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update

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PhaseLoop 2023-10-16 19:19:30 +00:00
commit 4003ad72fe
4 changed files with 56 additions and 20 deletions
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6
armsrc/em4x50.c
View file

@ -643,8 +643,12 @@ static bool brute(em4x50_data_t *etd, uint32_t *pwd) {
bf_generator_init(&ctx, etd->bruteforce_mode, BF_KEY_SIZE_32);
if (etd->bruteforce_mode == BF_MODE_CHARSET)
if (etd->bruteforce_mode == BF_MODE_CHARSET){
bf_generator_set_charset(&ctx, etd->bruteforce_charset);
} else if (etd->bruteforce_mode == BF_MODE_RANGE){
ctx.range_low = etd->password1;
ctx.range_high = etd->password2;
}
while ((generator_ret = bf_generate(&ctx)) == BF_GENERATOR_NEXT) {
*pwd = bf_get_key32(&ctx);

13
client/src/cmdlfem4x50.c
View file

@ -354,11 +354,12 @@ int CmdEM4x50Brute(const char *Cmd) {
"lf em 4x50 brute --mode range --begin 12330000 --end 12340000 -> tries pwds from 0x12330000 to 0x12340000\n"
"lf em 4x50 brute --mode charset --digits --uppercase -> tries all combinations of ASCII codes for digits and uppercase letters\n"
"lf em 4x50 brute --mode smart -> enable 'smart' pattern key cracking\n"
);
void *argtable[] = {
arg_param_begin,
arg_str1(NULL, "mode", "<str>", "Bruteforce mode (range|charset)"),
arg_str1(NULL, "mode", "<str>", "Bruteforce mode (range|charset|smart)"),
arg_str0(NULL, "begin", "<hex>", "Range mode - start of the key range"),
arg_str0(NULL, "end", "<hex>", "Range mode - end of the key range"),
arg_lit0(NULL, "digits", "Charset mode - include ASCII codes for digits"),
@ -380,7 +381,10 @@ int CmdEM4x50Brute(const char *Cmd) {
etd.bruteforce_mode = BF_MODE_RANGE;
} else if (strcmp(mode, "charset") == 0) {
etd.bruteforce_mode = BF_MODE_CHARSET;
} else {
} else if (strcmp(mode, "smart") == 0){
etd.bruteforce_mode = BF_MODE_SMART;
} else
{
PrintAndLogEx(FAILED, "Unknown bruteforce mode: %s", mode);
return PM3_EINVARG;
}
@ -458,7 +462,10 @@ int CmdEM4x50Brute(const char *Cmd) {
dur_s -= dur_h * 3600 + dur_m * 60;
PrintAndLogEx(INFO, "Estimated duration: %ih %im %is", dur_h, dur_m, dur_s);
if ( no_iter > 0 )
PrintAndLogEx(INFO, "Estimated duration: %ih %im %is", dur_h, dur_m, dur_s);
else
PrintAndLogEx(INFO, "Estimated duration: unknown");
// start
clearCommandBuffer();

55
common/bruteforce.c
View file

@ -29,15 +29,15 @@ uint8_t charset_uppercase[] = {
};
smart_generator_t *smart_generators[] = {
smart_generator_test1,
smart_generator_test2,
smart_generator_byte_repeat,
NULL
};
void bf_generator_init(generator_context_t *ctx, uint8_t mode, uint8_t key_size) {
void bf_generator_init(generator_context_t *ctx, uint8_t mode, uint8_t key_length) {
memset(ctx, 0, sizeof(generator_context_t));
ctx->mode = mode;
ctx->key_length = key_length;
}
int bf_generator_set_charset(generator_context_t *ctx, uint8_t charsets) {
@ -65,7 +65,10 @@ int bf_generate(generator_context_t *ctx) {
return _bf_generate_mode_range(ctx);
case BF_MODE_CHARSET:
return _bf_generate_mode_charset(ctx);
}
case BF_MODE_SMART:
return _bf_generate_mode_smart(ctx);
}
return BF_GENERATOR_ERROR;
}
@ -112,6 +115,14 @@ uint64_t bf_get_key48(generator_context_t *ctx){
return ctx->current_key & 0xFFFFFFFFFFFF;
}
void bf_generator_clear(generator_context_t *ctx){
ctx->flag1 = 0;
ctx->flag2 = 0;
ctx->flag3 = 0;
ctx->counter1 = 0;
ctx->counter2 = 0;
}
int _bf_generate_mode_range(generator_context_t *ctx) {
if (ctx->key_length != BF_KEY_SIZE_32 && ctx->key_length != BF_KEY_SIZE_48)
@ -135,35 +146,35 @@ int _bf_generate_mode_range(generator_context_t *ctx) {
int _bf_generate_mode_charset(generator_context_t *ctx) {
if (ctx->key_length != BF_KEY_SIZE_32 && ctx->key_length != BF_KEY_SIZE_48)
if (ctx->key_length != BF_KEY_SIZE_32 && ctx->key_length != BF_KEY_SIZE_48){
return BF_GENERATOR_ERROR;
}
if (ctx->flag1)
return BF_GENERATOR_END;
uint8_t key_byte = 0;
ctx->current_key = 0;
for (key_byte = 0; key_byte < ctx->key_length;key_byte++){
ctx->current_key |= ctx->charset[ctx->pos[key_byte]] << ((ctx->key_length - key_byte) - 1 * 8);
for (key_byte = 0; key_byte < ctx->key_length; key_byte++)
{
ctx->current_key |= (uint64_t) ctx->charset[ctx->pos[key_byte]] << ((ctx->key_length - key_byte - 1) * 8);
}
if (bf_array_increment(ctx->pos, ctx->key_length, ctx->charset_length) == -1)
// set flag1 to emit value last time and end generation
// set flag1 to emit value last time and end generation on next call
ctx->flag1 = true;
return BF_GENERATOR_NEXT;
}
int bf_generate_mode_smart(generator_context_t *ctx){
int _bf_generate_mode_smart(generator_context_t *ctx){
int ret;
while(1){
if (smart_generators[ctx->smart_mode_stage] == NULL)
return BF_GENERATOR_END;
return BF_GENERATOR_END;
ret = smart_generators[ctx->smart_mode_stage](ctx);
@ -174,14 +185,28 @@ int bf_generate_mode_smart(generator_context_t *ctx){
return ret;
case BF_GENERATOR_END:
ctx->smart_mode_stage++;
bf_generator_clear(ctx);
continue;
}
}
}
int smart_generator_test1(generator_context_t *ctx){
return 0;
int smart_generator_byte_repeat(generator_context_t *ctx){
// key consists of repeated single byte
uint32_t current_byte = ctx->counter1;
if (current_byte > 0xFF)
return BF_GENERATOR_END;
ctx->current_key = 0;
for (uint8_t key_byte = 0; key_byte < ctx->key_length;key_byte++){
ctx->current_key |= (uint64_t)current_byte << ((ctx->key_length - key_byte - 1) * 8);
}
ctx->counter1++;
return BF_GENERATOR_NEXT;
}
int smart_generator_test2(generator_context_t *ctx){
return 0;

2
common/bruteforce.h
View file

@ -95,7 +95,7 @@ typedef int (smart_generator_t)(generator_context_t *ctx);
int bf_generate_mode_smart(generator_context_t *ctx);
int smart_generator_test1(generator_context_t *ctx);
int smart_generator_byte_repeat(generator_context_t *ctx);
int smart_generator_test2(generator_context_t *ctx);
extern smart_generator_t *smart_generators[]; // array of smart cracking functions