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merlokk
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73f62ae27e
6 changed files with 403 additions and 239 deletions
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@ -6,7 +6,7 @@
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*
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* Author: proxmark@ss23.geek.nz - ss23
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* Based on lf_hidbrute
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*
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*
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* To retrieve log file from flash:
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*
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* 1. mem spiffs dump -s lf_hid_fcbrute.log -d lf_hid_fcbrute.log
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@ -44,125 +44,125 @@
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#define LF_HIDCOLLECT_LOGFILE "lf_hid_fcbrute.log"
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static void append(uint8_t *entry, size_t entry_len) {
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LED_B_ON();
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DbpString("Writing... ");
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DbpString((char *)entry);
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rdv40_spiffs_append(LF_HIDCOLLECT_LOGFILE, entry, entry_len, RDV40_SPIFFS_SAFETY_SAFE);
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LED_B_OFF();
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LED_B_ON();
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DbpString("Writing... ");
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DbpString((char *)entry);
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rdv40_spiffs_append(LF_HIDCOLLECT_LOGFILE, entry, entry_len, RDV40_SPIFFS_SAFETY_SAFE);
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LED_B_OFF();
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}
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void ModInfo(void) {
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DbpString(_YELLOW_(" LF - HID facility code bruteforce - (ss23)"));
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DbpString(_YELLOW_(" LF - HID facility code bruteforce - (ss23)"));
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}
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void RunMod(void) {
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FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
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LFSetupFPGAForADC(LF_DIVISOR_125, true);
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BigBuf_Clear();
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StandAloneMode();
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WDT_HIT();
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FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
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LFSetupFPGAForADC(LF_DIVISOR_125, true);
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BigBuf_Clear();
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StandAloneMode();
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WDT_HIT();
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LEDsoff();
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LED_A_ON();
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LED_B_ON();
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LED_C_ON();
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LEDsoff();
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LED_A_ON();
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LED_B_ON();
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LED_C_ON();
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rdv40_spiffs_lazy_mount();
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// Buffer for writing to log
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uint8_t entry[81];
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memset(entry, 0, sizeof(entry));
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sprintf((char *)entry, "%s\n", "HID FC brute start");
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rdv40_spiffs_lazy_mount();
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// Buffer for writing to log
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uint8_t entry[81];
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memset(entry, 0, sizeof(entry));
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sprintf((char *)entry, "%s\n", "HID FC brute start");
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// Create the log file
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if (exists_in_spiffs(LF_HIDCOLLECT_LOGFILE)) {
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rdv40_spiffs_append(LF_HIDCOLLECT_LOGFILE, entry, strlen((char *)entry), RDV40_SPIFFS_SAFETY_SAFE);
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} else {
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rdv40_spiffs_write(LF_HIDCOLLECT_LOGFILE, entry, strlen((char *)entry), RDV40_SPIFFS_SAFETY_SAFE);
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}
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LED_B_OFF();
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// Create the log file
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if (exists_in_spiffs(LF_HIDCOLLECT_LOGFILE)) {
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rdv40_spiffs_append(LF_HIDCOLLECT_LOGFILE, entry, strlen((char *)entry), RDV40_SPIFFS_SAFETY_SAFE);
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} else {
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rdv40_spiffs_write(LF_HIDCOLLECT_LOGFILE, entry, strlen((char *)entry), RDV40_SPIFFS_SAFETY_SAFE);
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}
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LED_B_OFF();
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Dbprintf("Waiting to begin bruteforce");
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Dbprintf("Waiting to begin bruteforce");
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// Wait until the user presses the button to begin the bruteforce
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for (;;) {
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// Hit the watchdog timer regularly
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WDT_HIT();
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int button_pressed = BUTTON_HELD(10);
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if ((button_pressed == BUTTON_HOLD) || (button_pressed == BUTTON_SINGLE_CLICK)) {
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break;
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}
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}
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// Wait until the user presses the button to begin the bruteforce
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for (;;) {
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// Hit the watchdog timer regularly
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WDT_HIT();
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int button_pressed = BUTTON_HELD(10);
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if ((button_pressed == BUTTON_HOLD) || (button_pressed == BUTTON_SINGLE_CLICK)) {
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break;
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}
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}
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Dbprintf("Running Bruteforce");
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Dbprintf("Running Bruteforce");
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LEDsoff();
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LED_A_ON();
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LEDsoff();
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LED_A_ON();
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// Buffer for HID data
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uint32_t high, low;
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// Buffer for HID data
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uint32_t high, low;
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for (uint32_t fc = 0; fc < 256; fc++) {
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// Hit the watchdog timer regularly
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WDT_HIT();
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for (uint32_t fc = 0; fc < 256; fc++) {
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// Hit the watchdog timer regularly
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WDT_HIT();
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LEDsoff();
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LEDsoff();
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// Toggle LED_C
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if ((fc % 2) == 1) {
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LED_C_ON();
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}
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// Toggle LED_C
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if ((fc % 2) == 1) {
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LED_C_ON();
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}
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// If we get USB data, break out
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if (data_available()) break;
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// If we get USB data, break out
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if (data_available()) break;
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// If a user attempts to hold button, abort the run
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/*
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int button_pressed = BUTTON_HELD(1000); // 1 second
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if (button_pressed == BUTTON_HOLD) {
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break;
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}
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*/
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// If a user pressed the button once, briefly, output the current FC to the log file
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if (BUTTON_PRESS()) {
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memset(entry, 0, sizeof(entry));
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// If a user attempts to hold button, abort the run
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/*
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int button_pressed = BUTTON_HELD(1000); // 1 second
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if (button_pressed == BUTTON_HOLD) {
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break;
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}
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*/
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// If a user pressed the button once, briefly, output the current FC to the log file
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if (BUTTON_PRESS()) {
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memset(entry, 0, sizeof(entry));
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sprintf((char *)entry, "FC: %li\n", fc);
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append(entry, strlen((char *)entry));
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}
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sprintf((char *)entry, "FC: %li\n", fc);
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append(entry, strlen((char *)entry));
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}
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// Calculate data required for a HID card
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hid_calculate_checksum_and_set(&high, &low, 1, fc);
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// Calculate data required for a HID card
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hid_calculate_checksum_and_set(&high, &low, 1, fc);
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// Print actual code to brute
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Dbprintf("[=] TAG ID: %x%08x (%d) - FC: %u - Card: %u", high, low, (low >> 1) & 0xFFFF, fc, 1);
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// Print actual code to brute
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Dbprintf("[=] TAG ID: %x%08x (%d) - FC: %u - Card: %u", high, low, (low >> 1) & 0xFFFF, fc, 1);
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LED_A_ON();
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LED_D_ON();
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StartTicks();
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CmdHIDsimTAGEx(0, high, low, 0, 1, 40000);
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LED_D_OFF();
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StartTicks();
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WaitMS(50);
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StopTicks();
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LED_A_OFF();
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}
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LED_A_ON();
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LED_D_ON();
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StartTicks();
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CmdHIDsimTAGEx(0, high, low, 0, 1, 40000);
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LED_D_OFF();
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StartTicks();
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WaitMS(50);
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StopTicks();
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LED_A_OFF();
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}
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LEDsoff();
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LEDsoff();
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}
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void hid_calculate_checksum_and_set(uint32_t *high, uint32_t *low, uint32_t cardnum, uint32_t fc) {
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uint32_t newhigh = 0;
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uint32_t newlow = 0;
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uint32_t newhigh = 0;
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uint32_t newlow = 0;
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newlow = 0;
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newlow |= (cardnum & 0xFFFF) << 1;
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newlow |= (fc & 0xFF) << 17;
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newlow |= oddparity32((newlow >> 1) & 0xFFF);
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newlow |= (evenparity32((newlow >> 13) & 0xFFF)) << 25;
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newlow = 0;
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newlow |= (cardnum & 0xFFFF) << 1;
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newlow |= (fc & 0xFF) << 17;
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newlow |= oddparity32((newlow >> 1) & 0xFFF);
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newlow |= (evenparity32((newlow >> 13) & 0xFFF)) << 25;
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newhigh |= 0x20; // Bit 37; standard header
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newlow |= 1U << 26; // leading 1: start bit
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newhigh |= 0x20; // Bit 37; standard header
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newlow |= 1U << 26; // leading 1: start bit
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*low = newlow;
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*high = newhigh;
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*low = newlow;
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*high = newhigh;
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}
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