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https://github.com/RfidResearchGroup/proxmark3.git
synced 2025-08-21 05:43:48 -07:00
initial implementation of em4x50 standalone mode
This commit is contained in:
tharexde
parent
ac0ef23d5e
commit
9a96157e82
4 changed files with 49 additions and 55 deletions
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@ -28,8 +28,8 @@
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*
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* On entering stand-alone mode, this module will start simulating EM4x50 data.
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* Data is read from eml dump file uploaded to flash memory (lf_em4x50_simulate.eml).
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* If reader sends password different from dump file password, 'new' password
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* is saved in file lf_em4x50_passwords.log in flash memory.
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* If reader sends password different from dump file password, it is saved in
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* file lf_em4x50_passwords.log in flash memory.
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*
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* On switching to read/record mode by pressing pm3 button, module will start
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* reading EM4x50 data. Each collected data set will be written/appended to the
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@ -65,7 +65,6 @@
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#define STATE_SIM 0
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#define STATE_READ 1
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#define EM4X50_TAG_WORD 45
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#define LF_EM4X50_INPUTFILE_SIM "lf_em4x50_simulate.eml"
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#define LF_EM4X50_LOGFILE_SIM "lf_em4x50_passwords.log"
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#define LF_EM4X50_LOGFILE_COLLECT "lf_em4x50_collect.log"
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@ -75,25 +74,24 @@ uint32_t gPassword;
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static void LoadDataInstructions(const char *inputfile) {
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Dbprintf("");
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Dbprintf("To load datafile to flash and display it:");
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Dbprintf(_YELLOW_("1.") " edit input file %s", inputfile);
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Dbprintf(_YELLOW_("2.") " start proxmark3 client");
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Dbprintf(_YELLOW_("3.") " mem spiffs load f <filename> o %s", inputfile);
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Dbprintf(_YELLOW_("4.") " start standalone mode");
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Dbprintf("1. edit input file %s", inputfile);
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Dbprintf("2. start proxmark3 client");
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Dbprintf("3. mem spiffs load f <filename> o %s", inputfile);
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Dbprintf("4. start standalone mode");
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}
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static void DownloadLogInstructions(const char *logfile) {
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Dbprintf("");
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Dbprintf("To get the logfile from flash and display it:");
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Dbprintf(_YELLOW_("1.") " mem spiffs dump o %s f <filename>", logfile);
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Dbprintf(_YELLOW_("2.") " exit proxmark3 client");
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Dbprintf(_YELLOW_("3.") " cat <filename>");
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Dbprintf("1. mem spiffs dump o %s f <filename>", logfile);
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Dbprintf("2. exit proxmark3 client");
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Dbprintf("3. cat <filename>");
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}
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static bool get_input_data_from_file(uint32_t *tag, char *inputfile) {
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size_t now = 0;
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#ifdef WITH_FLASH
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if (exists_in_spiffs(inputfile)) {
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uint32_t size = size_in_spiffs(inputfile);
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@ -111,23 +109,21 @@ static bool get_input_data_from_file(uint32_t *tag, char *inputfile) {
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}
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Dbprintf(_YELLOW_("read tag data from input file"));
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} else {
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Dbprintf(_RED_("no input file %s"), inputfile);
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}
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BigBuf_free();
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#endif
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return ((now == EM4X50_NO_WORDS) && (tag[EM4X50_DEVICE_SERIAL] != tag[EM4X50_DEVICE_ID]));
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}
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static void append(const char *filename, uint8_t *entry, size_t entry_len) {
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#ifdef WITH_FLASH
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if (exists_in_spiffs(filename)) {
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rdv40_spiffs_append(filename, entry, entry_len, RDV40_SPIFFS_SAFETY_SAFE);
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} else {
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rdv40_spiffs_write(filename, entry, entry_len, RDV40_SPIFFS_SAFETY_SAFE);
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}
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#endif
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}
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void ModInfo(void) {
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@ -141,9 +137,7 @@ void RunMod(void) {
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uint8_t entry[400], state = STATE_SIM;
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uint32_t tag[EM4X50_NO_WORDS] = {0x0};
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#ifdef WITH_FLASH
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rdv40_spiffs_lazy_mount();
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#endif
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StandAloneMode();
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Dbprintf(_YELLOW_("Standalone mode THAREXDE started"));
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@ -191,6 +185,7 @@ void RunMod(void) {
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Dbprintf(_YELLOW_("tag data ok"));
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} else {
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Dbprintf(_RED_("error in tag data"));
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LoadDataInstructions(LF_EM4X50_INPUTFILE_SIM);
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}
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// init; start with command = standard read mode
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@ -213,7 +208,7 @@ void RunMod(void) {
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em4x50_handle_commands(&command, tag);
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// check if new password was found
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if (gPassword != reflect32(tag[0])) {
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if (gPassword != reflect32(tag[EM4X50_DEVICE_PASSWORD])) {
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Dbprintf("received password: %08"PRIx32"", gPassword);
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@ -222,7 +217,7 @@ void RunMod(void) {
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sprintf((char *)entry, "%08"PRIx32"\n", gPassword);
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append(LF_EM4X50_LOGFILE_SIM, entry, strlen((char *)entry));
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gPassword = reflect32(tag[0]);
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gPassword = reflect32(tag[EM4X50_DEVICE_PASSWORD]);
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}
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// if timeout (e.g. no reader field) continue with standard read
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@ -271,17 +266,15 @@ void RunMod(void) {
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AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG; // reset and re-enable timer
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}
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#ifdef WITH_FLASH
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if (state == STATE_READ) {
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DownloadLogInstructions(LF_EM4X50_LOGFILE_COLLECT);
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} else {
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LoadDataInstructions(LF_EM4X50_INPUTFILE_SIM);
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DownloadLogInstructions(LF_EM4X50_LOGFILE_SIM);
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}
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LED_D_ON();
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rdv40_spiffs_lazy_unmount();
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LED_D_OFF();
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#endif
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FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
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LEDsoff();
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@ -256,7 +256,7 @@ static uint32_t get_pulse_length(void) {
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int32_t timeout = EM4X50_TIMEOUT_PULSE_EVAL, tval = 0;
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// iterates pulse length (low -> high -> low)
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// iterates pulse lengths (low -> high -> low)
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volatile uint8_t sample = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
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@ -267,7 +267,6 @@ static uint32_t get_pulse_length(void) {
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return 0;
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tval = GetTicks();
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//timeout = (T0 * 3 * EM4X50_T_TAG_FULL_PERIOD);
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timeout = EM4X50_TIMEOUT_PULSE_EVAL;
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while (sample < gHigh && (timeout--))
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@ -276,7 +275,6 @@ static uint32_t get_pulse_length(void) {
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if (timeout <= 0)
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return 0;
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//timeout = (T0 * 3 * EM4X50_T_TAG_FULL_PERIOD);
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timeout = EM4X50_TIMEOUT_PULSE_EVAL;
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while (sample > gLow && (timeout--))
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sample = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
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@ -305,7 +303,6 @@ static void em4x50_reader_send_bit(int bit) {
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// disable modulation (activate the field) for 7 cycles of carrier
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// period (Opt64)
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LOW(GPIO_SSC_DOUT);
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//while (AT91C_BASE_TC0->TC_CV < T0 * 7);
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while (GetTicks() - tval < 7 * CYCLES2TICKS);
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// enable modulation (drop the field) for remaining first
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@ -1245,7 +1242,6 @@ static int em4x50_sim_read_bit(void) {
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if (timeout <= 0) {
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return PM3_ETIMEOUT;
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}
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//timeout = EM4X50_T_SIMULATION_TIMEOUT_READ;
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// now we have a reference "position", from here it will take
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// slightly less than 32 cycles until the end of the bit period
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@ -1782,7 +1778,7 @@ void em4x50_handle_commands(int *command, uint32_t *tag) {
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// LED D -> operations that require authentication are possible
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void em4x50_sim(uint32_t *password) {
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int command = 0;
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int command = PM3_ENODATA;
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uint8_t *em4x50_mem = BigBuf_get_EM_addr();
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uint32_t tag[EM4X50_NO_WORDS] = {0x0};
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@ -920,14 +920,14 @@ bool GetIso14443aCommandFromReader(uint8_t *received, uint8_t *par, int *len) {
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uint16_t checker = 0;
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for (;;) {
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WDT_HIT();
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if (flip == 2) {
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if (flip == 3) {
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if (data_available())
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return false;
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flip = 0;
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}
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if (checker >= 4000) {
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if (checker >= 3000) {
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if (BUTTON_PRESS())
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return false;
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@ -327,15 +327,19 @@ static int CmdHF14AJookiSim(const char *Cmd) {
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jooki_print(b64, result, false);
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// copy UID from base64 url parameter
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uint8_t uid[7] = {0};
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memcpy(uid, result + 5, 7);
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// hf mfu sim...
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uint8_t *data = calloc(144, sizeof(uint8_t));
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// copy UID from base64 url parameter
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memcpy(data, result + 5, 3);
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memcpy(data, uid, 3);
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memcpy(data + (1*4), uid + 3, 4);
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// bbc0
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data[3] = 0x88 ^ data[0] ^ data[1] ^ data[2];
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memcpy(data + (1*4), result + 8, 4);
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// bbc1
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data[8] = data[4] ^ data[5] ^ data[6] ^ data[7];
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@ -398,8 +402,9 @@ static int CmdHF14AJookiSim(const char *Cmd) {
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// NTAG, 7 byte UID in eloaded data.
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payload.tagtype = 7;
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payload.flags = FLAG_7B_UID_IN_DATA;
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payload.flags = FLAG_UID_IN_EMUL;
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payload.exitAfter = 0;
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memcpy(payload.uid, uid, sizeof(uid));
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clearCommandBuffer();
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SendCommandNG(CMD_HF_ISO14443A_SIMULATE, (uint8_t *)&payload, sizeof(payload));
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