#include "nice_flor_s.h" #include "../blocks/const.h" #include "../blocks/decoder.h" #include "../blocks/encoder.h" #include "../blocks/generic.h" #include "../blocks/math.h" /* * https://phreakerclub.com/1615 * https://phreakerclub.com/forum/showthread.php?t=2360 * https://vrtp.ru/index.php?showtopic=27867 */ #define TAG "SubGhzProtocolNiceFlorS" static const SubGhzBlockConst subghz_protocol_nice_flor_s_const = { .te_short = 500, .te_long = 1000, .te_delta = 300, .min_count_bit_for_found = 52, }; struct SubGhzProtocolDecoderNiceFlorS { SubGhzProtocolDecoderBase base; SubGhzBlockDecoder decoder; SubGhzBlockGeneric generic; const char* nice_flor_s_rainbow_table_file_name; }; struct SubGhzProtocolEncoderNiceFlorS { SubGhzProtocolEncoderBase base; SubGhzProtocolBlockEncoder encoder; SubGhzBlockGeneric generic; const char* nice_flor_s_rainbow_table_file_name; }; typedef enum { NiceFlorSDecoderStepReset = 0, NiceFlorSDecoderStepCheckHeader, NiceFlorSDecoderStepFoundHeader, NiceFlorSDecoderStepSaveDuration, NiceFlorSDecoderStepCheckDuration, } NiceFlorSDecoderStep; const SubGhzProtocolDecoder subghz_protocol_nice_flor_s_decoder = { .alloc = subghz_protocol_decoder_nice_flor_s_alloc, .free = subghz_protocol_decoder_nice_flor_s_free, .feed = subghz_protocol_decoder_nice_flor_s_feed, .reset = subghz_protocol_decoder_nice_flor_s_reset, .get_hash_data = subghz_protocol_decoder_nice_flor_s_get_hash_data, .serialize = subghz_protocol_decoder_nice_flor_s_serialize, .deserialize = subghz_protocol_decoder_nice_flor_s_deserialize, .get_string = subghz_protocol_decoder_nice_flor_s_get_string, }; const SubGhzProtocolEncoder subghz_protocol_nice_flor_s_encoder = { .alloc = subghz_protocol_encoder_nice_flor_s_alloc, .free = subghz_protocol_encoder_nice_flor_s_free, .deserialize = subghz_protocol_encoder_nice_flor_s_deserialize, .stop = subghz_protocol_encoder_nice_flor_s_stop, .yield = subghz_protocol_encoder_nice_flor_s_yield, }; const SubGhzProtocol subghz_protocol_nice_flor_s = { .name = SUBGHZ_PROTOCOL_NICE_FLOR_S_NAME, .type = SubGhzProtocolTypeDynamic, .flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_868 | SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable | SubGhzProtocolFlag_Load | SubGhzProtocolFlag_Save | SubGhzProtocolFlag_Send, .decoder = &subghz_protocol_nice_flor_s_decoder, .encoder = &subghz_protocol_nice_flor_s_encoder, }; static void subghz_protocol_nice_flor_s_remote_controller( SubGhzBlockGeneric* instance, const char* file_name); void* subghz_protocol_encoder_nice_flor_s_alloc(SubGhzEnvironment* environment) { SubGhzProtocolEncoderNiceFlorS* instance = malloc(sizeof(SubGhzProtocolEncoderNiceFlorS)); instance->base.protocol = &subghz_protocol_nice_flor_s; instance->generic.protocol_name = instance->base.protocol->name; instance->nice_flor_s_rainbow_table_file_name = subghz_environment_get_nice_flor_s_rainbow_table_file_name(environment); if(instance->nice_flor_s_rainbow_table_file_name) { FURI_LOG_I( TAG, "Loading rainbow table from %s", instance->nice_flor_s_rainbow_table_file_name); } instance->encoder.repeat = 10; instance->encoder.size_upload = 5824; //max upload 182*32 = 5824 instance->encoder.upload = malloc(instance->encoder.size_upload * sizeof(LevelDuration)); instance->encoder.is_runing = false; return instance; } void subghz_protocol_encoder_nice_flor_s_free(void* context) { furi_assert(context); SubGhzProtocolEncoderNiceFlorS* instance = context; free(instance->encoder.upload); free(instance); } /** * Generating an upload from data. * @param instance Pointer to a SubGhzProtocolEncoderNiceFlorS instance * @return true On success */ static bool subghz_protocol_encoder_nice_flor_s_get_upload(SubGhzProtocolEncoderNiceFlorS* instance, uint8_t btn, const char* file_name) { furi_assert(instance); size_t index = 0; btn = instance->generic.btn; size_t size_upload = (instance->generic.data_count_bit * 2) + ((35 + 2 + 2) * 2); if(size_upload > instance->encoder.size_upload) { FURI_LOG_E(TAG, "Size upload exceeds allocated encoder buffer."); return false; } else { instance->encoder.size_upload = size_upload; } instance->generic.cnt++; uint64_t decrypt = btn << 4 | (instance->generic.data & 0x0F00000000000) << 28 | instance->generic.serial << 16 | instance->generic.cnt; uint64_t temp_parcel = subghz_protocol_nice_flor_s_encrypt(decrypt, file_name); for (int i = 0; i < 16; i++) { static const uint64_t loops[4][32] = { { 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF, 0x0, 0xE, 0xF, 0xC, 0xD, 0xA, 0xB, 0x8, 0x9, 0x6, 0x7, 0x4, 0x5, 0x2, 0x3, 0x0, 0x1 }, { 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF, 0x0, 0xD, 0xC, 0xF, 0xE, 0x9, 0x8, 0xB, 0xA, 0x5, 0x4, 0x7, 0x6, 0x1, 0x0, 0x3, 0x2 }, { 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF, 0x0, 0xB, 0xA, 0x9, 0x8, 0xF, 0xE, 0xD, 0xC, 0x3, 0x2, 0x1, 0x0, 0x7, 0x6, 0x5, 0x4 }, { 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF, 0x0, 0x7, 0x6, 0x5, 0x4, 0x3, 0x2, 0x1, 0x0, 0xF, 0xE, 0xD, 0xC, 0xB, 0xA, 0x9, 0x8 } }; if (btn == 0x1) { instance->generic.data = btn << 4 | (0xF ^ btn ^ loops[0][i]) << 44 | (temp_parcel & 0xFFFFFFFFFFF); } else if (btn == 0x2) { instance->generic.data = btn << 4 | (0xF ^ btn ^ loops[1][i]) << 44 | (temp_parcel & 0xFFFFFFFFFFF); } else if (btn == 0x4) { instance->generic.data = btn << 4 | (0xF ^ btn ^ loops[2][i]) << 44 | (temp_parcel & 0xFFFFFFFFFFF); } else if (btn == 0x8) { instance->generic.data = btn << 4 | (0xF ^ btn ^ loops[3][i]) << 44 | (temp_parcel & 0xFFFFFFFFFFF); } //Send header for(uint8_t i = 35; i > 0; i--) { instance->encoder.upload[index++] = level_duration_make(false, (uint32_t)subghz_protocol_nice_flor_s_const.te_short); } //Send start bit instance->encoder.upload[index++] = level_duration_make(true, (uint32_t)subghz_protocol_nice_flor_s_const.te_short * 3); instance->encoder.upload[index++] = level_duration_make(false, (uint32_t)subghz_protocol_nice_flor_s_const.te_short * 3); //Send key data for(uint8_t i = instance->generic.data_count_bit; i > 0; i--) { if(bit_read(instance->generic.data, i - 1)) { //send bit 1 instance->encoder.upload[index++] = level_duration_make(true, (uint32_t)subghz_protocol_nice_flor_s_const.te_long); instance->encoder.upload[index++] = level_duration_make(false, (uint32_t)subghz_protocol_nice_flor_s_const.te_short); } else { //send bit 0 instance->encoder.upload[index++] = level_duration_make(true, (uint32_t)subghz_protocol_nice_flor_s_const.te_short); instance->encoder.upload[index++] = level_duration_make(false, (uint32_t)subghz_protocol_nice_flor_s_const.te_long); } } //Send stop bit instance->encoder.upload[index++] = level_duration_make(true, (uint32_t)subghz_protocol_nice_flor_s_const.te_short * 3); instance->encoder.upload[index++] = level_duration_make(false, (uint32_t)subghz_protocol_nice_flor_s_const.te_short * 3); } return true; } bool subghz_protocol_encoder_nice_flor_s_deserialize(void* context, FlipperFormat* flipper_format) { furi_assert(context); SubGhzProtocolEncoderNiceFlorS* instance = context; bool res = false; do { if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) { FURI_LOG_E(TAG, "Deserialize error"); break; } //optional parameter parameter flipper_format_read_uint32( flipper_format, "Repeat", (uint32_t*)&instance->encoder.repeat, 1); subghz_protocol_nice_flor_s_remote_controller(&instance->generic, instance->nice_flor_s_rainbow_table_file_name); subghz_protocol_encoder_nice_flor_s_get_upload(instance, instance->generic.btn, instance->nice_flor_s_rainbow_table_file_name); if(!flipper_format_rewind(flipper_format)) { FURI_LOG_E(TAG, "Rewind error"); break; } uint8_t key_data[sizeof(uint64_t)] = {0}; for(size_t i = 0; i < sizeof(uint64_t); i++) { key_data[sizeof(uint64_t) - i - 1] = (instance->generic.data >> i * 8) & 0xFF; } if(!flipper_format_update_hex(flipper_format, "Key", key_data, sizeof(uint64_t))) { FURI_LOG_E(TAG, "Unable to add Key"); break; } instance->encoder.is_runing = true; res = true; } while(false); return res; } void subghz_protocol_encoder_nice_flor_s_stop(void* context) { SubGhzProtocolEncoderNiceFlorS* instance = context; instance->encoder.is_runing = false; } LevelDuration subghz_protocol_encoder_nice_flor_s_yield(void* context) { SubGhzProtocolEncoderNiceFlorS* instance = context; if(instance->encoder.repeat == 0 || !instance->encoder.is_runing) { instance->encoder.is_runing = false; return level_duration_reset(); } LevelDuration ret = instance->encoder.upload[instance->encoder.front]; if(++instance->encoder.front == instance->encoder.size_upload) { instance->encoder.repeat--; instance->encoder.front = 0; } return ret; } /** * Read bytes from rainbow table * @param file_name Full path to rainbow table the file * @param address Byte address in file * @return data */ static uint8_t subghz_protocol_nice_flor_s_get_byte_in_file(const char* file_name, uint32_t address) { if(!file_name) return 0; uint8_t buffer[1] = {0}; if(subghz_keystore_raw_get_data(file_name, address, buffer, sizeof(uint8_t))) { return buffer[0]; } else { return 0; } } static inline void subghz_protocol_decoder_nice_flor_s_magic_xor(uint8_t* p, uint8_t k) { for(uint8_t i = 1; i < 6; i++) { p[i] ^= k; } } uint64_t subghz_protocol_nice_flor_s_encrypt(uint64_t data, const char* file_name) { uint8_t* p = (uint8_t*)&data; uint8_t k = 0; for(uint8_t y = 0; y < 2; y++) { k = subghz_protocol_nice_flor_s_get_byte_in_file(file_name, p[0] & 0x1f); subghz_protocol_decoder_nice_flor_s_magic_xor(p, k); p[5] &= 0x0f; p[0] ^= k & 0xe0; k = subghz_protocol_nice_flor_s_get_byte_in_file(file_name, p[0] >> 3) + 0x25; subghz_protocol_decoder_nice_flor_s_magic_xor(p, k); p[5] &= 0x0f; p[0] ^= k & 0x7; if(y == 0) { k = p[0]; p[0] = p[1]; p[1] = k; } } p[5] = ~p[5] & 0x0f; k = ~p[4]; p[4] = ~p[0]; p[0] = ~p[2]; p[2] = k; k = ~p[3]; p[3] = ~p[1]; p[1] = k; return data; } static uint64_t subghz_protocol_nice_flor_s_decrypt(SubGhzBlockGeneric* instance, const char* file_name) { furi_assert(instance); uint64_t data = instance->data; uint8_t* p = (uint8_t*)&data; uint8_t k = 0; k = ~p[4]; p[5] = ~p[5]; p[4] = ~p[2]; p[2] = ~p[0]; p[0] = k; k = ~p[3]; p[3] = ~p[1]; p[1] = k; for(uint8_t y = 0; y < 2; y++) { k = subghz_protocol_nice_flor_s_get_byte_in_file(file_name, p[0] >> 3) + 0x25; subghz_protocol_decoder_nice_flor_s_magic_xor(p, k); p[5] &= 0x0f; p[0] ^= k & 0x7; k = subghz_protocol_nice_flor_s_get_byte_in_file(file_name, p[0] & 0x1f); subghz_protocol_decoder_nice_flor_s_magic_xor(p, k); p[5] &= 0x0f; p[0] ^= k & 0xe0; if(y == 0) { k = p[0]; p[0] = p[1]; p[1] = k; } } return data; } void* subghz_protocol_decoder_nice_flor_s_alloc(SubGhzEnvironment* environment) { SubGhzProtocolDecoderNiceFlorS* instance = malloc(sizeof(SubGhzProtocolDecoderNiceFlorS)); instance->base.protocol = &subghz_protocol_nice_flor_s; instance->generic.protocol_name = instance->base.protocol->name; instance->nice_flor_s_rainbow_table_file_name = subghz_environment_get_nice_flor_s_rainbow_table_file_name(environment); if(instance->nice_flor_s_rainbow_table_file_name) { FURI_LOG_I( TAG, "Loading rainbow table from %s", instance->nice_flor_s_rainbow_table_file_name); } return instance; } void subghz_protocol_decoder_nice_flor_s_free(void* context) { furi_assert(context); SubGhzProtocolDecoderNiceFlorS* instance = context; instance->nice_flor_s_rainbow_table_file_name = NULL; free(instance); } void subghz_protocol_decoder_nice_flor_s_reset(void* context) { furi_assert(context); SubGhzProtocolDecoderNiceFlorS* instance = context; instance->decoder.parser_step = NiceFlorSDecoderStepReset; } void subghz_protocol_decoder_nice_flor_s_feed(void* context, bool level, uint32_t duration) { furi_assert(context); SubGhzProtocolDecoderNiceFlorS* instance = context; switch(instance->decoder.parser_step) { case NiceFlorSDecoderStepReset: if((!level) && (DURATION_DIFF(duration, subghz_protocol_nice_flor_s_const.te_short * 38) < subghz_protocol_nice_flor_s_const.te_delta * 38)) { //Found start header Nice Flor-S instance->decoder.parser_step = NiceFlorSDecoderStepCheckHeader; } break; case NiceFlorSDecoderStepCheckHeader: if((level) && (DURATION_DIFF(duration, subghz_protocol_nice_flor_s_const.te_short * 3) < subghz_protocol_nice_flor_s_const.te_delta * 3)) { //Found next header Nice Flor-S instance->decoder.parser_step = NiceFlorSDecoderStepFoundHeader; } else { instance->decoder.parser_step = NiceFlorSDecoderStepReset; } break; case NiceFlorSDecoderStepFoundHeader: if((!level) && (DURATION_DIFF(duration, subghz_protocol_nice_flor_s_const.te_short * 3) < subghz_protocol_nice_flor_s_const.te_delta * 3)) { //Found header Nice Flor-S instance->decoder.parser_step = NiceFlorSDecoderStepSaveDuration; instance->decoder.decode_data = 0; instance->decoder.decode_count_bit = 0; } else { instance->decoder.parser_step = NiceFlorSDecoderStepReset; } break; case NiceFlorSDecoderStepSaveDuration: if(level) { if(DURATION_DIFF(duration, subghz_protocol_nice_flor_s_const.te_short * 3) < subghz_protocol_nice_flor_s_const.te_delta) { //Found STOP bit instance->decoder.parser_step = NiceFlorSDecoderStepReset; if(instance->decoder.decode_count_bit >= subghz_protocol_nice_flor_s_const.min_count_bit_for_found) { instance->generic.data = instance->decoder.decode_data; instance->generic.data_count_bit = instance->decoder.decode_count_bit; if(instance->base.callback) instance->base.callback(&instance->base, instance->base.context); } break; } else { //save interval instance->decoder.te_last = duration; instance->decoder.parser_step = NiceFlorSDecoderStepCheckDuration; } } break; case NiceFlorSDecoderStepCheckDuration: if(!level) { if((DURATION_DIFF( instance->decoder.te_last, subghz_protocol_nice_flor_s_const.te_short) < subghz_protocol_nice_flor_s_const.te_delta) && (DURATION_DIFF(duration, subghz_protocol_nice_flor_s_const.te_long) < subghz_protocol_nice_flor_s_const.te_delta)) { subghz_protocol_blocks_add_bit(&instance->decoder, 0); instance->decoder.parser_step = NiceFlorSDecoderStepSaveDuration; } else if( (DURATION_DIFF( instance->decoder.te_last, subghz_protocol_nice_flor_s_const.te_long) < subghz_protocol_nice_flor_s_const.te_delta) && (DURATION_DIFF(duration, subghz_protocol_nice_flor_s_const.te_short) < subghz_protocol_nice_flor_s_const.te_delta)) { subghz_protocol_blocks_add_bit(&instance->decoder, 1); instance->decoder.parser_step = NiceFlorSDecoderStepSaveDuration; } else instance->decoder.parser_step = NiceFlorSDecoderStepReset; } else { instance->decoder.parser_step = NiceFlorSDecoderStepReset; } break; } } /** * Analysis of received data * @param instance Pointer to a SubGhzBlockGeneric* instance * @param file_name Full path to rainbow table the file */ static void subghz_protocol_nice_flor_s_remote_controller( SubGhzBlockGeneric* instance, const char* file_name) { /* * Packet format Nice Flor-s: START-P0-P1-P2-P3-P4-P5-P6-P7-STOP * P0 (4-bit) - button positional code - 1:0x1, 2:0x2, 3:0x4, 4:0x8; * P1 (4-bit) - batch repetition number, calculated by the formula: * P1 = 0xF ^ P0 ^ n; where n changes from 1 to 15, then 0, and then in a circle * key 1: {0xE,0xF,0xC,0xD,0xA,0xB,0x8,0x9,0x6,0x7,0x4,0x5,0x2,0x3,0x0,0x1}; * key 2: {0xD,0xC,0xF,0xE,0x9,0x8,0xB,0xA,0x5,0x4,0x7,0x6,0x1,0x0,0x3,0x2}; * key 3: {0xB,0xA,0x9,0x8,0xF,0xE,0xD,0xC,0x3,0x2,0x1,0x0,0x7,0x6,0x5,0x4}; * key 4: {0x7,0x6,0x5,0x4,0x3,0x2,0x1,0x0,0xF,0xE,0xD,0xC,0xB,0xA,0x9,0x8}; * P2 (4-bit) - part of the serial number, P2 = (K ^ S3) & 0xF; * P3 (byte) - the major part of the encrypted index * P4 (byte) - the low-order part of the encrypted index * P5 (byte) - part of the serial number, P5 = K ^ S2; * P6 (byte) - part of the serial number, P6 = K ^ S1; * P7 (byte) - part of the serial number, P7 = K ^ S0; * K (byte) - depends on P3 and P4, K = Fk(P3, P4); * S3,S2,S1,S0 - serial number of the console 28 bit. * * data => 0x1c5783607f7b3 key serial cnt * decrypt => 0x10436c6820444 => 0x1 0436c682 0444 * */ if(!file_name) { instance->cnt = 0; instance->serial = 0; instance->btn = 0; } else { uint64_t decrypt = subghz_protocol_nice_flor_s_decrypt(instance, file_name); instance->cnt = decrypt & 0xFFFF; instance->serial = (decrypt >> 16) & 0xFFFFFFF; instance->btn = (decrypt >> 48) & 0xF; } } uint8_t subghz_protocol_decoder_nice_flor_s_get_hash_data(void* context) { furi_assert(context); SubGhzProtocolDecoderNiceFlorS* instance = context; return subghz_protocol_blocks_get_hash_data( &instance->decoder, (instance->decoder.decode_count_bit / 8) + 1); } bool subghz_protocol_decoder_nice_flor_s_serialize( void* context, FlipperFormat* flipper_format, uint32_t frequency, FuriHalSubGhzPreset preset) { furi_assert(context); SubGhzProtocolDecoderNiceFlorS* instance = context; return subghz_block_generic_serialize(&instance->generic, flipper_format, frequency, preset); } bool subghz_protocol_decoder_nice_flor_s_deserialize(void* context, FlipperFormat* flipper_format) { furi_assert(context); SubGhzProtocolDecoderNiceFlorS* instance = context; return subghz_block_generic_deserialize(&instance->generic, flipper_format); } void subghz_protocol_decoder_nice_flor_s_get_string(void* context, string_t output) { furi_assert(context); SubGhzProtocolDecoderNiceFlorS* instance = context; subghz_protocol_nice_flor_s_remote_controller( &instance->generic, instance->nice_flor_s_rainbow_table_file_name); uint32_t code_found_hi = instance->generic.data >> 32; uint32_t code_found_lo = instance->generic.data & 0x00000000ffffffff; string_cat_printf( output, "%s %dbit\r\n" "Key:0x%lX%08lX\r\n" "Sn:%05lX\r\n" "Cnt:%04X Btn:%02lX\r\n", instance->generic.protocol_name, instance->generic.data_count_bit, code_found_hi, code_found_lo, instance->generic.serial, instance->generic.cnt, instance->generic.btn); }