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I was outplayed by the C programming language

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This commit is contained in:
Astra
2023-04-27 00:27:57 +03:00
parent 0ec8fc4c55
commit 0a32cd2528
1 changed files with 18 additions and 4 deletions
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lib/nfc/nfc_worker.c
+18 -4
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@@ -661,7 +661,8 @@ void nfc_worker_mf_classic_dict_attack(NfcWorker* nfc_worker) {
if(mf_classic_authenticate_skip_activate(
&tx_rx, block_num, key, MfClassicKeyA, !deactivated, cuid)) {
mf_classic_set_key_found(data, i, MfClassicKeyA, key);
FURI_LOG_D(TAG, "Key A found");
FURI_LOG_D(
TAG, "Key A found: %04lx%08lx", (uint32_t)(key >> 32), (uint32_t)key);
nfc_worker->callback(NfcWorkerEventFoundKeyA, nfc_worker->context);
uint64_t found_key;
@@ -683,8 +684,14 @@ void nfc_worker_mf_classic_dict_attack(NfcWorker* nfc_worker) {
deactivated = true;
} else {
// If the key A is marked as found and matches the searching key, invalidate it
uint8_t found_key[6];
memcpy(found_key, data->block[i].value, 6);
uint8_t current_key[6];
memcpy(current_key, &key, 6);
if(mf_classic_is_key_found(data, i, MfClassicKeyA) &&
data->block[i].value[0] == key) {
found_key == current_key) {
mf_classic_set_key_not_found(data, i, MfClassicKeyA);
is_key_a_found = false;
FURI_LOG_D(TAG, "Key %dA not found in attack", i);
@@ -694,7 +701,8 @@ void nfc_worker_mf_classic_dict_attack(NfcWorker* nfc_worker) {
is_key_b_found = mf_classic_is_key_found(data, i, MfClassicKeyB);
if(mf_classic_authenticate_skip_activate(
&tx_rx, block_num, key, MfClassicKeyB, !deactivated, cuid)) {
FURI_LOG_D(TAG, "Key B found");
FURI_LOG_D(
TAG, "Key B found: %04lx%08lx", (uint32_t)(key >> 32), (uint32_t)key);
mf_classic_set_key_found(data, i, MfClassicKeyB, key);
nfc_worker->callback(NfcWorkerEventFoundKeyB, nfc_worker->context);
nfc_worker_mf_classic_key_attack(nfc_worker, key, &tx_rx, i + 1);
@@ -702,8 +710,14 @@ void nfc_worker_mf_classic_dict_attack(NfcWorker* nfc_worker) {
deactivated = true;
} else {
// If the key B is marked as found and matches the searching key, invalidate it
uint8_t found_key[6];
memcpy(found_key, data->block[i].value + 10, 6);
uint8_t current_key[6];
memcpy(current_key, &key, 6);
if(mf_classic_is_key_found(data, i, MfClassicKeyB) &&
data->block[i].value[10] == key) {
found_key == current_key) {
mf_classic_set_key_not_found(data, i, MfClassicKeyB);
is_key_b_found = false;
FURI_LOG_D(TAG, "Key %dB not found in attack", i);