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unleashed-firmware/lib/subghz/protocols/nice_flor_s.c
Skorpionm 4da6eba395
[FL-2706, FL-2709] SubGhz: checking saved key files for length (#1485) 
* [FL-2706] SubGhz: checking saved key files for length
* SubGhz: fix RAW file upload error
* [FL-2709] GubGhz: RAW screen fix

Co-authored-by: あく <alleteam@gmail.com>
2022-08-01 21:24:21 +09:00

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#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 "SubGhzProtocoNiceFlorS"
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;
};
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 = NULL,
.free = NULL,
.deserialize = NULL,
.stop = NULL,
.yield = NULL,
};
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,
.decoder = &subghz_protocol_nice_flor_s_decoder,
.encoder = &subghz_protocol_nice_flor_s_encoder,
};
/**
* 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,
SubGhzPresetDefinition* preset) {
furi_assert(context);
SubGhzProtocolDecoderNiceFlorS* instance = context;
return subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
}
bool subghz_protocol_decoder_nice_flor_s_deserialize(void* context, FlipperFormat* flipper_format) {
furi_assert(context);
SubGhzProtocolDecoderNiceFlorS* instance = context;
bool ret = false;
do {
if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
break;
}
if(instance->generic.data_count_bit !=
subghz_protocol_nice_flor_s_const.min_count_bit_for_found) {
FURI_LOG_E(TAG, "Wrong number of bits in key");
break;
}
ret = true;
} while(false);
return ret;
}
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);
}
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