RfidResearchGroup/proxmark3
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fix: 'hf mf mifare - wrongly executed the parity-zero when not needed.

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This commit is contained in:
iceman1001 2017-12-06 19:53:41 +01:00
parent c6a7cbfc1e
commit 8a69488582
2 changed files with 17 additions and 16 deletions
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7
client/mfkey.c
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@ -33,8 +33,8 @@ uint32_t intersection(uint64_t *listA, uint64_t *listB) {
p2++;
}
else {
while (compare_uint64(p1, p2) == -1) ++p1;
while (compare_uint64(p1, p2) == 1) ++p2;
while (compare_uint64(p1, p2) < 0) ++p1;
while (compare_uint64(p1, p2) > 0) ++p2;
}
}
*p3 = -1;
@ -70,7 +70,6 @@ uint32_t nonce2key(uint32_t uid, uint32_t nt, uint32_t nr, uint64_t par_info, ui
states = lfsr_common_prefix(nr, rr, ks3x, par, (par_info == 0));
if (!states) {
printf("Failed getting states\n");
*keys = NULL;
return 0;
}
@ -78,7 +77,7 @@ uint32_t nonce2key(uint32_t uid, uint32_t nt, uint32_t nr, uint64_t par_info, ui
keylist = (uint64_t*)states;
for (i = 0; keylist[i]; i++) {
lfsr_rollback_word(states+i, uid^nt, 0);
lfsr_rollback_word(states+i, uid ^ nt, 0);
crypto1_get_lfsr(states+i, &key_recovered);
keylist[i] = key_recovered;
}

12
client/mifarehost.c
View file

@ -54,7 +54,7 @@ int mfDarkside(uint8_t blockno, uint8_t key_type, uint64_t *key) {
nt = (uint32_t)bytes_to_num(resp.d.asBytes + 4, 4);
par_list = bytes_to_num(resp.d.asBytes + 8, 8);
ks_list = bytes_to_num(resp.d.asBytes + 16, 8);
nr = bytes_to_num(resp.d.asBytes + 24, 4);
nr = (uint32_t)bytes_to_num(resp.d.asBytes + 24, 4);
break;
}
}
@ -73,6 +73,8 @@ int mfDarkside(uint8_t blockno, uint8_t key_type, uint64_t *key) {
continue;
}
// only parity zero attack
if (par_list == 0 ) {
qsort(keylist, keycount, sizeof(*keylist), compare_uint64);
keycount = intersection(last_keylist, keylist);
if (keycount == 0) {
@ -80,6 +82,7 @@ int mfDarkside(uint8_t blockno, uint8_t key_type, uint64_t *key) {
last_keylist = keylist;
continue;
}
}
if (keycount > 1) {
PrintAndLog("Found %u candidate keys. Trying to verify with authentication...\n", keycount);
@ -112,6 +115,7 @@ int mfDarkside(uint8_t blockno, uint8_t key_type, uint64_t *key) {
PrintAndLog("Test authentication failed. Restarting darkside attack");
free(last_keylist);
last_keylist = keylist;
c.arg[0] = true;
}
}
return 0;
@ -183,8 +187,7 @@ int Compare16Bits(const void * a, const void * b) {
}
// wrapper function for multi-threaded lfsr_recovery32
void* nested_worker_thread(void *arg)
{
void* nested_worker_thread(void *arg) {
struct Crypto1State *p1;
StateList_t *statelist = arg;
statelist->head.slhead = lfsr_recovery32(statelist->ks1, statelist->nt ^ statelist->uid);
@ -198,8 +201,7 @@ void* nested_worker_thread(void *arg)
return statelist->head.slhead;
}
int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo, uint8_t trgKeyType, uint8_t * resultKey, bool calibrate)
{
int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo, uint8_t trgKeyType, uint8_t * resultKey, bool calibrate) {
uint16_t i;
uint32_t uid;
UsbCommand resp;