mirror of
https://github.com/RfidResearchGroup/proxmark3.git
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267 lines
8.7 KiB
C
267 lines
8.7 KiB
C
//-----------------------------------------------------------------------------
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// Authored by Craig Young <cyoung@tripwire.com> based on cmdlfhid.c structure
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//
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// cmdlfhid.c is Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
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//
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// Low frequency AWID26 commands
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//-----------------------------------------------------------------------------
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#include <stdio.h> // sscanf
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#include "proxmark3.h" // Definitions, USB controls, etc
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#include "ui.h" // PrintAndLog
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#include "cmdparser.h" // CmdsParse, CmdsHelp
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#include "cmdlfawid.h" // AWID function declarations
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#include "lfdemod.h" // parityTest
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#include "util.h" // weigandparity
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#include "protocols.h" // for T55xx config register definitions
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#include "cmdmain.h"
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#include "sleep.h"
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static int CmdHelp(const char *Cmd);
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int usage_lf_awid_fskdemod(void) {
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PrintAndLog("Enables AWID26 compatible reader mode printing details of scanned AWID26 tags.");
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PrintAndLog("By default, values are printed and logged until the button is pressed or another USB command is issued.");
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PrintAndLog("If the ['1'] option is provided, reader mode is exited after reading a single AWID26 card.");
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PrintAndLog("");
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PrintAndLog("Usage: lf awid fskdemod ['1']");
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PrintAndLog("Options :");
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PrintAndLog(" 1 : (optional) stop after reading a single card");
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PrintAndLog("");
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PrintAndLog("Samples : lf awid fskdemod");
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PrintAndLog(" : lf awid fskdemod 1");
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return 0;
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}
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int usage_lf_awid_sim(void) {
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PrintAndLog("Enables simulation of AWID26 card with specified facility-code and card number.");
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PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
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PrintAndLog("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit. Larger values are truncated.");
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PrintAndLog("");
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PrintAndLog("Usage: lf awid sim <Facility-Code> <Card-Number>");
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PrintAndLog("Options :");
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PrintAndLog(" <Facility-Code> : 8-bit value AWID facility code");
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PrintAndLog(" <Card Number> : 16-bit value AWID card number");
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PrintAndLog("");
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PrintAndLog("Sample : lf awid sim 224 1337");
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return 0;
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}
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int usage_lf_awid_clone(void) {
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PrintAndLog("Enables cloning of AWID26 card with specified facility-code and card number onto T55x7.");
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PrintAndLog("The T55x7 must be on the antenna when issuing this command. T55x7 blocks are calculated and printed in the process.");
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PrintAndLog("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit. Larger values are truncated.");
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PrintAndLog("");
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PrintAndLog("Usage: lf awid clone <Facility-Code> <Card-Number>");
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PrintAndLog("Options :");
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PrintAndLog(" <Facility-Code> : 8-bit value AWID facility code");
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PrintAndLog(" <Card Number> : 16-bit value AWID card number");
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PrintAndLog(" Q5 : optional - clone to Q5 (T5555) instead of T55x7 chip");
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PrintAndLog("");
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PrintAndLog("Sample : lf awid clone 224 1337");
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return 0;
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}
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int usage_lf_awid_brute(void){
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PrintAndLog("Enables bruteforce of AWID26 reader with specified facility-code.");
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PrintAndLog("Per AWID26 format, the facility-code (FC) is 8-bit and the card number is 16-bit.");
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PrintAndLog("This is a incremental attack against reader.");
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PrintAndLog("");
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PrintAndLog("Usage: lf awid brute <Facility-Code>");
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PrintAndLog("Options :");
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PrintAndLog(" <Facility-Code> : 8-bit value AWID facility code");
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PrintAndLog("");
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PrintAndLog("Sample : lf awid brute 224");
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return 0;
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}
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int CmdAWIDDemodFSK(const char *Cmd) {
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int findone = 0;
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if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod();
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if (Cmd[0] == '1') findone = 1;
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UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
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clearCommandBuffer();
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SendCommand(&c);
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return 0;
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}
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//refactored by marshmellow
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int getAWIDBits(uint32_t fc, uint32_t cn, uint8_t *AWIDBits) {
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uint8_t pre[66];
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memset(pre, 0, sizeof(pre));
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AWIDBits[7]=1;
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num_to_bytebits(26, 8, pre);
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uint8_t wiegand[24];
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num_to_bytebits(fc, 8, wiegand);
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num_to_bytebits(cn, 16, wiegand+8);
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wiegand_add_parity(pre+8, wiegand, 24);
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size_t bitLen = addParity(pre, AWIDBits+8, 66, 4, 1);
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if (bitLen != 88) return 0;
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return 1;
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}
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int CmdAWIDSim(const char *Cmd) {
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uint32_t fcode = 0, cnum = 0, fc = 0, cn = 0;
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uint8_t bits[96];
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uint8_t *bs = bits;
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size_t size = sizeof(bits);
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memset(bs, 0x00, size);
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uint64_t arg1 = ( 10 << 8 ) + 8; // fcHigh = 10, fcLow = 8
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uint64_t arg2 = 50; // clk RF/50 invert=0
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if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_sim();
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fcode = (fc & 0x000000FF);
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cnum = (cn & 0x0000FFFF);
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if (fc != fcode) PrintAndLog("Facility-Code (%u) truncated to 8-bits: %u", fc, fcode);
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if (cn != cnum) PrintAndLog("Card number (%u) truncated to 16-bits: %u", cn, cnum);
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PrintAndLog("Emulating AWID26 -- FC: %u; CN: %u\n", fcode, cnum);
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PrintAndLog("Press pm3-button to abort simulation or run another command");
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if (!getAWIDBits(fc, cn, bs)) {
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PrintAndLog("Error with tag bitstream generation.");
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return 1;
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}
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// AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
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// arg1 --- fcHigh<<8 + fcLow
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// arg2 --- Inversion and clk setting
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// 96 --- Bitstream length: 96-bits == 12 bytes
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UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
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memcpy(c.d.asBytes, bs, size);
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clearCommandBuffer();
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SendCommand(&c);
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return 0;
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}
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int CmdAWIDClone(const char *Cmd) {
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uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
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uint32_t fc=0,cn=0;
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uint8_t bits[96];
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uint8_t *bs=bits;
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memset(bs,0,sizeof(bits));
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if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_clone();
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if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
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blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 50<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
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if ((fc & 0xFF) != fc) {
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fc &= 0xFF;
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PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
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}
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if ((cn & 0xFFFF) != cn) {
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cn &= 0xFFFF;
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PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
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}
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if ( !getAWIDBits(fc, cn, bs)) {
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PrintAndLog("Error with tag bitstream generation.");
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return 1;
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}
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blocks[1] = bytebits_to_byte(bs,32);
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blocks[2] = bytebits_to_byte(bs+32,32);
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blocks[3] = bytebits_to_byte(bs+64,32);
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PrintAndLog("Preparing to clone AWID26 to T55x7 with FC: %u, CN: %u",
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fc, cn);
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PrintAndLog("Blk | Data ");
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PrintAndLog("----+------------");
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PrintAndLog(" 00 | 0x%08x", blocks[0]);
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PrintAndLog(" 01 | 0x%08x", blocks[1]);
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PrintAndLog(" 02 | 0x%08x", blocks[2]);
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PrintAndLog(" 03 | 0x%08x", blocks[3]);
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UsbCommand resp;
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UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
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for (uint8_t i=0; i<4; i++) {
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c.arg[0] = blocks[i];
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c.arg[1] = i;
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clearCommandBuffer();
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SendCommand(&c);
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if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
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PrintAndLog("Error occurred, device did not respond during write operation.");
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return -1;
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}
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}
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return 0;
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}
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int CmdAWIDBrute(const char *Cmd){
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uint8_t fc = 0x00;
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uint8_t bits[96];
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uint8_t *bs = bits;
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size_t size = sizeof(bits);
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memset(bs, 0x00, size);
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char cmdp = param_getchar(Cmd, 0);
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if (strlen(Cmd) > 3 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_brute();
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fc = param_get8(Cmd, 0);
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if ( fc == 0) return usage_lf_awid_brute();
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PrintAndLog("Bruteforceing AWID26 Reader");
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PrintAndLog("Press pm3-button to abort simulation or run another command");
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uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
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uint64_t arg2 = 50; // clk RF/50 invert=0
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UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
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for ( uint16_t cn = 1; cn < 0xFFFF; ++cn){
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if (ukbhit()) {
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PrintAndLog("aborted via keyboard!");
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c.cmd = CMD_PING;
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c.arg[0] = 0x00;
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c.arg[1] = 0x00;
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c.arg[2] = 0x00;
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clearCommandBuffer();
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SendCommand(&c);
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return 1;
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}
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(void)getAWIDBits(fc, cn, bs);
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memcpy(c.d.asBytes, bs, size);
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clearCommandBuffer();
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SendCommand(&c);
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PrintAndLog("Trying FC: %u; CN: %u", fc, cn);
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// pause
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sleep(1);
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}
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return 0;
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}
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static command_t CommandTable[] = {
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{"help", CmdHelp, 1, "This help"},
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{"fskdemod", CmdAWIDDemodFSK, 0, "['1'] Realtime AWID FSK demodulator (option '1' for one tag only)"},
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{"sim", CmdAWIDSim, 0, "<Facility-Code> <Card Number> -- AWID tag simulator"},
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{"clone", CmdAWIDClone, 0, "<Facility-Code> <Card Number> <Q5> -- Clone AWID to T55x7"},
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{"brute", CmdAWIDBrute, 0, "<Facility-Code> -- bruteforce card number"},
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{NULL, NULL, 0, NULL}
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};
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int CmdLFAWID(const char *Cmd) {
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clearCommandBuffer();
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CmdsParse(CommandTable, Cmd);
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return 0;
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}
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int CmdHelp(const char *Cmd) {
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CmdsHelp(CommandTable);
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return 0;
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}
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