diff --git a/applications/main/nfc/application.fam b/applications/main/nfc/application.fam index 4d8cb86c0..b92d0ebf1 100644 --- a/applications/main/nfc/application.fam +++ b/applications/main/nfc/application.fam @@ -65,6 +65,15 @@ App( sources=["plugins/supported_cards/troika.c"], ) +App( + appid="washcity_parser", + apptype=FlipperAppType.PLUGIN, + entry_point="washcity_plugin_ep", + targets=["f7"], + requires=["nfc"], + sources=["plugins/supported_cards/washcity.c"], +) + App( appid="plantain_parser", apptype=FlipperAppType.PLUGIN, diff --git a/applications/main/nfc/plugins/supported_cards/washcity.c b/applications/main/nfc/plugins/supported_cards/washcity.c new file mode 100644 index 000000000..a0edeef6a --- /dev/null +++ b/applications/main/nfc/plugins/supported_cards/washcity.c @@ -0,0 +1,200 @@ +/* + * Parser for WashCity MarkItaly Card (Europe). + * + * Copyright 2023 Filipe Polido (YaBaPT) + * + * Based on MetroMoney by Leptoptilos + * + * This program is free software: you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ +#include "nfc_supported_card_plugin.h" + +#include "protocols/mf_classic/mf_classic.h" +#include + +#include +#include +#include +#include + +#define TAG "WashCity" + +typedef struct { + uint64_t a; + uint64_t b; +} MfClassicKeyPair; + +static const MfClassicKeyPair washcity_1k_keys[] = { + {.a = 0xA0A1A2A3A4A5, .b = 0x010155010100}, // Sector 00 + {.a = 0xC78A3D0E1BCD, .b = 0xFFFFFFFFFFFF}, // Sector 01 + {.a = 0xC78A3D0E0000, .b = 0xFFFFFFFFFFFF}, // Sector 02 + {.a = 0xC78A3D0E0000, .b = 0xFFFFFFFFFFFF}, // Sector 03 + {.a = 0xC78A3D0E0000, .b = 0xFFFFFFFFFFFF}, // Sector 04 + {.a = 0xC78A3D0E0000, .b = 0xFFFFFFFFFFFF}, // Sector 05 + {.a = 0xC78A3D0E0000, .b = 0xFFFFFFFFFFFF}, // Sector 06 + {.a = 0xC78A3D0E0000, .b = 0xFFFFFFFFFFFF}, // Sector 07 + {.a = 0xC78A3D0E0000, .b = 0xFFFFFFFFFFFF}, // Sector 08 + {.a = 0x010155010100, .b = 0xFFFFFFFFFFFF}, // Sector 09 + {.a = 0x010155010100, .b = 0xFFFFFFFFFFFF}, // Sector 10 + {.a = 0x010155010100, .b = 0xFFFFFFFFFFFF}, // Sector 11 + {.a = 0x010155010100, .b = 0xFFFFFFFFFFFF}, // Sector 12 + {.a = 0x010155010100, .b = 0xFFFFFFFFFFFF}, // Sector 13 + {.a = 0x010155010100, .b = 0xFFFFFFFFFFFF}, // Sector 14 + {.a = 0x010155010100, .b = 0xFFFFFFFFFFFF}, // Sector 15 +}; + +static bool washcity_verify(Nfc* nfc) { + bool verified = false; + + do { + const uint8_t ticket_sector_number = 0; + const uint8_t ticket_block_number = + mf_classic_get_first_block_num_of_sector(ticket_sector_number) + 1; + FURI_LOG_D(TAG, "Verifying sector %u", ticket_sector_number); + + MfClassicKey key = {0}; + nfc_util_num2bytes(washcity_1k_keys[ticket_sector_number].a, COUNT_OF(key.data), key.data); + + MfClassicAuthContext auth_context; + MfClassicError error = mf_classic_poller_sync_auth( + nfc, ticket_block_number, &key, MfClassicKeyTypeA, &auth_context); + if(error != MfClassicErrorNone) { + FURI_LOG_D(TAG, "Failed to read block %u: %d", ticket_block_number, error); + break; + } + + verified = true; + } while(false); + + return verified; +} + +static bool washcity_read(Nfc* nfc, NfcDevice* device) { + furi_assert(nfc); + furi_assert(device); + + bool is_read = false; + + MfClassicData* data = mf_classic_alloc(); + nfc_device_copy_data(device, NfcProtocolMfClassic, data); + + do { + MfClassicType type = MfClassicTypeMini; + MfClassicError error = mf_classic_poller_sync_detect_type(nfc, &type); + if(error != MfClassicErrorNone) break; + + data->type = type; + if(type != MfClassicType1k) break; + + MfClassicDeviceKeys keys = { + .key_a_mask = 0, + .key_b_mask = 0, + }; + for(size_t i = 0; i < mf_classic_get_total_sectors_num(data->type); i++) { + nfc_util_num2bytes(washcity_1k_keys[i].a, sizeof(MfClassicKey), keys.key_a[i].data); + FURI_BIT_SET(keys.key_a_mask, i); + nfc_util_num2bytes(washcity_1k_keys[i].b, sizeof(MfClassicKey), keys.key_b[i].data); + FURI_BIT_SET(keys.key_b_mask, i); + } + + error = mf_classic_poller_sync_read(nfc, &keys, data); + if(error != MfClassicErrorNone) { + FURI_LOG_W(TAG, "Failed to read data"); + break; + } + + nfc_device_set_data(device, NfcProtocolMfClassic, data); + + is_read = true; + } while(false); + + mf_classic_free(data); + + return is_read; +} + +static bool washcity_parse(const NfcDevice* device, FuriString* parsed_data) { + furi_assert(device); + + const MfClassicData* data = nfc_device_get_data(device, NfcProtocolMfClassic); + + bool parsed = false; + + do { + // Verify key + const uint8_t ticket_sector_number = 1; + const uint8_t ticket_block_number = 0; + + const MfClassicSectorTrailer* sec_tr = + mf_classic_get_sector_trailer_by_sector(data, ticket_sector_number); + + const uint64_t key = nfc_util_bytes2num(sec_tr->key_a.data, COUNT_OF(sec_tr->key_a.data)); + if(key != washcity_1k_keys[ticket_sector_number].a) break; + + // Parse data + const uint8_t start_block_num = + mf_classic_get_first_block_num_of_sector(ticket_sector_number); + + const uint8_t* block_start_ptr = + &data->block[start_block_num + ticket_block_number].data[0]; + + uint32_t balance = nfc_util_bytes2num(block_start_ptr + 2, 2); + + uint32_t balance_eur = balance / 100; + uint8_t balance_cents = balance % 100; + + size_t uid_len = 0; + const uint8_t* uid = mf_classic_get_uid(data, &uid_len); + + // Card Number is printed in HEX (equal to UID) + char card_number[2 * uid_len + 1]; + + for(size_t i = 0; i < uid_len; ++i) { + card_number[2 * i] = "0123456789ABCDEF"[uid[i] >> 4]; + card_number[2 * i + 1] = "0123456789ABCDEF"[uid[i] & 0xF]; + } + + card_number[2 * uid_len] = '\0'; + + furi_string_printf( + parsed_data, + "\e#WashCity\nCard number: %s\nBalance: %lu.%02u EUR", + card_number, + balance_eur, + balance_cents); + parsed = true; + } while(false); + + return parsed; +} + +/* Actual implementation of app<>plugin interface */ +static const NfcSupportedCardsPlugin washcity_plugin = { + .protocol = NfcProtocolMfClassic, + .verify = washcity_verify, + .read = washcity_read, + .parse = washcity_parse, +}; + +/* Plugin descriptor to comply with basic plugin specification */ +static const FlipperAppPluginDescriptor washcity_plugin_descriptor = { + .appid = NFC_SUPPORTED_CARD_PLUGIN_APP_ID, + .ep_api_version = NFC_SUPPORTED_CARD_PLUGIN_API_VERSION, + .entry_point = &washcity_plugin, +}; + +/* Plugin entry point - must return a pointer to const descriptor */ +const FlipperAppPluginDescriptor* washcity_plugin_ep() { + return &washcity_plugin_descriptor; +} \ No newline at end of file