From 0d282bbfb3723d65149b15516ddcac08cddf2ef1 Mon Sep 17 00:00:00 2001 From: Gabriele Gristina Date: Sat, 5 Mar 2022 12:59:38 +0100 Subject: [PATCH] Added hash-mode: Kerberos 5, etype 18, DB --- OpenCL/m28900-pure.cl | 424 +++++++++++++++++++++++++++++++++++ src/modules/module_28900.c | 342 ++++++++++++++++++++++++++++ tools/test_modules/m28900.pm | 105 +++++++++ 3 files changed, 871 insertions(+) create mode 100644 OpenCL/m28900-pure.cl create mode 100644 src/modules/module_28900.c create mode 100644 tools/test_modules/m28900.pm diff --git a/OpenCL/m28900-pure.cl b/OpenCL/m28900-pure.cl new file mode 100644 index 000000000..075ed4e94 --- /dev/null +++ b/OpenCL/m28900-pure.cl @@ -0,0 +1,424 @@ +/** + * Author......: See docs/credits.txt + * License.....: MIT + */ + +#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_simd.cl) +#include M2S(INCLUDE_PATH/inc_hash_sha1.cl) +#include M2S(INCLUDE_PATH/inc_cipher_aes.cl) +#endif + +#define COMPARE_S M2S(INCLUDE_PATH/inc_comp_single.cl) +#define COMPARE_M M2S(INCLUDE_PATH/inc_comp_multi.cl) + +typedef struct krb5db_18 +{ + u32 user[128]; + u32 domain[128]; + u32 account_info[512]; + u32 account_info_len; + +} krb5db_18_t; + +typedef struct krb5db_18_tmp +{ + u32 ipad[5]; + u32 opad[5]; + u32 dgst[16]; + u32 out[16]; + +} krb5db_18_tmp_t; + +DECLSPEC void aes256_encrypt_cbc (PRIVATE_AS const u32 *aes_ks, PRIVATE_AS u32 *aes_iv, PRIVATE_AS const u32 *in, PRIVATE_AS u32 *out, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4) +{ + u32 data[4]; + + data[0] = hc_swap32_S (in[0]); + data[1] = hc_swap32_S (in[1]); + data[2] = hc_swap32_S (in[2]); + data[3] = hc_swap32_S (in[3]); + + data[0] ^= aes_iv[0]; + data[1] ^= aes_iv[1]; + data[2] ^= aes_iv[2]; + data[3] ^= aes_iv[3]; + + aes256_encrypt (aes_ks, data, out, s_te0, s_te1, s_te2, s_te3, s_te4); + + aes_iv[0] = out[0]; + aes_iv[1] = out[1]; + aes_iv[2] = out[2]; + aes_iv[3] = out[3]; + + out[0] = hc_swap32_S (out[0]); + out[1] = hc_swap32_S (out[1]); + out[2] = hc_swap32_S (out[2]); + out[3] = hc_swap32_S (out[3]); +} + +DECLSPEC void aes256_decrypt_cbc (PRIVATE_AS const u32 *ks1, PRIVATE_AS const u32 *in, PRIVATE_AS u32 *out, PRIVATE_AS u32 *essiv, SHM_TYPE u32 *s_td0, SHM_TYPE u32 *s_td1, SHM_TYPE u32 *s_td2, SHM_TYPE u32 *s_td3, SHM_TYPE u32 *s_td4) +{ + aes256_decrypt (ks1, in, out, s_td0, s_td1, s_td2, s_td3, s_td4); + + out[0] ^= essiv[0]; + out[1] ^= essiv[1]; + out[2] ^= essiv[2]; + out[3] ^= essiv[3]; + + essiv[0] = in[0]; + essiv[1] = in[1]; + essiv[2] = in[2]; + essiv[3] = in[3]; +} + +DECLSPEC void hmac_sha1_run_V (PRIVATE_AS u32x *w0, PRIVATE_AS u32x *w1, PRIVATE_AS u32x *w2, PRIVATE_AS u32x *w3, PRIVATE_AS u32x *ipad, PRIVATE_AS u32x *opad, PRIVATE_AS u32x *digest) +{ + digest[0] = ipad[0]; + digest[1] = ipad[1]; + digest[2] = ipad[2]; + digest[3] = ipad[3]; + digest[4] = ipad[4]; + + sha1_transform_vector (w0, w1, w2, w3, digest); + + w0[0] = digest[0]; + w0[1] = digest[1]; + w0[2] = digest[2]; + w0[3] = digest[3]; + w1[0] = digest[4]; + w1[1] = 0x80000000; + 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 + 20) * 8; + + digest[0] = opad[0]; + digest[1] = opad[1]; + digest[2] = opad[2]; + digest[3] = opad[3]; + digest[4] = opad[4]; + + sha1_transform_vector (w0, w1, w2, w3, digest); +} + +KERNEL_FQ void m28900_init (KERN_ATTR_TMPS_ESALT (krb5db_18_tmp_t, krb5db_18_t)) +{ + /** + * base + */ + + const u64 gid = get_global_id (0); + + if (gid >= GID_CNT) return; + + /** + * main + */ + + /* initialize hmac-sha1 for pbkdf2(password, account, 4096, account_len) */ + + sha1_hmac_ctx_t sha1_hmac_ctx; + + sha1_hmac_init_global_swap (&sha1_hmac_ctx, pws[gid].i, pws[gid].pw_len); + + tmps[gid].ipad[0] = sha1_hmac_ctx.ipad.h[0]; + tmps[gid].ipad[1] = sha1_hmac_ctx.ipad.h[1]; + tmps[gid].ipad[2] = sha1_hmac_ctx.ipad.h[2]; + tmps[gid].ipad[3] = sha1_hmac_ctx.ipad.h[3]; + tmps[gid].ipad[4] = sha1_hmac_ctx.ipad.h[4]; + + tmps[gid].opad[0] = sha1_hmac_ctx.opad.h[0]; + tmps[gid].opad[1] = sha1_hmac_ctx.opad.h[1]; + tmps[gid].opad[2] = sha1_hmac_ctx.opad.h[2]; + tmps[gid].opad[3] = sha1_hmac_ctx.opad.h[3]; + tmps[gid].opad[4] = sha1_hmac_ctx.opad.h[4]; + + sha1_hmac_update_global_swap (&sha1_hmac_ctx, esalt_bufs[DIGESTS_OFFSET_HOST].account_info, esalt_bufs[DIGESTS_OFFSET_HOST].account_info_len); + + for (u32 i = 0, j = 1; i < 8; i += 5, j += 1) + { + sha1_hmac_ctx_t sha1_hmac_ctx2 = sha1_hmac_ctx; + + u32 w0[4]; + u32 w1[4]; + u32 w2[4]; + u32 w3[4]; + + w0[0] = j; + 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; + + sha1_hmac_update_64 (&sha1_hmac_ctx2, w0, w1, w2, w3, 4); + + sha1_hmac_final (&sha1_hmac_ctx2); + + tmps[gid].dgst[i + 0] = sha1_hmac_ctx2.opad.h[0]; + tmps[gid].dgst[i + 1] = sha1_hmac_ctx2.opad.h[1]; + tmps[gid].dgst[i + 2] = sha1_hmac_ctx2.opad.h[2]; + tmps[gid].dgst[i + 3] = sha1_hmac_ctx2.opad.h[3]; + tmps[gid].dgst[i + 4] = sha1_hmac_ctx2.opad.h[4]; + + tmps[gid].out[i + 0] = tmps[gid].dgst[i + 0]; + tmps[gid].out[i + 1] = tmps[gid].dgst[i + 1]; + tmps[gid].out[i + 2] = tmps[gid].dgst[i + 2]; + tmps[gid].out[i + 3] = tmps[gid].dgst[i + 3]; + tmps[gid].out[i + 4] = tmps[gid].dgst[i + 4]; + } +} + +KERNEL_FQ void m28900_loop (KERN_ATTR_TMPS_ESALT (krb5db_18_tmp_t, krb5db_18_t)) +{ + /** + * base + */ + const u64 gid = get_global_id (0); + + if ((gid * VECT_SIZE) >= GID_CNT) return; + + u32x ipad[5]; + u32x opad[5]; + + ipad[0] = packv (tmps, ipad, gid, 0); + ipad[1] = packv (tmps, ipad, gid, 1); + ipad[2] = packv (tmps, ipad, gid, 2); + ipad[3] = packv (tmps, ipad, gid, 3); + ipad[4] = packv (tmps, ipad, gid, 4); + + opad[0] = packv (tmps, opad, gid, 0); + opad[1] = packv (tmps, opad, gid, 1); + opad[2] = packv (tmps, opad, gid, 2); + opad[3] = packv (tmps, opad, gid, 3); + opad[4] = packv (tmps, opad, gid, 4); + + for (u32 i = 0; i < 8; i += 5) + { + u32x dgst[5]; + u32x out[5]; + + dgst[0] = packv (tmps, dgst, gid, i + 0); + dgst[1] = packv (tmps, dgst, gid, i + 1); + dgst[2] = packv (tmps, dgst, gid, i + 2); + dgst[3] = packv (tmps, dgst, gid, i + 3); + dgst[4] = packv (tmps, dgst, gid, i + 4); + + out[0] = packv (tmps, out, gid, i + 0); + out[1] = packv (tmps, out, gid, i + 1); + out[2] = packv (tmps, out, gid, i + 2); + out[3] = packv (tmps, out, gid, i + 3); + out[4] = packv (tmps, out, gid, i + 4); + + for (u32 j = 0; j < LOOP_CNT; j++) + { + u32x w0[4]; + u32x w1[4]; + u32x w2[4]; + u32x w3[4]; + + w0[0] = dgst[0]; + w0[1] = dgst[1]; + w0[2] = dgst[2]; + w0[3] = dgst[3]; + w1[0] = dgst[4]; + w1[1] = 0x80000000; + 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 + 20) * 8; + + hmac_sha1_run_V (w0, w1, w2, w3, ipad, opad, dgst); + + out[0] ^= dgst[0]; + out[1] ^= dgst[1]; + out[2] ^= dgst[2]; + out[3] ^= dgst[3]; + out[4] ^= dgst[4]; + } + + unpackv (tmps, dgst, gid, i + 0, dgst[0]); + unpackv (tmps, dgst, gid, i + 1, dgst[1]); + unpackv (tmps, dgst, gid, i + 2, dgst[2]); + unpackv (tmps, dgst, gid, i + 3, dgst[3]); + unpackv (tmps, dgst, gid, i + 4, dgst[4]); + + unpackv (tmps, out, gid, i + 0, out[0]); + unpackv (tmps, out, gid, i + 1, out[1]); + unpackv (tmps, out, gid, i + 2, out[2]); + unpackv (tmps, out, gid, i + 3, out[3]); + unpackv (tmps, out, gid, i + 4, out[4]); + } +} + +KERNEL_FQ void m28900_comp (KERN_ATTR_TMPS_ESALT (krb5db_18_tmp_t, krb5db_18_t)) +{ + /** + * base + */ + + 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_CNT) return; + + /* + at this point, the output ('seed') will be used to generate AES keys: + + key_bytes = derive(seed, 'kerberos'.encode(), seedsize) + + 'key_bytes' will be the AES key used to generate 'ke' and 'ki' + 'ke' will be the AES key to decrypt the ticket + 'ki' will be the key to compute the final HMAC + */ + + u32 nfolded[4]; + + // we can precompute _nfold('kerberos', 16) + + nfolded[0] = 0x6b657262; + nfolded[1] = 0x65726f73; + nfolded[2] = 0x7b9b5b2b; + nfolded[3] = 0x93132b93; + + // then aes_cbc encrypt this nfolded value with 'seed' as key along with a null IV + + u32 aes_key[8]; + + aes_key[0] = hc_swap32_S (tmps[gid].out[0]); + aes_key[1] = hc_swap32_S (tmps[gid].out[1]); + aes_key[2] = hc_swap32_S (tmps[gid].out[2]); + aes_key[3] = hc_swap32_S (tmps[gid].out[3]); + aes_key[4] = hc_swap32_S (tmps[gid].out[4]); + aes_key[5] = hc_swap32_S (tmps[gid].out[5]); + aes_key[6] = hc_swap32_S (tmps[gid].out[6]); + aes_key[7] = hc_swap32_S (tmps[gid].out[7]); + + u32 aes_iv[4]; + + aes_iv[0] = 0; + aes_iv[1] = 0; + aes_iv[2] = 0; + aes_iv[3] = 0; + + u32 aes_ks[60]; + + aes256_set_encrypt_key (aes_ks, aes_key, s_te0, s_te1, s_te2, s_te3); + + u32 key_bytes[8]; + + u32 out[4]; + + aes256_encrypt_cbc (aes_ks, aes_iv, nfolded, out, s_te0, s_te1, s_te2, s_te3, s_te4); + + key_bytes[0] = out[0]; + key_bytes[1] = out[1]; + key_bytes[2] = out[2]; + key_bytes[3] = out[3]; + + /* + aes_iv[0] = 0; + aes_iv[1] = 0; + aes_iv[2] = 0; + aes_iv[3] = 0; + + aes256_encrypt_cbc (aes_ks, aes_iv, out, out, s_te0, s_te1, s_te2, s_te3, s_te4); + + key_bytes[4] = out[0]; + key_bytes[5] = out[1]; + key_bytes[6] = out[2]; + key_bytes[7] = out[3]; + */ + + const u32 r0 = key_bytes[0]; + const u32 r1 = key_bytes[1]; + const u32 r2 = key_bytes[2]; + const u32 r3 = key_bytes[3]; + + #define il_pos 0 + + #ifdef KERNEL_STATIC + #include COMPARE_M + #endif +} diff --git a/src/modules/module_28900.c b/src/modules/module_28900.c new file mode 100644 index 000000000..c40cffef6 --- /dev/null +++ b/src/modules/module_28900.c @@ -0,0 +1,342 @@ +/** + * 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_8; +static const u32 HASH_CATEGORY = HASH_CATEGORY_NETWORK_PROTOCOL; +static const char *HASH_NAME = "Kerberos 5, etype 18, DB"; +static const u64 KERN_TYPE = 28900; +static const u32 OPTI_TYPE = OPTI_TYPE_ZERO_BYTE + | OPTI_TYPE_NOT_ITERATED + | OPTI_TYPE_SLOW_HASH_SIMD_LOOP; +static const u64 OPTS_TYPE = OPTS_TYPE_PT_GENERATE_LE; +static const u32 SALT_TYPE = SALT_TYPE_EMBEDDED; +static const char *ST_PASS = "password"; +static const char *ST_HASH = "$krb5db$18$test$TEST.LOCAL$487addf1717899f2ee45c4b67e159d54adec46d086f339b88fd7deaa25d49a65"; + +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 krb5db_18 +{ + u32 user[128]; + u32 domain[128]; + u32 account_info[512]; + u32 account_info_len; + +} krb5db_18_t; + +typedef struct krb5db_18_tmp +{ + u32 ipad[5]; + u32 opad[5]; + u32 dgst[16]; + u32 out[16]; + +} krb5db_18_tmp_t; + +static const char *SIGNATURE_KRB5DB = "$krb5db$18$"; + +bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hc_device_param_t *device_param) +{ + // AMD Radeon Pro W5700X Compute Engine; 1.2 (Apr 22 2021 21:54:44); 11.3.1; 20E241 + if ((device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE) && (device_param->opencl_device_type & CL_DEVICE_TYPE_GPU)) + { + if (device_param->is_metal == false) + { + return true; + } + } + + return false; +} + +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 (krb5db_18_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 (krb5db_18_t); + + return esalt_size; +} + +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; + + krb5db_18_t *krb5db = (krb5db_18_t *) esalt_buf; + + hc_token_t token; + + token.signatures_cnt = 1; + token.signatures_buf[0] = SIGNATURE_KRB5DB; + + token.len[0] = 11; + token.attr[0] = TOKEN_ATTR_FIXED_LENGTH + | TOKEN_ATTR_VERIFY_SIGNATURE; + + /** + * $krb5db$18$user$realm$hash + * $krb5db$18$user$realm$*spn*$hash + */ + + // assume no signature found + if (line_len < 11) return (PARSER_SALT_LENGTH); + + char *spn_info_start = strchr ((const char *) line_buf + 11 + 1, '*'); + + int is_spn_provided = 0; + + // assume $krb5db$17$user$realm$checksum$edata2 + if (spn_info_start == NULL) + { + token.token_cnt = 4; + + token.sep[1] = '$'; + token.len_min[1] = 1; + token.len_max[1] = 512; + token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH; + + token.sep[2] = '$'; + token.len_min[2] = 1; + token.len_max[2] = 512; + token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH; + + token.sep[3] = '$'; + token.len_min[3] = 64; + token.len_max[3] = 64; + token.attr[3] = TOKEN_ATTR_VERIFY_LENGTH + | TOKEN_ATTR_VERIFY_HEX; + + } + // assume $krb5db$18$user$realm$*spn*$hash + else + { + char *spn_info_stop = strchr ((const char *) spn_info_start + 1, '*'); + + if (spn_info_stop == NULL) return (PARSER_SEPARATOR_UNMATCHED); + + spn_info_stop++; // we want the * $char included + spn_info_stop++; // we want the $ char included + + const int spn_info_len = spn_info_stop - spn_info_start; + + token.token_cnt = 5; + + token.sep[1] = '$'; + token.len_min[1] = 1; + token.len_max[1] = 512; + token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH; + + token.sep[2] = '$'; + token.len_min[2] = 1; + token.len_max[2] = 512; + token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH; + + token.len[3] = spn_info_len; + token.attr[3] = TOKEN_ATTR_FIXED_LENGTH; + + token.sep[4] = '$'; + token.len_min[4] = 64; + token.len_max[4] = 64; + token.attr[4] = TOKEN_ATTR_VERIFY_LENGTH + | TOKEN_ATTR_VERIFY_HEX; + + is_spn_provided = 1; + } + + const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token); + + if (rc_tokenizer != PARSER_OK) return (rc_tokenizer); + + const u8 *user_pos; + const u8 *domain_pos; + const u8 *checksum_pos; + + int user_len; + int domain_len; + int account_info_len; + + user_pos = token.buf[1]; + user_len = token.len[1]; + + memcpy (krb5db->user, user_pos, user_len); + + domain_pos = token.buf[2]; + domain_len = token.len[2]; + + memcpy (krb5db->domain, domain_pos, domain_len); + + checksum_pos = token.buf[3 + is_spn_provided]; + + account_info_len = token.len[2] + token.len[1]; + + u8 *account_info_ptr = (u8 *) krb5db->account_info; + + // domain must be uppercase + + u8 domain[128]; + + memcpy (domain, domain_pos, domain_len); + uppercase (domain, domain_len); + + memcpy (account_info_ptr, domain, domain_len); + memcpy (account_info_ptr + domain_len, user_pos, user_len); + + krb5db->account_info_len = account_info_len; + + // salt + + salt->salt_buf[0] = krb5db->account_info[0]; + salt->salt_buf[1] = krb5db->account_info[1]; + salt->salt_buf[2] = krb5db->account_info[2]; + salt->salt_buf[3] = krb5db->account_info[3]; + + salt->salt_len = 16; + + salt->salt_iter = 4096 - 1; + + // digest + + digest[0] = byte_swap_32 (hex_to_u32 (checksum_pos + 0)); + digest[1] = byte_swap_32 (hex_to_u32 (checksum_pos + 8)); + digest[2] = byte_swap_32 (hex_to_u32 (checksum_pos + 16)); + digest[3] = byte_swap_32 (hex_to_u32 (checksum_pos + 24)); + digest[4] = byte_swap_32 (hex_to_u32 (checksum_pos + 32)); + digest[5] = byte_swap_32 (hex_to_u32 (checksum_pos + 40)); + digest[6] = byte_swap_32 (hex_to_u32 (checksum_pos + 48)); + digest[7] = byte_swap_32 (hex_to_u32 (checksum_pos + 56)); + + 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 u32 *digest = (const u32 *) digest_buf; + + const krb5db_18_t *krb5db = (const krb5db_18_t *) esalt_buf; + + const int line_len = snprintf (line_buf, line_size, "%s%s$%s$%08x%08x%08x%08x%08x%08x%08x%08x", + SIGNATURE_KRB5DB, + (char *) krb5db->user, + (char *) krb5db->domain, + digest[0], + digest[1], + digest[2], + digest[3], + digest[4], + digest[5], + digest[6], + digest[7]); + + return line_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_deprecated_notice = 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_extra_tuningdb_block = 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_postprocess = 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_DEFAULT; + 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_unstable_warning; + module_ctx->module_warmup_disable = MODULE_DEFAULT; +} diff --git a/tools/test_modules/m28900.pm b/tools/test_modules/m28900.pm new file mode 100644 index 000000000..6b44bc0a4 --- /dev/null +++ b/tools/test_modules/m28900.pm @@ -0,0 +1,105 @@ +#!/usr/bin/env perl + +## +## Author......: See docs/credits.txt +## License.....: MIT +## + +use strict; +use warnings; + +use Digest::SHA qw (hmac_sha1); +use Crypt::Mode::CBC; +use Crypt::PBKDF2; + +sub byte2hex +{ + my $input = shift; + return unpack ("H*", $input); +} + +sub hex2byte +{ + my $input = shift; + return pack ("H*", $input); +} + +sub pad +{ + my $n = shift; + my $size = shift; + + return (~$n + 1) & ($size - 1); +} + +sub module_constraints { [[0, 256], [16, 16], [-1, -1], [-1, -1], [-1, -1]] } + +sub module_generate_hash +{ + my $word = shift; + my $salt = shift; + my $user = shift // "user"; + my $realm = shift // "realm"; + + my $mysalt = uc $realm; + $mysalt = $mysalt . $user; + + # first we generate the 'seed' + my $iter = 4096; + my $pbkdf2 = Crypt::PBKDF2->new + ( + hash_class => 'HMACSHA1', + iterations => $iter, + output_len => 32 + ); + + my $b_seed = $pbkdf2->PBKDF2 ($mysalt, $word); + + # we can precompute this + my $b_kerberos_nfolded = hex2byte ('6b65726265726f737b9b5b2b93132b93'); + + my $b_iv = hex2byte ('0' x 32); + + # 'key_bytes' will be the AES key used to generate 'ki' (for final hmac-sha1) + # and 'ke' (AES key to decrypt/encrypt the ticket) + my $cbc = Crypt::Mode::CBC->new ('AES', 0); + my $b_key_bytes = $cbc->encrypt ($b_kerberos_nfolded, $b_seed, $b_iv); + + $b_key_bytes = $b_key_bytes . $cbc->encrypt ($b_key_bytes, $b_seed, $b_iv); + + my $tmp_hash = sprintf ('$krb5db$18$%s$%s$%s', $user, $realm, unpack ("H*", $b_key_bytes)); + + return $tmp_hash; +} + +sub module_verify_hash +{ + my $line = shift; + + my ($hash, $word) = split (':', $line); + + return unless defined $hash; + return unless defined $word; + + my @data = split ('\$', $hash); + + return unless scalar @data == 5; + + shift @data; + + my $signature = shift @data; + my $algorithm = shift @data; + my $user = shift @data; + my $realm = shift @data; + + return unless ($signature eq "krb5db"); + return unless ($algorithm eq "18"); + + my $word_packed = pack_if_HEX_notation ($word); + + my $new_hash = module_generate_hash ($word_packed, undef, $user, $realm); + + return ($new_hash, $word); +} + +1;