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cpu_rt_functions.c
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cpu_rt_functions.c
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/*
* Rainbow Crackalack: cpu_rt_functions.c
* Copyright (C) 2018-2019 Joe Testa <jtesta@positronsecurity.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms version 3 of the GNU General Public License as
* published by the Free Software Foundation.
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include "cpu_rt_functions.h"
#include "shared.h"
uint64_t fill_plaintext_space_table(unsigned int charset_len, unsigned int plaintext_len_min, unsigned int plaintext_len_max, uint64_t *plaintext_space_up_to_index) {
uint64_t n = 1;
int i;
plaintext_space_up_to_index[0] = 0;
for (i = 1; i <= plaintext_len_max; i++) {
n = n * charset_len;
if (i < plaintext_len_min)
plaintext_space_up_to_index[i] = 0;
else
plaintext_space_up_to_index[i] = plaintext_space_up_to_index[i - 1] + n;
}
return plaintext_space_up_to_index[plaintext_len_max];
}
uint64_t hash_to_index(unsigned char *hash_value, unsigned int hash_len, unsigned int reduction_offset, uint64_t plaintext_space_total, unsigned int pos) {
uint64_t ret = hash_value[7];
ret <<= 8;
ret |= hash_value[6];
ret <<= 8;
ret |= hash_value[5];
ret <<= 8;
ret |= hash_value[4];
ret <<= 8;
ret |= hash_value[3];
ret <<= 8;
ret |= hash_value[2];
ret <<= 8;
ret |= hash_value[1];
ret <<= 8;
ret |= hash_value[0];
return (ret + reduction_offset + pos) % plaintext_space_total;
}
void index_to_plaintext(uint64_t index, char *charset, unsigned int charset_len, unsigned int plaintext_len_min, unsigned int plaintext_len_max, uint64_t *plaintext_space_up_to_index, char *plaintext, unsigned int *plaintext_len) {
int i;
uint64_t index_x;
for (i = plaintext_len_max - 1; i >= plaintext_len_min - 1; i--) {
if (index >= plaintext_space_up_to_index[i]) {
*plaintext_len = i + 1;
if (*plaintext_len >= MAX_PLAINTEXT_LEN)
return;
plaintext[*plaintext_len] = '\0';
break;
}
}
index_x = index - plaintext_space_up_to_index[*plaintext_len - 1];
for (i = *plaintext_len - 1; i >= 0; i--) {
plaintext[i] = charset[index_x % charset_len];
index_x = index_x / charset_len;
}
return;
}
uint64_t generate_rainbow_chain(
unsigned int hash_type,
char *charset,
unsigned int charset_len,
unsigned int plaintext_len_min,
unsigned int plaintext_len_max,
unsigned int reduction_offset,
unsigned int chain_len,
uint64_t start,
uint64_t *plaintext_space_up_to_index,
uint64_t plaintext_space_total,
char *plaintext,
unsigned int *plaintext_len,
unsigned char *hash,
unsigned int *hash_len) {
uint64_t index = start;
unsigned int pos = 0;
if (hash_type != HASH_NTLM)
fprintf(stderr, "\n\tWARNING: only NTLM hashes are currently supported!\n\n");
for (; pos < chain_len - 1; pos++) {
index_to_plaintext(index, charset, charset_len, plaintext_len_min, plaintext_len_max, plaintext_space_up_to_index, plaintext, plaintext_len);
ntlm_hash(plaintext, *plaintext_len, hash);
index = hash_to_index(hash, *hash_len, reduction_offset, plaintext_space_total, pos);
}
return index;
}
/* Calculates the NTLM hash on the specified plaintext. The result is stored in the hash
* argument, which must be at least 16 bytes in size. */
void ntlm_hash(char *plaintext, unsigned int plaintext_len, unsigned char *hash) {
unsigned int key[16] = {0};
unsigned int output[4];
int i = 0;
if (plaintext_len > 27) {
plaintext[27] = 0;
plaintext_len = 27;
}
for (; i < (plaintext_len / 2); i++)
key[i] = plaintext[i * 2] | (plaintext[(i * 2) + 1] << 16);
if ((plaintext_len % 2) == 1)
key[i] = plaintext[plaintext_len - 1] | 0x800000;
else
key[i] = 0x80;
key[14] = plaintext_len << 4;
md4_encrypt(output, key);
i = 0;
hash[i++] = ((output[0] >> 0) & 0xff);
hash[i++] = ((output[0] >> 8) & 0xff);
hash[i++] = ((output[0] >> 16) & 0xff);
hash[i++] = ((output[0] >> 24) & 0xff);
hash[i++] = ((output[1] >> 0) & 0xff);
hash[i++] = ((output[1] >> 8) & 0xff);
hash[i++] = ((output[1] >> 16) & 0xff);
hash[i++] = ((output[1] >> 24) & 0xff);
hash[i++] = ((output[2] >> 0) & 0xff);
hash[i++] = ((output[2] >> 8) & 0xff);
hash[i++] = ((output[2] >> 16) & 0xff);
hash[i++] = ((output[2] >> 24) & 0xff);
hash[i++] = ((output[3] >> 0) & 0xff);
hash[i++] = ((output[3] >> 8) & 0xff);
hash[i++] = ((output[3] >> 16) & 0xff);
hash[i++] = ((output[3] >> 24) & 0xff);
}
/* The below copyright notice applies to the md4_encrypt() function only. */
/*
* MD4 OpenCL kernel based on Solar Designer's MD4 algorithm implementation at:
* http://openwall.info/wiki/people/solar/software/public-domain-source-code/md4
* This code is in public domain.
*
* This software is Copyright (c) 2010, Dhiru Kholia <dhiru.kholia at gmail.com>
* and Copyright (c) 2012, magnum
* and Copyright (c) 2015, Sayantan Datta <std2048@gmail.com>
* and it is hereby released to the general public under the following terms:
* Redistribution and use in source and binary forms, with or without modification,
* are permitted.
*
* Useful References:
* 1 nt_opencl_kernel.c (written by Alain Espinosa <alainesp at gmail.com>)
* 2. http://tools.ietf.org/html/rfc1320
* 3. http://en.wikipedia.org/wiki/MD4
*/
#define F(x, y, z) (z ^ (x & (y ^ z)))
#define G(x, y, z) (((x) & ((y) | (z))) | ((y) & (z)))
#define H(x, y, z) (((x) ^ (y)) ^ (z))
#define H2(x, y, z) ((x) ^ ((y) ^ (z)))
/* The MD4 transformation for all three rounds. */
#define STEP(f, a, b, c, d, x, s) \
(a) += f((b), (c), (d)) + (x); \
(a) = ((a << s) | (a >> (32 - s)))
//(a) = rotate((a), (uint)(s)) //(a) = ((a << s) | (a >> (32 - s)))
void md4_encrypt(unsigned int *hash, unsigned int *W)
{
hash[0] = 0x67452301;
hash[1] = 0xefcdab89;
hash[2] = 0x98badcfe;
hash[3] = 0x10325476;
/* Round 1 */
STEP(F, hash[0], hash[1], hash[2], hash[3], W[0], 3);
STEP(F, hash[3], hash[0], hash[1], hash[2], W[1], 7);
STEP(F, hash[2], hash[3], hash[0], hash[1], W[2], 11);
STEP(F, hash[1], hash[2], hash[3], hash[0], W[3], 19);
STEP(F, hash[0], hash[1], hash[2], hash[3], W[4], 3);
STEP(F, hash[3], hash[0], hash[1], hash[2], W[5], 7);
STEP(F, hash[2], hash[3], hash[0], hash[1], W[6], 11);
STEP(F, hash[1], hash[2], hash[3], hash[0], W[7], 19);
STEP(F, hash[0], hash[1], hash[2], hash[3], W[8], 3);
STEP(F, hash[3], hash[0], hash[1], hash[2], W[9], 7);
STEP(F, hash[2], hash[3], hash[0], hash[1], W[10], 11);
STEP(F, hash[1], hash[2], hash[3], hash[0], W[11], 19);
STEP(F, hash[0], hash[1], hash[2], hash[3], W[12], 3);
STEP(F, hash[3], hash[0], hash[1], hash[2], W[13], 7);
STEP(F, hash[2], hash[3], hash[0], hash[1], W[14], 11);
STEP(F, hash[1], hash[2], hash[3], hash[0], W[15], 19);
/* Round 2 */
STEP(G, hash[0], hash[1], hash[2], hash[3], W[0] + 0x5a827999, 3);
STEP(G, hash[3], hash[0], hash[1], hash[2], W[4] + 0x5a827999, 5);
STEP(G, hash[2], hash[3], hash[0], hash[1], W[8] + 0x5a827999, 9);
STEP(G, hash[1], hash[2], hash[3], hash[0], W[12] + 0x5a827999, 13);
STEP(G, hash[0], hash[1], hash[2], hash[3], W[1] + 0x5a827999, 3);
STEP(G, hash[3], hash[0], hash[1], hash[2], W[5] + 0x5a827999, 5);
STEP(G, hash[2], hash[3], hash[0], hash[1], W[9] + 0x5a827999, 9);
STEP(G, hash[1], hash[2], hash[3], hash[0], W[13] + 0x5a827999, 13);
STEP(G, hash[0], hash[1], hash[2], hash[3], W[2] + 0x5a827999, 3);
STEP(G, hash[3], hash[0], hash[1], hash[2], W[6] + 0x5a827999, 5);
STEP(G, hash[2], hash[3], hash[0], hash[1], W[10] + 0x5a827999, 9);
STEP(G, hash[1], hash[2], hash[3], hash[0], W[14] + 0x5a827999, 13);
STEP(G, hash[0], hash[1], hash[2], hash[3], W[3] + 0x5a827999, 3);
STEP(G, hash[3], hash[0], hash[1], hash[2], W[7] + 0x5a827999, 5);
STEP(G, hash[2], hash[3], hash[0], hash[1], W[11] + 0x5a827999, 9);
STEP(G, hash[1], hash[2], hash[3], hash[0], W[15] + 0x5a827999, 13);
/* Round 3 */
STEP(H, hash[0], hash[1], hash[2], hash[3], W[0] + 0x6ed9eba1, 3);
STEP(H2, hash[3], hash[0], hash[1], hash[2], W[8] + 0x6ed9eba1, 9);
STEP(H, hash[2], hash[3], hash[0], hash[1], W[4] + 0x6ed9eba1, 11);
STEP(H2, hash[1], hash[2], hash[3], hash[0], W[12] + 0x6ed9eba1, 15);
STEP(H, hash[0], hash[1], hash[2], hash[3], W[2] + 0x6ed9eba1, 3);
STEP(H2, hash[3], hash[0], hash[1], hash[2], W[10] + 0x6ed9eba1, 9);
STEP(H, hash[2], hash[3], hash[0], hash[1], W[6] + 0x6ed9eba1, 11);
STEP(H2, hash[1], hash[2], hash[3], hash[0], W[14] + 0x6ed9eba1, 15);
STEP(H, hash[0], hash[1], hash[2], hash[3], W[1] + 0x6ed9eba1, 3);
STEP(H2, hash[3], hash[0], hash[1], hash[2], W[9] + 0x6ed9eba1, 9);
STEP(H, hash[2], hash[3], hash[0], hash[1], W[5] + 0x6ed9eba1, 11);
STEP(H2, hash[1], hash[2], hash[3], hash[0], W[13] + 0x6ed9eba1, 15);
STEP(H, hash[0], hash[1], hash[2], hash[3], W[3] + 0x6ed9eba1, 3);
STEP(H2, hash[3], hash[0], hash[1], hash[2], W[11] + 0x6ed9eba1, 9);
STEP(H, hash[2], hash[3], hash[0], hash[1], W[7] + 0x6ed9eba1, 11);
STEP(H2, hash[1], hash[2], hash[3], hash[0], W[15] + 0x6ed9eba1, 15);
hash[0] = hash[0] + 0x67452301;
hash[1] = hash[1] + 0xefcdab89;
hash[2] = hash[2] + 0x98badcfe;
hash[3] = hash[3] + 0x10325476;
}