Added -m 23900 = BestCrypt v3 Volume Encryption

pull/2559/head
philsmd 4 years ago
parent 3dd89bc63c
commit 8350d4fa3c

@ -0,0 +1,454 @@
/**
* Author......: See docs/credits.txt
* License.....: MIT
*/
//#define NEW_SIMD_CODE
#ifdef KERNEL_STATIC
#include "inc_vendor.h"
#include "inc_types.h"
#include "inc_platform.cl"
#include "inc_common.cl"
#include "inc_hash_sha256.cl"
#include "inc_cipher_aes.cl"
#endif
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
typedef struct bestcrypt_tmp
{
u32 salt_pw_buf[33];
u32 out[8];
} bestcrypt_tmp_t;
typedef struct bestcrypt
{
u32 data[24];
} bestcrypt_t;
KERNEL_FQ void m23900_init (KERN_ATTR_TMPS_ESALT (bestcrypt_tmp_t, bestcrypt_t))
{
const u64 gid = get_global_id (0);
if (gid >= gid_max) return;
const int salt_pw_len = 8 + pws[gid].pw_len;
u32 comb[16];
comb[ 0] = salt_bufs[salt_pos].salt_buf[0];
comb[ 1] = salt_bufs[salt_pos].salt_buf[1];
comb[ 2] = hc_swap32_S (pws[gid].i[ 0]); // in theory BE is faster because it
comb[ 3] = hc_swap32_S (pws[gid].i[ 1]); // avoids several other byte swaps later on
comb[ 4] = hc_swap32_S (pws[gid].i[ 2]);
comb[ 5] = hc_swap32_S (pws[gid].i[ 3]);
comb[ 6] = hc_swap32_S (pws[gid].i[ 4]);
comb[ 7] = hc_swap32_S (pws[gid].i[ 5]);
comb[ 8] = hc_swap32_S (pws[gid].i[ 6]);
comb[ 9] = hc_swap32_S (pws[gid].i[ 7]);
comb[10] = hc_swap32_S (pws[gid].i[ 8]);
comb[11] = hc_swap32_S (pws[gid].i[ 9]);
comb[12] = hc_swap32_S (pws[gid].i[10]);
comb[13] = hc_swap32_S (pws[gid].i[11]);
comb[14] = hc_swap32_S (pws[gid].i[12]);
comb[15] = hc_swap32_S (pws[gid].i[13]);
u32 salt_pw_buf[32 + 1] = { 0 }; // 8 + 56 + 64 = 128 bytes
for (int i = 0; i < 128; i += salt_pw_len)
{
const int idx = i / 4;
const int mod = i % 4;
const int full_len = MIN (salt_pw_len, 128 - i);
const int copy_len = (full_len + 3) / 4; // ceil () + convert to 4-byte block (u32)
for (int j = 0, k = idx; j < copy_len; j++, k++)
{
// salt_pw_buf[k] |= comb[j] >> (mod * 8);
// if (mod) salt_pw_buf[k + 1] |= comb[j] << ((4 - mod) * 8);
switch (mod)
{
case 0:
salt_pw_buf[k + 0] |= comb[j];
break;
case 1:
salt_pw_buf[k + 0] |= comb[j] >> 8;
salt_pw_buf[k + 1] |= comb[j] << 24;
break;
case 2:
salt_pw_buf[k + 0] |= comb[j] >> 16;
salt_pw_buf[k + 1] |= comb[j] << 16;
break;
case 3:
salt_pw_buf[k + 0] |= comb[j] >> 24;
salt_pw_buf[k + 1] |= comb[j] << 8;
break;
}
}
}
#ifdef _unroll
#pragma unroll
#endif
for (int i = 0; i < 33; i++)
{
tmps[gid].salt_pw_buf[i] = salt_pw_buf[i];
}
}
KERNEL_FQ void m23900_loop (KERN_ATTR_TMPS_ESALT (bestcrypt_tmp_t, bestcrypt_t))
{
const u64 gid = get_global_id (0);
if (gid >= gid_max) return;
const int salt_pw_len = 8 + pws[gid].pw_len;
u32 salt_pw_buf[32 + 1]; // 8 + 56 + 64 = 128 bytes
#ifdef _unroll
#pragma unroll
#endif
for (int i = 0; i < 33; i++)
{
salt_pw_buf[i] = tmps[gid].salt_pw_buf[i];
}
u32 tbl[1024] = { 0 }; // 4 KiB lookup table
for (int i = 0; i < 64; i++)
{
const int idx = i / 4;
const int mod = i % 4;
// init:
int k = i * 16;
int l = idx;
// tbl[k] |= salt_pw_buf[l] << (mod * 8);
switch (mod)
{
case 0:
tbl[k] |= salt_pw_buf[l];
break;
case 1:
tbl[k] |= salt_pw_buf[l] << 8;
break;
case 2:
tbl[k] |= salt_pw_buf[l] << 16;
break;
case 3:
tbl[k] |= salt_pw_buf[l] << 24;
break;
}
k += 1;
l += 1;
// loop:
for (int j = 1; j < 16; j++, k++, l++)
{
// if (mod) tbl[k - 1] |= salt_pw_buf[l] >> ((4 - mod) * 8);
// tbl[k] |= salt_pw_buf[l] << (mod * 8);
switch (mod)
{
case 0:
tbl[k - 0] |= salt_pw_buf[l];
break;
case 1:
tbl[k - 0] |= salt_pw_buf[l] << 8;
tbl[k - 1] |= salt_pw_buf[l] >> 24;
break;
case 2:
tbl[k - 0] |= salt_pw_buf[l] << 16;
tbl[k - 1] |= salt_pw_buf[l] >> 16;
break;
case 3:
tbl[k - 0] |= salt_pw_buf[l] << 24;
tbl[k - 1] |= salt_pw_buf[l] >> 8;
break;
}
}
// final:
// if (mod) tbl[k - 1] |= salt_pw_buf[l] >> ((4 - mod) * 8);
switch (mod)
{
case 0:
break;
case 1:
tbl[k - 1] |= salt_pw_buf[l] >> 24;
break;
case 2:
tbl[k - 1] |= salt_pw_buf[l] >> 16;
break;
case 3:
tbl[k - 1] |= salt_pw_buf[l] >> 8;
break;
}
}
u32 digest[8];
digest[0] = SHA256M_A;
digest[1] = SHA256M_B;
digest[2] = SHA256M_C;
digest[3] = SHA256M_D;
digest[4] = SHA256M_E;
digest[5] = SHA256M_F;
digest[6] = SHA256M_G;
digest[7] = SHA256M_H;
for (int i = 0; i < 65536; i += 64)
{
const int idx = (i % salt_pw_len) * 16;
u32 w0[4];
u32 w1[4];
u32 w2[4];
u32 w3[4];
w0[0] = tbl[idx + 0];
w0[1] = tbl[idx + 1];
w0[2] = tbl[idx + 2];
w0[3] = tbl[idx + 3];
w1[0] = tbl[idx + 4];
w1[1] = tbl[idx + 5];
w1[2] = tbl[idx + 6];
w1[3] = tbl[idx + 7];
w2[0] = tbl[idx + 8];
w2[1] = tbl[idx + 9];
w2[2] = tbl[idx + 10];
w2[3] = tbl[idx + 11];
w3[0] = tbl[idx + 12];
w3[1] = tbl[idx + 13];
w3[2] = tbl[idx + 14];
w3[3] = tbl[idx + 15];
sha256_transform (w0, w1, w2, w3, digest);
}
tmps[gid].out[0] = digest[0];
tmps[gid].out[1] = digest[1];
tmps[gid].out[2] = digest[2];
tmps[gid].out[3] = digest[3];
tmps[gid].out[4] = digest[4];
tmps[gid].out[5] = digest[5];
tmps[gid].out[6] = digest[6];
tmps[gid].out[7] = digest[7];
}
KERNEL_FQ void m23900_comp (KERN_ATTR_TMPS_ESALT (bestcrypt_tmp_t, bestcrypt_t))
{
const u64 gid = get_global_id (0);
const u64 lid = get_local_id (0);
const u64 lsz = get_local_size (0);
/**
* aes shared
*/
#ifdef REAL_SHM
LOCAL_VK u32 s_td0[256];
LOCAL_VK u32 s_td1[256];
LOCAL_VK u32 s_td2[256];
LOCAL_VK u32 s_td3[256];
LOCAL_VK u32 s_td4[256];
LOCAL_VK u32 s_te0[256];
LOCAL_VK u32 s_te1[256];
LOCAL_VK u32 s_te2[256];
LOCAL_VK u32 s_te3[256];
LOCAL_VK u32 s_te4[256];
for (u32 i = lid; i < 256; i += lsz)
{
s_td0[i] = td0[i];
s_td1[i] = td1[i];
s_td2[i] = td2[i];
s_td3[i] = td3[i];
s_td4[i] = td4[i];
s_te0[i] = te0[i];
s_te1[i] = te1[i];
s_te2[i] = te2[i];
s_te3[i] = te3[i];
s_te4[i] = te4[i];
}
SYNC_THREADS ();
#else
CONSTANT_AS u32a *s_td0 = td0;
CONSTANT_AS u32a *s_td1 = td1;
CONSTANT_AS u32a *s_td2 = td2;
CONSTANT_AS u32a *s_td3 = td3;
CONSTANT_AS u32a *s_td4 = td4;
CONSTANT_AS u32a *s_te0 = te0;
CONSTANT_AS u32a *s_te1 = te1;
CONSTANT_AS u32a *s_te2 = te2;
CONSTANT_AS u32a *s_te3 = te3;
CONSTANT_AS u32a *s_te4 = te4;
#endif
if (gid >= gid_max) return;
// final transform of sha256:
u32 digest[8];
digest[0] = tmps[gid].out[0];
digest[1] = tmps[gid].out[1];
digest[2] = tmps[gid].out[2];
digest[3] = tmps[gid].out[3];
digest[4] = tmps[gid].out[4];
digest[5] = tmps[gid].out[5];
digest[6] = tmps[gid].out[6];
digest[7] = tmps[gid].out[7];
u32 w0[4];
u32 w1[4];
u32 w2[4];
u32 w3[4];
w0[0] = 0x80000000;
w0[1] = 0;
w0[2] = 0;
w0[3] = 0;
w1[0] = 0;
w1[1] = 0;
w1[2] = 0;
w1[3] = 0;
w2[0] = 0;
w2[1] = 0;
w2[2] = 0;
w2[3] = 0;
w3[0] = 0;
w3[1] = 0;
w3[2] = 0;
w3[3] = 65536 * 8;
sha256_transform (w0, w1, w2, w3, digest);
/**
* AES part
*/
#define KEYLEN 60
u32 ks[KEYLEN];
AES256_set_decrypt_key (ks, digest, s_te0, s_te1, s_te2, s_te3, s_td0, s_td1, s_td2, s_td3);
u32 iv[4] = { 0 };
u32 res[20]; // full would be 24 x u32 (96 bytes)
for (u32 i = 0; i < 20; i += 4) // 96 bytes output would contain the full 32 byte checksum
{
u32 data[4];
data[0] = esalt_bufs[digests_offset].data[i + 0];
data[1] = esalt_bufs[digests_offset].data[i + 1];
data[2] = esalt_bufs[digests_offset].data[i + 2];
data[3] = esalt_bufs[digests_offset].data[i + 3];
u32 out[4];
aes256_decrypt (ks, data, out, s_td0, s_td1, s_td2, s_td3, s_td4);
res[i + 0] = hc_swap32_S (out[0] ^ iv[0]);
res[i + 1] = hc_swap32_S (out[1] ^ iv[1]);
res[i + 2] = hc_swap32_S (out[2] ^ iv[2]);
res[i + 3] = hc_swap32_S (out[3] ^ iv[3]);
iv[0] = data[0];
iv[1] = data[1];
iv[2] = data[2];
iv[3] = data[3];
}
// checksum:
// sha256_ctx_t ctx;
// sha256_init (&ctx);
// sha256_update_swap (&ctx, res, 64);
// sha256_final (&ctx);
digest[0] = SHA256M_A;
digest[1] = SHA256M_B;
digest[2] = SHA256M_C;
digest[3] = SHA256M_D;
digest[4] = SHA256M_E;
digest[5] = SHA256M_F;
digest[6] = SHA256M_G;
digest[7] = SHA256M_H;
w0[0] = res[ 0];
w0[1] = res[ 1];
w0[2] = res[ 2];
w0[3] = res[ 3];
w1[0] = res[ 4];
w1[1] = res[ 5];
w1[2] = res[ 6];
w1[3] = res[ 7];
w2[0] = res[ 8];
w2[1] = res[ 9];
w2[2] = res[10];
w2[3] = res[11];
w3[0] = res[12];
w3[1] = res[13];
w3[2] = res[14];
w3[3] = res[15];
sha256_transform (w0, w1, w2, w3, digest);
w0[0] = 0x80000000;
w0[1] = 0;
w0[2] = 0;
w0[3] = 0;
w1[0] = 0;
w1[1] = 0;
w1[2] = 0;
w1[3] = 0;
w2[0] = 0;
w2[1] = 0;
w2[2] = 0;
w2[3] = 0;
w3[0] = 0;
w3[1] = 0;
w3[2] = 0;
w3[3] = 64 * 8;
sha256_transform (w0, w1, w2, w3, digest);
if ((digest[0] == res[16]) &&
(digest[1] == res[17]) &&
(digest[2] == res[18]) &&
(digest[3] == res[19]))
{
if (atomic_inc (&hashes_shown[digests_offset]) == 0)
{
mark_hash (plains_buf, d_return_buf, salt_pos, digests_cnt, 0, digests_offset + 0, gid, 0, 0, 0);
}
return;
}
}

@ -5,6 +5,7 @@
##
- Added hash-mode: Bitwarden
- Added hash-mode: BestCrypt v3 Volume Encryption
- Added hash-mode: Apple iWork
- Added hash-mode: AxCrypt 2 AES-128
- Added hash-mode: AxCrypt 2 AES-256

@ -253,6 +253,7 @@ NVIDIA GPUs require "NVIDIA Driver" (440.64 or later) and "CUDA Toolkit" (9.0 or
- Android FDE (Samsung DEK)
- Android FDE <= 4.3
- Apple File System (APFS)
- BestCrypt v3 Volume Encryption
- TrueCrypt
- PDF 1.1 - 1.3 (Acrobat 2 - 4)
- PDF 1.1 - 1.3 (Acrobat 2 - 4), collider #1

@ -0,0 +1,273 @@
/**
* Author......: See docs/credits.txt
* License.....: MIT
*/
#include "common.h"
#include "types.h"
#include "modules.h"
#include "bitops.h"
#include "convert.h"
#include "shared.h"
static const u32 ATTACK_EXEC = ATTACK_EXEC_OUTSIDE_KERNEL;
static const u32 DGST_POS0 = 0;
static const u32 DGST_POS1 = 1;
static const u32 DGST_POS2 = 2;
static const u32 DGST_POS3 = 3;
static const u32 DGST_SIZE = DGST_SIZE_4_4;
static const u32 HASH_CATEGORY = HASH_CATEGORY_FDE;
static const char *HASH_NAME = "BestCrypt v3 Volume Encryption";
static const u64 KERN_TYPE = 23900;
static const u32 OPTI_TYPE = OPTI_TYPE_ZERO_BYTE;
static const u64 OPTS_TYPE = OPTS_TYPE_PT_GENERATE_LE
| OPTS_TYPE_ST_HEX;
static const u32 SALT_TYPE = SALT_TYPE_EMBEDDED;
static const char *ST_PASS = "hashcat";
static const char *ST_HASH = "$bcve$3$08$234b8182cee7098b$35c12ef76a1e88175c4c222da3558310a0075bc7a06ecf46746d149c02a81fb8a97637d1103d2e13ddd5deaf982889594b18c12d7ca18a54875c5da4a47f90ae615ab94b8e3ed9e3c793d872a1b5ac35cfdb66c221d6d0853e9ff2e0f4435b43";
u32 module_attack_exec (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ATTACK_EXEC; }
u32 module_dgst_pos0 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS0; }
u32 module_dgst_pos1 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS1; }
u32 module_dgst_pos2 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS2; }
u32 module_dgst_pos3 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS3; }
u32 module_dgst_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_SIZE; }
u32 module_hash_category (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return HASH_CATEGORY; }
const char *module_hash_name (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return HASH_NAME; }
u64 module_kern_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return KERN_TYPE; }
u32 module_opti_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return OPTI_TYPE; }
u64 module_opts_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return OPTS_TYPE; }
u32 module_salt_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return SALT_TYPE; }
const char *module_st_hash (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_HASH; }
const char *module_st_pass (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_PASS; }
typedef struct bestcrypt_tmp
{
u32 salt_pw_buf[33];
u32 out[8];
} bestcrypt_tmp_t;
typedef struct bestcrypt
{
u32 data[24];
} bestcrypt_t;
static const char *SIGNATURE_BESTCRYPT = "$bcve$";
u64 module_tmp_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
{
const u64 tmp_size = (const u64) sizeof (bestcrypt_tmp_t);
return tmp_size;
}
u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
{
const u64 esalt_size = (const u64) sizeof (bestcrypt_t);
return esalt_size;
}
u32 module_pw_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
{
// this overrides the reductions of PW_MAX in case optimized kernel is selected
// IOW, even in optimized kernel mode it support length 56
const u32 pw_max = 56;
return pw_max;
}
int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED void *digest_buf, MAYBE_UNUSED salt_t *salt, MAYBE_UNUSED void *esalt_buf, MAYBE_UNUSED void *hook_salt_buf, MAYBE_UNUSED hashinfo_t *hash_info, const char *line_buf, MAYBE_UNUSED const int line_len)
{
u32 *digest = (u32 *) digest_buf;
bestcrypt_t *bestcrypt = (bestcrypt_t *) esalt_buf;
token_t token;
token.token_cnt = 5;
token.signatures_cnt = 1;
token.signatures_buf[0] = SIGNATURE_BESTCRYPT;
token.len[0] = 6;
token.attr[0] = TOKEN_ATTR_FIXED_LENGTH
| TOKEN_ATTR_VERIFY_SIGNATURE;
token.len_min[1] = 1;
token.len_max[1] = 1;
token.sep[1] = '$';
token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_DIGIT;
token.len_min[2] = 2;
token.len_max[2] = 2;
token.sep[2] = '$';
token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
token.len_min[3] = 16;
token.len_max[3] = 16;
token.sep[3] = '$';
token.attr[3] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
token.len[4] = 192;
token.attr[4] = TOKEN_ATTR_FIXED_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
const u8 *format_type_pos = token.buf[1];
if (format_type_pos[0] != '3') return (PARSER_SALT_VALUE);
const u8 *crypto_type_pos = token.buf[2];
if (crypto_type_pos[0] != '0') return (PARSER_SALT_VALUE);
if (crypto_type_pos[1] != '8') return (PARSER_SALT_VALUE);
salt->salt_iter = 1;
// salt
const u8 *salt_pos = token.buf[3];
const int salt_len = token.len[3];
const bool parse_rc = generic_salt_decode (hashconfig, salt_pos, salt_len, (u8 *) salt->salt_buf, (int *) &salt->salt_len);
if (parse_rc == false) return (PARSER_SALT_LENGTH);
salt->salt_buf[0] = salt->salt_buf[0];
salt->salt_buf[1] = salt->salt_buf[1];
salt->salt_buf[0] = byte_swap_32 (salt->salt_buf[0]);
salt->salt_buf[1] = byte_swap_32 (salt->salt_buf[1]);
// data
const u8 *data_pos = token.buf[4];
const int data_len = token.len[4];
hex_decode (data_pos, data_len, (u8 *) bestcrypt->data);
// fake digest
digest[0] = bestcrypt->data[16]; // the encrypted checksum
digest[1] = bestcrypt->data[17];
digest[2] = bestcrypt->data[18];
digest[3] = bestcrypt->data[19];
return (PARSER_OK);
}
int module_hash_encode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const void *digest_buf, MAYBE_UNUSED const salt_t *salt, MAYBE_UNUSED const void *esalt_buf, MAYBE_UNUSED const void *hook_salt_buf, MAYBE_UNUSED const hashinfo_t *hash_info, char *line_buf, MAYBE_UNUSED const int line_size)
{
const bestcrypt_t *bestcrypt = (const bestcrypt_t *) esalt_buf;
// salt
u32 tmp_salt[4] = { 0 };
tmp_salt[0] = byte_swap_32 (salt->salt_buf[0]);
tmp_salt[1] = byte_swap_32 (salt->salt_buf[1]);
char salt_hex[17] = { 0 };
generic_salt_encode (hashconfig, (const u8 *) tmp_salt, (const int) salt->salt_len, (u8 *) salt_hex);
// data
u8 data_hex[193] = { 0 };
hex_encode ((u8 *) bestcrypt->data, 96, data_hex);
int out_len = snprintf (line_buf, line_size, "%s3$08$%s$%s",
SIGNATURE_BESTCRYPT,
salt_hex,
data_hex
);
return out_len;
}
void module_init (module_ctx_t *module_ctx)
{
module_ctx->module_context_size = MODULE_CONTEXT_SIZE_CURRENT;
module_ctx->module_interface_version = MODULE_INTERFACE_VERSION_CURRENT;
module_ctx->module_attack_exec = module_attack_exec;
module_ctx->module_benchmark_esalt = MODULE_DEFAULT;
module_ctx->module_benchmark_hook_salt = MODULE_DEFAULT;
module_ctx->module_benchmark_mask = MODULE_DEFAULT;
module_ctx->module_benchmark_salt = MODULE_DEFAULT;
module_ctx->module_build_plain_postprocess = MODULE_DEFAULT;
module_ctx->module_deep_comp_kernel = MODULE_DEFAULT;
module_ctx->module_dgst_pos0 = module_dgst_pos0;
module_ctx->module_dgst_pos1 = module_dgst_pos1;
module_ctx->module_dgst_pos2 = module_dgst_pos2;
module_ctx->module_dgst_pos3 = module_dgst_pos3;
module_ctx->module_dgst_size = module_dgst_size;
module_ctx->module_dictstat_disable = MODULE_DEFAULT;
module_ctx->module_esalt_size = module_esalt_size;
module_ctx->module_extra_buffer_size = MODULE_DEFAULT;
module_ctx->module_extra_tmp_size = MODULE_DEFAULT;
module_ctx->module_forced_outfile_format = MODULE_DEFAULT;
module_ctx->module_hash_binary_count = MODULE_DEFAULT;
module_ctx->module_hash_binary_parse = MODULE_DEFAULT;
module_ctx->module_hash_binary_save = MODULE_DEFAULT;
module_ctx->module_hash_decode_potfile = MODULE_DEFAULT;
module_ctx->module_hash_decode_zero_hash = MODULE_DEFAULT;
module_ctx->module_hash_decode = module_hash_decode;
module_ctx->module_hash_encode_status = MODULE_DEFAULT;
module_ctx->module_hash_encode_potfile = MODULE_DEFAULT;
module_ctx->module_hash_encode = module_hash_encode;
module_ctx->module_hash_init_selftest = MODULE_DEFAULT;
module_ctx->module_hash_mode = MODULE_DEFAULT;
module_ctx->module_hash_category = module_hash_category;
module_ctx->module_hash_name = module_hash_name;
module_ctx->module_hashes_count_min = MODULE_DEFAULT;
module_ctx->module_hashes_count_max = MODULE_DEFAULT;
module_ctx->module_hlfmt_disable = MODULE_DEFAULT;
module_ctx->module_hook_extra_param_size = MODULE_DEFAULT;
module_ctx->module_hook_extra_param_init = MODULE_DEFAULT;
module_ctx->module_hook_extra_param_term = MODULE_DEFAULT;
module_ctx->module_hook12 = MODULE_DEFAULT;
module_ctx->module_hook23 = MODULE_DEFAULT;
module_ctx->module_hook_salt_size = MODULE_DEFAULT;
module_ctx->module_hook_size = MODULE_DEFAULT;
module_ctx->module_jit_build_options = MODULE_DEFAULT;
module_ctx->module_jit_cache_disable = MODULE_DEFAULT;
module_ctx->module_kernel_accel_max = MODULE_DEFAULT;
module_ctx->module_kernel_accel_min = MODULE_DEFAULT;
module_ctx->module_kernel_loops_max = MODULE_DEFAULT;
module_ctx->module_kernel_loops_min = MODULE_DEFAULT;
module_ctx->module_kernel_threads_max = MODULE_DEFAULT;
module_ctx->module_kernel_threads_min = MODULE_DEFAULT;
module_ctx->module_kern_type = module_kern_type;
module_ctx->module_kern_type_dynamic = MODULE_DEFAULT;
module_ctx->module_opti_type = module_opti_type;
module_ctx->module_opts_type = module_opts_type;
module_ctx->module_outfile_check_disable = MODULE_DEFAULT;
module_ctx->module_outfile_check_nocomp = MODULE_DEFAULT;
module_ctx->module_potfile_custom_check = MODULE_DEFAULT;
module_ctx->module_potfile_disable = MODULE_DEFAULT;
module_ctx->module_potfile_keep_all_hashes = MODULE_DEFAULT;
module_ctx->module_pwdump_column = MODULE_DEFAULT;
module_ctx->module_pw_max = module_pw_max;
module_ctx->module_pw_min = MODULE_DEFAULT;
module_ctx->module_salt_max = MODULE_DEFAULT;
module_ctx->module_salt_min = MODULE_DEFAULT;
module_ctx->module_salt_type = module_salt_type;
module_ctx->module_separator = MODULE_DEFAULT;
module_ctx->module_st_hash = module_st_hash;
module_ctx->module_st_pass = module_st_pass;
module_ctx->module_tmp_size = module_tmp_size;
module_ctx->module_unstable_warning = MODULE_DEFAULT;
module_ctx->module_warmup_disable = MODULE_DEFAULT;
}

@ -0,0 +1,125 @@
#!/usr/bin/env perl
##
## Author......: See docs/credits.txt
## License.....: MIT
##
use strict;
use warnings;
use Digest::SHA qw (sha256);
use Crypt::CBC;
sub module_constraints { [[0, 56], [8, 8], [-1, -1], [-1, -1], [-1, -1]] }
my $BUF_SIZE = 0x10000;
sub module_generate_hash
{
my $word = shift;
my $salt = shift;
my $data = shift;
my $comb = $salt . $word;
my $len = length ($comb);
my $buf = "";
for (my $i = 0; $i < $BUF_SIZE; $i += $len)
{
$buf .= $comb;
}
# IMPORTANT: we need to truncate the buffer to $BUF_SIZE:
$buf = substr ($buf, 0, $BUF_SIZE);
my $key = sha256 ($buf);
my $aes = Crypt::CBC->new ({
cipher => "Crypt::Rijndael",
key => $key,
iv => "\x00" x 16,
keysize => 32,
literal_key => 1,
header => "none",
padding => "none"
});
if (defined ($data)) # decrypt
{
my $plain_text = $aes->decrypt ($data);
my $part1 = substr ($plain_text, 0, 64);
my $part2 = substr ($plain_text, 64, 32);
my $hash = sha256 ($part1);
if ($hash ne $part2) # wrong => fake the data
{
$data = "\x00" x length ($data); # 64 + 32 = 96
}
}
else # encrypt
{
$data = random_bytes (64);
my $hash = sha256 ($data);
$data = $aes->encrypt ($data . $hash);
}
return sprintf ("\$bcve\$3\$08\$%s\$%s", unpack ("H*", $salt), unpack ("H*", $data));
}
sub module_verify_hash
{
my $line = shift;
my $idx1 = index ($line, ':');
return if ($idx1 < 1);
my $hash = substr ($line, 0, $idx1);
my $word = substr ($line, $idx1 + 1);
return if (substr ($hash, 0, 8) ne "\$bcve\$3\$");
$idx1 = index ($hash, '$', 8);
return if ($idx1 < 1);
# crypto type
my $crypto_type = substr ($hash, 8, $idx1 - 8);
return unless ($crypto_type eq "08");
# salt
my $idx2 = index ($hash, '$', $idx1 + 1);
my $salt = substr ($hash, $idx1 + 1, $idx2 - $idx1 - 1);
return unless ($salt =~ m/^[0-9a-fA-F]+$/);
# data
my $data = substr ($hash, $idx2 + 1);
return unless ($data =~ m/^[0-9a-fA-F]+$/);
# convert to hex:
$salt = pack ("H*", $salt);
$data = pack ("H*", $data);
my $word_packed = pack_if_HEX_notation ($word);
my $new_hash = module_generate_hash ($word_packed, $salt, $data);
return ($new_hash, $word);
}
1;
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