git.zerfleddert.de Git - proxmark3-svn/blobdiff

#include "util.h"

#include "string.h"

#include "cmd.h"

#include "util.h"

#include "string.h"

#include "cmd.h"

-

#include "iso14443crc.h"

#include "iso14443a.h"

#include "crapto1.h"

#include "mifareutil.h"

#include "BigBuf.h"

#include "iso14443crc.h"

#include "iso14443a.h"

#include "crapto1.h"

#include "mifareutil.h"

#include "BigBuf.h"

+#include "protocols.h"

+

static uint32_t iso14a_timeout;

int rsamples = 0;

uint8_t trigger = 0;

static uint32_t iso14a_timeout;

int rsamples = 0;

uint8_t trigger = 0;

set_tracing(FALSE);

}

set_tracing(FALSE);

}

+typedef struct {

+ uint32_t cuid;

+ uint8_t sector;

+ uint8_t keytype;

+ uint32_t nonce;

+ uint32_t ar;

+ uint32_t nr;

+ uint32_t nonce2;

+ uint32_t ar2;

+ uint32_t nr2;

+} nonces_t;

+

/**

*MIFARE 1K simulate.

*

*@param flags :

* FLAG_INTERACTIVE - In interactive mode, we are expected to finish the operation with an ACK

/**

*MIFARE 1K simulate.

*

*@param flags :

* FLAG_INTERACTIVE - In interactive mode, we are expected to finish the operation with an ACK

- * 4B_FLAG_UID_IN_DATA - means that there is a 4-byte UID in the data-section, we're expected to use that

- * 7B_FLAG_UID_IN_DATA - means that there is a 7-byte UID in the data-section, we're expected to use that

+ * FLAG_4B_UID_IN_DATA - means that there is a 4-byte UID in the data-section, we're expected to use that

+ * FLAG_7B_UID_IN_DATA - means that there is a 7-byte UID in the data-section, we're expected to use that

+ * FLAG_10B_UID_IN_DATA - use 10-byte UID in the data-section not finished

* FLAG_NR_AR_ATTACK - means we should collect NR_AR responses for bruteforcing later

- *@param exitAfterNReads, exit simulation after n blocks have been read, 0 is inifite

+ * FLAG_RANDOM_NONCE - means we should generate some pseudo-random nonce data (only allows moebius attack)

+ *@param exitAfterNReads, exit simulation after n blocks have been read, 0 is infinite ...

+ * (unless reader attack mode enabled then it runs util it gets enough nonces to recover all keys attmpted)

*/

void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *datain)

{

int cardSTATE = MFEMUL_NOFIELD;

*/

void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *datain)

{

int cardSTATE = MFEMUL_NOFIELD;

- int _7BUID = 0;

+ int _UID_LEN = 0; // 4, 7, 10

int vHf = 0; // in mV

int res;

uint32_t selTimer = 0;

int vHf = 0; // in mV

int res;

uint32_t selTimer = 0;

uint8_t response[MAX_MIFARE_FRAME_SIZE];

uint8_t response_par[MAX_MIFARE_PARITY_SIZE];

uint8_t response[MAX_MIFARE_FRAME_SIZE];

uint8_t response_par[MAX_MIFARE_PARITY_SIZE];

- uint8_t rATQA[] = {0x04, 0x00}; // Mifare classic 1k 4BUID

+ uint8_t rATQA[] = {0x04, 0x00}; // Mifare classic 1k 4BUID

uint8_t rUIDBCC1[] = {0xde, 0xad, 0xbe, 0xaf, 0x62};

uint8_t rUIDBCC2[] = {0xde, 0xad, 0xbe, 0xaf, 0x62}; // !!!

uint8_t rUIDBCC1[] = {0xde, 0xad, 0xbe, 0xaf, 0x62};

uint8_t rUIDBCC2[] = {0xde, 0xad, 0xbe, 0xaf, 0x62}; // !!!

- uint8_t rSAK[] = {0x08, 0xb6, 0xdd};

- uint8_t rSAK1[] = {0x04, 0xda, 0x17};

+ uint8_t rUIDBCC3[] = {0xde, 0xad, 0xbe, 0xaf, 0x62};

+

+ uint8_t rSAKfinal[]= {0x08, 0xb6, 0xdd}; // mifare 1k indicated

+ uint8_t rSAK1[] = {0x04, 0xda, 0x17}; // indicate UID not finished

uint8_t rAUTH_NT[] = {0x01, 0x02, 0x03, 0x04};

uint8_t rAUTH_AT[] = {0x00, 0x00, 0x00, 0x00};

uint8_t rAUTH_NT[] = {0x01, 0x02, 0x03, 0x04};

uint8_t rAUTH_AT[] = {0x00, 0x00, 0x00, 0x00};

- //Here, we collect UID,NT,AR,NR,UID2,NT2,AR2,NR2

- // This can be used in a reader-only attack.

- // (it can also be retrieved via 'hf 14a list', but hey...

- uint32_t ar_nr_responses[] = {0,0,0,0,0,0,0,0};

- uint8_t ar_nr_collected = 0;

+ //Here, we collect UID,sector,keytype,NT,AR,NR,NT2,AR2,NR2

+ // This will be used in the reader-only attack.

+

+ //allow collecting up to 8 sets of nonces to allow recovery of up to 8 keys

+ #define ATTACK_KEY_COUNT 8 // keep same as define in cmdhfmf.c -> readerAttack()

+ nonces_t ar_nr_resp[ATTACK_KEY_COUNT*2]; //*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]; //*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

// Authenticate response - nonce

- uint32_t nonce = bytes_to_num(rAUTH_NT, 4);

+ uint32_t nonce;

+ if (flags & FLAG_RANDOM_NONCE) {

+ nonce = prand();

+ } else {

+ nonce = bytes_to_num(rAUTH_NT, 4);

+ }

//-- Determine the UID

// Can be set from emulator memory, incoming data

//-- Determine the UID

// Can be set from emulator memory, incoming data

// 4B uid comes from data-portion of packet

memcpy(rUIDBCC1,datain,4);

rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];

// 4B uid comes from data-portion of packet

memcpy(rUIDBCC1,datain,4);

rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];

-

+ _UID_LEN = 4;

} else if (flags & FLAG_7B_UID_IN_DATA) {

// 7B uid comes from data-portion of packet

memcpy(&rUIDBCC1[1],datain,3);

memcpy(rUIDBCC2, datain+3, 4);

} else if (flags & FLAG_7B_UID_IN_DATA) {

// 7B uid comes from data-portion of packet

memcpy(&rUIDBCC1[1],datain,3);

memcpy(rUIDBCC2, datain+3, 4);

- _7BUID = true;

+ _UID_LEN = 7;

+ } else if (flags & FLAG_10B_UID_IN_DATA) {

+ memcpy(&rUIDBCC1[1], datain, 3);

+ memcpy(&rUIDBCC2[1], datain+3, 3);

+ memcpy( rUIDBCC3, datain+6, 4);

+ _UID_LEN = 10;

} else {

- // get UID from emul memory

+ // get UID from emul memory - guess at length

emlGetMemBt(receivedCmd, 7, 1);

- _7BUID = !(receivedCmd[0] == 0x00);

- if (!_7BUID) { // ---------- 4BUID

+ if (receivedCmd[0] == 0x00) { // ---------- 4BUID

emlGetMemBt(rUIDBCC1, 0, 4);

+ _UID_LEN = 4;

} else { // ---------- 7BUID

emlGetMemBt(&rUIDBCC1[1], 0, 3);

emlGetMemBt(rUIDBCC2, 3, 4);

} else { // ---------- 7BUID

emlGetMemBt(&rUIDBCC1[1], 0, 3);

emlGetMemBt(rUIDBCC2, 3, 4);

+ _UID_LEN = 7;

}

- /*

- * Regardless of what method was used to set the UID, set fifth byte and modify

- * the ATQA for 4 or 7-byte UID

- */

- rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];

- if (_7BUID) {

- rATQA[0] = 0x44;

- rUIDBCC1[0] = 0x88;

- rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];

- rUIDBCC2[4] = rUIDBCC2[0] ^ rUIDBCC2[1] ^ rUIDBCC2[2] ^ rUIDBCC2[3];

- }

-

- if (MF_DBGLEVEL >= 1) {

- if (!_7BUID) {

- Dbprintf("4B UID: %02x%02x%02x%02x",

- rUIDBCC1[0], rUIDBCC1[1], rUIDBCC1[2], rUIDBCC1[3]);

- } else {

- Dbprintf("7B UID: (%02x)%02x%02x%02x%02x%02x%02x%02x",

- rUIDBCC1[0], rUIDBCC1[1], rUIDBCC1[2], rUIDBCC1[3],

- rUIDBCC2[0], rUIDBCC2[1] ,rUIDBCC2[2], rUIDBCC2[3]);

- }

+ switch (_UID_LEN) {

+ case 4:

+ // save CUID

+ cuid = bytes_to_num(rUIDBCC1, 4);

+ // BCC

+ rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];

+ if (MF_DBGLEVEL >= 2) {

+ Dbprintf("4B UID: %02x%02x%02x%02x",

+ rUIDBCC1[0],

+ rUIDBCC1[1],

+ rUIDBCC1[2],

+ rUIDBCC1[3]

+ );

+ }

+ break;

+ case 7:

+ rATQA[0] |= 0x40;

+ // save CUID

+ cuid = bytes_to_num(rUIDBCC2, 4);

+ // CascadeTag, CT

+ rUIDBCC1[0] = 0x88;

+ // BCC

+ rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];

+ rUIDBCC2[4] = rUIDBCC2[0] ^ rUIDBCC2[1] ^ rUIDBCC2[2] ^ rUIDBCC2[3];

+ if (MF_DBGLEVEL >= 2) {

+ Dbprintf("7B UID: %02x %02x %02x %02x %02x %02x %02x",

+ rUIDBCC1[1],

+ rUIDBCC1[2],

+ rUIDBCC1[3],

+ rUIDBCC2[0],

+ rUIDBCC2[1],

+ rUIDBCC2[2],

+ rUIDBCC2[3]

+ );

+ }

+ break;

+ case 10:

+ rATQA[0] |= 0x80;

+ //sak_10[0] &= 0xFB;

+ // save CUID

+ cuid = bytes_to_num(rUIDBCC3, 4);

+ // CascadeTag, CT

+ rUIDBCC1[0] = 0x88;

+ rUIDBCC2[0] = 0x88;

+ // BCC

+ rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];

+ rUIDBCC2[4] = rUIDBCC2[0] ^ rUIDBCC2[1] ^ rUIDBCC2[2] ^ rUIDBCC2[3];

+ rUIDBCC3[4] = rUIDBCC3[0] ^ rUIDBCC3[1] ^ rUIDBCC3[2] ^ rUIDBCC3[3];

+

+ if (MF_DBGLEVEL >= 2) {

+ Dbprintf("10B UID: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",

+ rUIDBCC1[1],

+ rUIDBCC1[2],

+ rUIDBCC1[3],

+ rUIDBCC2[1],

+ rUIDBCC2[2],

+ rUIDBCC2[3],

+ rUIDBCC3[0],

+ rUIDBCC3[1],

+ rUIDBCC3[2],

+ rUIDBCC3[3]

+ );

+ }

+ break;

+ default:

+ break;

}

// We need to listen to the high-frequency, peak-detected path.

}

// We need to listen to the high-frequency, peak-detected path.

clear_trace();

set_tracing(TRUE);

clear_trace();

set_tracing(TRUE);

-

bool finished = FALSE;

- while (!BUTTON_PRESS() && !finished) {

+ bool button_pushed = BUTTON_PRESS();

+ while (!button_pushed && !finished && !usb_poll_validate_length()) {

WDT_HIT();

// find reader field

WDT_HIT();

// find reader field

cardSTATE_TO_IDLE();

LED_A_ON();

}

cardSTATE_TO_IDLE();

LED_A_ON();

}

- }

- if(cardSTATE == MFEMUL_NOFIELD) continue;

+ }

+ if (cardSTATE == MFEMUL_NOFIELD) continue;

//Now, get data

-

res = EmGetCmd(receivedCmd, &len, receivedCmd_par);

if (res == 2) { //Field is off!

cardSTATE = MFEMUL_NOFIELD;

res = EmGetCmd(receivedCmd, &len, receivedCmd_par);

if (res == 2) { //Field is off!

cardSTATE = MFEMUL_NOFIELD;

} else if (res == 1) {

break; //return value 1 means button press

}

} else if (res == 1) {

break; //return value 1 means button press

}

-

+

// REQ or WUP request in ANY state and WUP in HALTED state

- if (len == 1 && ((receivedCmd[0] == 0x26 && cardSTATE != MFEMUL_HALTED) || receivedCmd[0] == 0x52)) {

+ if (len == 1 && ((receivedCmd[0] == ISO14443A_CMD_REQA && cardSTATE != MFEMUL_HALTED) || receivedCmd[0] == ISO14443A_CMD_WUPA)) {

selTimer = GetTickCount();

- EmSendCmdEx(rATQA, sizeof(rATQA), (receivedCmd[0] == 0x52));

+ EmSendCmdEx(rATQA, sizeof(rATQA), (receivedCmd[0] == ISO14443A_CMD_WUPA));

cardSTATE = MFEMUL_SELECT1;

// init crypto block

cardSTATE = MFEMUL_SELECT1;

// init crypto block

LED_C_OFF();

crypto1_destroy(pcs);

cardAUTHKEY = 0xff;

LED_C_OFF();

crypto1_destroy(pcs);

cardAUTHKEY = 0xff;

+ if (flags & FLAG_RANDOM_NONCE) {

+ nonce = prand();

+ }

continue;

}

continue;

}

break;

}

case MFEMUL_SELECT1:{

break;

}

case MFEMUL_SELECT1:{

- // select all

- if (len == 2 && (receivedCmd[0] == 0x93 && receivedCmd[1] == 0x20)) {

+ // select all - 0x93 0x20

+ if (len == 2 && (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT && receivedCmd[1] == 0x20)) {

if (MF_DBGLEVEL >= 4) Dbprintf("SELECT ALL received");

EmSendCmd(rUIDBCC1, sizeof(rUIDBCC1));

break;

}

if (MF_DBGLEVEL >= 4) Dbprintf("SELECT ALL received");

EmSendCmd(rUIDBCC1, sizeof(rUIDBCC1));

break;

}

- if (MF_DBGLEVEL >= 4 && len == 9 && receivedCmd[0] == 0x93 && receivedCmd[1] == 0x70 )

- {

- Dbprintf("SELECT %02x%02x%02x%02x received",receivedCmd[2],receivedCmd[3],receivedCmd[4],receivedCmd[5]);

+ // select card - 0x93 0x70 ...

+ if (len == 9 &&

+ (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC1, 4) == 0)) {

+ if (MF_DBGLEVEL >= 4)

+ Dbprintf("SELECT %02x%02x%02x%02x received",receivedCmd[2],receivedCmd[3],receivedCmd[4],receivedCmd[5]);

+

+ switch(_UID_LEN) {

+ case 4:

+ cardSTATE = MFEMUL_WORK;

+ LED_B_ON();

+ if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol1 time: %d", GetTickCount() - selTimer);

+ EmSendCmd(rSAKfinal, sizeof(rSAKfinal));

+ break;

+ case 7:

+ cardSTATE = MFEMUL_SELECT2;

+ EmSendCmd(rSAK1, sizeof(rSAK1));

+ break;

+ case 10:

+ cardSTATE = MFEMUL_SELECT2;

+ EmSendCmd(rSAK1, sizeof(rSAK1));

+ break;

+ default:break;

+ }

+ } else {

+ cardSTATE_TO_IDLE();

}

- // select card

+ break;

+ }

+ case MFEMUL_SELECT3:{

+ if (!len) {

+ LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

+ break;

+ }

+ // select all cl3 - 0x97 0x20

+ if (len == 2 && (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_3 && receivedCmd[1] == 0x20)) {

+ EmSendCmd(rUIDBCC3, sizeof(rUIDBCC3));

+ break;

+ }

+ // select card cl3 - 0x97 0x70

if (len == 9 &&

- (receivedCmd[0] == 0x93 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC1, 4) == 0)) {

- EmSendCmd(_7BUID?rSAK1:rSAK, _7BUID?sizeof(rSAK1):sizeof(rSAK));

- cuid = bytes_to_num(rUIDBCC1, 4);

- if (!_7BUID) {

- cardSTATE = MFEMUL_WORK;

- LED_B_ON();

- if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol1 time: %d", GetTickCount() - selTimer);

- break;

- } else {

- cardSTATE = MFEMUL_SELECT2;

- }

+ (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_3 &&

+ receivedCmd[1] == 0x70 &&

+ memcmp(&receivedCmd[2], rUIDBCC3, 4) == 0) ) {

+

+ EmSendCmd(rSAKfinal, sizeof(rSAKfinal));

+ cardSTATE = MFEMUL_WORK;

+ LED_B_ON();

+ if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol3 time: %d", GetTickCount() - selTimer);

+ break;

}

+ cardSTATE_TO_IDLE();

break;

}

case MFEMUL_AUTH1:{

break;

}

case MFEMUL_AUTH1:{

- if( len != 8)

- {

+ if( len != 8) {

cardSTATE_TO_IDLE();

LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

break;

}

cardSTATE_TO_IDLE();

LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

break;

}

- uint32_t ar = bytes_to_num(receivedCmd, 4);

- uint32_t nr = bytes_to_num(&receivedCmd[4], 4);

-

- //Collect AR/NR

- if(ar_nr_collected < 2){

- if(ar_nr_responses[2] != ar)

- {// Avoid duplicates... probably not necessary, ar should vary.

- ar_nr_responses[ar_nr_collected*4] = cuid;

- ar_nr_responses[ar_nr_collected*4+1] = nonce;

- ar_nr_responses[ar_nr_collected*4+2] = ar;

- ar_nr_responses[ar_nr_collected*4+3] = nr;

- ar_nr_collected++;

+ uint32_t nr = bytes_to_num(receivedCmd, 4);

+ uint32_t ar = bytes_to_num(&receivedCmd[4], 4);

+

+ // Collect AR/NR per keytype & sector

+ if(flags & FLAG_NR_AR_ATTACK) {

+ 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;

+ if (flags & FLAG_RANDOM_NONCE) {

+ nonce = prand();

+ } else {

+ nonce = nonce*7;

+ }

+ break;

+ }

+ } else {

+ moebius_n_count++;

+ // if we've collected all the nonces we need - finish.

+ if (nonce1_count == moebius_n_count) finished = true;

+ }

+ ar_nr_collected[i+mM]++;

+ }

+ // we found right spot for this nonce stop looking

+ break;

+ }

}

// --- crypto

}

// --- crypto

- crypto1_word(pcs, ar , 1);

- cardRr = nr ^ crypto1_word(pcs, 0, 0);

+ crypto1_word(pcs, nr , 1);

+ cardRr = ar ^ crypto1_word(pcs, 0, 0);

// test if auth OK

if (cardRr != prng_successor(nonce, 64)){

// test if auth OK

if (cardRr != prng_successor(nonce, 64)){

break;

}

break;

}

+ //auth successful

ans = prng_successor(nonce, 96) ^ crypto1_word(pcs, 0, 0);

num_to_bytes(ans, 4, rAUTH_AT);

ans = prng_successor(nonce, 96) ^ crypto1_word(pcs, 0, 0);

num_to_bytes(ans, 4, rAUTH_AT);

if (!len) {

LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

break;

if (!len) {

LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

break;

- }

- if (len == 2 && (receivedCmd[0] == 0x95 && receivedCmd[1] == 0x20)) {

+ }

+ // select all cl2 - 0x95 0x20

+ if (len == 2 && (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_2 && receivedCmd[1] == 0x20)) {

EmSendCmd(rUIDBCC2, sizeof(rUIDBCC2));

break;

}

EmSendCmd(rUIDBCC2, sizeof(rUIDBCC2));

break;

}

- // select 2 card

+ // select cl2 card - 0x95 0x70 xxxxxxxxxxxx

if (len == 9 &&

- (receivedCmd[0] == 0x95 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC2, 4) == 0)) {

- EmSendCmd(rSAK, sizeof(rSAK));

- cuid = bytes_to_num(rUIDBCC2, 4);

- cardSTATE = MFEMUL_WORK;

- LED_B_ON();

- if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol2 time: %d", GetTickCount() - selTimer);

+ (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_2 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC2, 4) == 0)) {

+ switch(_UID_LEN) {

+ case 7:

+ EmSendCmd(rSAKfinal, sizeof(rSAKfinal));

+ cardSTATE = MFEMUL_WORK;

+ LED_B_ON();

+ if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol2 time: %d", GetTickCount() - selTimer);

+ break;

+ case 10:

+ EmSendCmd(rSAK1, sizeof(rSAK1));

+ cardSTATE = MFEMUL_SELECT3;

+ break;

+ default:break;

+ }

break;

}

break;

}

if (len == 4 && (receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61)) {

}

if (len == 4 && (receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61)) {

+

+ // if authenticating to a block that shouldn't exist - as long as we are not doing the reader attack

+ if (receivedCmd[1] >= 16 * 4 && !(flags & FLAG_NR_AR_ATTACK)) {

+ //is this the correct response to an auth on a out of range block? marshmellow

+ EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));

+ if (MF_DBGLEVEL >= 2) Dbprintf("Reader tried to operate (0x%02x) on out of range block: %d (0x%02x), nacking",receivedCmd[0],receivedCmd[1],receivedCmd[1]);

+ break;

+ }

+

authTimer = GetTickCount();

cardAUTHSC = receivedCmd[1] / 4; // received block num

cardAUTHKEY = receivedCmd[0] - 0x60;

crypto1_destroy(pcs);//Added by martin

crypto1_create(pcs, emlGetKey(cardAUTHSC, cardAUTHKEY));

authTimer = GetTickCount();

cardAUTHSC = receivedCmd[1] / 4; // received block num

cardAUTHKEY = receivedCmd[0] - 0x60;

crypto1_destroy(pcs);//Added by martin

crypto1_create(pcs, emlGetKey(cardAUTHSC, cardAUTHKEY));

+ //uint64_t key=emlGetKey(cardAUTHSC, cardAUTHKEY);

+ //Dbprintf("key: %04x%08x",(uint32_t)(key>>32)&0xFFFF,(uint32_t)(key&0xFFFFFFFF));

if (!encrypted_data) { // first authentication

if (MF_DBGLEVEL >= 4) Dbprintf("Reader authenticating for block %d (0x%02x) with key %d",receivedCmd[1] ,receivedCmd[1],cardAUTHKEY );

if (!encrypted_data) { // first authentication

if (MF_DBGLEVEL >= 4) Dbprintf("Reader authenticating for block %d (0x%02x) with key %d",receivedCmd[1] ,receivedCmd[1],cardAUTHKEY );

break;

}

break;

}

+ button_pushed = BUTTON_PRESS();

}

FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

LEDsoff();

}

FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

LEDsoff();

- if(flags & FLAG_INTERACTIVE)// Interactive mode flag, means we need to send ACK

- {

- //May just aswell send the collected ar_nr in the response aswell

- cmd_send(CMD_ACK,CMD_SIMULATE_MIFARE_CARD,0,0,&ar_nr_responses,ar_nr_collected*4*4);

- }

-

- if(flags & FLAG_NR_AR_ATTACK)

- {

- if(ar_nr_collected > 1) {

- Dbprintf("Collected two pairs of AR/NR which can be used to extract keys from reader:");

- Dbprintf("../tools/mfkey/mfkey32 %08x %08x %08x %08x %08x %08x",

- ar_nr_responses[0], // UID

- ar_nr_responses[1], //NT

- ar_nr_responses[2], //AR1

- ar_nr_responses[3], //NR1

- ar_nr_responses[6], //AR2

- ar_nr_responses[7] //NR2

- );

- } else {

- Dbprintf("Failed to obtain two AR/NR pairs!");

- if(ar_nr_collected >0) {

- Dbprintf("Only got these: UID=%08x, nonce=%08x, AR1=%08x, NR1=%08x",

- ar_nr_responses[0], // UID

- ar_nr_responses[1], //NT

- ar_nr_responses[2], //AR1

- ar_nr_responses[3] //NR1

+ if(flags & FLAG_NR_AR_ATTACK && MF_DBGLEVEL >= 1) {

+ 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());

);

}

if (MF_DBGLEVEL >= 1) Dbprintf("Emulator stopped. Tracing: %d trace length: %d ", tracing, BigBuf_get_traceLen());

-

-}

+ if(flags & FLAG_INTERACTIVE) { // Interactive mode flag, means we need to send ACK

+ //Send the collected ar_nr in the response

+ cmd_send(CMD_ACK,CMD_SIMULATE_MIFARE_CARD,button_pushed,0,&ar_nr_resp,sizeof(ar_nr_resp));

+ }

+}

//-----------------------------------------------------------------------------