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[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 // ASK/Manchester, STT, RF/32, 96 bits long
9 //-----------------------------------------------------------------------------
10 #include "cmdlfnoralsy.h"
11 #include <string.h>
12 #include <inttypes.h>
13 #include <math.h>
14 #include "proxmark3.h"
15 #include "ui.h"
16 #include "util.h"
17 #include "graph.h"
18 #include "cmdparser.h"
19 #include "cmddata.h"
20 #include "cmdmain.h"
21 #include "cmdlf.h"
22 #include "protocols.h" // for T55xx config register definitions
23 #include "lfdemod.h" // parityTest
24
25 static int CmdHelp(const char *Cmd);
26
27 int usage_lf_noralsy_clone(void){
28 PrintAndLog("clone a Noralsy tag to a T55x7 tag.");
29 PrintAndLog("Usage: lf noralsy clone [h] <card id> <year> <Q5>");
30 PrintAndLog("Options:");
31 PrintAndLog(" h : This help");
32 PrintAndLog(" <card id> : Noralsy card ID");
33 PrintAndLog(" <year> : Tag allocation year");
34 PrintAndLog(" <Q5> : specify write to Q5 (t5555 instead of t55x7)");
35 PrintAndLog("");
36 PrintAndLog("Sample: lf noralsy clone 112233");
37 return 0;
38 }
39
40 int usage_lf_noralsy_sim(void) {
41 PrintAndLog("Enables simulation of Noralsy card with specified card number.");
42 PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
43 PrintAndLog("");
44 PrintAndLog("Usage: lf noralsy sim [h] <card id> <year>");
45 PrintAndLog("Options:");
46 PrintAndLog(" h : This help");
47 PrintAndLog(" <card id> : Noralsy card ID");
48 PrintAndLog(" <year> : Tag allocation year");
49 PrintAndLog("");
50 PrintAndLog("Sample: lf noralsy sim 112233");
51 return 0;
52 }
53
54 static uint8_t noralsy_chksum( uint8_t* bits, uint8_t len) {
55 uint8_t sum = 0;
56 for (uint8_t i = 0; i < len; i += 4)
57 sum ^= bytebits_to_byte(bits+i, 4);
58 return sum & 0x0F ;
59 }
60 int getnoralsyBits(uint32_t id, uint16_t year, uint8_t *bits) {
61 //preamp
62 num_to_bytebits(0xBB0214FF, 32, bits); // --> Have seen 0xBB0214FF / 0xBB0314FF UNKNOWN
63
64 year &= 0xFF;
65
66 uint16_t sub1 = (id & 0xFFF0000) >> 16;
67 uint8_t sub2 = (id & 0x000FF00) >> 8;
68 uint8_t sub3 = (id & 0x00000FF);
69
70 num_to_bytebits(sub1, 12, bits+32);
71 num_to_bytebits(year, 8, bits+44);
72 num_to_bytebits(0, 4, bits+52); // --> UNKNOWN. Flag?
73
74 num_to_bytebits(sub2, 8, bits+56);
75 num_to_bytebits(sub3, 8, bits+64);
76
77 //chksum byte
78 uint8_t chksum = noralsy_chksum(bits+32, 40);
79 num_to_bytebits(chksum, 4, bits+72);
80 chksum = noralsy_chksum(bits, 76);
81 num_to_bytebits(chksum, 4, bits+76);
82 return 1;
83 }
84
85 // by iceman
86 // find Noralsy preamble in already demoded data
87 int NoralsyDemod_AM(uint8_t *dest, size_t *size) {
88 if (*size < 96) return -1; //make sure buffer has data
89 size_t startIdx = 0;
90 uint8_t preamble[] = {1,0,1,1,1,0,1,1,0,0,0,0};
91 if (!preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx))
92 return -2; //preamble not found
93 if (*size != 96) return -3; //wrong demoded size
94 //return start position
95 return (int)startIdx;
96 }
97
98 /*
99 *
100 * 2520116 | BB0214FF2529900116360000 | 10111011 00000011 00010100 11111111 00100101 00101001 10010000 00000001 00010110 00110110 00000000 00000000
101 * aaaaaaaaiii***iiiicc---- iiiiiiii iiiiYYYY YYYY**** iiiiiiii iiiiiiii cccccccc
102 *
103 * a = fixed value BB0314FF
104 * i = printed id, BCD-format
105 * Y = year
106 * c = checksum
107 *
108 **/
109
110 //see ASKDemod for what args are accepted
111 int CmdNoralsyDemod(const char *Cmd) {
112
113 //ASK / Manchester
114 bool st = false;
115 if (!ASKDemod_ext("32 0 0", false, false, 1, &st)) {
116 if (g_debugMode) PrintAndLog("DEBUG: Error - Noralsy: ASK/Manchester Demod failed");
117 return 0;
118 }
119 if (!st) return 0;
120
121 size_t size = DemodBufferLen;
122 int ans = NoralsyDemod_AM(DemodBuffer, &size);
123 if (ans < 0){
124 if (g_debugMode){
125 if (ans == -1)
126 PrintAndLog("DEBUG: Error - Noralsy: too few bits found");
127 else if (ans == -2)
128 PrintAndLog("DEBUG: Error - Noralsy: preamble not found");
129 else if (ans == -3)
130 PrintAndLog("DEBUG: Error - Noralsy: Size not correct: %d", size);
131 else
132 PrintAndLog("DEBUG: Error - Noralsy: ans: %d", ans);
133 }
134 return 0;
135 }
136 setDemodBuf(DemodBuffer, 96, ans);
137 //setGrid_Clock(32);
138
139 //got a good demod
140 uint32_t raw1 = bytebits_to_byte(DemodBuffer, 32);
141 uint32_t raw2 = bytebits_to_byte(DemodBuffer+32, 32);
142 uint32_t raw3 = bytebits_to_byte(DemodBuffer+64, 32);
143
144 uint32_t cardid = (bytebits_to_byte(DemodBuffer+32, 12)<<16) | bytebits_to_byte(DemodBuffer+32+24, 16);
145
146 uint16_t year = (raw2 & 0x000ff000) >> 12;
147 year += ( year > 0x60 ) ? 0x1900: 0x2000;
148
149 // calc checksums
150 uint8_t calc1 = noralsy_chksum(DemodBuffer+32, 40);
151 uint8_t calc2 = noralsy_chksum(DemodBuffer, 76);
152 uint8_t chk1 = 0, chk2 = 0;
153 chk1 = bytebits_to_byte(DemodBuffer+72, 4);
154 chk2 = bytebits_to_byte(DemodBuffer+76, 4);
155 // test checksums
156 if ( chk1 != calc1 ) {
157 if (g_debugMode) PrintAndLog("DEBUG: Error - Noralsy: checksum 1 failed %x - %x\n", chk1, calc1);
158 return 0;
159 }
160 if ( chk2 != calc2 ) {
161 if (g_debugMode) PrintAndLog("DEBUG: Error - Noralsy: checksum 2 failed %x - %x\n", chk2, calc2);
162 return 0;
163 }
164
165 PrintAndLog("Noralsy Tag Found: Card ID %X, Year: %X Raw: %08X%08X%08X", cardid, year, raw1 ,raw2, raw3);
166 if (raw1 != 0xBB0214FF) {
167 PrintAndLog("Unknown bits set in first block! Expected 0xBB0214FF, Found: 0x%08X", raw1);
168 PrintAndLog("Please post this output in forum to further research on this format");
169 }
170 return 1;
171 }
172
173 int CmdNoralsyRead(const char *Cmd) {
174 CmdLFRead("s");
175 getSamples("8000",true);
176 return CmdNoralsyDemod(Cmd);
177 }
178
179 int CmdNoralsyClone(const char *Cmd) {
180
181 uint16_t year = 0;
182 uint32_t id = 0;
183 uint32_t blocks[4] = {T55x7_MODULATION_MANCHESTER | T55x7_BITRATE_RF_32 | T55x7_ST_TERMINATOR | 3 << T55x7_MAXBLOCK_SHIFT, 0, 0};
184 uint8_t bits[96];
185 uint8_t *bs = bits;
186 memset(bs, 0, sizeof(bits));
187
188 char cmdp = param_getchar(Cmd, 0);
189 if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_noralsy_clone();
190
191 id = param_get32ex(Cmd, 0, 0, 16);
192 year = param_get32ex(Cmd, 1, 2000, 16);
193
194 //Q5
195 if (param_getchar(Cmd, 2) == 'Q' || param_getchar(Cmd, 2) == 'q') {
196 //t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
197 blocks[0] = T5555_MODULATION_MANCHESTER | ((32-2)>>1) << T5555_BITRATE_SHIFT | T5555_ST_TERMINATOR | 3 << T5555_MAXBLOCK_SHIFT;
198 }
199
200 if ( !getnoralsyBits(id, year, bs)) {
201 PrintAndLog("Error with tag bitstream generation.");
202 return 1;
203 }
204
205 //
206 blocks[1] = bytebits_to_byte(bs,32);
207 blocks[2] = bytebits_to_byte(bs+32,32);
208 blocks[3] = bytebits_to_byte(bs+64,32);
209
210 PrintAndLog("Preparing to clone Noralsy to T55x7 with CardId: %x", id);
211 PrintAndLog("Blk | Data ");
212 PrintAndLog("----+------------");
213 PrintAndLog(" 00 | 0x%08x", blocks[0]);
214 PrintAndLog(" 01 | 0x%08x", blocks[1]);
215 PrintAndLog(" 02 | 0x%08x", blocks[2]);
216 PrintAndLog(" 03 | 0x%08x", blocks[3]);
217
218 UsbCommand resp;
219 UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
220
221 for (int i = 3; i >= 0; --i) {
222 c.arg[0] = blocks[i];
223 c.arg[1] = i;
224 clearCommandBuffer();
225 SendCommand(&c);
226 if (!WaitForResponseTimeout(CMD_ACK, &resp, T55XX_WRITE_TIMEOUT)){
227 PrintAndLog("Error occurred, device did not respond during write operation.");
228 return -1;
229 }
230 }
231 return 0;
232 }
233
234 int CmdNoralsySim(const char *Cmd) {
235
236 uint8_t bits[96];
237 uint8_t *bs = bits;
238 memset(bs, 0, sizeof(bits));
239
240 uint16_t year = 0;
241 uint32_t id = 0;
242
243 char cmdp = param_getchar(Cmd, 0);
244 if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_noralsy_sim();
245
246 id = param_get32ex(Cmd, 0, 0, 16);
247 year = param_get32ex(Cmd, 1, 2000, 16);
248
249 uint8_t clk = 32, encoding = 1, separator = 1, invert = 0;
250 uint16_t arg1, arg2;
251 size_t size = 96;
252 arg1 = clk << 8 | encoding;
253 arg2 = invert << 8 | separator;
254
255 if ( !getnoralsyBits(id, year, bs)) {
256 PrintAndLog("Error with tag bitstream generation.");
257 return 1;
258 }
259
260 PrintAndLog("Simulating Noralsy - CardId: %x", id);
261
262 UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
263 memcpy(c.d.asBytes, bs, size);
264 clearCommandBuffer();
265 SendCommand(&c);
266 return 0;
267 }
268
269 static command_t CommandTable[] = {
270 {"help", CmdHelp, 1, "This help"},
271 {"demod", CmdNoralsyDemod,1, "Attempt to read and extract tag data from the GraphBuffer"},
272 {"read", CmdNoralsyRead, 0, "Attempt to read and extract tag data from the antenna"},
273 {"clone", CmdNoralsyClone,0, "clone Noralsy tag"},
274 {"sim", CmdNoralsySim, 0, "simulate Noralsy tag"},
275 {NULL, NULL, 0, NULL}
276 };
277
278 int CmdLFNoralsy(const char *Cmd) {
279 clearCommandBuffer();
280 CmdsParse(CommandTable, Cmd);
281 return 0;
282 }
283
284 int CmdHelp(const char *Cmd) {
285 CmdsHelp(CommandTable);
286 return 0;
287 }
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