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1 | //----------------------------------------------------------------------------- |
2 | // Copyright (C) 2010 iZsh <izsh at fail0verflow.com> |
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 HID commands |
9 | //----------------------------------------------------------------------------- |
10 | |
7fe9b0b7 |
11 | #include <stdio.h> |
54a942b0 |
12 | #include <string.h> |
902cb3c0 |
13 | #include "proxmark3.h" |
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14 | #include "ui.h" |
15 | #include "graph.h" |
16 | #include "cmdparser.h" |
17 | #include "cmdlfhid.h" |
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18 | #include "util.h" |
19 | #include "cmdmain.h" |
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20 | #include "sleep.h" |
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21 | |
22 | static int CmdHelp(const char *Cmd); |
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23 | |
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24 | int usage_lf_hid_wiegand(void){ |
25 | PrintAndLog("Usage: lf hid wiegand [h] [oem] [FacilityCode] [cardnumber]"); |
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26 | PrintAndLog("This command converts FC/Cardnum to wiegand code"); |
27 | PrintAndLog("Options:"); |
28 | PrintAndLog(" h - This help"); |
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29 | PrintAndLog(" oem - Oem number"); |
30 | PrintAndLog(" facilitynum - Facility number"); |
31 | PrintAndLog(" cardnum - Card number"); |
32 | PrintAndLog("Examples:"); |
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33 | PrintAndLog(" lf hid wiegand 0 101 2001"); |
34 | return 0; |
35 | } |
36 | int usage_lf_hid_brute(void){ |
37 | PrintAndLog("Enables bruteforce of HID readers with specified facility-code."); |
38 | PrintAndLog("Different formatlength is supported"); |
39 | PrintAndLog("This is a incremental attack against reader."); |
40 | PrintAndLog(""); |
41 | PrintAndLog("Usage: lf hid brute <formatlength> <Facility-Code>"); |
42 | PrintAndLog("Options :"); |
c2a714e3 |
43 | PrintAndLog(" <formatlength> - 26|33|34|35|37|40|44|84"); |
44 | PrintAndLog(" <Facility-Code> - 8-bit value HID facility code"); |
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45 | PrintAndLog(""); |
46 | PrintAndLog("Sample : lf hid brute 26 224"); |
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47 | return 0; |
48 | } |
2767fc02 |
49 | /* |
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50 | int CmdHIDDemod(const char *Cmd) |
51 | { |
52 | if (GraphTraceLen < 4800) { |
53 | PrintAndLog("too short; need at least 4800 samples"); |
54 | return 0; |
55 | } |
56 | |
57 | GraphTraceLen = 4800; |
58 | for (int i = 0; i < GraphTraceLen; ++i) { |
59 | if (GraphBuffer[i] < 0) { |
60 | GraphBuffer[i] = 0; |
61 | } else { |
62 | GraphBuffer[i] = 1; |
63 | } |
64 | } |
65 | RepaintGraphWindow(); |
66 | return 0; |
67 | } |
2767fc02 |
68 | */ |
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69 | int CmdHIDDemodFSK(const char *Cmd) { |
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70 | int findone = ( Cmd[0] == '1' ) ? 1 : 0; |
71 | UsbCommand c = {CMD_HID_DEMOD_FSK, {findone, 0 , 0}}; |
72 | clearCommandBuffer(); |
73 | SendCommand(&c); |
74 | return 0; |
7fe9b0b7 |
75 | } |
76 | |
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77 | int CmdHIDSim(const char *Cmd) { |
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78 | unsigned int hi = 0, lo = 0; |
79 | int n = 0, i = 0; |
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80 | |
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81 | while (sscanf(&Cmd[i++], "%1x", &n ) == 1) { |
82 | hi = (hi << 4) | (lo >> 28); |
83 | lo = (lo << 4) | (n & 0xf); |
84 | } |
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85 | |
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86 | PrintAndLog("Emulating tag with ID %x%16x", hi, lo); |
87 | PrintAndLog("Press pm3-button to abort simulation"); |
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88 | |
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89 | UsbCommand c = {CMD_HID_SIM_TAG, {hi, lo, 0}}; |
90 | clearCommandBuffer(); |
91 | SendCommand(&c); |
92 | return 0; |
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93 | } |
94 | |
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95 | int CmdHIDClone(const char *Cmd) { |
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96 | unsigned int hi2 = 0, hi = 0, lo = 0; |
97 | int n = 0, i = 0; |
98 | UsbCommand c; |
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99 | |
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100 | if (strchr(Cmd,'l') != 0) { |
101 | while (sscanf(&Cmd[i++], "%1x", &n ) == 1) { |
102 | hi2 = (hi2 << 4) | (hi >> 28); |
103 | hi = (hi << 4) | (lo >> 28); |
104 | lo = (lo << 4) | (n & 0xf); |
105 | } |
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106 | |
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107 | PrintAndLog("Cloning tag with long ID %x%08x%08x", hi2, hi, lo); |
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108 | |
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109 | c.d.asBytes[0] = 1; |
110 | } else { |
111 | while (sscanf(&Cmd[i++], "%1x", &n ) == 1) { |
112 | hi = (hi << 4) | (lo >> 28); |
113 | lo = (lo << 4) | (n & 0xf); |
114 | } |
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115 | |
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116 | PrintAndLog("Cloning tag with ID %x%08x", hi, lo); |
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117 | |
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118 | hi2 = 0; |
119 | c.d.asBytes[0] = 0; |
120 | } |
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121 | |
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122 | c.cmd = CMD_HID_CLONE_TAG; |
123 | c.arg[0] = hi2; |
124 | c.arg[1] = hi; |
125 | c.arg[2] = lo; |
126 | |
127 | clearCommandBuffer(); |
128 | SendCommand(&c); |
129 | return 0; |
ec09b62d |
130 | } |
131 | |
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132 | static void getParity26(uint32_t *hi, uint32_t *lo){ |
133 | uint32_t result = 0; |
134 | int i; |
135 | // even parity |
136 | for (i = 24;i >= 13;i--) |
137 | result ^= (*lo >> i) & 1; |
138 | // even parity 26th bit |
139 | *lo |= result << 25; |
140 | |
141 | // odd parity |
142 | result = 0; |
143 | for (i = 12;i >= 1;i--) |
144 | result ^= (*lo >> i) & 1; |
145 | *lo |= !result; |
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146 | } |
147 | static void getParity33(uint32_t *hi, uint32_t *lo){ |
148 | |
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149 | } |
150 | static void getParity34(uint32_t *hi, uint32_t *lo){ |
151 | uint32_t result = 0; |
152 | int i; |
153 | |
154 | // even parity |
155 | for (i = 7;i >= 0;i--) |
156 | result ^= (*hi >> i) & i; |
157 | for (i = 31;i >= 24;i--) |
158 | result ^= (*lo >> i) & 1; |
159 | |
160 | *hi |= result << 2; |
161 | |
162 | // odd parity bit |
163 | result = 0; |
164 | for (i = 23;i >= 1;i--) |
165 | result ^= (*lo >> i) & 1; |
166 | |
167 | *lo |= !result; |
168 | } |
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169 | static void getParity35(uint32_t *hi, uint32_t *lo){ |
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170 | } |
171 | static void getParity37S(uint32_t *hi,uint32_t *lo){ |
172 | uint32_t result = 0; |
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173 | int i; |
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174 | |
175 | // even parity |
176 | for (i = 4; i >= 0; i--) |
177 | result ^= (*hi >> i) & 1; |
178 | |
179 | for (i = 31; i >= 20; i--) |
180 | result ^= (*lo >> i) & 1; |
181 | |
182 | *hi |= result; |
183 | |
184 | // odd parity |
185 | result = 0; |
186 | for (i = 19; i >= 1; i--) |
187 | result ^= (*lo >> i) & 1; |
188 | |
189 | *lo |= result; |
190 | } |
191 | static void getParity37H(uint32_t *hi, uint32_t *lo){ |
192 | uint32_t result = 0; |
193 | int i; |
194 | |
195 | // even parity |
196 | for (i = 4;i >= 0;i--) |
197 | result ^= (*hi >> i) & 1; |
198 | for (i = 31;i >= 20;i--) |
199 | result ^= (*lo >> i) & 1; |
200 | *hi |= result << 4; |
201 | |
202 | // odd parity |
203 | result = 0; |
204 | for (i = 19;i >= 1;i--) |
205 | result ^= (*lo >> i) & 1; |
206 | *lo |= result; |
207 | } |
208 | |
209 | static void calc26(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){ |
210 | *lo = ((cardno & 0xFFFF) << 1) | ((fc & 0xFF) << 17) | (1 << 26); |
211 | *hi = (1 << 5); |
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212 | } |
213 | static void calc33(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){ |
214 | |
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215 | } |
216 | static void calc34(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){ |
217 | // put card number first bit 1 .. 20 // |
218 | *lo = ((cardno & 0X000F7FFF) << 1) | ((fc & 0XFFFF) << 17); |
219 | // set bit format for less than 37 bit format |
220 | *hi = (1 << 5) | (fc >> 15); |
221 | } |
222 | static void calc35(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){ |
223 | *lo = ((cardno & 0xFFFFF) << 1) | fc << 21; |
224 | *hi = (1 << 5) | ((fc >> 11) & 1); |
225 | } |
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226 | static void calc37S(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){ |
227 | // FC 2 - 17 - 16 bit |
228 | // cardno 18 - 36 - 19 bit |
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229 | // Even P1 1 - 19 |
230 | // Odd P37 19 - 36 |
231 | |
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232 | fc = fc & 0xFFFF; |
233 | *lo = ((fc << 20) | (cardno & 0x7FFFF) << 1); |
234 | *hi = (fc >> 12); |
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235 | } |
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236 | static void calc37H(uint64_t cardno, uint32_t *hi, uint32_t *lo){ |
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237 | // SC NONE |
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238 | // cardno 1-35 34 bits |
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239 | // Even Parity 0th bit 1-18 |
240 | // Odd Parity 36th bit 19-35 |
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241 | cardno = (cardno & 0x00000003FFFFFFFF); |
242 | *lo = (cardno << 1); |
243 | *hi = (cardno >> 31); |
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244 | } |
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245 | static void calc40(uint64_t cardno, uint32_t *hi, uint32_t *lo){ |
246 | cardno = (cardno & 0xFFFFFFFFFF); |
247 | *lo = ((cardno & 0xFFFFFFFF) << 1 ); |
248 | *hi = (cardno >> 31); |
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249 | } |
250 | |
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251 | static void calcWiegand(uint8_t fmtlen, uint16_t fc, uint64_t cardno, uint32_t *hi, uint32_t *lo){ |
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252 | |
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253 | uint32_t cn = (cardno & 0xFFFFFFFF); |
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254 | switch ( fmtlen ) { |
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255 | case 26 : { |
256 | calc26(fc, cn, hi, lo); |
257 | getParity26(hi, lo); |
258 | break; |
259 | } |
260 | case 33 : { |
261 | calc33(fc, cn, hi, lo); |
262 | getParity33(hi, lo); |
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263 | break; |
264 | } |
265 | case 34 : { |
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266 | calc34(fc, cn, hi, lo); |
267 | getParity34(hi, lo); |
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268 | break; |
269 | } |
270 | case 35 : { |
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271 | calc35(fc, cn, hi, lo); |
272 | getParity35(hi, lo); |
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273 | break; |
274 | } |
275 | case 37 : { |
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276 | calc37S(fc, cn, hi, lo); |
277 | getParity37S(hi, lo); |
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278 | break; |
279 | } |
280 | case 38 : { |
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281 | calc37H(cn, hi, lo); |
282 | getParity37H(hi, lo); |
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283 | break; |
284 | } |
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285 | case 40 : calc40(cardno, hi, lo); break; |
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286 | case 44 : { break; } |
287 | case 84 : { break; } |
288 | } |
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289 | } |
290 | |
291 | int CmdHIDWiegand(const char *Cmd) { |
292 | uint32_t oem; |
293 | uint32_t fc, lo = 0, hi = 0; |
294 | uint64_t cardnum = 0; |
295 | |
296 | uint8_t ctmp = param_getchar(Cmd, 0); |
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297 | if ( strlen(Cmd) == 0 || strlen(Cmd) < 3 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_hid_wiegand(); |
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298 | |
299 | oem = param_get8(Cmd, 0); |
300 | fc = param_get32ex(Cmd, 1, 0, 10); |
301 | cardnum = param_get64ex(Cmd, 2, 0, 10); |
302 | |
303 | uint8_t ftmlen[] = {26,33,34,35,37,38,40}; |
304 | for (uint8_t i = 0; i < sizeof(ftmlen); i++){ |
305 | calcWiegand( ftmlen[i], fc, cardnum, &hi, &lo); |
306 | PrintAndLog("HID %d bit | FC: %d CN: %llu | Wiegand Code: %08X%08X", ftmlen[i], fc, cardnum, hi, lo); |
307 | } |
308 | return 0; |
309 | } |
310 | |
311 | int CmdHIDBrute(const char *Cmd){ |
312 | |
e1ad67ea |
313 | bool error = TRUE; |
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314 | uint8_t fc = 0, fmtlen = 0; |
315 | uint32_t hi = 0, lo = 0; |
316 | |
317 | UsbCommand c = {CMD_HID_SIM_TAG, {0, 0, 0}}; |
318 | |
319 | char cmdp = param_getchar(Cmd, 0); |
320 | if (strlen(Cmd) > 2 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_hid_brute(); |
321 | |
322 | fmtlen = param_get8(Cmd, 0); |
e1ad67ea |
323 | uint8_t ftms[] = {26,33,34,35,37}; |
324 | for ( uint8_t i = 0; i < sizeof(ftms); i++){ |
325 | if ( ftms[i] == fmtlen ) { |
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326 | error = FALSE; |
3a532acf |
327 | } |
328 | } |
e1ad67ea |
329 | |
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330 | if ( error ) return usage_lf_hid_brute(); |
331 | |
332 | fc = param_get8(Cmd, 1); |
333 | if ( fc == 0) return usage_lf_hid_brute(); |
334 | |
335 | PrintAndLog("Bruteforceing HID Reader"); |
336 | PrintAndLog("Press pm3-button to abort simulation or run another command"); |
337 | |
338 | for ( uint16_t cn = 1; cn < 0xFFFF; ++cn){ |
339 | if (ukbhit()) { |
340 | PrintAndLog("aborted via keyboard!"); |
341 | c.cmd = CMD_PING; |
342 | c.arg[0] = 0x00; |
343 | c.arg[1] = 0x00; |
344 | c.arg[2] = 0x00; |
345 | clearCommandBuffer(); |
346 | SendCommand(&c); |
347 | return 1; |
348 | } |
349 | |
350 | calcWiegand( fmtlen, fc, cn, &hi, &lo); |
351 | |
352 | c.arg[0] = hi; |
353 | c.arg[1] = lo; |
354 | clearCommandBuffer(); |
355 | SendCommand(&c); |
356 | |
357 | PrintAndLog("Trying FC: %u; CN: %u", fc, cn); |
358 | // pause |
359 | sleep(1); |
360 | } |
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361 | return 0; |
362 | } |
363 | |
364 | static command_t CommandTable[] = { |
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365 | {"help", CmdHelp, 1, "This help"}, |
366 | //{"demod", CmdHIDDemod, 1, "Demodulate HID Prox Card II (not optimal)"}, |
367 | {"fskdemod",CmdHIDDemodFSK, 0, "['1'] Realtime HID FSK demodulator (option '1' for one tag only)"}, |
368 | {"sim", CmdHIDSim, 0, "<ID> -- HID tag simulator"}, |
369 | {"clone", CmdHIDClone, 0, "<ID> ['l'] -- Clone HID to T55x7 (tag must be in antenna)(option 'l' for 84bit ID)"}, |
370 | {"wiegand", CmdHIDWiegand, 0, "<oem> <fc> <cardnum> -- convert facilitycode, cardnumber to Wiegand code"}, |
371 | {"brute", CmdHIDBrute, 0, "<formatlength> <Facility-Code> -- bruteforce card number"}, |
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372 | {NULL, NULL, 0, NULL} |
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373 | }; |
374 | |
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375 | int CmdLFHID(const char *Cmd) { |
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376 | clearCommandBuffer(); |
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377 | CmdsParse(CommandTable, Cmd); |
378 | return 0; |
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379 | } |
380 | |
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381 | int CmdHelp(const char *Cmd) { |
382 | CmdsHelp(CommandTable); |
383 | return 0; |
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384 | } |