]> git.zerfleddert.de Git - proxmark3-svn/blame - client/cmdlfhitag.c
BUG: forgot to remove
[proxmark3-svn] / client / cmdlfhitag.c
CommitLineData
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"
902cb3c0 15#include "proxmark3.h"
db09cb3a 16#include "ui.h"
17#include "cmdparser.h"
18#include "common.h"
19#include "util.h"
20#include "hitag2.h"
0db11b71 21#include "hitagS.h"
902cb3c0 22#include "sleep.h"
23#include "cmdmain.h"
db09cb3a 24
25static int CmdHelp(const char *Cmd);
26
47e18126 27size_t nbytes(size_t nbits) {
28 return (nbits/8)+((nbits%8)>0);
29}
30
cd777a05 31int CmdLFHitagList(const char *Cmd) {
f71f4deb 32 uint8_t *got = malloc(USB_CMD_DATA_SIZE);
33
34 // Query for the actual size of the trace
35 UsbCommand response;
36 GetFromBigBuf(got, USB_CMD_DATA_SIZE, 0);
37 WaitForResponse(CMD_ACK, &response);
38 uint16_t traceLen = response.arg[2];
39 if (traceLen > USB_CMD_DATA_SIZE) {
40 uint8_t *p = realloc(got, traceLen);
41 if (p == NULL) {
42 PrintAndLog("Cannot allocate memory for trace");
43 free(got);
44 return 2;
45 }
46 got = p;
47 GetFromBigBuf(got, traceLen, 0);
48 WaitForResponse(CMD_ACK,NULL);
49 }
50
51 PrintAndLog("recorded activity (TraceLen = %d bytes):");
52 PrintAndLog(" ETU :nbits: who bytes");
53 PrintAndLog("---------+-----+----+-----------");
db09cb3a 54
f71f4deb 55 int i = 0;
56 int prev = -1;
57 int len = strlen(Cmd);
b915fda3 58
f71f4deb 59 char filename[FILE_PATH_SIZE] = { 0x00 };
cd777a05 60 FILE* f = NULL;
b915fda3 61
09181a54 62 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
f71f4deb 63 memcpy(filename, Cmd, len);
b915fda3 64
f71f4deb 65 if (strlen(filename) > 0) {
cd777a05 66 f = fopen(filename,"wb");
67 if (!f) {
f71f4deb 68 PrintAndLog("Error: Could not open file [%s]",filename);
69 return 1;
70 }
b915fda3 71 }
db09cb3a 72
f71f4deb 73 for (;;) {
b915fda3 74
ab7bb494 75 if(i >= traceLen) { break; }
f71f4deb 76
77 bool isResponse;
78 int timestamp = *((uint32_t *)(got+i));
79 if (timestamp & 0x80000000) {
80 timestamp &= 0x7fffffff;
81 isResponse = 1;
82 } else {
83 isResponse = 0;
84 }
85
86 int parityBits = *((uint32_t *)(got+i+4));
87 // 4 bytes of additional information...
88 // maximum of 32 additional parity bit information
89 //
90 // TODO:
91 // at each quarter bit period we can send power level (16 levels)
92 // or each half bit period in 256 levels.
93
94 int bits = got[i+8];
95 int len = nbytes(got[i+8]);
96
97 if (len > 100) {
98 break;
99 }
100 if (i + len > traceLen) { break;}
101
102 uint8_t *frame = (got+i+9);
103
104 // Break and stick with current result if buffer was not completely full
105 if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
106
107 char line[1000] = "";
108 int j;
109 for (j = 0; j < len; j++) {
110 int oddparity = 0x01;
111 int k;
112
113 for (k=0;k<8;k++) {
114 oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
115 }
116
117 //if((parityBits >> (len - j - 1)) & 0x01) {
118 if (isResponse && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) {
119 sprintf(line+(j*4), "%02x! ", frame[j]);
120 }
121 else {
122 sprintf(line+(j*4), "%02x ", frame[j]);
123 }
124 }
125
126 PrintAndLog(" +%7d: %3d: %s %s",
127 (prev < 0 ? 0 : (timestamp - prev)),
128 bits,
129 (isResponse ? "TAG" : " "),
130 line);
131
cd777a05 132 if (f) {
133 fprintf(f," +%7d: %3d: %s %s\n",
f71f4deb 134 (prev < 0 ? 0 : (timestamp - prev)),
135 bits,
136 (isResponse ? "TAG" : " "),
137 line);
138 }
139
140 prev = timestamp;
141 i += (len + 9);
142 }
2d495a81 143
cd777a05 144 if (f) {
145 fclose(f);
f71f4deb 146 PrintAndLog("Recorded activity succesfully written to file: %s", filename);
147 }
97d582a6 148
f71f4deb 149 free(got);
150 return 0;
db09cb3a 151}
152
153int CmdLFHitagSnoop(const char *Cmd) {
09181a54 154 UsbCommand c = {CMD_SNOOP_HITAG};
155 clearCommandBuffer();
156 SendCommand(&c);
157 return 0;
db09cb3a 158}
159
160int CmdLFHitagSim(const char *Cmd) {
b915fda3 161
09181a54 162 UsbCommand c = {CMD_SIMULATE_HITAG};
b915fda3 163 char filename[FILE_PATH_SIZE] = { 0x00 };
cd777a05 164 FILE* f;
db09cb3a 165 bool tag_mem_supplied;
09181a54 166
b915fda3 167 int len = strlen(Cmd);
168 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
169 memcpy(filename, Cmd, len);
09181a54 170
db09cb3a 171 if (strlen(filename) > 0) {
cd777a05 172 f = fopen(filename,"rb+");
173 if (!f) {
db09cb3a 174 PrintAndLog("Error: Could not open file [%s]",filename);
175 return 1;
176 }
177 tag_mem_supplied = true;
cd777a05 178 size_t bytes_read = fread(c.d.asBytes, 48, 1, f);
841d7af0 179 if ( bytes_read == 0) {
09181a54 180 PrintAndLog("Error: File reading error");
cd777a05 181 fclose(f);
759c16b3 182 return 1;
09181a54 183 }
cd777a05 184 fclose(f);
db09cb3a 185 } else {
186 tag_mem_supplied = false;
187 }
09181a54 188
db09cb3a 189 // Does the tag comes with memory
190 c.arg[0] = (uint32_t)tag_mem_supplied;
09181a54 191 clearCommandBuffer();
192 SendCommand(&c);
193 return 0;
db09cb3a 194}
195
196int CmdLFHitagReader(const char *Cmd) {
db09cb3a 197
bdf387c7 198 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)}};
db09cb3a 199 hitag_data* htd = (hitag_data*)c.d.asBytes;
bdf387c7 200 hitag_function htf = param_get32ex(Cmd, 0, 0, 10);
db09cb3a 201
202 switch (htf) {
0db11b71 203 case 01: { //RHTSF_CHALLENGE
204 c = (UsbCommand){ CMD_READ_HITAG_S };
205 num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->auth.NrAr);
206 num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
207 } break;
208 case 02: { //RHTSF_KEY
209 c = (UsbCommand){ CMD_READ_HITAG_S };
210 num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
211 } break;
db09cb3a 212 case RHT2F_PASSWORD: {
213 num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->pwd.password);
214 } break;
215 case RHT2F_AUTHENTICATE: {
216 num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->auth.NrAr);
217 num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
218 } break;
bde10a50 219 case RHT2F_CRYPTO: {
220 num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
bde10a50 221 } break;
db09cb3a 222 case RHT2F_TEST_AUTH_ATTEMPTS: {
223 // No additional parameters needed
224 } break;
1b75698c 225 case RHT2F_UID_ONLY: {
226 // No additional parameters needed
227 } break;
db09cb3a 228 default: {
1b75698c 229 PrintAndLog("\nError: unkown reader function %d",htf);
230 PrintAndLog("");
231 PrintAndLog("Usage: hitag reader <Reader Function #>");
232 PrintAndLog("Reader Functions:");
ab4da50d 233 PrintAndLog(" HitagS (0*)");
0db11b71 234 PrintAndLog(" 01 <nr> <ar> (Challenge) read all pages from a Hitag S tag");
235 PrintAndLog(" 02 <key> (set to 0 if no authentication is needed) read all pages from a Hitag S tag");
ab4da50d 236 PrintAndLog(" Hitag1 (1*)");
237 PrintAndLog(" Hitag2 (2*)");
238 PrintAndLog(" 21 <password> (password mode)");
239 PrintAndLog(" 22 <nr> <ar> (authentication)");
240 PrintAndLog(" 23 <key> (authentication) key is in format: ISK high + ISK low");
241 PrintAndLog(" 25 (test recorded authentications)");
1b75698c 242 PrintAndLog(" 26 just read UID");
db09cb3a 243 return 1;
244 } break;
245 }
246
247 // Copy the hitag2 function into the first argument
248 c.arg[0] = htf;
09181a54 249 clearCommandBuffer();
09181a54 250 SendCommand(&c);
09181a54 251 UsbCommand resp;
bdf387c7 252 WaitForResponse(CMD_ACK, &resp);
09181a54 253
254 // Check the return status, stored in the first argument
255 if (resp.arg[0] == false) return 1;
256
257 uint32_t id = bytes_to_num(resp.d.asBytes,4);
09181a54 258
1b75698c 259 if (htf == RHT2F_UID_ONLY){
260 PrintAndLog("Valid Hitag2 tag found - UID: %08x",id);
261 } else {
bdf387c7 262 char filename[FILE_PATH_SIZE];
263 FILE* f = NULL;
264 sprintf(filename,"%08x_%04x.ht2",id,(rand() & 0xffff));
265 f = fopen(filename,"wb");
266 if (!f) {
267 PrintAndLog("Error: Could not open file [%s]",filename);
268 return 1;
269 }
09181a54 270
bdf387c7 271 // Write the 48 tag memory bytes to file and finalize
272 fwrite(resp.d.asBytes, 1, 48, f);
273 fclose(f);
274 PrintAndLog("Succesfully saved tag memory to [%s]",filename);
1b75698c 275 }
09181a54 276 return 0;
db09cb3a 277}
278
0db11b71 279int CmdLFHitagSimS(const char *Cmd) {
280 UsbCommand c = { CMD_SIMULATE_HITAG_S };
281 char filename[FILE_PATH_SIZE] = { 0x00 };
cd777a05 282 FILE* f;
0db11b71 283 bool tag_mem_supplied;
284 int len = strlen(Cmd);
285 if (len > FILE_PATH_SIZE)
286 len = FILE_PATH_SIZE;
287 memcpy(filename, Cmd, len);
288
289 if (strlen(filename) > 0) {
cd777a05 290 f = fopen(filename, "rb+");
291 if (!f) {
0db11b71 292 PrintAndLog("Error: Could not open file [%s]", filename);
293 return 1;
294 }
295 tag_mem_supplied = true;
cd777a05 296 size_t bytes_read = fread(c.d.asBytes, 4*64, 1, f);
297 if ( bytes_read == 0) {
0db11b71 298 PrintAndLog("Error: File reading error");
cd777a05 299 fclose(f);
0db11b71 300 return 1;
301 }
cd777a05 302 fclose(f);
0db11b71 303 } else {
304 tag_mem_supplied = false;
305 }
306
307 // Does the tag comes with memory
308 c.arg[0] = (uint32_t) tag_mem_supplied;
cd777a05 309 clearCommandBuffer();
0db11b71 310 SendCommand(&c);
311 return 0;
312}
313
314int CmdLFHitagCheckChallenges(const char *Cmd) {
315 UsbCommand c = { CMD_TEST_HITAGS_TRACES };
316 char filename[FILE_PATH_SIZE] = { 0x00 };
cd777a05 317 FILE* f;
0db11b71 318 bool file_given;
319 int len = strlen(Cmd);
320 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
321 memcpy(filename, Cmd, len);
322
323 if (strlen(filename) > 0) {
cd777a05 324 f = fopen(filename,"rb+");
325 if( !f ) {
326 PrintAndLog("Error: Could not open file [%s]", filename);
0db11b71 327 return 1;
328 }
329 file_given = true;
cd777a05 330 size_t bytes_read = fread(c.d.asBytes, 8*60, 1, f);
331 if ( bytes_read == 0) {
332 PrintAndLog("Error: File reading error");
333 fclose(f);
0db11b71 334 return 1;
335 }
cd777a05 336 fclose(f);
0db11b71 337 } else {
338 file_given = false;
339 }
340
341 //file with all the challenges to try
342 c.arg[0] = (uint32_t)file_given;
cd777a05 343 clearCommandBuffer();
344 SendCommand(&c);
345 return 0;
0db11b71 346}
347
0db11b71 348int CmdLFHitagWP(const char *Cmd) {
349 UsbCommand c = { CMD_WR_HITAG_S };
350 hitag_data* htd = (hitag_data*)c.d.asBytes;
351 hitag_function htf = param_get32ex(Cmd,0,0,10);
352 switch (htf) {
353 case 03: { //WHTSF_CHALLENGE
354 num_to_bytes(param_get64ex(Cmd,1,0,16),8,htd->auth.NrAr);
355 c.arg[2]= param_get32ex(Cmd, 2, 0, 10);
356 num_to_bytes(param_get32ex(Cmd,3,0,16),4,htd->auth.data);
357 } break;
358 case 04: { //WHTSF_KEY
359 num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
360 c.arg[2]= param_get32ex(Cmd, 2, 0, 10);
361 num_to_bytes(param_get32ex(Cmd,3,0,16),4,htd->crypto.data);
362
363 } break;
364 default: {
365 PrintAndLog("Error: unkown writer function %d",htf);
366 PrintAndLog("Hitag writer functions");
367 PrintAndLog(" HitagS (0*)");
368 PrintAndLog(" 03 <nr,ar> (Challenge) <page> <byte0...byte3> write page on a Hitag S tag");
369 PrintAndLog(" 04 <key> (set to 0 if no authentication is needed) <page> <byte0...byte3> write page on a Hitag S tag");
370 PrintAndLog(" Hitag1 (1*)");
371 PrintAndLog(" Hitag2 (2*)");
372 return 1;
373 } break;
374 }
375 // Copy the hitag function into the first argument
376 c.arg[0] = htf;
377
cd777a05 378 clearCommandBuffer();
379 SendCommand(&c);
380 UsbCommand resp;
381 WaitForResponse(CMD_ACK,&resp);
0db11b71 382
cd777a05 383 // Check the return status, stored in the first argument
384 if (resp.arg[0] == false) return 1;
385 return 0;
386}
0db11b71 387
388static command_t CommandTable[] =
389{
09181a54 390 {"help", CmdHelp, 1, "This help"},
391 {"list", CmdLFHitagList, 1, "<outfile> List Hitag trace history"},
392 {"reader", CmdLFHitagReader, 1, "Act like a Hitag Reader"},
393 {"sim", CmdLFHitagSim, 1, "<infile> Simulate Hitag transponder"},
394 {"snoop", CmdLFHitagSnoop, 1, "Eavesdrop Hitag communication"},
0db11b71 395 {"writer", CmdLFHitagWP, 1, "Act like a Hitag Writer" },
396 {"simS", CmdLFHitagSimS, 1, "<hitagS.hts> Simulate HitagS transponder" },
397 {"checkChallenges", CmdLFHitagCheckChallenges, 1, "<challenges.cc> test all challenges" }, {
398 NULL,NULL, 0, NULL }
db09cb3a 399};
400
4c36581b 401int CmdLFHitag(const char *Cmd) {
402 clearCommandBuffer();
09181a54 403 CmdsParse(CommandTable, Cmd);
404 return 0;
db09cb3a 405}
406
4c36581b 407int CmdHelp(const char *Cmd) {
09181a54 408 CmdsHelp(CommandTable);
409 return 0;
db09cb3a 410}
Impressum, Datenschutz