mirror of
https://github.com/DarkFlippers/unleashed-firmware
synced 2024-12-18 08:43:10 +00:00
258 lines
8.8 KiB
C
258 lines
8.8 KiB
C
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#include "nfc_supported_card_plugin.h"
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#include <flipper_application/flipper_application.h>
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#include <nfc/nfc_device.h>
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#include <nfc/helpers/nfc_util.h>
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#include <nfc/protocols/mf_classic/mf_classic_poller_sync.h>
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#include <stdint.h>
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#define TAG "MiZIP"
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#define KEY_LENGTH 6
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#define MIZIP_KEY_TO_GEN 5
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#define UID_LENGTH 4
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typedef struct {
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uint64_t a;
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uint64_t b;
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} MfClassicKeyPair;
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typedef struct {
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MfClassicKeyPair* keys;
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uint32_t verify_sector;
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} MizipCardConfig;
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static MfClassicKeyPair mizip_1k_keys[] = {
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{.a = 0xa0a1a2a3a4a5, .b = 0xb4c132439eef}, // 000
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{.a = 0x000000000000, .b = 0x000000000000}, // 001
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{.a = 0x000000000000, .b = 0x000000000000}, // 002
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{.a = 0x000000000000, .b = 0x000000000000}, // 003
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{.a = 0x000000000000, .b = 0x000000000000}, // 004
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{.a = 0x0222179AB995, .b = 0x13321774F9B5}, // 005
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{.a = 0xB25CBD76A7B4, .b = 0x7571359B4274}, // 006
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{.a = 0xDA857B4907CC, .b = 0xD26B856175F7}, // 007
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{.a = 0x16D85830C443, .b = 0x8F790871A21E}, // 008
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{.a = 0x88BD5098FC82, .b = 0xFCD0D77745E4}, // 009
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{.a = 0x983349449D78, .b = 0xEA2631FBDEDD}, // 010
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{.a = 0xC599F962F3D9, .b = 0x949B70C14845}, // 011
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{.a = 0x72E668846BE8, .b = 0x45490B5AD707}, // 012
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{.a = 0xBCA105E5685E, .b = 0x248DAF9D674D}, // 013
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{.a = 0x4F6FE072D1FD, .b = 0x4250A05575FA}, // 014
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{.a = 0x56438ABE8152, .b = 0x59A45912B311}, // 015
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};
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static MfClassicKeyPair mizip_mini_keys[] = {
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{.a = 0xa0a1a2a3a4a5, .b = 0xb4c132439eef}, // 000
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{.a = 0x000000000000, .b = 0x000000000000}, // 001
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{.a = 0x000000000000, .b = 0x000000000000}, // 002
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{.a = 0x000000000000, .b = 0x000000000000}, // 003
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{.a = 0x000000000000, .b = 0x000000000000}, // 004
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};
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//KDF
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void mizip_generate_key(uint8_t* uid, uint8_t keyA[5][KEY_LENGTH], uint8_t keyB[5][KEY_LENGTH]) {
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// Static XOR table for key generation
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static const uint8_t xor_table_keyA[4][6] = {
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{0x09, 0x12, 0x5A, 0x25, 0x89, 0xE5},
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{0xAB, 0x75, 0xC9, 0x37, 0x92, 0x2F},
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{0xE2, 0x72, 0x41, 0xAF, 0x2C, 0x09},
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{0x31, 0x7A, 0xB7, 0x2F, 0x44, 0x90}};
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static const uint8_t xor_table_keyB[4][6] = {
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{0xF1, 0x2C, 0x84, 0x53, 0xD8, 0x21},
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{0x73, 0xE7, 0x99, 0xFE, 0x32, 0x41},
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{0xAA, 0x4D, 0x13, 0x76, 0x56, 0xAE},
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{0xB0, 0x13, 0x27, 0x27, 0x2D, 0xFD}};
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// Permutation table for rearranging elements in uid
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static const uint8_t xorOrderA[6] = {0, 1, 2, 3, 0, 1};
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static const uint8_t xorOrderB[6] = {2, 3, 0, 1, 2, 3};
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// Generate key based on uid and XOR table
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for(uint8_t j = 1; j < 5; j++) {
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for(uint8_t i = 0; i < 6; i++) {
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keyA[j][i] = uid[xorOrderA[i]] ^ xor_table_keyA[j - 1][i];
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keyB[j][i] = uid[xorOrderB[i]] ^ xor_table_keyB[j - 1][i];
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}
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}
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}
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static bool mizip_get_card_config(MizipCardConfig* config, MfClassicType type) {
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bool success = true;
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if(type == MfClassicType1k) {
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config->verify_sector = 0;
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config->keys = mizip_1k_keys;
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} else if(type == MfClassicTypeMini) {
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config->verify_sector = 0;
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config->keys = mizip_mini_keys;
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} else {
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success = false;
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}
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return success;
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}
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static bool mizip_verify_type(Nfc* nfc, MfClassicType type) {
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bool verified = false;
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do {
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MizipCardConfig cfg = {};
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if(!mizip_get_card_config(&cfg, type)) break;
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const uint8_t block_num = mf_classic_get_first_block_num_of_sector(cfg.verify_sector);
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FURI_LOG_D(TAG, "Verifying sector %li", cfg.verify_sector);
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MfClassicKey key = {0};
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nfc_util_num2bytes(cfg.keys[cfg.verify_sector].b, COUNT_OF(key.data), key.data);
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MfClassicAuthContext auth_context;
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MfClassicError error =
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mf_classic_poller_sync_auth(nfc, block_num, &key, MfClassicKeyTypeB, &auth_context);
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if(error != MfClassicErrorNone) {
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FURI_LOG_D(
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TAG, "Failed to read block %u: %d, this is not a MiZIP card", block_num, error);
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break;
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}
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FURI_LOG_D(TAG, "Found a MiZIP Card");
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verified = true;
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} while(false);
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return verified;
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}
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static bool mizip_verify(Nfc* nfc) {
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return mizip_verify_type(nfc, MfClassicType1k) || mizip_verify_type(nfc, MfClassicTypeMini);
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}
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static bool mizip_read(Nfc* nfc, NfcDevice* device) {
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FURI_LOG_D(TAG, "Entering MiZIP KDF");
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furi_assert(nfc);
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furi_assert(device);
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bool is_read = false;
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MfClassicData* data = mf_classic_alloc();
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nfc_device_copy_data(device, NfcProtocolMfClassic, data);
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do {
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MfClassicType type = MfClassicTypeMini;
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MfClassicError error = mf_classic_poller_sync_detect_type(nfc, &type);
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if(error != MfClassicErrorNone) break;
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//temp fix but fix mf_classic_poller_sync_detect_type because view type mfclassic1k and not verify mfmini
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data->type = MfClassicTypeMini;
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MizipCardConfig cfg = {};
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if(!mizip_get_card_config(&cfg, data->type)) break;
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uint8_t uid[UID_LENGTH];
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memcpy(uid, data->iso14443_3a_data->uid, UID_LENGTH);
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uint8_t keyA[MIZIP_KEY_TO_GEN][KEY_LENGTH];
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uint8_t keyB[MIZIP_KEY_TO_GEN][KEY_LENGTH];
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mizip_generate_key(uid, keyA, keyB);
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for(size_t i = 0; i < mf_classic_get_total_sectors_num(data->type); i++) {
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if(cfg.keys[i].a == 0x000000000000 && cfg.keys[i].b == 0x000000000000) {
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cfg.keys[i].a = nfc_util_bytes2num(keyA[i], KEY_LENGTH);
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cfg.keys[i].b = nfc_util_bytes2num(keyB[i], KEY_LENGTH);
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}
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}
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MfClassicDeviceKeys keys = {};
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for(size_t i = 0; i < mf_classic_get_total_sectors_num(data->type); i++) {
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nfc_util_num2bytes(cfg.keys[i].a, sizeof(MfClassicKey), keys.key_a[i].data);
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FURI_BIT_SET(keys.key_a_mask, i);
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nfc_util_num2bytes(cfg.keys[i].b, sizeof(MfClassicKey), keys.key_b[i].data);
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FURI_BIT_SET(keys.key_b_mask, i);
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}
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error = mf_classic_poller_sync_read(nfc, &keys, data);
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if(error != MfClassicErrorNone) {
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FURI_LOG_W(TAG, "Failed to read data");
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break;
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}
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nfc_device_set_data(device, NfcProtocolMfClassic, data);
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is_read = mf_classic_is_card_read(data);
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} while(false);
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mf_classic_free(data);
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return is_read;
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}
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static bool mizip_parse(const NfcDevice* device, FuriString* parsed_data) {
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furi_assert(device);
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furi_assert(parsed_data);
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const MfClassicData* data = nfc_device_get_data(device, NfcProtocolMfClassic);
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bool parsed = false;
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do {
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// Verify card type
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MizipCardConfig cfg = {};
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if(!mizip_get_card_config(&cfg, data->type)) break;
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// Verify key
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MfClassicSectorTrailer* sec_tr =
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mf_classic_get_sector_trailer_by_sector(data, cfg.verify_sector);
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uint64_t key = nfc_util_bytes2num(sec_tr->key_b.data, 6);
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if(key != cfg.keys[cfg.verify_sector].b) return false;
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//Get UID
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uint8_t uid[UID_LENGTH];
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memcpy(uid, data->iso14443_3a_data->uid, UID_LENGTH);
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//Get credit
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uint8_t credit_pointer = 0x08;
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uint8_t previus_credit_pointer = 0x09;
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if(data->block[10].data[0] == 0x55) {
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credit_pointer = 0x09;
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previus_credit_pointer = 0x08;
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}
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uint16_t balance = (data->block[credit_pointer].data[2] << 8) |
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(data->block[credit_pointer].data[1]);
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uint16_t previus_balance = (data->block[previus_credit_pointer].data[2] << 8) |
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(data->block[previus_credit_pointer].data[1]);
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//parse data
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furi_string_cat_printf(parsed_data, "\e#MiZIP Card\n");
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furi_string_cat_printf(parsed_data, "UID:");
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for(size_t i = 0; i < UID_LENGTH; i++) {
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furi_string_cat_printf(parsed_data, " %02X", uid[i]);
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}
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furi_string_cat_printf(
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parsed_data, "\nCurrent Credit: %d.%02d E \n", balance / 100, balance % 100);
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furi_string_cat_printf(
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parsed_data,
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"Previus Credit: %d.%02d E \n",
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previus_balance / 100,
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previus_balance % 100);
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parsed = true;
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} while(false);
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return parsed;
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}
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/* Actual implementation of app<>plugin interface */
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static const NfcSupportedCardsPlugin mizip_plugin = {
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.protocol = NfcProtocolMfClassic,
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.verify = mizip_verify,
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.read = mizip_read,
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.parse = mizip_parse,
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};
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/* Plugin descriptor to comply with basic plugin specification */
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static const FlipperAppPluginDescriptor mizip_plugin_descriptor = {
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.appid = NFC_SUPPORTED_CARD_PLUGIN_APP_ID,
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.ep_api_version = NFC_SUPPORTED_CARD_PLUGIN_API_VERSION,
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.entry_point = &mizip_plugin,
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};
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/* Plugin entry point - must return a pointer to const descriptor */
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const FlipperAppPluginDescriptor* mizip_plugin_ep() {
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return &mizip_plugin_descriptor;
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}
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