintAndLog(" ETU :nbits: who bytes");
47e18126	39	PrintAndLog("---------+-----+----+-----------");
db09cb3a	40
	41	int i = 0;
	42	int prev = -1;
	43
ab4da50d	44	char filename[256];
	45	FILE* pf = NULL;
	46
db09cb3a	47	for (;;) {
	48	if(i >= 1900) {
	49	break;
	50	}
	51
	52	bool isResponse;
	53	int timestamp = ((uint32_t )(got+i));
	54	if (timestamp & 0x80000000) {
	55	timestamp &= 0x7fffffff;
	56	isResponse = 1;
	57	} else {
	58	isResponse = 0;
	59	}
	60
db09cb3a	61	int parityBits = ((uint32_t )(got+i+4));
	62	// 4 bytes of additional information...
	63	// maximum of 32 additional parity bit information
	64	//
	65	// TODO:
	66	// at each quarter bit period we can send power level (16 levels)
	67	// or each half bit period in 256 levels.
	68
47e18126	69	int bits = got[i+8];
47e18126	70	int len = nbytes(got[i+8]);
db09cb3a	71
	72	if (len > 100) {
	73	break;
	74	}
	75	if (i + len >= 1900) {
	76	break;
	77	}
	78
	79	uint8_t *frame = (got+i+9);
	80
	81	// Break and stick with current result if buffer was not completely full
	82	if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
	83
	84	char line[1000] = "";
	85	int j;
	86	for (j = 0; j < len; j++) {
	87	int oddparity = 0x01;
	88	int k;
	89
	90	for (k=0;k<8;k++) {
	91	oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
	92	}
	93
	94	//if((parityBits >> (len - j - 1)) & 0x01) {
	95	if (isResponse && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) {
	96	sprintf(line+(j*4), "%02x! ", frame[j]);
	97	}
	98	else {
	99	sprintf(line+(j*4), "%02x ", frame[j]);
	100	}
	101	}
	102
47e18126	103	PrintAndLog(" +%7d: %3d: %s %s",
db09cb3a	104	(prev < 0 ? 0 : (timestamp - prev)),
47e18126	105	bits,
db09cb3a	106	(isResponse ? "TAG" : " "),
	107	line);
	108
2d495a81	109
902cb3c0	110	if (pf) {
47e18126	111	fprintf(pf," +%7d: %3d: %s %s\n",
2d495a81	112	(prev < 0 ? 0 : (timestamp - prev)),
47e18126	113	bits,
2d495a81	114	(isResponse ? "TAG" : " "),
47e18126	115	line);
2d495a81	116	}
2d495a81	117
db09cb3a	118	prev = timestamp;
	119	i += (len + 9);
	120	}
2d495a81	121
902cb3c0	122	if (pf) {
2d495a81	123	PrintAndLog("Recorded activity succesfully written to file: %s", filename);
	124	fclose(pf);
	125	}
	126
	127	return 0;
db09cb3a	128	}
	129
	130	int CmdLFHitagSnoop(const char *Cmd) {
	131	UsbCommand c = {CMD_SNOOP_HITAG};
	132	SendCommand(&c);
	133	return 0;
	134	}
	135
	136	int CmdLFHitagSim(const char *Cmd) {
	137	UsbCommand c = {CMD_SIMULATE_HITAG};
bde10a50	138	char filename[256] = { 0x00 };
db09cb3a	139	FILE* pf;
	140	bool tag_mem_supplied;
	141
	142	param_getstr(Cmd,0,filename);
	143
	144	if (strlen(filename) > 0) {
	145	if ((pf = fopen(filename,"rb+")) == NULL) {
	146	PrintAndLog("Error: Could not open file [%s]",filename);
	147	return 1;
	148	}
	149	tag_mem_supplied = true;
759c16b3	150	if (fread(c.d.asBytes,48,1,pf) == 0) {
	151	PrintAndLog("Error: File reading error");
	152	return 1;
	153	}
db09cb3a	154	fclose(pf);
	155	} else {
	156	tag_mem_supplied = false;
	157	}
	158
	159	// Does the tag comes with memory
	160	c.arg[0] = (uint32_t)tag_mem_supplied;
	161
	162	SendCommand(&c);
	163	return 0;
	164	}
	165
	166	int CmdLFHitagReader(const char *Cmd) {
	167	// UsbCommand c = {CMD_READER_HITAG};
	168
	169	// param_get32ex(Cmd,1,0,16);
	170	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)}};
	171	hitag_data* htd = (hitag_data*)c.d.asBytes;
	172	hitag_function htf = param_get32ex(Cmd,0,0,10);
	173
	174	switch (htf) {
	175	case RHT2F_PASSWORD: {
	176	num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->pwd.password);
	177	} break;
	178	case RHT2F_AUTHENTICATE: {
	179	num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->auth.NrAr);
	180	num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
	181	} break;
bde10a50	182	case RHT2F_CRYPTO: {
	183	num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
	184	// num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
	185	} break;
db09cb3a	186	case RHT2F_TEST_AUTH_ATTEMPTS: {
	187	// No additional parameters needed
	188	} break;
	189	default: {
	190	PrintAndLog("Error: unkown reader function %d",htf);
ab4da50d	191	PrintAndLog("Hitag reader functions");
	192	PrintAndLog(" HitagS (0*)");
	193	PrintAndLog(" Hitag1 (1*)");
	194	PrintAndLog(" Hitag2 (2*)");
	195	PrintAndLog(" 21 <password> (password mode)");
	196	PrintAndLog(" 22 <nr> <ar> (authentication)");
	197	PrintAndLog(" 23 <key> (authentication) key is in format: ISK high + ISK low");
	198	PrintAndLog(" 25 (test recorded authentications)");
db09cb3a	199	return 1;
	200	} break;
	201	}
	202
	203	// Copy the hitag2 function into the first argument
	204	c.arg[0] = htf;
	205
ab4da50d	206	// Send the command to the proxmark
db09cb3a	207	SendCommand(&c);
ab4da50d	208
	209	UsbCommand resp;
	210	WaitForResponse(CMD_ACK,&resp);
	211
	212	// Check the return status, stored in the first argument
	213	if (resp.arg[0] == false) return 1;
	214
	215	uint32_t id = bytes_to_num(resp.d.asBytes,4);
	216	char filename[256];
	217	FILE* pf = NULL;
	218
	219	sprintf(filename,"%08x_%04x.ht2",id,(rand() & 0xffff));
	220	if ((pf = fopen(filename,"wb")) == NULL) {
	221	PrintAndLog("Error: Could not open file [%s]",filename);
	222	return 1;
	223	}
	224
	225	// Write the 48 tag memory bytes to file and finalize
	226	fwrite(resp.d.asBytes,1,48,pf);
	227	fclose(pf);
	228
	229	PrintAndLog("Succesfully saved tag memory to [%s]",filename);
	230
db09cb3a	231	return 0;
	232	}
	233
	234	static command_t CommandTableHitag[] =
	235	{
	236	{"help", CmdHelp, 1, "This help"},
	237	{"list", CmdLFHitagList, 1, "List Hitag trace history"},
	238	{"reader", CmdLFHitagReader, 1, "Act like a Hitag Reader"},
	239	{"sim", CmdLFHitagSim, 1, "Simulate Hitag transponder"},
	240	{"snoop", CmdLFHitagSnoop, 1, "Eavesdrop Hitag communication"},
	241	{NULL, NULL, 0, NULL}
	242	};
	243
	244	int CmdLFHitag(const char *Cmd)
	245	{
	246	CmdsParse(CommandTableHitag, Cmd);
	247	return 0;
	248	}
	249
	250	int CmdHelp(const char *Cmd)
	251	{
	252	CmdsHelp(CommandTableHitag);
	253	return 0;
	254	}