/** * Author......: See docs/credits.txt * License.....: MIT */ //too much register pressure //#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_simd.cl" #include "inc_hash_md4.cl" #include "inc_hash_md5.cl" #include "inc_cipher_rc4.cl" #endif typedef struct krb5asrep { u32 account_info[512]; u32 checksum[4]; u32 edata2[5120]; u32 edata2_len; } krb5asrep_t; DECLSPEC void hmac_md5_pad (u32 *w0, u32 *w1, u32 *w2, u32 *w3, u32 *ipad, u32 *opad) { w0[0] = w0[0] ^ 0x36363636; w0[1] = w0[1] ^ 0x36363636; w0[2] = w0[2] ^ 0x36363636; w0[3] = w0[3] ^ 0x36363636; w1[0] = w1[0] ^ 0x36363636; w1[1] = w1[1] ^ 0x36363636; w1[2] = w1[2] ^ 0x36363636; w1[3] = w1[3] ^ 0x36363636; w2[0] = w2[0] ^ 0x36363636; w2[1] = w2[1] ^ 0x36363636; w2[2] = w2[2] ^ 0x36363636; w2[3] = w2[3] ^ 0x36363636; w3[0] = w3[0] ^ 0x36363636; w3[1] = w3[1] ^ 0x36363636; w3[2] = w3[2] ^ 0x36363636; w3[3] = w3[3] ^ 0x36363636; ipad[0] = MD5M_A; ipad[1] = MD5M_B; ipad[2] = MD5M_C; ipad[3] = MD5M_D; md5_transform (w0, w1, w2, w3, ipad); w0[0] = w0[0] ^ 0x6a6a6a6a; w0[1] = w0[1] ^ 0x6a6a6a6a; w0[2] = w0[2] ^ 0x6a6a6a6a; w0[3] = w0[3] ^ 0x6a6a6a6a; w1[0] = w1[0] ^ 0x6a6a6a6a; w1[1] = w1[1] ^ 0x6a6a6a6a; w1[2] = w1[2] ^ 0x6a6a6a6a; w1[3] = w1[3] ^ 0x6a6a6a6a; w2[0] = w2[0] ^ 0x6a6a6a6a; w2[1] = w2[1] ^ 0x6a6a6a6a; w2[2] = w2[2] ^ 0x6a6a6a6a; w2[3] = w2[3] ^ 0x6a6a6a6a; w3[0] = w3[0] ^ 0x6a6a6a6a; w3[1] = w3[1] ^ 0x6a6a6a6a; w3[2] = w3[2] ^ 0x6a6a6a6a; w3[3] = w3[3] ^ 0x6a6a6a6a; opad[0] = MD5M_A; opad[1] = MD5M_B; opad[2] = MD5M_C; opad[3] = MD5M_D; md5_transform (w0, w1, w2, w3, opad); } DECLSPEC void hmac_md5_run (u32 *w0, u32 *w1, u32 *w2, u32 *w3, u32 *ipad, u32 *opad, u32 *digest) { digest[0] = ipad[0]; digest[1] = ipad[1]; digest[2] = ipad[2]; digest[3] = ipad[3]; md5_transform (w0, w1, w2, w3, digest); w0[0] = digest[0]; w0[1] = digest[1]; w0[2] = digest[2]; w0[3] = digest[3]; w1[0] = 0x80; 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] = (64 + 16) * 8; w3[3] = 0; digest[0] = opad[0]; digest[1] = opad[1]; digest[2] = opad[2]; digest[3] = opad[3]; md5_transform (w0, w1, w2, w3, digest); } DECLSPEC int decrypt_and_check (LOCAL_AS u32 *S, u32 *data, GLOBAL_AS const u32 *edata2, const u32 edata2_len, const u32 *K2, const u32 *checksum) { rc4_init_128 (S, data); 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); if (((out0[2] & 0x00ff80ff) != 0x00300079) && ((out0[2] & 0xFF00FFFF) != 0x30008179) && ((out0[2] & 0x0000FFFF) != 0x00008279 || (out0[3] & 0x000000FF) != 0x00000030)) return 0; rc4_init_128 (S, data); 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; u32 ipad[4]; u32 opad[4]; hmac_md5_pad (w0, w1, w2, w3, ipad, opad); int edata2_left; for (edata2_left = edata2_len; edata2_left >= 64; edata2_left -= 64) { j = rc4_next_16_global (S, i, j, edata2, w0); i += 16; edata2 += 4; j = rc4_next_16_global (S, i, j, edata2, w1); i += 16; edata2 += 4; j = rc4_next_16_global (S, i, j, edata2, w2); i += 16; edata2 += 4; j = rc4_next_16_global (S, i, j, edata2, w3); i += 16; edata2 += 4; md5_transform (w0, w1, w2, w3, ipad); } 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); i += 16; edata2 += 4; truncate_block_4x4_le_S (w0, edata2_left & 0xf); append_0x80_1x4 (w0, edata2_left & 0xf); w3[2] = (64 + edata2_len) * 8; w3[3] = 0; md5_transform (w0, w1, w2, w3, ipad); } else if (edata2_left < 32) { j = rc4_next_16_global (S, i, j, edata2, w0); i += 16; edata2 += 4; j = rc4_next_16_global (S, i, j, edata2, w1); i += 16; edata2 += 4; truncate_block_4x4_le_S (w1, edata2_left & 0xf); append_0x80_1x4 (w1, edata2_left & 0xf); w3[2] = (64 + edata2_len) * 8; w3[3] = 0; md5_transform (w0, w1, w2, w3, ipad); } else if (edata2_left < 48) { j = rc4_next_16_global (S, i, j, edata2, w0); i += 16; edata2 += 4; j = rc4_next_16_global (S, i, j, edata2, w1); i += 16; edata2 += 4; j = rc4_next_16_global (S, i, j, edata2, w2); i += 16; edata2 += 4; truncate_block_4x4_le_S (w2, edata2_left & 0xf); append_0x80_1x4 (w2, edata2_left & 0xf); w3[2] = (64 + edata2_len) * 8; w3[3] = 0; md5_transform (w0, w1, w2, w3, ipad); } else { j = rc4_next_16_global (S, i, j, edata2, w0); i += 16; edata2 += 4; j = rc4_next_16_global (S, i, j, edata2, w1); i += 16; edata2 += 4; j = rc4_next_16_global (S, i, j, edata2, w2); i += 16; edata2 += 4; j = rc4_next_16_global (S, i, j, edata2, w3); i += 16; edata2 += 4; truncate_block_4x4_le_S (w3, edata2_left & 0xf); append_0x80_1x4 (w3, edata2_left & 0xf); if (edata2_left < 56) { w3[2] = (64 + edata2_len) * 8; w3[3] = 0; md5_transform (w0, w1, w2, w3, ipad); } else { md5_transform (w0, w1, w2, w3, ipad); 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] = (64 + edata2_len) * 8; w3[3] = 0; md5_transform (w0, w1, w2, w3, ipad); } } w0[0] = ipad[0]; w0[1] = ipad[1]; w0[2] = ipad[2]; w0[3] = ipad[3]; w1[0] = 0x80; 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] = (64 + 16) * 8; w3[3] = 0; md5_transform (w0, w1, w2, w3, opad); if (checksum[0] != opad[0]) return 0; if (checksum[1] != opad[1]) return 0; if (checksum[2] != opad[2]) return 0; if (checksum[3] != opad[3]) return 0; return 1; } DECLSPEC void kerb_prepare (const u32 *w0, const u32 *w1, const u32 pw_len, const u32 *checksum, u32 *digest, u32 *K2) { /** * pads */ u32 w0_t[4]; u32 w1_t[4]; u32 w2_t[4]; u32 w3_t[4]; w0_t[0] = w0[0]; w0_t[1] = w0[1]; w0_t[2] = w0[2]; w0_t[3] = w0[3]; w1_t[0] = w1[0]; w1_t[1] = w1[1]; w1_t[2] = w1[2]; w1_t[3] = w1[3]; w2_t[0] = 0; w2_t[1] = 0; w2_t[2] = 0; w2_t[3] = 0; w3_t[0] = 0; w3_t[1] = 0; w3_t[2] = 0; w3_t[3] = 0; // K=MD4(Little_indian(UNICODE(pwd)) append_0x80_2x4 (w0_t, w1_t, pw_len); make_utf16le (w1_t, w2_t, w3_t); make_utf16le (w0_t, w0_t, w1_t); w3_t[2] = pw_len * 8 * 2; w3_t[3] = 0; digest[0] = MD4M_A; digest[1] = MD4M_B; digest[2] = MD4M_C; digest[3] = MD4M_D; md4_transform (w0_t, w1_t, w2_t, w3_t, digest); // K1=MD5_HMAC(K,1); with 2 encoded as little indian on 4 bytes (02000000 in hexa); w0_t[0] = digest[0]; w0_t[1] = digest[1]; w0_t[2] = digest[2]; w0_t[3] = digest[3]; w1_t[0] = 0; w1_t[1] = 0; w1_t[2] = 0; w1_t[3] = 0; w2_t[0] = 0; w2_t[1] = 0; w2_t[2] = 0; w2_t[3] = 0; w3_t[0] = 0; w3_t[1] = 0; w3_t[2] = 0; w3_t[3] = 0; u32 ipad[4]; u32 opad[4]; hmac_md5_pad (w0_t, w1_t, w2_t, w3_t, ipad, opad); w0_t[0] = 8; w0_t[1] = 0x80; w0_t[2] = 0; w0_t[3] = 0; w1_t[0] = 0; w1_t[1] = 0; w1_t[2] = 0; w1_t[3] = 0; w2_t[0] = 0; w2_t[1] = 0; w2_t[2] = 0; w2_t[3] = 0; w3_t[0] = 0; w3_t[1] = 0; w3_t[2] = (64 + 4) * 8; w3_t[3] = 0; hmac_md5_run (w0_t, w1_t, w2_t, w3_t, ipad, opad, digest); // K2 = K1; K2[0] = digest[0]; K2[1] = digest[1]; K2[2] = digest[2]; K2[3] = digest[3]; // K3=MD5_HMAC(K1,checksum); w0_t[0] = digest[0]; w0_t[1] = digest[1]; w0_t[2] = digest[2]; w0_t[3] = digest[3]; w1_t[0] = 0; w1_t[1] = 0; w1_t[2] = 0; w1_t[3] = 0; w2_t[0] = 0; w2_t[1] = 0; w2_t[2] = 0; w2_t[3] = 0; w3_t[0] = 0; w3_t[1] = 0; w3_t[2] = 0; w3_t[3] = 0; hmac_md5_pad (w0_t, w1_t, w2_t, w3_t, ipad, opad); w0_t[0] = checksum[0]; w0_t[1] = checksum[1]; w0_t[2] = checksum[2]; w0_t[3] = checksum[3]; w1_t[0] = 0x80; w1_t[1] = 0; w1_t[2] = 0; w1_t[3] = 0; w2_t[0] = 0; w2_t[1] = 0; w2_t[2] = 0; w2_t[3] = 0; w3_t[0] = 0; w3_t[1] = 0; w3_t[2] = (64 + 16) * 8; w3_t[3] = 0; hmac_md5_run (w0_t, w1_t, w2_t, w3_t, ipad, opad, digest); } KERNEL_FQ void m18200_m04 (KERN_ATTR_ESALT (krb5asrep_t)) { /** * modifier */ const u64 lid = get_local_id (0); /** * base */ const u64 gid = get_global_id (0); if (gid >= GID_CNT) return; u32 pw_buf0[4]; u32 pw_buf1[4]; pw_buf0[0] = pws[gid].i[0]; pw_buf0[1] = pws[gid].i[1]; pw_buf0[2] = pws[gid].i[2]; pw_buf0[3] = pws[gid].i[3]; pw_buf1[0] = pws[gid].i[4]; pw_buf1[1] = pws[gid].i[5]; pw_buf1[2] = pws[gid].i[6]; pw_buf1[3] = pws[gid].i[7]; const u32 pw_l_len = pws[gid].pw_len & 63; /** * shared */ LOCAL_VK u32 S[64 * FIXED_LOCAL_SIZE]; /** * salt */ 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 += VECT_SIZE) { const u32x pw_r_len = pwlenx_create_combt (combs_buf, il_pos) & 63; const u32x pw_len = (pw_l_len + pw_r_len) & 63; /** * concat password candidate */ u32x wordl0[4] = { 0 }; u32x wordl1[4] = { 0 }; u32x wordl2[4] = { 0 }; u32x wordl3[4] = { 0 }; wordl0[0] = pw_buf0[0]; wordl0[1] = pw_buf0[1]; wordl0[2] = pw_buf0[2]; wordl0[3] = pw_buf0[3]; wordl1[0] = pw_buf1[0]; wordl1[1] = pw_buf1[1]; wordl1[2] = pw_buf1[2]; wordl1[3] = pw_buf1[3]; u32x wordr0[4] = { 0 }; u32x wordr1[4] = { 0 }; u32x wordr2[4] = { 0 }; u32x wordr3[4] = { 0 }; wordr0[0] = ix_create_combt (combs_buf, il_pos, 0); wordr0[1] = ix_create_combt (combs_buf, il_pos, 1); wordr0[2] = ix_create_combt (combs_buf, il_pos, 2); wordr0[3] = ix_create_combt (combs_buf, il_pos, 3); wordr1[0] = ix_create_combt (combs_buf, il_pos, 4); wordr1[1] = ix_create_combt (combs_buf, il_pos, 5); wordr1[2] = ix_create_combt (combs_buf, il_pos, 6); wordr1[3] = ix_create_combt (combs_buf, il_pos, 7); if (COMBS_MODE == COMBINATOR_MODE_BASE_LEFT) { switch_buffer_by_offset_le_VV (wordr0, wordr1, wordr2, wordr3, pw_l_len); } else { switch_buffer_by_offset_le_VV (wordl0, wordl1, wordl2, wordl3, pw_r_len); } u32x w0[4]; u32x w1[4]; w0[0] = wordl0[0] | wordr0[0]; w0[1] = wordl0[1] | wordr0[1]; w0[2] = wordl0[2] | wordr0[2]; w0[3] = wordl0[3] | wordr0[3]; w1[0] = wordl1[0] | wordr1[0]; w1[1] = wordl1[1] | wordr1[1]; w1[2] = wordl1[2] | wordr1[2]; w1[3] = wordl1[3] | wordr1[3]; /** * kerberos */ u32 digest[4]; u32 K2[4]; kerb_prepare (w0, w1, pw_len, checksum, digest, K2); u32 tmp[4]; tmp[0] = digest[0]; tmp[1] = digest[1]; tmp[2] = digest[2]; tmp[3] = digest[3]; if (decrypt_and_check (S, tmp, esalt_bufs[DIGESTS_OFFSET_HOST].edata2, esalt_bufs[DIGESTS_OFFSET_HOST].edata2_len, K2, checksum) == 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_m08 (KERN_ATTR_ESALT (krb5asrep_t)) { } KERNEL_FQ void m18200_m16 (KERN_ATTR_ESALT (krb5asrep_t)) { } KERNEL_FQ void m18200_s04 (KERN_ATTR_ESALT (krb5asrep_t)) { /** * modifier */ const u64 lid = get_local_id (0); /** * base */ const u64 gid = get_global_id (0); if (gid >= GID_CNT) return; u32 pw_buf0[4]; u32 pw_buf1[4]; pw_buf0[0] = pws[gid].i[0]; pw_buf0[1] = pws[gid].i[1]; pw_buf0[2] = pws[gid].i[2]; pw_buf0[3] = pws[gid].i[3]; pw_buf1[0] = pws[gid].i[4]; pw_buf1[1] = pws[gid].i[5]; pw_buf1[2] = pws[gid].i[6]; pw_buf1[3] = pws[gid].i[7]; const u32 pw_l_len = pws[gid].pw_len & 63; /** * shared */ LOCAL_VK u32 S[64 * FIXED_LOCAL_SIZE]; /** * salt */ 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 += VECT_SIZE) { const u32x pw_r_len = pwlenx_create_combt (combs_buf, il_pos) & 63; const u32x pw_len = (pw_l_len + pw_r_len) & 63; /** * concat password candidate */ u32x wordl0[4] = { 0 }; u32x wordl1[4] = { 0 }; u32x wordl2[4] = { 0 }; u32x wordl3[4] = { 0 }; wordl0[0] = pw_buf0[0]; wordl0[1] = pw_buf0[1]; wordl0[2] = pw_buf0[2]; wordl0[3] = pw_buf0[3]; wordl1[0] = pw_buf1[0]; wordl1[1] = pw_buf1[1]; wordl1[2] = pw_buf1[2]; wordl1[3] = pw_buf1[3]; u32x wordr0[4] = { 0 }; u32x wordr1[4] = { 0 }; u32x wordr2[4] = { 0 }; u32x wordr3[4] = { 0 }; wordr0[0] = ix_create_combt (combs_buf, il_pos, 0); wordr0[1] = ix_create_combt (combs_buf, il_pos, 1); wordr0[2] = ix_create_combt (combs_buf, il_pos, 2); wordr0[3] = ix_create_combt (combs_buf, il_pos, 3); wordr1[0] = ix_create_combt (combs_buf, il_pos, 4); wordr1[1] = ix_create_combt (combs_buf, il_pos, 5); wordr1[2] = ix_create_combt (combs_buf, il_pos, 6); wordr1[3] = ix_create_combt (combs_buf, il_pos, 7); if (COMBS_MODE == COMBINATOR_MODE_BASE_LEFT) { switch_buffer_by_offset_le_VV (wordr0, wordr1, wordr2, wordr3, pw_l_len); } else { switch_buffer_by_offset_le_VV (wordl0, wordl1, wordl2, wordl3, pw_r_len); } u32x w0[4]; u32x w1[4]; w0[0] = wordl0[0] | wordr0[0]; w0[1] = wordl0[1] | wordr0[1]; w0[2] = wordl0[2] | wordr0[2]; w0[3] = wordl0[3] | wordr0[3]; w1[0] = wordl1[0] | wordr1[0]; w1[1] = wordl1[1] | wordr1[1]; w1[2] = wordl1[2] | wordr1[2]; w1[3] = wordl1[3] | wordr1[3]; /** * kerberos */ u32 digest[4]; u32 K2[4]; kerb_prepare (w0, w1, pw_len, checksum, digest, K2); u32 tmp[4]; tmp[0] = digest[0]; tmp[1] = digest[1]; tmp[2] = digest[2]; tmp[3] = digest[3]; if (decrypt_and_check (S, tmp, esalt_bufs[DIGESTS_OFFSET_HOST].edata2, esalt_bufs[DIGESTS_OFFSET_HOST].edata2_len, K2, checksum) == 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_s08 (KERN_ATTR_ESALT (krb5asrep_t)) { } KERNEL_FQ void m18200_s16 (KERN_ATTR_ESALT (krb5asrep_t)) { }