From 818e15b0c815d25fdfb914cd826baf14b48fa19d Mon Sep 17 00:00:00 2001 From: Samuele Date: Sun, 6 Jan 2019 18:33:06 +0100 Subject: [PATCH] PCF7931: improved read code and implemented a simple password bruteforce (#745) * Improved PCF 7931 read code and implemented a simple PCF7931 password bruteforce * Warning on the PCF7931 bruteforce command --- armsrc/appmain.c | 3 + armsrc/pcf7931.c | 521 +++++++++++++++++++++++------------------- armsrc/pcf7931.h | 7 +- client/cmdlfpcf7931.c | 51 +++++ client/cmdlfpcf7931.h | 3 + include/usb_cmd.h | 1 + 6 files changed, 349 insertions(+), 237 deletions(-) diff --git a/armsrc/appmain.c b/armsrc/appmain.c index c5c17867..58c979db 100644 --- a/armsrc/appmain.c +++ b/armsrc/appmain.c @@ -1059,6 +1059,9 @@ void UsbPacketReceived(uint8_t *packet, int len) case CMD_PCF7931_WRITE: WritePCF7931(c->d.asBytes[0],c->d.asBytes[1],c->d.asBytes[2],c->d.asBytes[3],c->d.asBytes[4],c->d.asBytes[5],c->d.asBytes[6], c->d.asBytes[9], c->d.asBytes[7]-128,c->d.asBytes[8]-128, c->arg[0], c->arg[1], c->arg[2]); break; + case CMD_PCF7931_BRUTEFORCE: + BruteForcePCF7931(c->arg[0], (c->arg[1] & 0xFF), c->d.asBytes[9], c->d.asBytes[7]-128,c->d.asBytes[8]-128); + break; case CMD_EM4X_READ_WORD: EM4xReadWord(c->arg[0], c->arg[1],c->arg[2]); break; diff --git a/armsrc/pcf7931.c b/armsrc/pcf7931.c index e4ba1da5..16b7912d 100644 --- a/armsrc/pcf7931.c +++ b/armsrc/pcf7931.c @@ -8,23 +8,21 @@ #define T0_PCF 8 //period for the pcf7931 in us #define ALLOC 16 -int DemodPCF7931(uint8_t **outBlocks) { - - uint8_t bits[256] = {0x00}; +size_t DemodPCF7931(uint8_t **outBlocks) { + uint8_t bits[256] = {0x00}; uint8_t blocks[8][16]; - uint8_t *dest = BigBuf_get_addr(); + uint8_t *dest = BigBuf_get_addr(); int GraphTraceLen = BigBuf_max_traceLen(); - if ( GraphTraceLen > 18000 ) + if (GraphTraceLen > 18000) GraphTraceLen = 18000; - int i, j, lastval, bitidx, half_switch; int clock = 64; int tolerance = clock / 8; int pmc, block_done; int lc, warnings = 0; - int num_blocks = 0; + size_t num_blocks = 0; int lmin=128, lmax=128; uint8_t dir; //clear read buffer @@ -39,17 +37,16 @@ int DemodPCF7931(uint8_t **outBlocks) { i = 2; /* Find first local max/min */ - if(dest[1] > dest[0]) { + if(dest[1] > dest[0]) { while(i < GraphTraceLen) { - if( !(dest[i] > dest[i-1]) && dest[i] > lmax) + if( !(dest[i] > dest[i-1]) && dest[i] > lmax) break; i++; } dir = 0; - } - else { + } else { while(i < GraphTraceLen) { - if( !(dest[i] < dest[i-1]) && dest[i] < lmin) + if( !(dest[i] < dest[i-1]) && dest[i] < lmin) break; i++; } @@ -61,10 +58,8 @@ int DemodPCF7931(uint8_t **outBlocks) { pmc = 0; block_done = 0; - for (bitidx = 0; i < GraphTraceLen; i++) - { - if ( (dest[i-1] > dest[i] && dir == 1 && dest[i] > lmax) || (dest[i-1] < dest[i] && dir == 0 && dest[i] < lmin)) - { + for (bitidx = 0; i < GraphTraceLen; i++) { + if ((dest[i-1] > dest[i] && dir == 1 && dest[i] > lmax) || (dest[i-1] < dest[i] && dir == 0 && dest[i] < lmin)) { lc = i - lastval; lastval = i; @@ -78,8 +73,7 @@ int DemodPCF7931(uint8_t **outBlocks) { lastval = i; pmc = 0; block_done = 1; - } - else { + } else { pmc = i; } } else if (ABS(lc-clock/2) < tolerance) { @@ -90,21 +84,18 @@ int DemodPCF7931(uint8_t **outBlocks) { lastval = i; pmc = 0; block_done = 1; - } - else if(half_switch == 1) { - bits[bitidx++] = 0; + } else if(half_switch == 1) { + bits[bitidx++] = 0; half_switch = 0; } else half_switch++; } else if (ABS(lc-clock) < tolerance) { // 64TO - bits[bitidx++] = 1; + bits[bitidx++] = 1; } else { // Error - warnings++; - if (warnings > 10) - { + if (++warnings > 10) { Dbprintf("Error: too many detection errors, aborting."); return 0; } @@ -112,16 +103,17 @@ int DemodPCF7931(uint8_t **outBlocks) { if(block_done == 1) { if(bitidx == 128) { - for(j=0; j<16; j++) { - blocks[num_blocks][j] = 128*bits[j*8+7]+ - 64*bits[j*8+6]+ - 32*bits[j*8+5]+ - 16*bits[j*8+4]+ - 8*bits[j*8+3]+ - 4*bits[j*8+2]+ - 2*bits[j*8+1]+ - bits[j*8]; - + for(j = 0; j < 16; ++j) { + blocks[num_blocks][j] = + 128 * bits[j*8 + 7]+ + 64 * bits[j*8 + 6] + + 32 * bits[j*8 + 5] + + 16 * bits[j*8 + 4] + + 8 * bits[j*8 + 3] + + 4 * bits[j*8 + 2] + + 2 * bits[j*8 + 1] + + bits[j*8] + ; } num_blocks++; } @@ -130,272 +122,349 @@ int DemodPCF7931(uint8_t **outBlocks) { half_switch = 0; } if(i < GraphTraceLen) - dir =(dest[i-1] > dest[i]) ? 0 : 1; + dir = (dest[i-1] > dest[i]) ? 0 : 1; } if(bitidx==255) bitidx=0; warnings = 0; if(num_blocks == 4) break; } - memcpy(outBlocks, blocks, 16*num_blocks); + memcpy(outBlocks, blocks, 16 * num_blocks); return num_blocks; } -int IsBlock0PCF7931(uint8_t *Block) { - // Assume RFU means 0 :) - if((memcmp(Block, "\x00\x00\x00\x00\x00\x00\x00\x01", 8) == 0) && memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) // PAC enabled - return 1; - if((memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) && Block[7] == 0) // PAC disabled, can it *really* happen ? - return 1; - return 0; +bool IsBlock0PCF7931(uint8_t *block) { + // assuming all RFU bits are set to 0 + // if PAC is enabled password is set to 0 + if (block[7] == 0x01) + { + if (!memcmp(block, "\x00\x00\x00\x00\x00\x00\x00", 7) && !memcmp(block+9, "\x00\x00\x00\x00\x00\x00\x00", 7)) + return true; + } + else if (block[7] == 0x00) + { + if (!memcmp(block+9, "\x00\x00\x00\x00\x00\x00\x00", 7)) + return true; + } + return false; } -int IsBlock1PCF7931(uint8_t *Block) { - // Assume RFU means 0 :) - if(Block[10] == 0 && Block[11] == 0 && Block[12] == 0 && Block[13] == 0) - if((Block[14] & 0x7f) <= 9 && Block[15] <= 9) - return 1; +bool IsBlock1PCF7931(uint8_t *block) { + // assuming all RFU bits are set to 0 + if (block[10] == 0 && block[11] == 0 && block[12] == 0 && block[13] == 0) + if((block[14] & 0x7f) <= 9 && block[15] <= 9) + return true; - return 0; + return false; } void ReadPCF7931() { - uint8_t Blocks[8][17]; - uint8_t tmpBlocks[4][16]; - int i, j, ind, ind2, n; - int num_blocks = 0; - int max_blocks = 8; - int ident = 0; - int error = 0; - int tries = 0; + int found_blocks = 0; // successfully read blocks + int max_blocks = 8; // readable blocks + uint8_t memory_blocks[8][17]; // PCF content + + uint8_t single_blocks[8][17]; // PFC blocks with unknown position + int single_blocks_cnt = 0; - memset(Blocks, 0, 8*17*sizeof(uint8_t)); + size_t n = 0; // transmitted blocks + uint8_t tmp_blocks[4][16]; // temporary read buffer + + uint8_t found_0_1 = 0; // flag: blocks 0 and 1 were found + int errors = 0; // error counter + int tries = 0; // tries counter + + memset(memory_blocks, 0, 8*17*sizeof(uint8_t)); + memset(single_blocks, 0, 8*17*sizeof(uint8_t)); + + int i = 0, j = 0; do { - memset(tmpBlocks, 0, 4*16*sizeof(uint8_t)); - n = DemodPCF7931((uint8_t**)tmpBlocks); + i = 0; + + memset(tmp_blocks, 0, 4*16*sizeof(uint8_t)); + n = DemodPCF7931((uint8_t**)tmp_blocks); if(!n) - error++; - if(error==10 && num_blocks == 0) { + ++errors; + + // exit if no block is received + if (errors >= 10 && found_blocks == 0 && single_blocks_cnt == 0) { Dbprintf("Error, no tag or bad tag"); return; } - else if (tries==20 || error==10) { + // exit if too many errors during reading + if (tries > 50 && (2*errors > tries)) { Dbprintf("Error reading the tag"); Dbprintf("Here is the partial content"); goto end; } - - for(i=0; i= 0; ind--,ind2--) { - if(ind2 < 0) - ind2 = max_blocks; - if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found - // Dbprintf("Tmp %d -> Block %d", ind, ind2); - memcpy(Blocks[ind2], tmpBlocks[ind], 16); - Blocks[ind2][ALLOC] = 1; - num_blocks++; - if(num_blocks == max_blocks) goto end; - } - } - for(ind=i+1,ind2=j+1; ind < n; ind++,ind2++) { - if(ind2 > max_blocks) - ind2 = 0; - if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found - // Dbprintf("Tmp %d -> Block %d", ind, ind2); - memcpy(Blocks[ind2], tmpBlocks[ind], 16); - Blocks[ind2][ALLOC] = 1; - num_blocks++; - if(num_blocks == max_blocks) goto end; - } + ++tries; + continue; + } + + Dbprintf("(dbg) got %d blocks (%d/%d found) (%d tries, %d errors)", n, found_blocks, (max_blocks == 0 ? found_blocks : max_blocks), tries, errors); + + i = 0; + if(!found_0_1) { + while (i < n - 1) { + if (IsBlock0PCF7931(tmp_blocks[i]) && IsBlock1PCF7931(tmp_blocks[i+1])) { + found_0_1 = 1; + memcpy(memory_blocks[0], tmp_blocks[i], 16); + memcpy(memory_blocks[1], tmp_blocks[i+1], 16); + memory_blocks[0][ALLOC] = memory_blocks[1][ALLOC] = 1; + // block 1 tells how many blocks are going to be sent + max_blocks = MAX((memory_blocks[1][14] & 0x7f), memory_blocks[1][15]) + 1; + found_blocks = 2; + + Dbprintf("Found blocks 0 and 1. PCF is transmitting %d blocks.", max_blocks); + + // handle the following blocks + for (j = i + 2; j < n; ++j) { + memcpy(memory_blocks[found_blocks], tmp_blocks[j], 16); + memory_blocks[found_blocks][ALLOC] = 1; + ++found_blocks; + } + break; + } + ++i; + } + } else { + // Trying to re-order blocks + // Look for identical block in memory blocks + while (i < n-1) { + // skip all zeroes blocks + if (memcmp(tmp_blocks[i], "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16)) { + for (j = 1; j < max_blocks - 1; ++j) { + if (!memcmp(tmp_blocks[i], memory_blocks[j], 16) && !memory_blocks[j+1][ALLOC]) { + memcpy(memory_blocks[j+1], tmp_blocks[i+1], 16); + memory_blocks[j+1][ALLOC] = 1; + if (++found_blocks >= max_blocks) goto end; + } + } + } + if (memcmp(tmp_blocks[i+1], "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16)) { + for (j = 0; j < max_blocks; ++j) { + if (!memcmp(tmp_blocks[i+1], memory_blocks[j], 16) && !memory_blocks[(j == 0 ? max_blocks : j) -1][ALLOC]) { + if (j == 0) { + memcpy(memory_blocks[max_blocks - 1], tmp_blocks[i], 16); + memory_blocks[max_blocks - 1][ALLOC] = 1; + } else { + memcpy(memory_blocks[j-1], tmp_blocks[i], 16); + memory_blocks[j-1][ALLOC] = 1; } + if (++found_blocks >= max_blocks) goto end; } } } + ++i; } } - tries++; - if (BUTTON_PRESS()) return; - } while (num_blocks != max_blocks); + ++tries; + if (BUTTON_PRESS()) { + Dbprintf("Button pressed, stopping."); + goto end; + } + } + while (found_blocks != max_blocks); + end: Dbprintf("-----------------------------------------"); Dbprintf("Memory content:"); Dbprintf("-----------------------------------------"); - for(i=0; i", i); } Dbprintf("-----------------------------------------"); - + + if (found_blocks < max_blocks) { + Dbprintf("-----------------------------------------"); + Dbprintf("Blocks with unknown position:"); + Dbprintf("-----------------------------------------"); + for (i = 0; i < single_blocks_cnt; ++i) + print_result("Block", single_blocks[i], 16); + + Dbprintf("-----------------------------------------"); + } cmd_send(CMD_ACK,0,0,0,0,0); } - -/* Write on a byte of a PCF7931 tag - * @param address : address of the block to write - @param byte : address of the byte to write - @param data : data to write - */ -void WritePCF7931(uint8_t pass1, uint8_t pass2, uint8_t pass3, uint8_t pass4, uint8_t pass5, uint8_t pass6, uint8_t pass7, uint16_t init_delay, int32_t l, int32_t p, uint8_t address, uint8_t byte, uint8_t data) -{ - +static void RealWritePCF7931(uint8_t *pass, uint16_t init_delay, int32_t l, int32_t p, uint8_t address, uint8_t byte, uint8_t data) { uint32_t tab[1024]={0}; // data times frame uint32_t u = 0; uint8_t parity = 0; bool comp = 0; //BUILD OF THE DATA FRAME - //alimentation of the tag (time for initializing) AddPatternPCF7931(init_delay, 0, 8192/2*T0_PCF, tab); - - //PMC - Dbprintf("Initialization delay : %d us", init_delay); AddPatternPCF7931(8192/2*T0_PCF + 319*T0_PCF+70, 3*T0_PCF, 29*T0_PCF, tab); - - Dbprintf("Offsets : %d us on the low pulses width, %d us on the low pulses positions", l, p); - //password indication bit AddBitPCF7931(1, tab, l, p); - - - //password (on 56 bits) - Dbprintf("Password (LSB first on each byte) : %02x %02x %02x %02x %02x %02x %02x", pass1,pass2,pass3,pass4,pass5,pass6,pass7); - AddBytePCF7931(pass1, tab, l, p); - AddBytePCF7931(pass2, tab, l, p); - AddBytePCF7931(pass3, tab, l, p); - AddBytePCF7931(pass4, tab, l, p); - AddBytePCF7931(pass5, tab, l, p); - AddBytePCF7931(pass6, tab, l, p); - AddBytePCF7931(pass7, tab, l, p); - + // password (on 56 bits) + AddBytePCF7931(pass[0], tab, l, p); + AddBytePCF7931(pass[1], tab, l, p); + AddBytePCF7931(pass[2], tab, l, p); + AddBytePCF7931(pass[3], tab, l, p); + AddBytePCF7931(pass[4], tab, l, p); + AddBytePCF7931(pass[5], tab, l, p); + AddBytePCF7931(pass[6], tab, l, p); //programming mode (0 or 1) AddBitPCF7931(0, tab, l, p); - + //block adress on 6 bits - Dbprintf("Block address : %02x", address); - for (u=0; u<6; u++) - { - if (address&(1< 0xFFFF){ + for (u = 0; tab[u] != 0; ++u) + if(tab[u] > 0xFFFF) { tab[u] -= 0xFFFF; comp = 0; } - } } SendCmdPCF7931(tab); } +void BruteForcePCF7931(uint64_t password, uint8_t tries, uint16_t init_delay, int32_t l, int32_t p) { + uint8_t i = 0; + uint8_t pass_array[7]; + + while (password < 0x00FFFFFFFFFFFFFF) { + if (BUTTON_PRESS()) { + Dbprintf("Button pressed, stopping bruteforce ..."); + return; + } + + pass_array[0] = password & 0xFF; + pass_array[1] = (password >> 8) & 0xFF; + pass_array[2] = (password >> 16) & 0xFF; + pass_array[3] = (password >> 24) & 0xFF; + pass_array[4] = (password >> 32) & 0xFF; + pass_array[5] = (password >> 40) & 0xFF; + pass_array[6] = (password >> 48) & 0xFF; + + Dbprintf("Trying: %02x %02x %02x %02x %02x %02x %02x ...", + pass_array[0], + pass_array[1], + pass_array[2], + pass_array[3], + pass_array[4], + pass_array[5], + pass_array[6]); + + for (i = 0; i < tries; ++i) + RealWritePCF7931 + ( + pass_array, + init_delay, + l, + p, + 0, + 7, + 0x01 + ); + + ++password; + } +} + +/* Write on a byte of a PCF7931 tag + * @param address : address of the block to write + @param byte : address of the byte to write + @param data : data to write + */ +void WritePCF7931(uint8_t pass1, uint8_t pass2, uint8_t pass3, uint8_t pass4, uint8_t pass5, uint8_t pass6, uint8_t pass7, uint16_t init_delay, int32_t l, int32_t p, uint8_t address, uint8_t byte, uint8_t data) { + Dbprintf("Initialization delay : %d us", init_delay); + Dbprintf("Offsets : %d us on the low pulses width, %d us on the low pulses positions", l, p); + Dbprintf("Password (LSB first on each byte): %02x %02x %02x %02x %02x %02x %02x", pass1, pass2, pass3, pass4, pass5, pass6, pass7); + Dbprintf("Block address : %02x", address); + Dbprintf("Byte address : %02x", byte); + Dbprintf("Data : %02x", data); + + uint8_t password[7] = {pass1, pass2, pass3, pass4, pass5, pass6, pass7}; + + RealWritePCF7931 (password, init_delay, l, p, address, byte, data); +} + /* Send a trame to a PCF7931 tags * @param tab : array of the data frame */ -void SendCmdPCF7931(uint32_t * tab){ +void SendCmdPCF7931(uint32_t * tab) { uint16_t u=0; uint16_t tempo=0; - Dbprintf("SENDING DATA FRAME..."); + Dbprintf("Sending data frame ..."); FpgaDownloadAndGo(FPGA_BITSTREAM_LF); - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU ); LED_A_ON(); @@ -412,41 +481,30 @@ void SendCmdPCF7931(uint32_t * tab){ AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN; AT91C_BASE_TCB->TCB_BCR = 1; - tempo = AT91C_BASE_TC0->TC_CV; - for(u=0;tab[u]!= 0;u+=3){ - - + for (u = 0; tab[u] != 0; u += 3) { // modulate antenna HIGH(GPIO_SSC_DOUT); - while(tempo != tab[u]){ + while(tempo != tab[u]) tempo = AT91C_BASE_TC0->TC_CV; - } - + // stop modulating antenna LOW(GPIO_SSC_DOUT); - while(tempo != tab[u+1]){ + while(tempo != tab[u+1]) tempo = AT91C_BASE_TC0->TC_CV; - } - // modulate antenna HIGH(GPIO_SSC_DOUT); - while(tempo != tab[u+2]){ + while(tempo != tab[u+2]) tempo = AT91C_BASE_TC0->TC_CV; - } - - } LED_A_OFF(); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); SpinDelay(200); - AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS; // timer disable - DbpString("FINISH !"); - DbpString("(Could be usefull to send the same trame many times)"); + DbpString("Data frame sent (multiple sends may be needed)"); LED(0xFFFF, 1000); } @@ -457,15 +515,12 @@ void SendCmdPCF7931(uint32_t * tab){ * @param l : offset on low pulse width * @param p : offset on low pulse positioning */ - -bool AddBytePCF7931(uint8_t byte, uint32_t * tab, int32_t l, int32_t p){ - +bool AddBytePCF7931(uint8_t byte, uint32_t * tab, int32_t l, int32_t p) { uint32_t u; - for (u=0; u<8; u++) - { - if (byte&(1< // 2015 Dake +// 2018 sguerrini97 // This code is licensed to you under the terms of the GNU GPL, version 2 or, // at your option, any later version. See the LICENSE.txt file for the text of @@ -76,6 +77,21 @@ int usage_pcf7931_write(){ return 0; } +int usage_pcf7931_bruteforce() +{ + PrintAndLog("Usage: lf pcf7931 bruteforce [h] "); + PrintAndLog("This command tries to disable PAC of a PCF7931 transponder by bruteforcing the password."); + PrintAndLog("!! THIS IS NOT INTENDED TO RECOVER THE FULL PASSWORD !!"); + PrintAndLog("!! DO NOT USE UNLESS THE FIRST 5 BYTES OF THE PASSWORD ARE KNOWN !!"); + PrintAndLog("Options:"); + PrintAndLog(" h This help"); + PrintAndLog(" start password hex password to start from"); + PrintAndLog(" tries How many times to send the same data frame"); + PrintAndLog("Examples:"); + PrintAndLog(" lf pcf7931 bruteforce 00000000123456 3"); + return 0; +} + int usage_pcf7931_config(){ PrintAndLog("Usage: lf pcf7931 config [h] [r] "); PrintAndLog("This command tries to set the configuration used with PCF7931 commands"); @@ -159,12 +175,47 @@ int CmdLFPCF7931Write(const char *Cmd){ return 0; } +int CmdLFPCF7931BruteForce(const char *Cmd){ + + uint8_t ctmp = param_getchar(Cmd, 0); + if (strlen(Cmd) < 1 || ctmp == 'h' || ctmp == 'H') return usage_pcf7931_bruteforce(); + + uint64_t start_password = 0; + uint8_t tries = 3; + + if (param_gethex(Cmd, 0, (uint8_t*)(&start_password), 14)) return usage_pcf7931_bruteforce(); + if (param_getdec(Cmd, 1, &tries)) return usage_pcf7931_bruteforce(); + + PrintAndLog("Bruteforcing from password: %02x %02x %02x %02x %02x %02x %02x", + start_password & 0xFF, + (start_password >> 8) & 0xFF, + (start_password >> 16) & 0xFF, + (start_password >> 24) & 0xFF, + (start_password >> 32) & 0xFF, + (start_password >> 48) & 0xFF, + (start_password >> 56) & 0xFF); + + PrintAndLog("Trying each password %d times", tries); + + UsbCommand c = {CMD_PCF7931_BRUTEFORCE, {start_password, tries} }; + + c.d.asDwords[7] = (configPcf.OffsetWidth + 128); + c.d.asDwords[8] = (configPcf.OffsetPosition + 128); + c.d.asDwords[9] = configPcf.InitDelay; + + clearCommandBuffer(); + SendCommand(&c); + //no ack? + return 0; +} + static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, {"read", CmdLFPCF7931Read, 0, "Read content of a PCF7931 transponder"}, {"write", CmdLFPCF7931Write, 0, "Write data on a PCF7931 transponder."}, {"config", CmdLFPCF7931Config, 1, "Configure the password, the tags initialization delay and time offsets (optional)"}, + {"bruteforce", CmdLFPCF7931BruteForce, 0, "Bruteforce a PCF7931 transponder password."}, {NULL, NULL, 0, NULL} }; diff --git a/client/cmdlfpcf7931.h b/client/cmdlfpcf7931.h index 8b24f03a..32f8491e 100644 --- a/client/cmdlfpcf7931.h +++ b/client/cmdlfpcf7931.h @@ -1,6 +1,7 @@ //----------------------------------------------------------------------------- // Copyright (C) 2012 Chalk // 2015 Dake +// 2018 sguerrini97 // This code is licensed to you under the terms of the GNU GPL, version 2 or, // at your option, any later version. See the LICENSE.txt file for the text of @@ -26,12 +27,14 @@ int pcf7931_printConfig(); int usage_pcf7931_read(); int usage_pcf7931_write(); +int usage_pcf7931_bruteforce(); int usage_pcf7931_config(); int CmdLFPCF7931(const char *Cmd); int CmdLFPCF7931Read(const char *Cmd); int CmdLFPCF7931Write(const char *Cmd); +int CmdLFPCF7931BruteForce(const char *Cmd); int CmdLFPCF7931Config(const char *Cmd); #endif diff --git a/include/usb_cmd.h b/include/usb_cmd.h index 306c52bf..32296ba3 100644 --- a/include/usb_cmd.h +++ b/include/usb_cmd.h @@ -97,6 +97,7 @@ typedef struct{ #define CMD_T55XX_RESET_READ 0x0216 #define CMD_PCF7931_READ 0x0217 #define CMD_PCF7931_WRITE 0x0222 +#define CMD_PCF7931_BRUTEFORCE 0x0226 #define CMD_EM4X_READ_WORD 0x0218 #define CMD_EM4X_WRITE_WORD 0x0219 #define CMD_IO_DEMOD_FSK 0x021A -- 2.39.2