fix appearance
[proxmark3-svn] / client / cmdhflist.c
1 //-----------------------------------------------------------------------------
2 // Copyright (C) Merlok - 2017
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 // Command: hf mf list. It shows data from arm buffer.
9 //-----------------------------------------------------------------------------
10
11 #include "cmdhflist.h"
12
13 #include <stdlib.h>
14 #include <stdio.h>
15 #include <string.h>
16 #include <stdint.h>
17 #include <stdbool.h>
18 #include "util.h"
19 #include "data.h"
20 #include "ui.h"
21 #include "iso14443crc.h"
22 #include "parity.h"
23 #include "protocols.h"
24 #include "crapto1/crapto1.h"
25 #include "mifarehost.h"
26
27
28 enum MifareAuthSeq {
29 masNone,
30 masNt,
31 masNrAr,
32 masAt,
33 masFirstData,
34 masData,
35 masDataNested,
36 masError,
37 };
38 static enum MifareAuthSeq MifareAuthState;
39 static TAuthData AuthData;
40
41 void ClearAuthData() {
42 AuthData.uid = 0;
43 AuthData.nt = 0;
44 AuthData.first_auth = true;
45 }
46
47 /**
48 * @brief iso14443A_CRC_check Checks CRC in command or response
49 * @param isResponse
50 * @param data
51 * @param len
52 * @return 0 : CRC-command, CRC not ok
53 * 1 : CRC-command, CRC ok
54 * 2 : Not crc-command
55 */
56 uint8_t iso14443A_CRC_check(bool isResponse, uint8_t* data, uint8_t len)
57 {
58 uint8_t b1,b2;
59
60 if(len <= 2) return 2;
61
62 if(isResponse & (len < 6)) return 2;
63
64 ComputeCrc14443(CRC_14443_A, data, len-2, &b1, &b2);
65 if (b1 != data[len-2] || b2 != data[len-1]) {
66 return 0;
67 } else {
68 return 1;
69 }
70 }
71
72 uint8_t mifare_CRC_check(bool isResponse, uint8_t* data, uint8_t len)
73 {
74 switch(MifareAuthState) {
75 case masNone:
76 case masFirstData:
77 case masData:
78 case masDataNested:
79 case masError:
80 return iso14443A_CRC_check(isResponse, data, len);
81 default:
82 return 2;
83 }
84 }
85
86 void annotateIso14443a(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize)
87 {
88 switch(cmd[0])
89 {
90 case ISO14443A_CMD_WUPA:
91 snprintf(exp,size,"WUPA");
92 MifareAuthState = masNone;
93 break;
94 case ISO14443A_CMD_ANTICOLL_OR_SELECT:{
95 // 93 20 = Anticollision (usage: 9320 - answer: 4bytes UID+1byte UID-bytes-xor)
96 // 93 70 = Select (usage: 9370+5bytes 9320 answer - answer: 1byte SAK)
97 if(cmd[1] == 0x70)
98 {
99 snprintf(exp,size,"SELECT_UID"); break;
100 }else
101 {
102 snprintf(exp,size,"ANTICOLL"); break;
103 }
104 }
105 case ISO14443A_CMD_ANTICOLL_OR_SELECT_2:{
106 //95 20 = Anticollision of cascade level2
107 //95 70 = Select of cascade level2
108 if(cmd[2] == 0x70)
109 {
110 snprintf(exp,size,"SELECT_UID-2"); break;
111 }else
112 {
113 snprintf(exp,size,"ANTICOLL-2"); break;
114 }
115 }
116 case ISO14443A_CMD_REQA:
117 snprintf(exp,size,"REQA");
118 MifareAuthState = masNone;
119 break;
120 case ISO14443A_CMD_READBLOCK: snprintf(exp,size,"READBLOCK(%d)",cmd[1]); break;
121 case ISO14443A_CMD_WRITEBLOCK: snprintf(exp,size,"WRITEBLOCK(%d)",cmd[1]); break;
122 case ISO14443A_CMD_HALT:
123 snprintf(exp,size,"HALT");
124 MifareAuthState = masNone;
125 break;
126 case ISO14443A_CMD_RATS: snprintf(exp,size,"RATS"); break;
127 case MIFARE_CMD_INC: snprintf(exp,size,"INC(%d)",cmd[1]); break;
128 case MIFARE_CMD_DEC: snprintf(exp,size,"DEC(%d)",cmd[1]); break;
129 case MIFARE_CMD_RESTORE: snprintf(exp,size,"RESTORE(%d)",cmd[1]); break;
130 case MIFARE_CMD_TRANSFER: snprintf(exp,size,"TRANSFER(%d)",cmd[1]); break;
131 case MIFARE_AUTH_KEYA:
132 if ( cmdsize > 3) {
133 snprintf(exp,size,"AUTH-A(%d)",cmd[1]);
134 MifareAuthState = masNt;
135 } else {
136 // case MIFARE_ULEV1_VERSION : both 0x60.
137 snprintf(exp,size,"EV1 VERSION");
138 }
139 break;
140 case MIFARE_AUTH_KEYB:
141 MifareAuthState = masNt;
142 snprintf(exp,size,"AUTH-B(%d)",cmd[1]);
143 break;
144 case MIFARE_MAGICWUPC1: snprintf(exp,size,"MAGIC WUPC1"); break;
145 case MIFARE_MAGICWUPC2: snprintf(exp,size,"MAGIC WUPC2"); break;
146 case MIFARE_MAGICWIPEC: snprintf(exp,size,"MAGIC WIPEC"); break;
147 case MIFARE_ULC_AUTH_1: snprintf(exp,size,"AUTH "); break;
148 case MIFARE_ULC_AUTH_2: snprintf(exp,size,"AUTH_ANSW"); break;
149 case MIFARE_ULEV1_AUTH:
150 if ( cmdsize == 7 )
151 snprintf(exp,size,"PWD-AUTH KEY: 0x%02x%02x%02x%02x", cmd[1], cmd[2], cmd[3], cmd[4] );
152 else
153 snprintf(exp,size,"PWD-AUTH");
154 break;
155 case MIFARE_ULEV1_FASTREAD:{
156 if ( cmdsize >=3 && cmd[2] <= 0xE6)
157 snprintf(exp,size,"READ RANGE (%d-%d)",cmd[1],cmd[2]);
158 else
159 snprintf(exp,size,"?");
160 break;
161 }
162 case MIFARE_ULC_WRITE:{
163 if ( cmd[1] < 0x21 )
164 snprintf(exp,size,"WRITEBLOCK(%d)",cmd[1]);
165 else
166 snprintf(exp,size,"?");
167 break;
168 }
169 case MIFARE_ULEV1_READ_CNT:{
170 if ( cmd[1] < 5 )
171 snprintf(exp,size,"READ CNT(%d)",cmd[1]);
172 else
173 snprintf(exp,size,"?");
174 break;
175 }
176 case MIFARE_ULEV1_INCR_CNT:{
177 if ( cmd[1] < 5 )
178 snprintf(exp,size,"INCR(%d)",cmd[1]);
179 else
180 snprintf(exp,size,"?");
181 break;
182 }
183 case MIFARE_ULEV1_READSIG: snprintf(exp,size,"READ_SIG"); break;
184 case MIFARE_ULEV1_CHECKTEAR: snprintf(exp,size,"CHK_TEARING(%d)",cmd[1]); break;
185 case MIFARE_ULEV1_VCSL: snprintf(exp,size,"VCSL"); break;
186 default: snprintf(exp,size,"?"); break;
187 }
188 return;
189 }
190
191 void annotateMifare(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize, uint8_t* parity, uint8_t paritysize, bool isResponse) {
192 // get UID
193 if (MifareAuthState == masNone) {
194 if (cmdsize == 9 && cmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT && cmd[1] == 0x70) {
195 ClearAuthData();
196 AuthData.uid = bytes_to_num(&cmd[2], 4);
197 }
198 if (cmdsize == 9 && cmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_2 && cmd[1] == 0x70) {
199 ClearAuthData();
200 AuthData.uid = bytes_to_num(&cmd[2], 4);
201 }
202 }
203
204 switch(MifareAuthState) {
205 case masNt:
206 if (cmdsize == 4 && isResponse) {
207 snprintf(exp,size,"AUTH: nt %s", (AuthData.first_auth) ? "" : "(enc)");
208 MifareAuthState = masNrAr;
209 if (AuthData.first_auth)
210 AuthData.nt = bytes_to_num(cmd, 4);
211 else
212 AuthData.nt_enc = bytes_to_num(cmd, 4);
213 AuthData.nt_enc_par = parity[0];
214 return;
215 } else {
216 MifareAuthState = masError;
217 }
218 break;
219 case masNrAr:
220 if (cmdsize == 8 && !isResponse) {
221 snprintf(exp,size,"AUTH: nr ar (enc)");
222 MifareAuthState = masAt;
223 AuthData.nr_enc = bytes_to_num(cmd, 4);
224 AuthData.ar_enc = bytes_to_num(&cmd[4], 4);
225 AuthData.ar_enc_par = parity[0] << 4;
226 return;
227 } else {
228 MifareAuthState = masError;
229 }
230 break;
231 case masAt:
232 if (cmdsize == 4 && isResponse) {
233 snprintf(exp,size,"AUTH: at (enc)");
234 MifareAuthState = masFirstData;
235 AuthData.at_enc = bytes_to_num(cmd, 4);
236 AuthData.at_enc_par = parity[0];
237 return;
238 } else {
239 MifareAuthState = masError;
240 }
241 break;
242 default:
243 break;
244 }
245
246 if (!isResponse)
247 annotateIso14443a(exp, size, cmd, cmdsize);
248
249 }
250
251 bool DecodeMifareData(uint8_t *cmd, uint8_t cmdsize, bool isResponse, uint8_t *mfData, size_t *mfDataLen) {
252 *mfDataLen = 0;
253
254 if (cmdsize > 32)
255 return false;
256
257 if (MifareAuthState == masFirstData) {
258 if (AuthData.first_auth) {
259 uint32_t ks2 = AuthData.ar_enc ^ prng_successor(AuthData.nt, 64);
260 uint32_t ks3 = AuthData.at_enc ^ prng_successor(AuthData.nt, 96);
261 struct Crypto1State *revstate = lfsr_recovery64(ks2, ks3);
262 lfsr_rollback_word(revstate, 0, 0);
263 lfsr_rollback_word(revstate, 0, 0);
264 lfsr_rollback_word(revstate, AuthData.nr_enc, 1);
265 lfsr_rollback_word(revstate, AuthData.uid ^ AuthData.nt, 0);
266
267 uint64_t lfsr = 0;
268 crypto1_get_lfsr(revstate, &lfsr);
269 crypto1_destroy(revstate);
270 // LastKey = lfsr;
271 PrintAndLog(" | * | key | probable key:%x%x Prng:%s ks2:%08x ks3:%08x | |",
272 (unsigned int)((lfsr & 0xFFFFFFFF00000000) >> 32), (unsigned int)(lfsr & 0xFFFFFFFF),
273 validate_prng_nonce(AuthData.nt) ? "WEAK": "HARD",
274 ks2,
275 ks3);
276
277 AuthData.first_auth = false;
278 } else {
279 printf("uid:%x nt:%x ar_enc:%x at_enc:%x\n", AuthData.uid, AuthData.nt, AuthData.ar_enc, AuthData.at_enc);
280 }
281
282
283
284 MifareAuthState = masData;
285 return true;
286 }
287
288 if (MifareAuthState == masData) {
289 }
290
291 return *mfDataLen > 0;
292 }
293
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