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git.zerfleddert.de Git - proxmark3-svn/blob - client/cmdlfpyramid.c
1 //-----------------------------------------------------------------------------
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
6 //-----------------------------------------------------------------------------
7 // Low frequency Farpoint / Pyramid tag commands
8 // FSK2a, rf/50, 128 bits (complete)
9 //-----------------------------------------------------------------------------
13 #include "cmdlfpyramid.h"
14 #include "proxmark3.h"
18 #include "cmdparser.h"
19 #include "cmddata.h" // setDemodBuf +
22 #include "protocols.h" // for T55xx config register definitions
23 #include "lfdemod.h" // parityTest
26 static int CmdHelp(const char *Cmd
);
28 int usage_lf_pyramid_clone(void){
29 PrintAndLog("clone a Farpointe/Pyramid tag to a T55x7 tag.");
30 PrintAndLog("The facility-code is 8-bit and the card number is 16-bit. Larger values are truncated. ");
31 PrintAndLog("Currently only works on 26bit");
33 PrintAndLog("Usage: lf pyramid clone <Facility-Code> <Card-Number>");
34 PrintAndLog("Options :");
35 PrintAndLog(" <Facility-Code> : 8-bit value facility code");
36 PrintAndLog(" <Card Number> : 16-bit value card number");
37 PrintAndLog(" Q5 : optional - clone to Q5 (T5555) instead of T55x7 chip");
39 PrintAndLog("Sample : lf pyramid clone 123 11223");
43 int usage_lf_pyramid_sim(void) {
44 PrintAndLog("Enables simulation of Farpointe/Pyramid card with specified card number.");
45 PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
46 PrintAndLog("The facility-code is 8-bit and the card number is 16-bit. Larger values are truncated.");
47 PrintAndLog("Currently work only on 26bit");
49 PrintAndLog("Usage: lf pyramid sim <Card-Number>");
50 PrintAndLog("Options :");
51 PrintAndLog(" <Facility-Code> : 8-bit value facility code");
52 PrintAndLog(" <Card Number> : 16-bit value card number");
54 PrintAndLog("Sample : lf pyramid sim 123 11223");
59 int GetPyramidBits(uint32_t fc
, uint32_t cn
, uint8_t *pyramidBits
) {
62 memset(pre
, 0x00, sizeof(pre
));
67 // Get 26 wiegand from FacilityCode, CardNumber
69 memset(wiegand
, 0x00, sizeof(wiegand
));
70 num_to_bytebits(fc
, 8, wiegand
);
71 num_to_bytebits(cn
, 16, wiegand
+8);
73 // add wiegand parity bits (dest, source, len)
74 wiegand_add_parity(pre
+80, wiegand
, 24);
76 // add paritybits (bitsource, dest, sourcelen, paritylen, parityType (odd, even,)
77 addParity(pre
+8, pyramidBits
+8, 102, 8, 1);
81 for (uint8_t i
= 0; i
< 13; i
++)
82 csBuff
[i
] = bytebits_to_byte(pyramidBits
+ 16 + (i
*8), 8);
84 uint32_t crc
= CRC8Maxim(csBuff
, 13);
85 num_to_bytebits(crc
, 8, pyramidBits
+120);
90 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
91 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
92 int CmdFSKdemodPyramid(const char *Cmd
)
94 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
95 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
96 size_t size
= getFromGraphBuf(BitStream
);
97 if (size
==0) return 0;
100 //get binary from fsk wave
101 int idx
= PyramiddemodFSK(BitStream
, &size
, &waveIdx
);
105 PrintAndLog("DEBUG: Error - not enough samples");
107 PrintAndLog("DEBUG: Error - only noise found");
109 PrintAndLog("DEBUG: Error - problem during FSK demod");
111 PrintAndLog("DEBUG: Error - Size not correct: %d", size
);
113 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
115 PrintAndLog("DEBUG: Error - idx: %d",idx
);
120 // 0 10 20 30 40 50 60
122 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
123 // -----------------------------------------------------------------------------
124 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
125 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
127 // 64 70 80 90 100 110 120
129 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
130 // -----------------------------------------------------------------------------
131 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
132 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
133 // |---115---||---------71---------|
134 // s = format start bit, o = odd parity of last 7 bits
135 // f = facility code, c = card number
136 // w = wiegand parity, x = extra space for other formats
137 // p = unknown checksum
138 // (26 bit format shown)
140 //get bytes for checksum calc
141 uint8_t checksum
= bytebits_to_byte(BitStream
+ idx
+ 120, 8);
142 uint8_t csBuff
[14] = {0x00};
143 for (uint8_t i
= 0; i
< 13; i
++){
144 csBuff
[i
] = bytebits_to_byte(BitStream
+ idx
+ 16 + (i
*8), 8);
146 //check checksum calc
147 //checksum calc thanks to ICEMAN!!
148 uint32_t checkCS
= CRC8Maxim(csBuff
,13);
150 //get raw ID before removing parities
151 uint32_t rawLo
= bytebits_to_byte(BitStream
+idx
+96,32);
152 uint32_t rawHi
= bytebits_to_byte(BitStream
+idx
+64,32);
153 uint32_t rawHi2
= bytebits_to_byte(BitStream
+idx
+32,32);
154 uint32_t rawHi3
= bytebits_to_byte(BitStream
+idx
,32);
155 setDemodBuf(BitStream
,128,idx
);
156 setClockGrid(50, waveIdx
+ (idx
*50));
158 size
= removeParity(BitStream
, idx
+8, 8, 1, 120);
161 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size
, idx
, rawHi3
);
165 // ok valid card found!
168 // 0 10 20 30 40 50 60 70
170 // 01234567890123456789012345678901234567890123456789012345678901234567890
171 // -----------------------------------------------------------------------
172 // 00000000000000000000000000000000000000000000000000000000000000000000000
173 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
177 // 1 2 34567890 1234567890123456 7 8901234
178 // ---------------------------------------
179 // 1 1 01110011 0000000001000110 0 1001010
180 // s w ffffffff cccccccccccccccc w ppppppp
181 // |--115-| |------71------|
182 // s = format start bit, o = odd parity of last 7 bits
183 // f = facility code, c = card number
184 // w = wiegand parity, x = extra space for other formats
185 // p = unknown checksum
186 // (26 bit format shown)
188 //find start bit to get fmtLen
190 for (j
=0; j
<size
; j
++){
191 if(BitStream
[j
]) break;
193 uint8_t fmtLen
= size
-j
-8;
195 uint32_t cardnum
= 0;
198 fc
= bytebits_to_byte(BitStream
+73, 8);
199 cardnum
= bytebits_to_byte(BitStream
+81, 16);
200 code1
= bytebits_to_byte(BitStream
+72,fmtLen
);
201 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x%08x", fmtLen
, fc
, cardnum
, code1
, rawHi3
, rawHi2
, rawHi
, rawLo
);
202 } else if (fmtLen
==45){
203 fmtLen
=42; //end = 10 bits not 7 like 26 bit fmt
204 fc
= bytebits_to_byte(BitStream
+53, 10);
205 cardnum
= bytebits_to_byte(BitStream
+63, 32);
206 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen
, fc
, cardnum
, rawHi3
, rawHi2
, rawHi
, rawLo
);
208 cardnum
= bytebits_to_byte(BitStream
+81, 16);
210 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
211 //code2 = bytebits_to_byte(BitStream+(size-32),32);
212 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen
, cardnum
, rawHi3
, rawHi2
, rawHi
, rawLo
);
214 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
215 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen
, cardnum
, rawHi3
, rawHi2
, rawHi
, rawLo
);
218 if (checksum
== checkCS
)
219 PrintAndLog("Checksum %02x passed", checksum
);
221 PrintAndLog("Checksum %02x failed - should have been %02x", checksum
, checkCS
);
224 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx
, 128);
230 int CmdPyramidRead(const char *Cmd
) {
231 lf_read(true, 15000);
232 return CmdFSKdemodPyramid("");
235 int CmdPyramidClone(const char *Cmd
) {
237 char cmdp
= param_getchar(Cmd
, 0);
238 if (strlen(Cmd
) == 0 || cmdp
== 'h' || cmdp
== 'H') return usage_lf_pyramid_clone();
240 uint32_t facilitycode
=0, cardnumber
=0, fc
= 0, cn
= 0;
244 memset(bs
, 0x00, sizeof(bs
));
246 if (sscanf(Cmd
, "%u %u", &fc
, &cn
) != 2) return usage_lf_pyramid_clone();
248 facilitycode
= (fc
& 0x000000FF);
249 cardnumber
= (cn
& 0x0000FFFF);
251 if ( !GetPyramidBits(facilitycode
, cardnumber
, bs
)) {
252 PrintAndLog("Error with tag bitstream generation.");
256 //Pyramid - compat mode, FSK2a, data rate 50, 4 data blocks
257 blocks
[0] = T55x7_MODULATION_FSK2a
| T55x7_BITRATE_RF_50
| 4<<T55x7_MAXBLOCK_SHIFT
;
259 if (param_getchar(Cmd
, 3) == 'Q' || param_getchar(Cmd
, 3) == 'q')
260 blocks
[0] = T5555_MODULATION_FSK2
| T5555_INVERT_OUTPUT
| 50<<T5555_BITRATE_SHIFT
| 4<<T5555_MAXBLOCK_SHIFT
;
262 blocks
[1] = bytebits_to_byte(bs
,32);
263 blocks
[2] = bytebits_to_byte(bs
+32,32);
264 blocks
[3] = bytebits_to_byte(bs
+64,32);
265 blocks
[4] = bytebits_to_byte(bs
+96,32);
267 PrintAndLog("Preparing to clone Farpointe/Pyramid to T55x7 with Facility Code: %u, Card Number: %u", facilitycode
, cardnumber
);
268 PrintAndLog("Blk | Data ");
269 PrintAndLog("----+------------");
270 for ( i
= 0; i
<5; ++i
)
271 PrintAndLog(" %02d | %08" PRIx32
, i
, blocks
[i
]);
274 UsbCommand c
= {CMD_T55XX_WRITE_BLOCK
, {0,0,0}};
276 for ( i
= 0; i
<5; ++i
) {
277 c
.arg
[0] = blocks
[i
];
279 clearCommandBuffer();
281 if (!WaitForResponseTimeout(CMD_ACK
, &resp
, 1000)){
282 PrintAndLog("Error occurred, device did not respond during write operation.");
289 int CmdPyramidSim(const char *Cmd
) {
291 char cmdp
= param_getchar(Cmd
, 0);
292 if (strlen(Cmd
) == 0 || cmdp
== 'h' || cmdp
== 'H') return usage_lf_pyramid_sim();
294 uint32_t facilitycode
= 0, cardnumber
= 0, fc
= 0, cn
= 0;
297 size_t size
= sizeof(bs
);
298 memset(bs
, 0x00, size
);
300 // Pyramid uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
302 arg1
= (10 << 8) + 8;
305 if (sscanf(Cmd
, "%u %u", &fc
, &cn
) != 2) return usage_lf_pyramid_sim();
307 facilitycode
= (fc
& 0x000000FF);
308 cardnumber
= (cn
& 0x0000FFFF);
310 if ( !GetPyramidBits(facilitycode
, cardnumber
, bs
)) {
311 PrintAndLog("Error with tag bitstream generation.");
315 PrintAndLog("Simulating Farpointe/Pyramid - Facility Code: %u, CardNumber: %u", facilitycode
, cardnumber
);
317 UsbCommand c
= {CMD_FSK_SIM_TAG
, {arg1
, arg2
, size
}};
318 memcpy(c
.d
.asBytes
, bs
, size
);
319 clearCommandBuffer();
324 static command_t CommandTable
[] = {
325 {"help", CmdHelp
, 1, "This help"},
326 {"demod", CmdFSKdemodPyramid
, 1, "Demodulate a Pyramid FSK tag from the GraphBuffer"},
327 {"read", CmdPyramidRead
, 0, "Attempt to read and extract tag data"},
328 {"clone", CmdPyramidClone
, 0, "<Facility-Code> <Card Number> clone pyramid tag"},
329 {"sim", CmdPyramidSim
, 0, "<Facility-Code> <Card Number> simulate pyramid tag"},
330 {NULL
, NULL
, 0, NULL
}
333 int CmdLFPyramid(const char *Cmd
) {
334 clearCommandBuffer();
335 CmdsParse(CommandTable
, Cmd
);
339 int CmdHelp(const char *Cmd
) {
340 CmdsHelp(CommandTable
);