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hashcat/OpenCL/m18200_a0-pure.cl

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/**
* Author......: See docs/credits.txt
* License.....: MIT
*/
//shared mem too small
//#define NEW_SIMD_CODE
#ifdef KERNEL_STATIC
#include M2S(INCLUDE_PATH/inc_vendor.h)
#include M2S(INCLUDE_PATH/inc_types.h)
#include M2S(INCLUDE_PATH/inc_platform.cl)
#include M2S(INCLUDE_PATH/inc_common.cl)
#include M2S(INCLUDE_PATH/inc_rp.h)
#include M2S(INCLUDE_PATH/inc_rp.cl)
#include M2S(INCLUDE_PATH/inc_hash_md4.cl)
#include M2S(INCLUDE_PATH/inc_hash_md5.cl)
#include M2S(INCLUDE_PATH/inc_cipher_rc4.cl)
#endif
typedef struct krb5asrep
{
u32 account_info[512];
u32 checksum[4];
u32 edata2[5120];
u32 edata2_len;
u32 format;
} krb5asrep_t;
DECLSPEC int decrypt_and_check (LOCAL_AS u32 *S, PRIVATE_AS u32 *data, GLOBAL_AS const u32 *edata2, const u32 edata2_len, PRIVATE_AS const u32 *K2, PRIVATE_AS const u32 *checksum, const u64 lid)
{
rc4_init_128 (S, data, lid);
u32 out0[4];
/*
8 first bytes are nonce, then ASN1 structs (DER encoding: TLV)
The first byte is always 0x79 (01 1 11001, where 01 = "class=APPLICATION", 1 = "form=constructed", 11001 is application type 25)
The next byte is the length:
if length < 128 bytes:
length is on 1 byte, and the next byte is 0x30 (class=SEQUENCE)
else if length <= 256:
length is on 2 bytes, the first byte is 0x81, and the third byte is 0x30 (class=SEQUENCE)
else if length > 256:
length is on 3 bytes, the first byte is 0x82, and the fourth byte is 0x30 (class=SEQUENCE)
*/
rc4_next_16_global (S, 0, 0, edata2 + 0, out0, lid);
if (((out0[2] & 0x00ff80ff) != 0x00300079) &&
((out0[2] & 0xFF00FFFF) != 0x30008179) &&
((out0[2] & 0x0000FFFF) != 0x00008279 || (out0[3] & 0x000000FF) != 0x00000030))
return 0;
rc4_init_128 (S, data, lid);
u8 i = 0;
u8 j = 0;
// init hmac
u32 w0[4];
u32 w1[4];
u32 w2[4];
u32 w3[4];
w0[0] = K2[0];
w0[1] = K2[1];
w0[2] = K2[2];
w0[3] = K2[3];
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] = 0;
md5_hmac_ctx_t ctx;
md5_hmac_init_64 (&ctx, w0, w1, w2, w3);
int edata2_left;
for (edata2_left = edata2_len; edata2_left >= 64; edata2_left -= 64)
{
j = rc4_next_16_global (S, i, j, edata2, w0, lid); i += 16; edata2 += 4;
j = rc4_next_16_global (S, i, j, edata2, w1, lid); i += 16; edata2 += 4;
j = rc4_next_16_global (S, i, j, edata2, w2, lid); i += 16; edata2 += 4;
j = rc4_next_16_global (S, i, j, edata2, w3, lid); i += 16; edata2 += 4;
md5_hmac_update_64 (&ctx, w0, w1, w2, w3, 64);
}
w0[0] = 0;
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] = 0;
if (edata2_left < 16)
{
j = rc4_next_16_global (S, i, j, edata2, w0, lid); i += 16; edata2 += 4;
truncate_block_4x4_le_S (w0, edata2_left & 0xf);
}
else if (edata2_left < 32)
{
j = rc4_next_16_global (S, i, j, edata2, w0, lid); i += 16; edata2 += 4;
j = rc4_next_16_global (S, i, j, edata2, w1, lid); i += 16; edata2 += 4;
truncate_block_4x4_le_S (w1, edata2_left & 0xf);
}
else if (edata2_left < 48)
{
j = rc4_next_16_global (S, i, j, edata2, w0, lid); i += 16; edata2 += 4;
j = rc4_next_16_global (S, i, j, edata2, w1, lid); i += 16; edata2 += 4;
j = rc4_next_16_global (S, i, j, edata2, w2, lid); i += 16; edata2 += 4;
truncate_block_4x4_le_S (w2, edata2_left & 0xf);
}
else
{
j = rc4_next_16_global (S, i, j, edata2, w0, lid); i += 16; edata2 += 4;
j = rc4_next_16_global (S, i, j, edata2, w1, lid); i += 16; edata2 += 4;
j = rc4_next_16_global (S, i, j, edata2, w2, lid); i += 16; edata2 += 4;
j = rc4_next_16_global (S, i, j, edata2, w3, lid); i += 16; edata2 += 4;
truncate_block_4x4_le_S (w3, edata2_left & 0xf);
}
md5_hmac_update_64 (&ctx, w0, w1, w2, w3, edata2_left);
md5_hmac_final (&ctx);
if (checksum[0] != ctx.opad.h[0]) return 0;
if (checksum[1] != ctx.opad.h[1]) return 0;
if (checksum[2] != ctx.opad.h[2]) return 0;
if (checksum[3] != ctx.opad.h[3]) return 0;
return 1;
}
DECLSPEC void kerb_prepare (PRIVATE_AS const u32 *K, PRIVATE_AS const u32 *checksum, PRIVATE_AS u32 *digest, PRIVATE_AS u32 *K2)
{
// K1=MD5_HMAC(K,1); with 1 encoded as little indian on 4 bytes (01000000 in hexa);
u32 w0[4];
u32 w1[4];
u32 w2[4];
u32 w3[4];
w0[0] = K[0];
w0[1] = K[1];
w0[2] = K[2];
w0[3] = K[3];
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] = 0;
md5_hmac_ctx_t ctx1;
md5_hmac_init_64 (&ctx1, w0, w1, w2, w3);
w0[0] = 8;
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] = 0;
md5_hmac_update_64 (&ctx1, w0, w1, w2, w3, 4);
md5_hmac_final (&ctx1);
w0[0] = ctx1.opad.h[0];
w0[1] = ctx1.opad.h[1];
w0[2] = ctx1.opad.h[2];
w0[3] = ctx1.opad.h[3];
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] = 0;
md5_hmac_ctx_t ctx;
md5_hmac_init_64 (&ctx, w0, w1, w2, w3);
w0[0] = checksum[0];
w0[1] = checksum[1];
w0[2] = checksum[2];
w0[3] = checksum[3];
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] = 0;
md5_hmac_update_64 (&ctx, w0, w1, w2, w3, 16);
md5_hmac_final (&ctx);
digest[0] = ctx.opad.h[0];
digest[1] = ctx.opad.h[1];
digest[2] = ctx.opad.h[2];
digest[3] = ctx.opad.h[3];
K2[0] = ctx1.opad.h[0];
K2[1] = ctx1.opad.h[1];
K2[2] = ctx1.opad.h[2];
K2[3] = ctx1.opad.h[3];
}
KERNEL_FQ void m18200_mxx (KERN_ATTR_RULES_ESALT (krb5asrep_t))
{
/**
* modifier
*/
const u64 lid = get_local_id (0);
const u64 gid = get_global_id (0);
if (gid >= GID_CNT) return;
/**
* base
*/
COPY_PW (pws[gid]);
LOCAL_VK u32 S[64 * FIXED_LOCAL_SIZE];
u32 checksum[4];
checksum[0] = esalt_bufs[DIGESTS_OFFSET_HOST].checksum[0];
checksum[1] = esalt_bufs[DIGESTS_OFFSET_HOST].checksum[1];
checksum[2] = esalt_bufs[DIGESTS_OFFSET_HOST].checksum[2];
checksum[3] = esalt_bufs[DIGESTS_OFFSET_HOST].checksum[3];
/**
* loop
*/
for (u32 il_pos = 0; il_pos < IL_CNT; il_pos++)
{
pw_t tmp = PASTE_PW;
tmp.pw_len = apply_rules (rules_buf[il_pos].cmds, tmp.i, tmp.pw_len);
md4_ctx_t ctx;
md4_init (&ctx);
md4_update_utf16le (&ctx, tmp.i, tmp.pw_len);
md4_final (&ctx);
u32 digest[4];
u32 K2[4];
kerb_prepare (ctx.h, checksum, digest, K2);
if (decrypt_and_check (S, digest, esalt_bufs[DIGESTS_OFFSET_HOST].edata2, esalt_bufs[DIGESTS_OFFSET_HOST].edata2_len, K2, checksum, lid) == 1)
{
if (hc_atomic_inc (&hashes_shown[DIGESTS_OFFSET_HOST]) == 0)
{
mark_hash (plains_buf, d_return_buf, SALT_POS_HOST, DIGESTS_CNT, 0, DIGESTS_OFFSET_HOST + 0, gid, il_pos, 0, 0);
}
}
}
}
KERNEL_FQ void m18200_sxx (KERN_ATTR_RULES_ESALT (krb5asrep_t))
{
/**
* modifier
*/
const u64 lid = get_local_id (0);
const u64 gid = get_global_id (0);
if (gid >= GID_CNT) return;
/**
* base
*/
COPY_PW (pws[gid]);
LOCAL_VK u32 S[64 * FIXED_LOCAL_SIZE];
u32 checksum[4];
checksum[0] = esalt_bufs[DIGESTS_OFFSET_HOST].checksum[0];
checksum[1] = esalt_bufs[DIGESTS_OFFSET_HOST].checksum[1];
checksum[2] = esalt_bufs[DIGESTS_OFFSET_HOST].checksum[2];
checksum[3] = esalt_bufs[DIGESTS_OFFSET_HOST].checksum[3];
/**
* loop
*/
for (u32 il_pos = 0; il_pos < IL_CNT; il_pos++)
{
pw_t tmp = PASTE_PW;
tmp.pw_len = apply_rules (rules_buf[il_pos].cmds, tmp.i, tmp.pw_len);
md4_ctx_t ctx;
md4_init (&ctx);
md4_update_utf16le (&ctx, tmp.i, tmp.pw_len);
md4_final (&ctx);
u32 digest[4];
u32 K2[4];
kerb_prepare (ctx.h, checksum, digest, K2);
if (decrypt_and_check (S, digest, esalt_bufs[DIGESTS_OFFSET_HOST].edata2, esalt_bufs[DIGESTS_OFFSET_HOST].edata2_len, K2, checksum, lid) == 1)
{
if (hc_atomic_inc (&hashes_shown[DIGESTS_OFFSET_HOST]) == 0)
{
mark_hash (plains_buf, d_return_buf, SALT_POS_HOST, DIGESTS_CNT, 0, DIGESTS_OFFSET_HOST + 0, gid, il_pos, 0, 0);
}
}
}
}
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