#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 "protocols.h"
+
static uint32_t iso14a_timeout;
int rsamples = 0;
uint8_t trigger = 0;
*
*@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
+ *@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;
+ int _UID_LEN = 0; // 4, 7, 10
int _7BUID = 0;
int vHf = 0; // in mV
int res;
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 rUIDBCC3[] = {0xde, 0xad, 0xbe, 0xaf, 0x62};
+
uint8_t rSAK[] = {0x08, 0xb6, 0xdd};
uint8_t rSAK1[] = {0x04, 0xda, 0x17};
+ uint8_t rSAK2[] = {0x04, 0xda, 0x17}; //need to look up
uint8_t rAUTH_NT[] = {0x01, 0x02, 0x03, 0x04};
uint8_t rAUTH_AT[] = {0x00, 0x00, 0x00, 0x00};
//Here, we collect UID,sector,keytype,NT,AR,NR,NT2,AR2,NR2
- // This can be used in a reader-only attack.
- // (it can also be retrieved via 'hf 14a list', but hey...
-
- //allow collecting up to 4 sets of nonces to allow recovery of 4 keys (2 keyA & 2 keyB)
- // must be set in multiples of 2 (for 1 keyA and 1 keyB)
- #define ATTACK_KEY_COUNT 4
- nonces_t ar_nr_resp[ATTACK_KEY_COUNT];
+ // This will be used in the reader-only attack.
+
+ //allow collecting up to 8 sets of nonces to allow recovery of 8 keys
+ #define ATTACK_KEY_COUNT 8
+ nonces_t ar_nr_resp[ATTACK_KEY_COUNT*2]; //*2 for 2 separate attack types
memset(ar_nr_resp, 0x00, sizeof(ar_nr_resp));
- uint8_t ar_nr_collected[ATTACK_KEY_COUNT];
+ uint8_t ar_nr_collected[ATTACK_KEY_COUNT*2];
memset(ar_nr_collected, 0x00, sizeof(ar_nr_collected));
+ bool collectMoebius = false;
+ uint8_t nonce1_count = 0;
+ uint8_t nonce2_count = 0;
+ uint8_t moebius_n_count = 0;
+ uint8_t mM = 0; //moebius_modifier for collection storage
+
// Authenticate response - nonce
uint32_t nonce = bytes_to_num(rAUTH_NT, 4);
// 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);
_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
emlGetMemBt(rUIDBCC1, 0, 4);
+ _UID_LEN = 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.
clear_trace();
set_tracing(TRUE);
-
bool finished = FALSE;
- while (!BUTTON_PRESS() && !finished) {
+ while (!BUTTON_PRESS() && !finished && !usb_poll_validate_length()) {
WDT_HIT();
// find reader field
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;
}
// 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
Dbprintf("SELECT %02x%02x%02x%02x received",receivedCmd[2],receivedCmd[3],receivedCmd[4],receivedCmd[5]);
}
// select card
+ // check correct sak values... (marshmellow)
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;
+ switch(_UID_LEN) {
+ case 4:
+ cardSTATE = MFEMUL_WORK;
+ LED_B_ON();
+ if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol1 time: %d", GetTickCount() - selTimer);
+ EmSendCmd(rSAK, sizeof(rSAK));
+ break;
+ case 7:
+ cardSTATE = MFEMUL_SELECT2;
+ EmSendCmd(rSAK1, sizeof(rSAK1));
+ break;
+ case 10:
+ cardSTATE = MFEMUL_SELECT2;
+ EmSendCmd(rSAK2, sizeof(rSAK2));
+ break;
+ default:break;
}
+ } else {
+ cardSTATE_TO_IDLE();
}
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;
+ }
+ if (len == 2 && (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_3 && receivedCmd[1] == 0x20)) {
+ EmSendCmd(rUIDBCC3, sizeof(rUIDBCC3));
+ break;
+ }
+ if (len == 9 &&
+ (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_3 &&
+ receivedCmd[1] == 0x70 &&
+ memcmp(&receivedCmd[2], rUIDBCC3, 4) == 0) ) {
+
+ EmSendCmd(rSAK2, sizeof(rSAK2));
+ 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:{
if( len != 8)
{
break;
}
- uint32_t ar = bytes_to_num(receivedCmd, 4);
- uint32_t nr = bytes_to_num(&receivedCmd[4], 4);
+ uint32_t nr = bytes_to_num(receivedCmd, 4);
+ uint32_t ar = bytes_to_num(&receivedCmd[4], 4);
- //Collect AR/NR per key/sector
+ //Collect AR/NR per keytype & sector
if(flags & FLAG_NR_AR_ATTACK) {
for (uint8_t i = 0; i < ATTACK_KEY_COUNT; i++) {
- if(cardAUTHKEY > 0 && i < (ATTACK_KEY_COUNT/2) ) {
- i=ATTACK_KEY_COUNT/2; //keyB skip to keyB
- } else if (cardAUTHKEY == 0 && i == ATTACK_KEY_COUNT/2) {
- break; //should not get here - quit
- }
- // if first auth for sector, or matches sector of previous auth
- if ( ar_nr_collected[i]==0 || (cardAUTHSC == ar_nr_resp[i].sector && ar_nr_collected[i] > 0) ) {
- if(ar_nr_collected[i] < 2) {
- if(ar_nr_resp[ar_nr_collected[i]].ar != ar)
- {// Avoid duplicates... probably not necessary, ar should vary.
- if (ar_nr_collected[i]==0) {
- ar_nr_resp[i].cuid = cuid;
- ar_nr_resp[i].sector = cardAUTHSC;
- ar_nr_resp[i].nonce = nonce;
- ar_nr_resp[i].ar = ar;
- ar_nr_resp[i].nr = nr;
- } else {
- ar_nr_resp[i].ar2 = ar;
- ar_nr_resp[i].nr2 = nr;
+ 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 (!collectMoebius) {
+ 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
+ collectMoebius = true;
+ mM = ATTACK_KEY_COUNT;
+ nonce = nonce*7;
+ }
+ } 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]++;
+ ar_nr_collected[i+mM]++;
break;
}
+ } else { //already collected 2 nonces for sector - reader looping? - quit
+ //finished = true;
}
}
}
}
-
+
// --- 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)){
// select 2 card
if (len == 9 &&
(receivedCmd[0] == 0x95 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC2, 4) == 0)) {
+ //which sak now? (marshmellow)
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);
+ switch(_UID_LEN) {
+ case 7:
+ cardSTATE = MFEMUL_WORK;
+ LED_B_ON();
+ if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol2 time: %d", GetTickCount() - selTimer);
+ break;
+ case 10:
+ cardSTATE = MFEMUL_SELECT3;
+ break;
+ default:break;
+ }
break;
}
}
if (len == 4 && (receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61)) {
+ if (receivedCmd[1] >= 16 * 4) {
+ //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));
+ //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 );
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].ar, //AR1
ar_nr_resp[i].nr, //NR1
- ar_nr_resp[i].ar2, //AR2
- ar_nr_resp[i].nr2 //NR2
+ 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(flags & FLAG_INTERACTIVE)// Interactive mode flag, means we need to send ACK
{
- //May just aswell send the collected ar_nr in the response aswell
+ //Send the collected ar_nr in the response
cmd_send(CMD_ACK,CMD_SIMULATE_MIFARE_CARD,0,0,&ar_nr_resp,sizeof(ar_nr_resp));
}
projects / proxmark3-svn / blobdiff