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cvs.zerfleddert.de Git - proxmark3-svn/blob - client/cmdlfpyramid.c
823677203a3ba9c7eeb7d89aad8d5ccb15fbcaed
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 //-----------------------------------------------------------------------------
11 #include "cmdlfpyramid.h"
20 #include "cmdparser.h"
21 #include "cmddata.h" // setDemodBuf +
24 #include "protocols.h" // for T55xx config register definitions
25 #include "lfdemod.h" // parityTest
28 static int CmdHelp(const char *Cmd
);
30 int usage_lf_pyramid_clone(void){
31 PrintAndLog("clone a Farpointe/Pyramid tag to a T55x7 tag.");
32 PrintAndLog("The facility-code is 8-bit and the card number is 16-bit. Larger values are truncated. ");
33 PrintAndLog("Currently only works on 26bit");
35 PrintAndLog("Usage: lf pyramid clone <Facility-Code> <Card-Number>");
36 PrintAndLog("Options :");
37 PrintAndLog(" <Facility-Code> : 8-bit value facility code");
38 PrintAndLog(" <Card Number> : 16-bit value card number");
39 PrintAndLog(" Q5 : optional - clone to Q5 (T5555) instead of T55x7 chip");
41 PrintAndLog("Sample : lf pyramid clone 123 11223");
45 int usage_lf_pyramid_sim(void) {
46 PrintAndLog("Enables simulation of Farpointe/Pyramid card with specified card number.");
47 PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
48 PrintAndLog("The facility-code is 8-bit and the card number is 16-bit. Larger values are truncated.");
49 PrintAndLog("Currently work only on 26bit");
51 PrintAndLog("Usage: lf pyramid sim <Card-Number>");
52 PrintAndLog("Options :");
53 PrintAndLog(" <Facility-Code> : 8-bit value facility code");
54 PrintAndLog(" <Card Number> : 16-bit value card number");
56 PrintAndLog("Sample : lf pyramid sim 123 11223");
61 int GetPyramidBits(uint32_t fc
, uint32_t cn
, uint8_t *pyramidBits
) {
64 memset(pre
, 0x00, sizeof(pre
));
69 // Get 26 wiegand from FacilityCode, CardNumber
71 memset(wiegand
, 0x00, sizeof(wiegand
));
72 num_to_bytebits(fc
, 8, wiegand
);
73 num_to_bytebits(cn
, 16, wiegand
+8);
75 // add wiegand parity bits (dest, source, len)
76 wiegand_add_parity(pre
+80, wiegand
, 24);
78 // add paritybits (bitsource, dest, sourcelen, paritylen, parityType (odd, even,)
79 addParity(pre
+8, pyramidBits
+8, 102, 8, 1);
83 for (uint8_t i
= 0; i
< 13; i
++)
84 csBuff
[i
] = bytebits_to_byte(pyramidBits
+ 16 + (i
*8), 8);
86 uint32_t crc
= CRC8Maxim(csBuff
, 13);
87 num_to_bytebits(crc
, 8, pyramidBits
+120);
92 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
93 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
94 int CmdFSKdemodPyramid(const char *Cmd
)
96 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
97 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
98 size_t size
= getFromGraphBuf(BitStream
);
99 if (size
==0) return 0;
102 //get binary from fsk wave
103 int idx
= PyramiddemodFSK(BitStream
, &size
, &waveIdx
);
107 PrintAndLog("DEBUG: Error - not enough samples");
109 PrintAndLog("DEBUG: Error - only noise found");
111 PrintAndLog("DEBUG: Error - problem during FSK demod");
113 PrintAndLog("DEBUG: Error - Size not correct: %d", size
);
115 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
117 PrintAndLog("DEBUG: Error - idx: %d",idx
);
122 // 0 10 20 30 40 50 60
124 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
125 // -----------------------------------------------------------------------------
126 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
127 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
129 // 64 70 80 90 100 110 120
131 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
132 // -----------------------------------------------------------------------------
133 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
134 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
135 // |---115---||---------71---------|
136 // s = format start bit, o = odd parity of last 7 bits
137 // f = facility code, c = card number
138 // w = wiegand parity, x = extra space for other formats
139 // p = unknown checksum
140 // (26 bit format shown)
142 //get bytes for checksum calc
143 uint8_t checksum
= bytebits_to_byte(BitStream
+ idx
+ 120, 8);
144 uint8_t csBuff
[14] = {0x00};
145 for (uint8_t i
= 0; i
< 13; i
++){
146 csBuff
[i
] = bytebits_to_byte(BitStream
+ idx
+ 16 + (i
*8), 8);
148 //check checksum calc
149 //checksum calc thanks to ICEMAN!!
150 uint32_t checkCS
= CRC8Maxim(csBuff
,13);
152 //get raw ID before removing parities
153 uint32_t rawLo
= bytebits_to_byte(BitStream
+idx
+96,32);
154 uint32_t rawHi
= bytebits_to_byte(BitStream
+idx
+64,32);
155 uint32_t rawHi2
= bytebits_to_byte(BitStream
+idx
+32,32);
156 uint32_t rawHi3
= bytebits_to_byte(BitStream
+idx
,32);
157 setDemodBuf(BitStream
,128,idx
);
158 setClockGrid(50, waveIdx
+ (idx
*50));
160 size
= removeParity(BitStream
, idx
+8, 8, 1, 120);
163 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size
, idx
, rawHi3
);
167 // ok valid card found!
170 // 0 10 20 30 40 50 60 70
172 // 01234567890123456789012345678901234567890123456789012345678901234567890
173 // -----------------------------------------------------------------------
174 // 00000000000000000000000000000000000000000000000000000000000000000000000
175 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
179 // 1 2 34567890 1234567890123456 7 8901234
180 // ---------------------------------------
181 // 1 1 01110011 0000000001000110 0 1001010
182 // s w ffffffff cccccccccccccccc w ppppppp
183 // |--115-| |------71------|
184 // s = format start bit, o = odd parity of last 7 bits
185 // f = facility code, c = card number
186 // w = wiegand parity, x = extra space for other formats
187 // p = unknown checksum
188 // (26 bit format shown)
190 //find start bit to get fmtLen
192 for (j
=0; j
<size
; j
++){
193 if(BitStream
[j
]) break;
195 uint8_t fmtLen
= size
-j
-8;
197 uint32_t cardnum
= 0;
200 fc
= bytebits_to_byte(BitStream
+73, 8);
201 cardnum
= bytebits_to_byte(BitStream
+81, 16);
202 code1
= bytebits_to_byte(BitStream
+72,fmtLen
);
203 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
);
204 } else if (fmtLen
==45){
205 fmtLen
=42; //end = 10 bits not 7 like 26 bit fmt
206 fc
= bytebits_to_byte(BitStream
+53, 10);
207 cardnum
= bytebits_to_byte(BitStream
+63, 32);
208 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen
, fc
, cardnum
, rawHi3
, rawHi2
, rawHi
, rawLo
);
210 cardnum
= bytebits_to_byte(BitStream
+81, 16);
212 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
213 //code2 = bytebits_to_byte(BitStream+(size-32),32);
214 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen
, cardnum
, rawHi3
, rawHi2
, rawHi
, rawLo
);
216 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
217 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen
, cardnum
, rawHi3
, rawHi2
, rawHi
, rawLo
);
220 if (checksum
== checkCS
)
221 PrintAndLog("Checksum %02x passed", checksum
);
223 PrintAndLog("Checksum %02x failed - should have been %02x", checksum
, checkCS
);
226 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx
, 128);
232 int CmdPyramidRead(const char *Cmd
) {
233 lf_read(true, 15000);
234 return CmdFSKdemodPyramid("");
237 int CmdPyramidClone(const char *Cmd
) {
239 char cmdp
= param_getchar(Cmd
, 0);
240 if (strlen(Cmd
) == 0 || cmdp
== 'h' || cmdp
== 'H') return usage_lf_pyramid_clone();
242 uint32_t facilitycode
=0, cardnumber
=0, fc
= 0, cn
= 0;
246 memset(bs
, 0x00, sizeof(bs
));
248 if (sscanf(Cmd
, "%u %u", &fc
, &cn
) != 2) return usage_lf_pyramid_clone();
250 facilitycode
= (fc
& 0x000000FF);
251 cardnumber
= (cn
& 0x0000FFFF);
253 if ( !GetPyramidBits(facilitycode
, cardnumber
, bs
)) {
254 PrintAndLog("Error with tag bitstream generation.");
258 //Pyramid - compat mode, FSK2a, data rate 50, 4 data blocks
259 blocks
[0] = T55x7_MODULATION_FSK2a
| T55x7_BITRATE_RF_50
| 4<<T55x7_MAXBLOCK_SHIFT
;
261 if (param_getchar(Cmd
, 3) == 'Q' || param_getchar(Cmd
, 3) == 'q')
262 blocks
[0] = T5555_MODULATION_FSK2
| T5555_INVERT_OUTPUT
| 50<<T5555_BITRATE_SHIFT
| 4<<T5555_MAXBLOCK_SHIFT
;
264 blocks
[1] = bytebits_to_byte(bs
,32);
265 blocks
[2] = bytebits_to_byte(bs
+32,32);
266 blocks
[3] = bytebits_to_byte(bs
+64,32);
267 blocks
[4] = bytebits_to_byte(bs
+96,32);
269 PrintAndLog("Preparing to clone Farpointe/Pyramid to T55x7 with Facility Code: %u, Card Number: %u", facilitycode
, cardnumber
);
270 PrintAndLog("Blk | Data ");
271 PrintAndLog("----+------------");
272 for ( i
= 0; i
<5; ++i
)
273 PrintAndLog(" %02d | %08" PRIx32
, i
, blocks
[i
]);
276 UsbCommand c
= {CMD_T55XX_WRITE_BLOCK
, {0,0,0}};
278 for ( i
= 0; i
<5; ++i
) {
279 c
.arg
[0] = blocks
[i
];
281 clearCommandBuffer();
283 if (!WaitForResponseTimeout(CMD_ACK
, &resp
, 1000)){
284 PrintAndLog("Error occurred, device did not respond during write operation.");
291 int CmdPyramidSim(const char *Cmd
) {
293 char cmdp
= param_getchar(Cmd
, 0);
294 if (strlen(Cmd
) == 0 || cmdp
== 'h' || cmdp
== 'H') return usage_lf_pyramid_sim();
296 uint32_t facilitycode
= 0, cardnumber
= 0, fc
= 0, cn
= 0;
299 size_t size
= sizeof(bs
);
300 memset(bs
, 0x00, size
);
302 // Pyramid uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
304 arg1
= (10 << 8) + 8;
307 if (sscanf(Cmd
, "%u %u", &fc
, &cn
) != 2) return usage_lf_pyramid_sim();
309 facilitycode
= (fc
& 0x000000FF);
310 cardnumber
= (cn
& 0x0000FFFF);
312 if ( !GetPyramidBits(facilitycode
, cardnumber
, bs
)) {
313 PrintAndLog("Error with tag bitstream generation.");
317 PrintAndLog("Simulating Farpointe/Pyramid - Facility Code: %u, CardNumber: %u", facilitycode
, cardnumber
);
319 UsbCommand c
= {CMD_FSK_SIM_TAG
, {arg1
, arg2
, size
}};
320 memcpy(c
.d
.asBytes
, bs
, size
);
321 clearCommandBuffer();
326 static command_t CommandTable
[] = {
327 {"help", CmdHelp
, 1, "This help"},
328 {"demod", CmdFSKdemodPyramid
, 1, "Demodulate a Pyramid FSK tag from the GraphBuffer"},
329 {"read", CmdPyramidRead
, 0, "Attempt to read and extract tag data"},
330 {"clone", CmdPyramidClone
, 0, "<Facility-Code> <Card Number> clone pyramid tag"},
331 {"sim", CmdPyramidSim
, 0, "<Facility-Code> <Card Number> simulate pyramid tag"},
332 {NULL
, NULL
, 0, NULL
}
335 int CmdLFPyramid(const char *Cmd
) {
336 clearCommandBuffer();
337 CmdsParse(CommandTable
, Cmd
);
341 int CmdHelp(const char *Cmd
) {
342 CmdsHelp(CommandTable
);