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593 lines
17 KiB
C
593 lines
17 KiB
C
//-----------------------------------------------------------------------------
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// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
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// 2016,2017, marshmellow, iceman
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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 HID commands
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//-----------------------------------------------------------------------------
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#include "cmdlfhid.h"
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#ifndef BITS
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# define BITS 96
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#endif
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static int CmdHelp(const char *Cmd);
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int usage_lf_hid_read(void){
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PrintAndLog("Enables HID compatible reader mode printing details.");
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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 HID card.");
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PrintAndLog("");
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PrintAndLog("Usage: lf hid read [h] [1]");
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PrintAndLog("Options:");
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PrintAndLog(" h : This help");
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PrintAndLog(" 1 : (optional) stop after reading a single card");
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PrintAndLog("");
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PrintAndLog("Examples:");
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PrintAndLog(" lf hid read");
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PrintAndLog(" lf hid read 1");
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return 0;
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}
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int usage_lf_hid_wiegand(void){
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PrintAndLog("This command converts facility code/card number to Wiegand code");
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PrintAndLog("");
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PrintAndLog("Usage: lf hid wiegand [h] [OEM] [FC] [CN]");
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PrintAndLog("Options:");
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PrintAndLog(" h - This help");
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PrintAndLog(" OEM - OEM number / site code");
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PrintAndLog(" FC - facility code");
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PrintAndLog(" CN - card number");
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PrintAndLog("Examples:");
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PrintAndLog(" lf hid wiegand 0 101 2001");
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return 0;
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}
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int usage_lf_hid_sim(void){
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PrintAndLog("Enables simulation of HID card with 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("");
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PrintAndLog("Usage: lf hid sim [h] [ID]");
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PrintAndLog("Options:");
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PrintAndLog(" h - This help");
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PrintAndLog(" ID - HID id");
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PrintAndLog("Examples:");
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PrintAndLog(" lf hid sim 2006ec0c86");
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return 0;
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}
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int usage_lf_hid_clone(void){
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PrintAndLog("Clone HID to T55x7. Tag must be on antenna. ");
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PrintAndLog("");
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PrintAndLog("Usage: lf hid clone [h] [ID] <L>");
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PrintAndLog("Options:");
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PrintAndLog(" h - This help");
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PrintAndLog(" ID - HID id");
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PrintAndLog(" L - 84bit ID");
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PrintAndLog("Examples:");
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PrintAndLog(" lf hid clone 2006ec0c86");
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PrintAndLog(" lf hid clone 2006ec0c86 L");
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return 0;
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}
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int usage_lf_hid_brute(void){
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PrintAndLog("Enables bruteforce of HID readers with specified facility code.");
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PrintAndLog("This is a attack against reader. if cardnumber is given, it starts with it and goes up / down one step");
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PrintAndLog("if cardnumber is not given, it starts with 1 and goes up to 65535");
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PrintAndLog("");
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PrintAndLog("Usage: lf hid brute [h] [v] a <format> f <facility-code> c <cardnumber> d <delay>");
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PrintAndLog("Options:");
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PrintAndLog(" h : This help");
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PrintAndLog(" a <format> : 26|33|34|35|37|40|44|84");
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PrintAndLog(" f <facility-code> : 8-bit value HID facility code");
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PrintAndLog(" c <cardnumber> : (optional) cardnumber to start with, max 65535");
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PrintAndLog(" d <delay> : delay betweens attempts in ms. Default 1000ms");
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PrintAndLog(" v : verbose logging, show all tries");
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PrintAndLog("");
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PrintAndLog("Examples:");
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PrintAndLog(" lf hid brute a 26 f 224");
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PrintAndLog(" lf hid brute a 26 f 21 d 2000");
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PrintAndLog(" lf hid brute v a 26 f 21 c 200 d 2000");
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return 0;
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}
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// sending three times. Didn't seem to break the previous sim?
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static bool sendPing(void){
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UsbCommand ping = {CMD_PING, {1, 2, 3}};
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SendCommand(&ping);
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SendCommand(&ping);
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SendCommand(&ping);
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clearCommandBuffer();
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UsbCommand resp;
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if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000))
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return false;
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return true;
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}
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static bool sendTry(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint32_t delay, uint8_t *bits, bool verbose){
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// this should be optional.
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if ( verbose )
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PrintAndLog("Trying FC: %u; CN: %u", fc, cn);
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calcWiegand( fmtlen, fc, cn, bits);
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uint64_t arg1 = bytebits_to_byte(bits, 32);
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uint64_t arg2 = bytebits_to_byte(bits + 32, 32);
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UsbCommand c = {CMD_HID_SIM_TAG, {arg1, arg2, 0}};
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clearCommandBuffer();
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SendCommand(&c);
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msleep(delay);
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sendPing();
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return true;
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}
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//by marshmellow (based on existing demod + holiman's refactor)
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//HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
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//print full HID Prox ID and some bit format details if found
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int CmdHIDDemod(const char *Cmd) {
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//raw fsk demod no manchester decoding no start bit finding just get binary from wave
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uint32_t hi2=0, hi=0, lo=0;
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uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0};
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size_t size = getFromGraphBuf(bits);
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if (size==0) {
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PrintAndLog("DEBUG: Error - HID not enough samples");
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return 0;
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}
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//get binary from fsk wave
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int waveIdx = 0;
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int idx = HIDdemodFSK(bits, &size, &hi2, &hi, &lo, &waveIdx);
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if (idx < 0) {
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if (g_debugMode){
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if (idx==-1){
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PrintAndLog("DEBUG: Error - HID not enough samples");
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} else if (idx == -2) {
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PrintAndLog("DEBUG: Error - HID just noise detected");
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} else if (idx == -3) {
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PrintAndLog("DEBUG: Error - HID problem during FSK demod");
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} else if (idx == -4) {
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PrintAndLog("DEBUG: Error - HID preamble not found");
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} else if (idx == -5) {
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PrintAndLog("DEBUG: Error - HID error in Manchester data, size %d", size);
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} else {
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PrintAndLog("DEBUG: Error - HID error demoding fsk %d", idx);
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}
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}
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return 0;
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}
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setDemodBuf(bits, size, idx);
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setClockGrid(50, waveIdx + (idx*50));
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if (hi2==0 && hi==0 && lo==0) {
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if (g_debugMode) PrintAndLog("DEBUG: Error - HID no values found");
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return 0;
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}
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if (hi2 != 0){ //extra large HID tags
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PrintAndLog("HID Prox TAG ID: %x%08x%08x (%u)", hi2, hi, lo, (lo>>1) & 0xFFFF);
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} else { //standard HID tags <38 bits
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uint8_t fmtLen = 0;
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uint32_t fc = 0;
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uint32_t cardnum = 0;
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if ((( hi >> 5) & 1) == 1){//if bit 38 is set then < 37 bit format is used
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uint32_t lo2=0;
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lo2=(((hi & 31) << 12) | (lo >> 20)); //get bits 21-37 to check for format len bit
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uint8_t idx3 = 1;
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while ( lo2 > 1){ //find last bit set to 1 (format len bit)
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lo2 >>= 1;
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idx3++;
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}
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fmtLen = idx3 + 19;
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fc = 0;
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cardnum = 0;
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if(fmtLen==26){
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cardnum = (lo >> 1) & 0xFFFF;
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fc = ( lo >> 17) & 0xFF;
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}
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if(fmtLen==34){
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cardnum = (lo >> 1) & 0xFFFF;
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fc= ((hi & 1)<< 15) | (lo >> 17);
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}
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if(fmtLen==35){
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cardnum = (lo >> 1) & 0xFFFFF;
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fc = ((hi & 1) << 11 ) | (lo >> 21);
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}
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}
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else { //if bit 38 is not set then 37 bit format is used
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fmtLen = 37;
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fc = 0;
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cardnum = 0;
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if(fmtLen == 37){
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cardnum = (lo >> 1 ) & 0x7FFFF;
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fc = ((hi & 0xF) << 12) | (lo >> 20);
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}
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}
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PrintAndLog("HID Prox TAG ID: %x%08x (%u) - Format Len: %ubit - FC: %u - Card: %u", hi, lo, (lo>>1) & 0xFFFF, fmtLen, fc, cardnum);
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}
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if (g_debugMode){
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PrintAndLog("DEBUG: HID idx: %d, Len: %d, Printing Demod Buffer:", idx, size);
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printDemodBuff();
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}
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return 1;
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}
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// this read is the "normal" read, which download lf signal and tries to demod here.
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int CmdHIDRead(const char *Cmd) {
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lf_read(true, 12000);
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return CmdHIDDemod(Cmd);
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}
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// this read loops on device side.
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// uses the demod in lfops.c
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int CmdHIDRead_device(const char *Cmd) {
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if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_hid_read();
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uint8_t findone = ( Cmd[0] == '1' ) ? 1 : 0;
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UsbCommand c = {CMD_HID_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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int CmdHIDSim(const char *Cmd) {
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uint32_t hi = 0, lo = 0;
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uint32_t n = 0, i = 0;
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uint8_t ctmp = param_getchar(Cmd, 0);
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if ( strlen(Cmd) == 0 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_hid_sim();
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while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
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hi = (hi << 4) | (lo >> 28);
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lo = (lo << 4) | (n & 0xf);
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}
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PrintAndLog("Emulating tag with ID %x%08x", hi, lo);
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PrintAndLog("Press pm3-button to abort simulation");
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UsbCommand c = {CMD_HID_SIM_TAG, {hi, lo, 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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int CmdHIDClone(const char *Cmd) {
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uint32_t hi2 = 0, hi = 0, lo = 0;
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uint32_t n = 0, i = 0;
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UsbCommand c;
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uint8_t ctmp = param_getchar(Cmd, 0);
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if ( strlen(Cmd) == 0 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_hid_clone();
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if (strchr(Cmd,'l') != 0) {
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while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
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hi2 = (hi2 << 4) | (hi >> 28);
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hi = (hi << 4) | (lo >> 28);
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lo = (lo << 4) | (n & 0xf);
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}
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PrintAndLog("Cloning tag with long ID %x%08x%08x", hi2, hi, lo);
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c.d.asBytes[0] = 1;
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} else {
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while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
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hi = (hi << 4) | (lo >> 28);
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lo = (lo << 4) | (n & 0xf);
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}
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PrintAndLog("Cloning tag with ID %x%08x", hi, lo);
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hi2 = 0;
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c.d.asBytes[0] = 0;
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}
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c.cmd = CMD_HID_CLONE_TAG;
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c.arg[0] = hi2;
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c.arg[1] = hi;
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c.arg[2] = lo;
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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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// struct to handle wiegand
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typedef struct {
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uint8_t FormatLen;
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uint8_t SiteCode;
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uint8_t FacilityCode;
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uint8_t CardNumber;
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uint8_t* Wiegand;
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size_t Wiegand_n;
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} wiegand_t;
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static void addHIDMarker(uint8_t fmtlen, uint8_t *out) {
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// temp array
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uint8_t arr[BITS];
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memset(arr, 0, BITS);
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// copy inpu
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uint8_t pos = sizeof(arr)-fmtlen;
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memcpy(arr+pos, out, fmtlen);
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switch(fmtlen) {
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case 26:{
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// start sentinel, BITS-bit 27 = 1
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arr[BITS-27] = 1;
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// fmt smaller than 37 used, bit37 = 1
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arr[BITS-38] = 1;
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memcpy(out, arr, BITS);
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break;
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}
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case 34:
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// start sentinel, BITS-bit 27 = 1
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arr[BITS-35] = 1;
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// fmt smaller than 37 used, bit37 = 1
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arr[BITS-38] = 1;
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memcpy(out, arr, BITS);
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break;
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default:break;
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}
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}
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// static void getParity34(uint32_t *hi, uint32_t *lo){
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// uint32_t result = 0;
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// int i;
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// // even parity
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// for (i = 7;i >= 0;i--)
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// result ^= (*hi >> i) & i;
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// for (i = 31;i >= 24;i--)
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// result ^= (*lo >> i) & 1;
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// *hi |= result << 2;
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// // odd parity bit
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// result = 0;
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// for (i = 23;i >= 1;i--)
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// result ^= (*lo >> i) & 1;
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// *lo |= !result;
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// }
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// static void getParity37H(uint32_t *hi, uint32_t *lo){
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// uint32_t result = 0;
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// int i;
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// // even parity
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// for (i = 4;i >= 0;i--)
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// result ^= (*hi >> i) & 1;
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// for (i = 31;i >= 20;i--)
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// result ^= (*lo >> i) & 1;
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// *hi |= result << 4;
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// // odd parity
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// result = 0;
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// for (i = 19;i >= 1;i--)
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// result ^= (*lo >> i) & 1;
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// *lo |= result;
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// }
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//static void calc26(uint16_t fc, uint32_t cardno, uint8_t *out){
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static void calc26(uint16_t fc, uint32_t cardno, uint8_t *out){
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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(cardno, 16, wiegand+8);
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wiegand_add_parity(out, wiegand, sizeof(wiegand) );
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}
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// static void calc33(uint16_t fc, uint32_t cardno, uint8_t *out){
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// }
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static void calc34(uint16_t fc, uint32_t cardno, uint8_t *out){
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uint8_t wiegand[32];
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num_to_bytebits(fc, 16, wiegand);
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num_to_bytebits(cardno, 16, wiegand + 16);
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wiegand_add_parity(out, wiegand, sizeof(wiegand) );
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}
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// static void calc35(uint16_t fc, uint32_t cardno, uint8_t *out){
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// *lo = ((cardno & 0xFFFFF) << 1) | fc << 21;
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// *hi = (1 << 5) | ((fc >> 11) & 1);
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// }
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static void calc37S(uint16_t fc, uint32_t cardno, uint8_t *out){
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// FC 2 - 17 - 16 bit
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// cardno 18 - 36 - 19 bit
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// Even P1 1 - 19
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// Odd P37 19 - 36
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uint8_t wiegand[35];
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num_to_bytebits(fc, 16, wiegand);
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num_to_bytebits(cardno, 19, wiegand + 16);
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wiegand_add_parity(out, wiegand, sizeof(wiegand) );
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}
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static void calc37H(uint64_t cardno, uint8_t *out){
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// SC NONE
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// cardno 1-35 34 bits
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// Even Parity 0th bit 1-18
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// Odd Parity 36th bit 19-35
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uint8_t wiegand[37];
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num_to_bytebits( (uint32_t)(cardno >> 32), 2, wiegand);
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num_to_bytebits( (uint32_t)(cardno >> 0), 32, wiegand + 2);
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wiegand_add_parity(out, wiegand, sizeof(wiegand) );
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printf("%x %x\n", (uint32_t)(cardno >> 32), (uint32_t)cardno );
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}
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// static void calc40(uint64_t cardno, uint8_t *out){
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// cardno = (cardno & 0xFFFFFFFFFF);
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// *lo = ((cardno & 0xFFFFFFFF) << 1 );
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// *hi = (cardno >> 31);
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// }
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void calcWiegand(uint8_t fmtlen, uint16_t fc, uint64_t cardno, uint8_t *bits){
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uint32_t cn32 = (cardno & 0xFFFFFFFF);
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switch ( fmtlen ) {
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case 26: calc26(fc, cn32, bits); break;
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// case 33 : calc33(fc, cn32, bits); break;
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case 34: calc34(fc, cn32, bits); break;
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// case 35 : calc35(fc, cn32, bits); break;
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case 37: calc37S(fc, cn32, bits); break;
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case 38: calc37H(cardno, bits); break;
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// case 40 : calc40(cardno, bits); break;
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// case 44 : { break; }
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// case 84 : { break; }
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default: break;
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}
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}
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int CmdHIDWiegand(const char *Cmd) {
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uint32_t oem = 0, fc = 0;
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uint64_t cardnum = 0;
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uint64_t blocks = 0, wiegand = 0;
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uint8_t bits[BITS];
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uint8_t *bs = bits;
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memset(bs, 0, sizeof(bits));
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uint8_t ctmp = param_getchar(Cmd, 0);
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if ( strlen(Cmd) == 0 || strlen(Cmd) < 3 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_hid_wiegand();
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oem = param_get8(Cmd, 0);
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fc = param_get32ex(Cmd, 1, 0, 10);
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cardnum = param_get64ex(Cmd, 2, 0, 10);
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uint8_t fmtlen[] = {26,33,34,35,37,38,40};
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PrintAndLog("HID | OEM | FC | CN | Wiegand | HID Formatted");
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PrintAndLog("----+-----+------+---------+-----------+--------------------");
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for (uint8_t i = 0; i < sizeof(fmtlen); i++){
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memset(bits, 0x00, sizeof(bits));
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calcWiegand( fmtlen[i], fc, cardnum, bs);
|
|
printf("ice:: %s \n", sprint_bin(bs, fmtlen[i]));
|
|
wiegand = (uint64_t)bytebits_to_byte(bs, 32) << 32 | bytebits_to_byte(bs+32, 32);
|
|
|
|
addHIDMarker(fmtlen[i], bs);
|
|
printf("ice:: %s\n", sprint_bin(bs, BITS));
|
|
blocks = (uint64_t)bytebits_to_byte(bs+32, 32) << 32 | bytebits_to_byte(bs+64, 32);
|
|
uint8_t shifts = 64-fmtlen[i];
|
|
wiegand >>= shifts;
|
|
|
|
PrintAndLog(" %u | %03u | %03u | %" PRIu64 " | %" PRIX64 " | %" PRIX64 ,
|
|
fmtlen[i],
|
|
oem,
|
|
fc,
|
|
cardnum,
|
|
wiegand,
|
|
blocks
|
|
);
|
|
}
|
|
PrintAndLog("----+-----+-----+-------+-----------+--------------------");
|
|
return 0;
|
|
}
|
|
|
|
int CmdHIDBrute(const char *Cmd){
|
|
|
|
bool errors = false, verbose = false;
|
|
uint32_t fc = 0, cn = 0, delay = 1000;
|
|
uint8_t fmtlen = 0;
|
|
uint8_t bits[96];
|
|
memset(bits, 0, sizeof(bits));
|
|
uint8_t cmdp = 0;
|
|
|
|
while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
|
|
switch(param_getchar(Cmd, cmdp)) {
|
|
case 'h':
|
|
case 'H':
|
|
return usage_lf_hid_brute();
|
|
case 'f':
|
|
case 'F':
|
|
fc = param_get32ex(Cmd ,cmdp+1, 0, 10);
|
|
if ( !fc )
|
|
errors = true;
|
|
cmdp += 2;
|
|
break;
|
|
case 'd':
|
|
case 'D':
|
|
// delay between attemps, defaults to 1000ms.
|
|
delay = param_get32ex(Cmd, cmdp+1, 1000, 10);
|
|
cmdp += 2;
|
|
break;
|
|
case 'c':
|
|
case 'C':
|
|
cn = param_get32ex(Cmd, cmdp+1, 0, 10);
|
|
// truncate cardnumber.
|
|
cn &= 0xFFFF;
|
|
cmdp += 2;
|
|
break;
|
|
case 'a':
|
|
case 'A':
|
|
fmtlen = param_get8(Cmd, cmdp+1);
|
|
cmdp += 2;
|
|
bool is_ftm_ok = false;
|
|
uint8_t ftms[] = {26, 33, 34, 35, 37};
|
|
for ( uint8_t i = 0; i < sizeof(ftms); i++){
|
|
if ( ftms[i] == fmtlen ) {
|
|
is_ftm_ok = true;
|
|
}
|
|
}
|
|
// negated
|
|
errors = !is_ftm_ok;
|
|
break;
|
|
case 'v':
|
|
case 'V':
|
|
verbose = true;
|
|
cmdp++;
|
|
break;
|
|
default:
|
|
PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
|
|
errors = true;
|
|
break;
|
|
}
|
|
}
|
|
if ( fc == 0 ) errors = true;
|
|
if ( errors ) return usage_lf_hid_brute();
|
|
|
|
PrintAndLog("Brute-forcing HID reader");
|
|
PrintAndLog("Press pm3-button to abort simulation or run another command");
|
|
|
|
uint16_t up = cn;
|
|
uint16_t down = cn;
|
|
|
|
// main loop
|
|
for (;;){
|
|
|
|
if ( offline ) {
|
|
printf("Device offline\n");
|
|
return 2;
|
|
}
|
|
|
|
if (ukbhit()) {
|
|
int gc = getchar(); (void)gc;
|
|
PrintAndLog("aborted via keyboard!");
|
|
return sendPing();
|
|
}
|
|
|
|
// Do one up
|
|
if ( up < 0xFFFF )
|
|
if ( !sendTry(fmtlen, fc, up++, delay, bits, verbose)) return 1;
|
|
|
|
// Do one down (if cardnumber is given)
|
|
if ( cn > 1 )
|
|
if ( down > 1 )
|
|
if ( !sendTry(fmtlen, fc, --down, delay, bits, verbose)) return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static command_t CommandTable[] = {
|
|
{"help", CmdHelp, 1, "this help"},
|
|
{"demod", CmdHIDDemod, 0, "demodulate HID Prox tag from the GraphBuffer"},
|
|
{"read", CmdHIDRead, 0, "attempt to read and extract tag data"},
|
|
{"clone", CmdHIDClone, 0, "clone HID to T55x7"},
|
|
{"sim", CmdHIDSim, 0, "simulate HID tag"},
|
|
{"wiegand", CmdHIDWiegand, 1, "convert facility code/card number to Wiegand code"},
|
|
{"brute", CmdHIDBrute, 0, "bruteforce card number against reader"},
|
|
{NULL, NULL, 0, NULL}
|
|
};
|
|
|
|
int CmdLFHID(const char *Cmd) {
|
|
clearCommandBuffer();
|
|
CmdsParse(CommandTable, Cmd);
|
|
return 0;
|
|
}
|
|
|
|
int CmdHelp(const char *Cmd) {
|
|
CmdsHelp(CommandTable);
|
|
return 0;
|
|
}
|