/** * 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_INSIDE_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_NETWORK_PROTOCOL; static const char *HASH_NAME = "Kerberos 5, etype 23, AS-REP"; static const u64 KERN_TYPE = 18200; static const u32 OPTI_TYPE = OPTI_TYPE_ZERO_BYTE | OPTI_TYPE_NOT_ITERATED; static const u64 OPTS_TYPE = OPTS_TYPE_PT_GENERATE_LE; static const u32 PWDUMP_COLUMN = PWDUMP_COLUMN_NTLM_HASH; static const u32 SALT_TYPE = SALT_TYPE_EMBEDDED; static const char *ST_PASS = "hashcat"; static const char *ST_HASH = "$krb5asrep$23$user@domain.com:3e156ada591263b8aab0965f5aebd837$007497cb51b6c8116d6407a782ea0e1c5402b17db7afa6b05a6d30ed164a9933c754d720e279c6c573679bd27128fe77e5fea1f72334c1193c8ff0b370fadc6368bf2d49bbfdba4c5dccab95e8c8ebfdc75f438a0797dbfb2f8a1a5f4c423f9bfc1fea483342a11bd56a216f4d5158ccc4b224b52894fadfba3957dfe4b6b8f5f9f9fe422811a314768673e0c924340b8ccb84775ce9defaa3baa0910b676ad0036d13032b0dd94e3b13903cc738a7b6d00b0b3c210d1f972a6c7cae9bd3c959acf7565be528fc179118f28c679f6deeee1456f0781eb8154e18e49cb27b64bf74cd7112a0ebae2102ac"; 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_pwdump_column (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 PWDUMP_COLUMN; } 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 krb5asrep { u32 account_info[512]; u32 checksum[4]; u32 edata2[5120]; u32 edata2_len; } krb5asrep_t; static const char *SIGNATURE_KRB5ASREP = "$krb5asrep$23$"; char *module_jit_build_options (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 hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param) { char *jit_build_options = NULL; // Extra treatment for Apple systems if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE) { return jit_build_options; } // AMD-GPU-PRO if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false)) { hc_asprintf (&jit_build_options, "-D _unroll"); } return jit_build_options; } 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 (krb5asrep_t); return esalt_size; } u32 module_kernel_threads_min (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 u32 kernel_threads_min = 64; return kernel_threads_min; } u32 module_kernel_threads_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) { const u32 kernel_threads_max = 64; return kernel_threads_max; } 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) { if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE) { // self-test failed if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_GPU)) { return true; } } // amdgpu-pro-19.30-934563-ubuntu-18.04: CL_OUT_OF_RESOURCES if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == false)) { if ((hashconfig->opti_type & OPTI_TYPE_OPTIMIZED_KERNEL) == 0) { return true; } } return false; } 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; krb5asrep_t *krb5asrep = (krb5asrep_t *) esalt_buf; token_t token; token.signatures_cnt = 1; token.signatures_buf[0] = SIGNATURE_KRB5ASREP; token.len[0] = strlen(SIGNATURE_KRB5ASREP); token.attr[0] = TOKEN_ATTR_FIXED_LENGTH | TOKEN_ATTR_VERIFY_SIGNATURE; /** * $krb5asrep$23$user_principal_name:checksum$edata2 */ if (line_len < 16) return (PARSER_SALT_LENGTH); char *upn_info_start = (char *) line_buf + strlen (SIGNATURE_KRB5ASREP); char *upn_info_stop = strchr ((const char *) upn_info_start, ':'); if (upn_info_stop == NULL) return (PARSER_SEPARATOR_UNMATCHED); upn_info_stop++; // we want the : char included const int upn_info_len = upn_info_stop - upn_info_start; token.token_cnt = 4; token.len[1] = upn_info_len; token.attr[1] = TOKEN_ATTR_FIXED_LENGTH; token.sep[2] = '$'; token.len_min[2] = 32; token.len_max[2] = 32; token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_HEX; token.sep[3] = '$'; token.len_min[3] = 64; token.len_max[3] = 40960; token.attr[3] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_HEX; const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token); if (rc_tokenizer != PARSER_OK) return (rc_tokenizer); const u8 *checksum_pos = token.buf[2]; const u8 *data_pos = token.buf[3]; const int data_len = token.len[3]; memcpy (krb5asrep->account_info, token.buf[1], token.len[1]); krb5asrep->checksum[0] = hex_to_u32 (checksum_pos + 0); krb5asrep->checksum[1] = hex_to_u32 (checksum_pos + 8); krb5asrep->checksum[2] = hex_to_u32 (checksum_pos + 16); krb5asrep->checksum[3] = hex_to_u32 (checksum_pos + 24); u8 *edata_ptr = (u8 *) krb5asrep->edata2; for (int i = 0; i < data_len; i += 2) { const u8 p0 = data_pos[i + 0]; const u8 p1 = data_pos[i + 1]; *edata_ptr++ = hex_convert (p1) << 0 | hex_convert (p0) << 4; } krb5asrep->edata2_len = data_len / 2; /* this is needed for hmac_md5 */ *edata_ptr++ = 0x80; salt->salt_buf[0] = krb5asrep->checksum[0]; salt->salt_buf[1] = krb5asrep->checksum[1]; salt->salt_buf[2] = krb5asrep->checksum[2]; salt->salt_buf[3] = krb5asrep->checksum[3]; salt->salt_len = 16; digest[0] = krb5asrep->checksum[0]; digest[1] = krb5asrep->checksum[1]; digest[2] = krb5asrep->checksum[2]; digest[3] = krb5asrep->checksum[3]; return (PARSER_OK); } int module_hash_encode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const void *digest_buf, MAYBE_UNUSED const salt_t *salt, MAYBE_UNUSED const void *esalt_buf, MAYBE_UNUSED const void *hook_salt_buf, MAYBE_UNUSED const hashinfo_t *hash_info, char *line_buf, MAYBE_UNUSED const int line_size) { const krb5asrep_t *krb5asrep = (const krb5asrep_t *) esalt_buf; char data[5120 * 4 * 2] = { 0 }; for (u32 i = 0, j = 0; i < krb5asrep->edata2_len; i += 1, j += 2) { u8 *ptr_edata2 = (u8 *) krb5asrep->edata2; sprintf (data + j, "%02x", ptr_edata2[i]); } const int line_len = snprintf (line_buf, line_size, "%s%s%08x%08x%08x%08x$%s", SIGNATURE_KRB5ASREP, (char *) krb5asrep->account_info, byte_swap_32 (krb5asrep->checksum[0]), byte_swap_32 (krb5asrep->checksum[1]), byte_swap_32 (krb5asrep->checksum[2]), byte_swap_32 (krb5asrep->checksum[3]), data); 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_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_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_jit_build_options; 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_kernel_threads_max; module_ctx->module_kernel_threads_min = module_kernel_threads_min; 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_pwdump_column; 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_DEFAULT; module_ctx->module_unstable_warning = module_unstable_warning; module_ctx->module_warmup_disable = MODULE_DEFAULT; }