hitag2 write (#310)
[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"
1f065e1d 20#include "parity.h"
db09cb3a 21#include "hitag2.h"
4e12287d 22#include "hitagS.h"
902cb3c0 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
db09cb3a 31int CmdLFHitagList(const char *Cmd)
32{
f71f4deb 33 uint8_t *got = malloc(USB_CMD_DATA_SIZE);
34
35 // Query for the actual size of the trace
36 UsbCommand response;
37 GetFromBigBuf(got, USB_CMD_DATA_SIZE, 0);
38 WaitForResponse(CMD_ACK, &response);
39 uint16_t traceLen = response.arg[2];
40 if (traceLen > USB_CMD_DATA_SIZE) {
41 uint8_t *p = realloc(got, traceLen);
42 if (p == NULL) {
43 PrintAndLog("Cannot allocate memory for trace");
44 free(got);
45 return 2;
46 }
47 got = p;
48 GetFromBigBuf(got, traceLen, 0);
49 WaitForResponse(CMD_ACK,NULL);
50 }
51
52 PrintAndLog("recorded activity (TraceLen = %d bytes):");
53 PrintAndLog(" ETU :nbits: who bytes");
54 PrintAndLog("---------+-----+----+-----------");
db09cb3a 55
f71f4deb 56 int i = 0;
57 int prev = -1;
58 int len = strlen(Cmd);
b915fda3 59
f71f4deb 60 char filename[FILE_PATH_SIZE] = { 0x00 };
61 FILE* pf = NULL;
b915fda3 62
f71f4deb 63 if (len > FILE_PATH_SIZE)
64 len = FILE_PATH_SIZE;
65 memcpy(filename, Cmd, len);
b915fda3 66
f71f4deb 67 if (strlen(filename) > 0) {
68 if ((pf = fopen(filename,"wb")) == NULL) {
69 PrintAndLog("Error: Could not open file [%s]",filename);
70 return 1;
71 }
b915fda3 72 }
db09cb3a 73
f71f4deb 74 for (;;) {
b915fda3 75
f71f4deb 76 if(i > traceLen) { break; }
77
78 bool isResponse;
79 int timestamp = *((uint32_t *)(got+i));
80 if (timestamp & 0x80000000) {
81 timestamp &= 0x7fffffff;
82 isResponse = 1;
83 } else {
84 isResponse = 0;
85 }
86
87 int parityBits = *((uint32_t *)(got+i+4));
88 // 4 bytes of additional information...
89 // maximum of 32 additional parity bit information
90 //
91 // TODO:
92 // at each quarter bit period we can send power level (16 levels)
93 // or each half bit period in 256 levels.
94
95 int bits = got[i+8];
96 int len = nbytes(got[i+8]);
97
98 if (len > 100) {
99 break;
100 }
101 if (i + len > traceLen) { break;}
102
103 uint8_t *frame = (got+i+9);
104
105 // Break and stick with current result if buffer was not completely full
106 if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
107
108 char line[1000] = "";
109 int j;
110 for (j = 0; j < len; j++) {
f71f4deb 111
112 //if((parityBits >> (len - j - 1)) & 0x01) {
1f065e1d 113 if (isResponse && (oddparity8(frame[j]) != ((parityBits >> (len - j - 1)) & 0x01))) {
f71f4deb 114 sprintf(line+(j*4), "%02x! ", frame[j]);
115 }
116 else {
117 sprintf(line+(j*4), "%02x ", frame[j]);
118 }
119 }
120
121 PrintAndLog(" +%7d: %3d: %s %s",
122 (prev < 0 ? 0 : (timestamp - prev)),
123 bits,
124 (isResponse ? "TAG" : " "),
125 line);
126
127 if (pf) {
128 fprintf(pf," +%7d: %3d: %s %s\n",
129 (prev < 0 ? 0 : (timestamp - prev)),
130 bits,
131 (isResponse ? "TAG" : " "),
132 line);
133 }
134
135 prev = timestamp;
136 i += (len + 9);
137 }
2d495a81 138
f71f4deb 139 if (pf) {
140 fclose(pf);
141 PrintAndLog("Recorded activity succesfully written to file: %s", filename);
142 }
97d582a6 143
f71f4deb 144 free(got);
145 return 0;
db09cb3a 146}
147
148int CmdLFHitagSnoop(const char *Cmd) {
149 UsbCommand c = {CMD_SNOOP_HITAG};
150 SendCommand(&c);
151 return 0;
152}
153
154int CmdLFHitagSim(const char *Cmd) {
b915fda3 155
db09cb3a 156 UsbCommand c = {CMD_SIMULATE_HITAG};
b915fda3 157 char filename[FILE_PATH_SIZE] = { 0x00 };
db09cb3a 158 FILE* pf;
159 bool tag_mem_supplied;
b915fda3 160 int len = strlen(Cmd);
161 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
162 memcpy(filename, Cmd, len);
db09cb3a 163
164 if (strlen(filename) > 0) {
165 if ((pf = fopen(filename,"rb+")) == NULL) {
166 PrintAndLog("Error: Could not open file [%s]",filename);
167 return 1;
168 }
169 tag_mem_supplied = true;
759c16b3 170 if (fread(c.d.asBytes,48,1,pf) == 0) {
171 PrintAndLog("Error: File reading error");
90e278d3 172 fclose(pf);
759c16b3 173 return 1;
174 }
db09cb3a 175 fclose(pf);
176 } else {
177 tag_mem_supplied = false;
178 }
179
180 // Does the tag comes with memory
181 c.arg[0] = (uint32_t)tag_mem_supplied;
182
183 SendCommand(&c);
184 return 0;
185}
186
187int CmdLFHitagReader(const char *Cmd) {
db09cb3a 188 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)}};
189 hitag_data* htd = (hitag_data*)c.d.asBytes;
190 hitag_function htf = param_get32ex(Cmd,0,0,10);
191
192 switch (htf) {
4e12287d
RS
193 case 01: { //RHTSF_CHALLENGE
194 c = (UsbCommand){ CMD_READ_HITAG_S };
195 num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->auth.NrAr);
196 num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
197 } break;
198 case 02: { //RHTSF_KEY
199 c = (UsbCommand){ CMD_READ_HITAG_S };
200 num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
201 } break;
db09cb3a 202 case RHT2F_PASSWORD: {
203 num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->pwd.password);
204 } break;
205 case RHT2F_AUTHENTICATE: {
206 num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->auth.NrAr);
207 num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
208 } break;
bde10a50 209 case RHT2F_CRYPTO: {
210 num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
f86d6b55 211 // num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
bde10a50 212 } break;
db09cb3a 213 case RHT2F_TEST_AUTH_ATTEMPTS: {
214 // No additional parameters needed
215 } break;
f86d6b55 216 case RHT2F_UID_ONLY: {
217 // No additional parameters needed
218 } break;
db09cb3a 219 default: {
f86d6b55 220 PrintAndLog("\nError: unkown reader function %d",htf);
221 PrintAndLog("");
222 PrintAndLog("Usage: hitag reader <Reader Function #>");
223 PrintAndLog("Reader Functions:");
ab4da50d 224 PrintAndLog(" HitagS (0*)");
4e12287d
RS
225 PrintAndLog(" 01 <nr> <ar> (Challenge) read all pages from a Hitag S tag");
226 PrintAndLog(" 02 <key> (set to 0 if no authentication is needed) read all pages from a Hitag S tag");
ab4da50d 227 PrintAndLog(" Hitag1 (1*)");
228 PrintAndLog(" Hitag2 (2*)");
229 PrintAndLog(" 21 <password> (password mode)");
230 PrintAndLog(" 22 <nr> <ar> (authentication)");
231 PrintAndLog(" 23 <key> (authentication) key is in format: ISK high + ISK low");
232 PrintAndLog(" 25 (test recorded authentications)");
f86d6b55 233 PrintAndLog(" 26 just read UID");
db09cb3a 234 return 1;
235 } break;
236 }
237
238 // Copy the hitag2 function into the first argument
239 c.arg[0] = htf;
240
f86d6b55 241 // Send the command to the proxmark
242 SendCommand(&c);
ab4da50d 243
f86d6b55 244 UsbCommand resp;
245 WaitForResponse(CMD_ACK,&resp);
246
247 // Check the return status, stored in the first argument
248 if (resp.arg[0] == false) return 1;
249
250 uint32_t id = bytes_to_num(resp.d.asBytes,4);
251
252 if (htf == RHT2F_UID_ONLY){
253 PrintAndLog("Valid Hitag2 tag found - UID: %08x",id);
254 } else {
255 char filename[256];
256 FILE* pf = NULL;
257
258 sprintf(filename,"%08x_%04x.ht2",id,(rand() & 0xffff));
259 if ((pf = fopen(filename,"wb")) == NULL) {
260 PrintAndLog("Error: Could not open file [%s]",filename);
261 return 1;
262 }
263
264 // Write the 48 tag memory bytes to file and finalize
265 fwrite(resp.d.asBytes,1,48,pf);
266 fclose(pf);
267
268 PrintAndLog("Succesfully saved tag memory to [%s]",filename);
269 }
270
271
272 return 0;
db09cb3a 273}
274
4e12287d
RS
275
276int CmdLFHitagSimS(const char *Cmd) {
277 UsbCommand c = { CMD_SIMULATE_HITAG_S };
278 char filename[FILE_PATH_SIZE] = { 0x00 };
279 FILE* pf;
280 bool tag_mem_supplied;
281 int len = strlen(Cmd);
282 if (len > FILE_PATH_SIZE)
283 len = FILE_PATH_SIZE;
284 memcpy(filename, Cmd, len);
285
286 if (strlen(filename) > 0) {
287 if ((pf = fopen(filename, "rb+")) == NULL) {
288 PrintAndLog("Error: Could not open file [%s]", filename);
289 return 1;
290 }
291 tag_mem_supplied = true;
292 if (fread(c.d.asBytes, 4*64, 1, pf) == 0) {
293 PrintAndLog("Error: File reading error");
294 fclose(pf);
295 return 1;
296 }
297 fclose(pf);
298 } else {
299 tag_mem_supplied = false;
300 }
301
302 // Does the tag comes with memory
303 c.arg[0] = (uint32_t) tag_mem_supplied;
304
305 SendCommand(&c);
306 return 0;
307}
308
309int CmdLFHitagCheckChallenges(const char *Cmd) {
310 UsbCommand c = { CMD_TEST_HITAGS_TRACES };
311 char filename[FILE_PATH_SIZE] = { 0x00 };
312 FILE* pf;
313 bool file_given;
314 int len = strlen(Cmd);
315 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
316 memcpy(filename, Cmd, len);
317
318 if (strlen(filename) > 0) {
319 if ((pf = fopen(filename,"rb+")) == NULL) {
320 PrintAndLog("Error: Could not open file [%s]",filename);
321 return 1;
322 }
323 file_given = true;
324 if (fread(c.d.asBytes,8*60,1,pf) == 0) {
325 PrintAndLog("Error: File reading error");
326 fclose(pf);
327 return 1;
328 }
329 fclose(pf);
330 } else {
331 file_given = false;
332 }
333
334 //file with all the challenges to try
335 c.arg[0] = (uint32_t)file_given;
336
337 SendCommand(&c);
338 return 0;
339}
340
341
342int CmdLFHitagWP(const char *Cmd) {
343 UsbCommand c = { CMD_WR_HITAG_S };
344 hitag_data* htd = (hitag_data*)c.d.asBytes;
345 hitag_function htf = param_get32ex(Cmd,0,0,10);
346 switch (htf) {
347 case 03: { //WHTSF_CHALLENGE
348 num_to_bytes(param_get64ex(Cmd,1,0,16),8,htd->auth.NrAr);
349 c.arg[2]= param_get32ex(Cmd, 2, 0, 10);
350 num_to_bytes(param_get32ex(Cmd,3,0,16),4,htd->auth.data);
351 } break;
52244230
HJ
352 case 04:
353 case 24:
354 { //WHTSF_KEY
4e12287d
RS
355 num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
356 c.arg[2]= param_get32ex(Cmd, 2, 0, 10);
357 num_to_bytes(param_get32ex(Cmd,3,0,16),4,htd->crypto.data);
358
359 } break;
360 default: {
361 PrintAndLog("Error: unkown writer function %d",htf);
362 PrintAndLog("Hitag writer functions");
363 PrintAndLog(" HitagS (0*)");
364 PrintAndLog(" 03 <nr,ar> (Challenge) <page> <byte0...byte3> write page on a Hitag S tag");
365 PrintAndLog(" 04 <key> (set to 0 if no authentication is needed) <page> <byte0...byte3> write page on a Hitag S tag");
366 PrintAndLog(" Hitag1 (1*)");
367 PrintAndLog(" Hitag2 (2*)");
52244230 368 PrintAndLog(" 24 <key> (set to 0 if no authentication is needed) <page> <byte0...byte3> write page on a Hitag S tag");
4e12287d
RS
369 return 1;
370 } break;
371 }
372 // Copy the hitag function into the first argument
373 c.arg[0] = htf;
374
375 // Send the command to the proxmark
376 SendCommand(&c);
377
378 UsbCommand resp;
379 WaitForResponse(CMD_ACK,&resp);
380
381 // Check the return status, stored in the first argument
382 if (resp.arg[0] == false) return 1;
383 return 0;
384}
385
386
3fe4ff4f 387static command_t CommandTable[] =
db09cb3a 388{
4e12287d
RS
389 {"help", CmdHelp, 1, "This help"},
390 {"list", CmdLFHitagList, 1, "<outfile> List Hitag trace history"},
391 {"reader", CmdLFHitagReader, 1, "Act like a Hitag Reader"},
392 {"sim", CmdLFHitagSim, 1, "<infile> Simulate Hitag transponder"},
393 {"snoop", CmdLFHitagSnoop, 1, "Eavesdrop Hitag communication"},
394 {"writer", CmdLFHitagWP, 1, "Act like a Hitag Writer" },
395 {"simS", CmdLFHitagSimS, 1, "<hitagS.hts> Simulate HitagS transponder" },
396 {"checkChallenges", CmdLFHitagCheckChallenges, 1, "<challenges.cc> test all challenges" }, {
397 NULL,NULL, 0, NULL }
db09cb3a 398};
399
400int CmdLFHitag(const char *Cmd)
401{
3fe4ff4f 402 CmdsParse(CommandTable, Cmd);
db09cb3a 403 return 0;
404}
405
406int CmdHelp(const char *Cmd)
407{
3fe4ff4f 408 CmdsHelp(CommandTable);
db09cb3a 409 return 0;
410}
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