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CHG: Added PR #220 from PM3 Master. ref: https://github.com/Proxmark/proxmark3...
[proxmark3-svn] / client / cmdlfnoralsy.c
1 //-----------------------------------------------------------------------------
2 //
3 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
4 // at your option, any later version. See the LICENSE.txt file for the text of
5 // the license.
6 //-----------------------------------------------------------------------------
7 // Low frequency Noralsy tag commands
8 //-----------------------------------------------------------------------------
9 #include "cmdlfnoralsy.h"
10
11 static int CmdHelp(const char *Cmd);
12
13 int usage_lf_noralsy_clone(void){
14 PrintAndLog("clone a Noralsy tag to a T55x7 tag.");
15 PrintAndLog("Usage: lf noralsy clone [h] <card id> <year> <Q5>");
16 PrintAndLog("Options:");
17 PrintAndLog(" h : This help");
18 PrintAndLog(" <card id> : Noralsy card ID");
19 PrintAndLog(" <year> : Tag allocation year");
20 PrintAndLog(" <Q5> : specify write to Q5 (t5555 instead of t55x7)");
21 PrintAndLog("");
22 PrintAndLog("Sample: lf noralsy clone 112233");
23 return 0;
24 }
25
26 int usage_lf_noralsy_sim(void) {
27 PrintAndLog("Enables simulation of Noralsy card with specified card number.");
28 PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
29 PrintAndLog("");
30 PrintAndLog("Usage: lf noralsy sim [h] <card id> <year>");
31 PrintAndLog("Options:");
32 PrintAndLog(" h : This help");
33 PrintAndLog(" <card id> : Noralsy card ID");
34 PrintAndLog(" <year> : Tag allocation year");
35 PrintAndLog("");
36 PrintAndLog("Sample: lf noralsy sim 112233");
37 return 0;
38 }
39
40 static uint8_t noralsy_chksum( uint8_t* bits, uint8_t len) {
41 uint8_t sum = 0;
42 for (uint8_t i = 0; i < len; i += 4)
43 sum ^= bytebits_to_byte(bits+i, 4);
44 return sum & 0x0F ;
45 }
46 int getnoralsyBits(uint32_t id, uint16_t year, uint8_t *bits) {
47 //preamp
48 num_to_bytebits(0xBB0214FF, 32, bits); // --> Have seen 0xBB0214FF / 0xBB0314FF UNKNOWN
49
50 //convert ID into BCD-format
51 id = DEC2BCD(id);
52 year = DEC2BCD(year);
53 year &= 0xFF;
54
55 uint16_t sub1 = (id & 0xFFF0000) >> 16;
56 uint8_t sub2 = (id & 0x000FF00) >> 8;
57 uint8_t sub3 = (id & 0x00000FF);
58
59 num_to_bytebits(sub1, 12, bits+32);
60 num_to_bytebits(year, 8, bits+44);
61 num_to_bytebits(0, 4, bits+52); // --> UNKNOWN. Flag?
62
63 num_to_bytebits(sub2, 8, bits+56);
64 num_to_bytebits(sub3, 8, bits+64);
65
66 //chksum byte
67 uint8_t chksum = noralsy_chksum(bits+32, 40);
68 num_to_bytebits(chksum, 4, bits+72);
69 chksum = noralsy_chksum(bits, 76);
70 num_to_bytebits(chksum, 4, bits+76);
71 return 1;
72 }
73
74 /*
75 *
76 * 2520116 | BB0314FF2529900116360000 | 10111011 00000011 00010100 11111111 00100101 00101001 10010000 00000001 00010110 00110110 00000000 00000000
77 * aaaaaaaaiii***iiiicc---- iiiiiiii iiiiYYYY YYYY**** iiiiiiii iiiiiiii cccccccc
78 *
79 * a = fixed value BB0314FF
80 * i = printed id, BCD-format
81 * Y = year
82 * c = checksum
83 *
84 **/
85
86 //see ASKDemod for what args are accepted
87 int CmdNoralsyDemod(const char *Cmd) {
88
89 //ASK / Manchester
90 bool st = true;
91 if (!ASKDemod_ext("32 0 0", FALSE, FALSE, 1, &st)) {
92 if (g_debugMode) PrintAndLog("DEBUG: Error - Noralsy: ASK/Manchester Demod failed");
93 return 0;
94 }
95 size_t size = DemodBufferLen;
96 int ans = NoralsyDemod_AM(DemodBuffer, &size);
97 if (ans < 0){
98 if (g_debugMode){
99 if (ans == -1)
100 PrintAndLog("DEBUG: Error - Noralsy: too few bits found");
101 else if (ans == -2)
102 PrintAndLog("DEBUG: Error - Noralsy: preamble not found");
103 else if (ans == -3)
104 PrintAndLog("DEBUG: Error - Noralsy: Size not correct: %d", size);
105 else
106 PrintAndLog("DEBUG: Error - Noralsy: ans: %d", ans);
107 }
108 return 0;
109 }
110 setDemodBuf(DemodBuffer, 96, ans);
111 setGrid_Clock(32);
112
113 //got a good demod
114 uint32_t raw1 = bytebits_to_byte(DemodBuffer, 32);
115 uint32_t raw2 = bytebits_to_byte(DemodBuffer+32, 32);
116 uint32_t raw3 = bytebits_to_byte(DemodBuffer+64, 32);
117
118 uint32_t cardid = ((raw2 & 0xFFF00000) >> 20) << 16;
119 cardid |= (raw2 & 0xFF) << 8;
120 cardid |= ((raw3 & 0xFF000000) >> 24);
121 cardid = BCD2DEC(cardid);
122
123 uint16_t year = (raw2 & 0x000ff000) >> 12;
124 year = BCD2DEC(year);
125 year += ( year > 60 ) ? 1900: 2000;
126
127 // calc checksums
128 uint8_t calc1 = noralsy_chksum(DemodBuffer+32, 40);
129 uint8_t calc2 = noralsy_chksum(DemodBuffer, 76);
130 uint8_t chk1 = 0, chk2 = 0;
131 chk1 = bytebits_to_byte(DemodBuffer+72, 4);
132 chk2 = bytebits_to_byte(DemodBuffer+76, 4);
133 // test checksums
134 if ( chk1 != calc1 ) {
135 printf("checksum 1 failed %x - %x\n", chk1, calc1);
136 return 0;
137 }
138 if ( chk2 != calc2 ) {
139 printf("checksum 2 failed %x - %x\n", chk2, calc2);
140 return 0;
141 }
142
143 PrintAndLog("Noralsy Tag Found: Card ID %u, Year: %u Raw: %08X%08X%08X", cardid, year, raw1 ,raw2, raw3);
144 return 1;
145 }
146
147 int CmdNoralsyRead(const char *Cmd) {
148 CmdLFRead("s");
149 getSamples("8000",TRUE);
150 return CmdNoralsyDemod(Cmd);
151 }
152
153 int CmdNoralsyClone(const char *Cmd) {
154
155 uint16_t year = 0;
156 uint32_t id = 0;
157 uint32_t blocks[4] = {T55x7_MODULATION_MANCHESTER | T55x7_BITRATE_RF_32 | T55x7_ST_TERMINATOR | 3 << T55x7_MAXBLOCK_SHIFT, 0, 0};
158 uint8_t bits[96];
159 uint8_t *bs = bits;
160 memset(bs, 0, sizeof(bits));
161
162 char cmdp = param_getchar(Cmd, 0);
163 if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_noralsy_clone();
164
165 id = param_get32ex(Cmd, 0, 0, 10);
166 year = param_get32ex(Cmd, 1, 2000, 10);
167
168 //Q5
169 if (param_getchar(Cmd, 2) == 'Q' || param_getchar(Cmd, 2) == 'q') {
170 //t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
171 blocks[0] = T5555_MODULATION_MANCHESTER | ((32-2)>>1) << T5555_BITRATE_SHIFT | T5555_ST_TERMINATOR | 3 << T5555_MAXBLOCK_SHIFT;
172 }
173
174 if ( !getnoralsyBits(id, year, bs)) {
175 PrintAndLog("Error with tag bitstream generation.");
176 return 1;
177 }
178
179 //
180 blocks[1] = bytebits_to_byte(bs,32);
181 blocks[2] = bytebits_to_byte(bs+32,32);
182 blocks[3] = bytebits_to_byte(bs+64,32);
183
184 PrintAndLog("Preparing to clone Noralsy to T55x7 with CardId: %u", id);
185 PrintAndLog("Blk | Data ");
186 PrintAndLog("----+------------");
187 PrintAndLog(" 00 | 0x%08x", blocks[0]);
188 PrintAndLog(" 01 | 0x%08x", blocks[1]);
189 PrintAndLog(" 02 | 0x%08x", blocks[2]);
190 PrintAndLog(" 03 | 0x%08x", blocks[3]);
191
192 UsbCommand resp;
193 UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
194
195 for (int i = 3; i >= 0; --i) {
196 c.arg[0] = blocks[i];
197 c.arg[1] = i;
198 clearCommandBuffer();
199 SendCommand(&c);
200 if (!WaitForResponseTimeout(CMD_ACK, &resp, T55XX_WRITE_TIMEOUT)){
201 PrintAndLog("Error occurred, device did not respond during write operation.");
202 return -1;
203 }
204 }
205 return 0;
206 }
207
208 int CmdNoralsySim(const char *Cmd) {
209
210 uint8_t bits[96];
211 uint8_t *bs = bits;
212 memset(bs, 0, sizeof(bits));
213
214 uint16_t year = 0;
215 uint32_t id = 0;
216
217 char cmdp = param_getchar(Cmd, 0);
218 if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_noralsy_sim();
219
220 id = param_get32ex(Cmd, 0, 0, 10);
221 year = param_get32ex(Cmd, 1, 2000, 10);
222
223 uint8_t clk = 32, encoding = 1, separator = 1, invert = 0;
224 uint16_t arg1, arg2;
225 size_t size = 96;
226 arg1 = clk << 8 | encoding;
227 arg2 = invert << 8 | separator;
228
229 if ( !getnoralsyBits(id, year, bs)) {
230 PrintAndLog("Error with tag bitstream generation.");
231 return 1;
232 }
233
234 PrintAndLog("Simulating Noralsy - CardId: %u", id);
235
236 UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
237 memcpy(c.d.asBytes, bs, size);
238 clearCommandBuffer();
239 SendCommand(&c);
240 return 0;
241 }
242
243 static command_t CommandTable[] = {
244 {"help", CmdHelp, 1, "This help"},
245 {"read", CmdNoralsyRead, 0, "Attempt to read and extract tag data"},
246 {"clone", CmdNoralsyClone,0, "clone Noralsy tag"},
247 {"sim", CmdNoralsySim, 0, "simulate Noralsy tag"},
248 {NULL, NULL, 0, NULL}
249 };
250
251 int CmdLFNoralsy(const char *Cmd) {
252 clearCommandBuffer();
253 CmdsParse(CommandTable, Cmd);
254 return 0;
255 }
256
257 int CmdHelp(const char *Cmd) {
258 CmdsHelp(CommandTable);
259 return 0;
260 }
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