// if anticollision is false, then the UID must be provided in uid_ptr[]
// and num_cascades must be set (1: 4 Byte UID, 2: 7 Byte UID, 3: 10 Byte UID)
int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, uint32_t *cuid_ptr, bool anticollision, uint8_t num_cascades) {
- uint8_t wupa[] = { 0x52 }; // 0x26 - REQA 0x52 - WAKE-UP
- uint8_t sel_all[] = { 0x93,0x20 };
- uint8_t sel_uid[] = { 0x93,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
- uint8_t rats[] = { 0xE0,0x80,0x00,0x00 }; // FSD=256, FSDI=8, CID=0
+ uint8_t wupa[] = { ISO14443A_CMD_WUPA }; // 0x26 - ISO14443A_CMD_REQA 0x52 - ISO14443A_CMD_WUPA
+ uint8_t sel_all[] = { ISO14443A_CMD_ANTICOLL_OR_SELECT,0x20 };
+ uint8_t sel_uid[] = { ISO14443A_CMD_ANTICOLL_OR_SELECT,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+ uint8_t rats[] = { ISO14443A_CMD_RATS,0x80,0x00,0x00 }; // FSD=256, FSDI=8, CID=0
uint8_t resp[MAX_FRAME_SIZE] = {0}; // theoretically. A usual RATS will be much smaller
uint8_t resp_par[MAX_PARITY_SIZE] = {0};
byte_t uid_resp[4] = {0};
}
void iso14443a_setup(uint8_t fpga_minor_mode) {
+
FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
// Set up the synchronous serial port
FpgaSetupSsc();
// connect Demodulated Signal to ADC:
SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | fpga_minor_mode);
-
LED_D_OFF();
// Signal field is on with the appropriate LED
if (fpga_minor_mode == FPGA_HF_ISO14443A_READER_MOD ||
fpga_minor_mode == FPGA_HF_ISO14443A_READER_LISTEN)
LED_D_ON();
- // Prepare the demodulation functions
- DemodReset();
- UartReset();
-
- iso14a_set_timeout(10*106); // 10ms default
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | fpga_minor_mode);
- //NextTransferTime = 2 * DELAY_ARM2AIR_AS_READER;
- NextTransferTime = DELAY_ARM2AIR_AS_READER << 1;
+ SpinDelay(20);
// Start the timer
StartCountSspClk();
+
+ // Prepare the demodulation functions
+ DemodReset();
+ UartReset();
+ NextTransferTime = 2 * DELAY_ARM2AIR_AS_READER;
+ iso14a_set_timeout(10*106); // 20ms default
}
int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data) {
return len;
}
+
//-----------------------------------------------------------------------------
// Read an ISO 14443a tag. Send out commands and store answers.
-//
//-----------------------------------------------------------------------------
void ReaderIso14443a(UsbCommand *c) {
iso14a_command_t param = c->arg[0];
uint32_t nttmp1 = nt1;
uint32_t nttmp2 = nt2;
- for (uint16_t i = 1; i < 0xFFFF; ++i) {
+ // 0xFFFF -- Half up and half down to find distance between nonces
+ for (uint16_t i = 1; i < 32768/8; i += 8) {
nttmp1 = prng_successor(nttmp1, 1); if (nttmp1 == nt2) return i;
+ nttmp1 = prng_successor(nttmp1, 1); if (nttmp1 == nt2) return i+1;
+ nttmp1 = prng_successor(nttmp1, 1); if (nttmp1 == nt2) return i+2;
+ nttmp1 = prng_successor(nttmp1, 1); if (nttmp1 == nt2) return i+3;
+ nttmp1 = prng_successor(nttmp1, 1); if (nttmp1 == nt2) return i+4;
+ nttmp1 = prng_successor(nttmp1, 1); if (nttmp1 == nt2) return i+5;
+ nttmp1 = prng_successor(nttmp1, 1); if (nttmp1 == nt2) return i+6;
+ nttmp1 = prng_successor(nttmp1, 1); if (nttmp1 == nt2) return i+7;
+
nttmp2 = prng_successor(nttmp2, 1); if (nttmp2 == nt1) return -i;
- }
+ nttmp2 = prng_successor(nttmp2, 1); if (nttmp2 == nt1) return -(i+1);
+ nttmp2 = prng_successor(nttmp2, 1); if (nttmp2 == nt1) return -(i+2);
+ nttmp2 = prng_successor(nttmp2, 1); if (nttmp2 == nt1) return -(i+3);
+ nttmp2 = prng_successor(nttmp2, 1); if (nttmp2 == nt1) return -(i+4);
+ nttmp2 = prng_successor(nttmp2, 1); if (nttmp2 == nt1) return -(i+5);
+ nttmp2 = prng_successor(nttmp2, 1); if (nttmp2 == nt1) return -(i+6);
+ nttmp2 = prng_successor(nttmp2, 1); if (nttmp2 == nt1) return -(i+7);
+ }
// either nt1 or nt2 are invalid nonces
return(-99999);
}
iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
sync_time = GetCountSspClk() & 0xfffffff8;
- // iceman, i add 1130 because during my observations this makse the syncronization much fast to sync.
- sync_cycles = PRNG_SEQUENCE_LENGTH + 1130; //65536; // Mifare Classic's random generator repeats every 2^16 cycles (and so do the nonces).
+ sync_cycles = PRNG_SEQUENCE_LENGTH; // Mifare Classic's random generator repeats every 2^16 cycles (and so do the nonces).
nt_attacked = 0;
if (MF_DBGLEVEL >= 4) Dbprintf("Mifare::Sync %08x", sync_time);
// we didn't calibrate our clock yet,
// iceman: has to be calibrated every time.
- if (first_try && previous_nt && !nt_attacked) {
+ if (previous_nt && !nt_attacked) {
nt_distance = dist_nt(previous_nt, nt);
}
LED_B_OFF();
- if ((nt != nt_attacked) && nt_attacked) { // we somehow lost sync. Try to catch up again...
+ if ( (nt != nt_attacked) && nt_attacked) { // we somehow lost sync. Try to catch up again...
catch_up_cycles = ABS(dist_nt(nt_attacked, nt));
if (catch_up_cycles == 99999) { // invalid nonce received. Don't resync on that one.
// Here, we collect CUID, NT, NR, AR, CUID2, NT2, NR2, AR2
// This can be used in a reader-only attack.
- uint32_t ar_nr_responses[] = {0,0,0,0,0,0,0,0,0};
- uint8_t ar_nr_collected = 0;
+ nonces_t ar_nr_resp[ATTACK_KEY_COUNT*2]; // for 2 separate attack types (nml, moebius)
+ memset(ar_nr_resp, 0x00, sizeof(ar_nr_resp));
+
+ uint8_t ar_nr_collected[ATTACK_KEY_COUNT*2]; // for 2nd attack type (moebius)
+ memset(ar_nr_collected, 0x00, sizeof(ar_nr_collected));
+ uint8_t nonce1_count = 0;
+ uint8_t nonce2_count = 0;
+ uint8_t moebius_n_count = 0;
+ bool gettingMoebius = false;
+ uint8_t mM = 0; // moebius_modifier for collection storage
+ bool doBufResetNext = false;
// Authenticate response - nonce
uint32_t nonce = bytes_to_num(rAUTH_NT, 4);
- ar_nr_responses[1] = nonce;
// -- Determine the UID
// Can be set from emulator memory or incoming data
case 4:
sak_4[0] &= 0xFB;
// save CUID
- ar_nr_responses[0] = cuid = bytes_to_num(rUIDBCC1, 4);
+ cuid = bytes_to_num(rUIDBCC1, 4);
// BCC
rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];
if (MF_DBGLEVEL >= 2) {
atqa[0] |= 0x40;
sak_7[0] &= 0xFB;
// save CUID
- ar_nr_responses[0] = cuid = bytes_to_num(rUIDBCC2, 4);
+ cuid = bytes_to_num(rUIDBCC2, 4);
// CascadeTag, CT
rUIDBCC1[0] = 0x88;
// BCC
atqa[0] |= 0x80;
sak_10[0] &= 0xFB;
// save CUID
- ar_nr_responses[0] = cuid = bytes_to_num(rUIDBCC3, 4);
+ cuid = bytes_to_num(rUIDBCC3, 4);
// CascadeTag, CT
rUIDBCC1[0] = 0x88;
rUIDBCC2[0] = 0x88;
uint32_t nr = bytes_to_num(receivedCmd, 4);
uint32_t ar = bytes_to_num(&receivedCmd[4], 4);
+ if (doBufResetNext) {
+ // Reset, lets try again!
+ Dbprintf("Re-read after previous NR_AR_ATTACK, resetting buffer");
+ memset(ar_nr_resp, 0x00, sizeof(ar_nr_resp));
+ memset(ar_nr_collected, 0x00, sizeof(ar_nr_collected));
+ mM = 0;
+ doBufResetNext = false;
+ }
+
+ for (uint8_t i = 0; i < ATTACK_KEY_COUNT; i++) {
+ if ( ar_nr_collected[i+mM]==0 || ((cardAUTHSC == ar_nr_resp[i+mM].sector) && (cardAUTHKEY == ar_nr_resp[i+mM].keytype) && (ar_nr_collected[i+mM] > 0)) ) {
+
+ // if first auth for sector, or matches sector and keytype of previous auth
+ if (ar_nr_collected[i+mM] < 2) {
+ // if we haven't already collected 2 nonces for this sector
+ if (ar_nr_resp[ar_nr_collected[i+mM]].ar != ar) {
+ // Avoid duplicates... probably not necessary, ar should vary.
+ if (ar_nr_collected[i+mM]==0) {
+ // first nonce collect
+ ar_nr_resp[i+mM].cuid = cuid;
+ ar_nr_resp[i+mM].sector = cardAUTHSC;
+ ar_nr_resp[i+mM].keytype = cardAUTHKEY;
+ ar_nr_resp[i+mM].nonce = nonce;
+ ar_nr_resp[i+mM].nr = nr;
+ ar_nr_resp[i+mM].ar = ar;
+ nonce1_count++;
+ // add this nonce to first moebius nonce
+ ar_nr_resp[i+ATTACK_KEY_COUNT].cuid = cuid;
+ ar_nr_resp[i+ATTACK_KEY_COUNT].sector = cardAUTHSC;
+ ar_nr_resp[i+ATTACK_KEY_COUNT].keytype = cardAUTHKEY;
+ ar_nr_resp[i+ATTACK_KEY_COUNT].nonce = nonce;
+ ar_nr_resp[i+ATTACK_KEY_COUNT].nr = nr;
+ ar_nr_resp[i+ATTACK_KEY_COUNT].ar = ar;
+ ar_nr_collected[i+ATTACK_KEY_COUNT]++;
+ } else { // second nonce collect (std and moebius)
+ ar_nr_resp[i+mM].nonce2 = nonce;
+ ar_nr_resp[i+mM].nr2 = nr;
+ ar_nr_resp[i+mM].ar2 = ar;
+ if (!gettingMoebius) {
+ nonce2_count++;
+ // check if this was the last second nonce we need for std attack
+ if ( nonce2_count == nonce1_count ) {
+ // done collecting std test switch to moebius
+ // first finish incrementing last sample
+ ar_nr_collected[i+mM]++;
+ // switch to moebius collection
+ gettingMoebius = true;
+ mM = ATTACK_KEY_COUNT;
+ break;
+ }
+ } else {
+ moebius_n_count++;
+ // if we've collected all the nonces we need - finish.
+
+ if (nonce1_count == moebius_n_count) {
+ cmd_send(CMD_ACK,CMD_SIMULATE_MIFARE_CARD,0,0,&ar_nr_resp,sizeof(ar_nr_resp));
+ nonce1_count = 0;
+ nonce2_count = 0;
+ moebius_n_count = 0;
+ gettingMoebius = false;
+ doBufResetNext = true;
+ finished = ( ((flags & FLAG_INTERACTIVE) == FLAG_INTERACTIVE));
+ }
+ }
+ }
+ ar_nr_collected[i+mM]++;
+ }
+ }
+ // we found right spot for this nonce stop looking
+ break;
+ }
+ }
+
+
+ /*
// Collect AR/NR
// if(ar_nr_collected < 2 && cardAUTHSC == 2){
if(ar_nr_collected < 2) {
// Interactive mode flag, means we need to send ACK
finished = ( ((flags & FLAG_INTERACTIVE) == FLAG_INTERACTIVE)&& ar_nr_collected == 2);
}
- /*
+
crypto1_word(pcs, ar , 1);
cardRr = nr ^ crypto1_word(pcs, 0, 0);
}
// Interactive mode flag, means we need to send ACK
+ /*
if((flags & FLAG_INTERACTIVE) == FLAG_INTERACTIVE) {
// May just aswell send the collected ar_nr in the response aswell
uint8_t len = ar_nr_collected * 4 * 4;
cmd_send(CMD_ACK, CMD_SIMULATE_MIFARE_CARD, len, 0, &ar_nr_responses, len);
}
-
+
+ */
if( ((flags & FLAG_NR_AR_ATTACK) == FLAG_NR_AR_ATTACK ) && MF_DBGLEVEL >= 1 ) {
- if(ar_nr_collected > 1 ) {
- Dbprintf("Collected two pairs of AR/NR which can be used to extract keys from reader:");
- Dbprintf("../tools/mfkey/mfkey32v2.exe %08x %08x %08x %08x %08x %08x %08x",
- ar_nr_responses[0], // CUID
- ar_nr_responses[1], // NT1
- ar_nr_responses[2], // NR1
- ar_nr_responses[3], // AR1
- // ar_nr_responses[4], // CUID2
- ar_nr_responses[5], // NT2
- ar_nr_responses[6], // NR2
- ar_nr_responses[7] // AR2
- );
- } else {
- Dbprintf("Failed to obtain two AR/NR pairs!");
- if(ar_nr_collected == 1 ) {
- Dbprintf("Only got these: UID=%08x, nonce=%08x, NR1=%08x, AR1=%08x",
- ar_nr_responses[0], // CUID
- ar_nr_responses[1], // NT
- ar_nr_responses[2], // NR1
- ar_nr_responses[3] // AR1
- );
+ for ( uint8_t i = 0; i < ATTACK_KEY_COUNT; i++) {
+ if (ar_nr_collected[i] == 2) {
+ Dbprintf("Collected two pairs of AR/NR which can be used to extract %s from reader for sector %d:", (i<ATTACK_KEY_COUNT/2) ? "keyA" : "keyB", ar_nr_resp[i].sector);
+ Dbprintf("../tools/mfkey/mfkey32 %08x %08x %08x %08x %08x %08x",
+ ar_nr_resp[i].cuid, //UID
+ ar_nr_resp[i].nonce, //NT
+ ar_nr_resp[i].nr, //NR1
+ ar_nr_resp[i].ar, //AR1
+ ar_nr_resp[i].nr2, //NR2
+ ar_nr_resp[i].ar2 //AR2
+ );
+ }
+ }
+ for ( uint8_t i = ATTACK_KEY_COUNT; i < ATTACK_KEY_COUNT*2; i++) {
+ if (ar_nr_collected[i] == 2) {
+ Dbprintf("Collected two pairs of AR/NR which can be used to extract %s from reader for sector %d:", (i<ATTACK_KEY_COUNT/2) ? "keyA" : "keyB", ar_nr_resp[i].sector);
+ Dbprintf("../tools/mfkey/mfkey32v2 %08x %08x %08x %08x %08x %08x %08x",
+ ar_nr_resp[i].cuid, //UID
+ ar_nr_resp[i].nonce, //NT
+ ar_nr_resp[i].nr, //NR1
+ ar_nr_resp[i].ar, //AR1
+ ar_nr_resp[i].nonce2,//NT2
+ ar_nr_resp[i].nr2, //NR2
+ ar_nr_resp[i].ar2 //AR2
+ );
}
}
}
+
+
if (MF_DBGLEVEL >= 1) Dbprintf("Emulator stopped. Tracing: %d trace length: %d ", tracing, BigBuf_get_traceLen());
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
projects / proxmark3-svn / blobdiff