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add white cloner pwdgen algo (thanks to @paleopterix!)

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This commit is contained in:
iceman1001 2020-09-19 11:08:01 +02:00
commit 1aa9600048
4 changed files with 35 additions and 1 deletions
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12
common/commonutil.c
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@ -142,3 +142,15 @@ void htole24(uint32_t val, uint8_t data[3]) {
data[2] = (uint8_t)(val >> 16);
}
// ROL on u32
uint32_t rotl(uint32_t a, uint8_t n) {
n &= 31;
return (a << n) | (a >> (32 - n));
}
// ROR on u32
uint32_t rotr(uint32_t a, uint8_t n) {
n &= 31;
return (a >> n) | (a << (32 - n));
}

4
common/commonutil.h
View file

@ -51,9 +51,13 @@ uint16_t reflect16(uint16_t b); // dedicated 16bit reversal
void num_to_bytes(uint64_t n, size_t len, uint8_t *dest);
uint64_t bytes_to_num(uint8_t *src, size_t len);
// rotate left byte array
void rol(uint8_t *data, const size_t len);
void lsl(uint8_t *data, size_t len);
uint32_t le24toh(uint8_t data[3]);
void htole24(uint32_t val, uint8_t data[3]);
// rol on a u32
uint32_t rotl(uint32_t a, uint8_t n);
uint32_t rotr(uint32_t a, uint8_t n);
#endif

18
common/generator.c
View file

@ -414,12 +414,21 @@ int mfc_algo_sky_all(uint8_t *uid, uint8_t *keys) {
return PM3_SUCCESS;
}
// LF T55x7 White gun cloner algo
uint32_t lf_t55xx_white_pwdgen(uint32_t id) {
uint32_t r1 = rotl(id & 0x000000ec, 8);
uint32_t r2 = rotl(id & 0x86000000, 16);
uint32_t pwd = 0x10303;
pwd += ((id & 0x86ee00ec) ^ r1 ^ r2 );
return pwd;
}
//------------------------------------
// Self tests
//------------------------------------
int generator_selftest(void) {
#define NUM_OF_TEST 5
#define NUM_OF_TEST 6
PrintAndLogEx(INFO, "PWD / KEY generator selftest");
PrintAndLogEx(INFO, "----------------------------");
@ -468,6 +477,13 @@ int generator_selftest(void) {
testresult++;
PrintAndLogEx(success ? SUCCESS : WARNING, "UID | %s | %"PRIx64" - %s", sprint_hex(uid6, 4), key6, success ? "OK" : "->82C7E64BC565<--");
uint32_t lf_id = lf_t55xx_white_pwdgen(0x00000080);
success = (lf_id = 0x00018383);
if (success)
testresult++;
PrintAndLogEx(success ? SUCCESS : WARNING, "ID | 0x00000080 | %08"PRIx32 " - %s", lf_id, success ? "OK" : "->00018383<--");
PrintAndLogEx(SUCCESS, "------------------- Selftest %s", (testresult == NUM_OF_TEST) ? "OK" : "fail");
return PM3_SUCCESS;
}

2
common/generator.h
View file

@ -41,5 +41,7 @@ int mfc_algo_di_all(uint8_t *uid, uint8_t *keys);
int mfc_algo_sky_one(uint8_t *uid, uint8_t sector, uint8_t keytype, uint64_t *key);
int mfc_algo_sky_all(uint8_t *uid, uint8_t *keys);
uint32_t lf_t55xx_white_pwdgen(uint32_t id);
int generator_selftest(void);
#endif