/** * Author......: Netherlands Forensic Institute * 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_PRIVATE_KEY; static const char *HASH_NAME = "GPG (AES-128/AES-256 (SHA-1($pass)))"; static const u64 KERN_TYPE = 17010; static const u32 OPTI_TYPE = OPTI_TYPE_ZERO_BYTE; static const u64 OPTS_TYPE = OPTS_TYPE_STOCK_MODULE | OPTS_TYPE_PT_GENERATE_LE | OPTS_TYPE_LOOP_PREPARE | OPTS_TYPE_AUX1 | OPTS_TYPE_AUX2 | OPTS_TYPE_DEEP_COMP_KERNEL; static const u32 SALT_TYPE = SALT_TYPE_EMBEDDED; static const char *ST_PASS = "hashcat"; static const char *ST_HASH = "$gpg$*1*348*1024*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*3*254*2*7*16*a47ef38987beab0a0b9bfe74b72822e8*65536*1f5c90d9820997db"; 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 gpg { u32 cipher_algo; u32 iv[4]; u32 modulus_size; u32 encrypted_data[384]; u32 encrypted_data_size; } gpg_t; typedef struct gpg_tmp { u32 salted_pw_block[80]; u32 salted_pw_block_len; u32 h[10]; u32 w0[4]; u32 w1[4]; u32 w2[4]; u32 w3[4]; u32 len; } gpg_tmp_t; static const char *SIGNATURE_GPG = "$gpg$"; 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 (gpg_t); return esalt_size; } 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 (gpg_tmp_t); return tmp_size; } bool module_hlfmt_disable (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 bool hlfmt_disable = true; return hlfmt_disable; } u32 module_kernel_loops_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_loops_min = 1024; return kernel_loops_min; } u32 module_kernel_loops_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_loops_max = 65536; return kernel_loops_max; } u32 module_deep_comp_kernel (MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const u32 salt_pos, MAYBE_UNUSED const u32 digest_pos) { const u32 digests_offset = hashes->salts_buf[salt_pos].digests_offset; gpg_t *gpgs = (gpg_t *) hashes->esalts_buf; gpg_t *gpg = &gpgs[digests_offset + digest_pos]; if (gpg->cipher_algo == 7) { return KERN_RUN_AUX1; } else if (gpg->cipher_algo == 9) { return KERN_RUN_AUX2; } return 0; } 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; gpg_t *gpg = (gpg_t *) esalt_buf; hc_token_t token; memset (&token, 0, sizeof (hc_token_t)); token.token_cnt = 13; // signature $gpg$ token.signatures_cnt = 1; token.signatures_buf[0] = SIGNATURE_GPG; // signature $gpg$ token.sep[0] = '*'; token.len[0] = 5; token.attr[0] = TOKEN_ATTR_FIXED_LENGTH | TOKEN_ATTR_VERIFY_SIGNATURE; // "1" -- unknown option token.sep[1] = '*'; token.len[1] = 1; token.attr[1] = TOKEN_ATTR_FIXED_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; // size of the encrypted data in bytes token.sep[2] = '*'; token.len_min[2] = 3; token.len_max[2] = 4; token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; // size of the key: 1024, 2048, 4096, etc. token.sep[3] = '*'; token.len_min[3] = 3; token.len_max[3] = 4; token.attr[3] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; // encrypted key -- twice the amount of byte because its interpreted as characters token.sep[4] = '*'; token.len_min[4] = 256; token.len_max[4] = 3072; token.attr[4] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_HEX; // "3" - String2Key parameter token.sep[5] = '*'; token.len[5] = 1; token.attr[5] = TOKEN_ATTR_FIXED_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; // "254" - String2Key parameters token.sep[6] = '*'; token.len[6] = 3; token.attr[6] = TOKEN_ATTR_FIXED_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; // "2" - String2Key parameters token.sep[7] = '*'; token.len[7] = 1; token.attr[7] = TOKEN_ATTR_FIXED_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; // cipher mode: 7 or 9 token.sep[8] = '*'; token.len[8] = 1; token.attr[8] = TOKEN_ATTR_FIXED_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; // size of initial vector in bytes: 16 token.sep[9] = '*'; token.len[9] = 2; token.attr[9] = TOKEN_ATTR_FIXED_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; // initial vector - twice the amount of bytes because its interpreted as characters token.sep[10] = '*'; token.len[10] = 32; token.attr[10] = TOKEN_ATTR_FIXED_LENGTH | TOKEN_ATTR_VERIFY_HEX; // iteration count token.sep[11] = '*'; token.len_min[11] = 1; token.len_max[11] = 8; token.attr[11] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; // salt - 8 bytes / 16 characters token.len[12] = 16; token.attr[12] = 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); // Modulus size const int modulus_size = hc_strtoul ((const char *) token.buf[3], NULL, 10); if ((modulus_size < 256) || (modulus_size > 16384)) return (PARSER_SALT_LENGTH); gpg->modulus_size = modulus_size; // Encrypted data const int enc_data_size = hc_strtoul ((const char *) token.buf[2], NULL, 10); const int encrypted_data_size = hex_decode (token.buf[4], token.len[4], (u8 *) gpg->encrypted_data); if (enc_data_size != encrypted_data_size) return (PARSER_CT_LENGTH); gpg->encrypted_data_size = encrypted_data_size; // Check String2Key parameters if (hc_strtoul ((const char *) token.buf[5], NULL, 10) != 3) return (PARSER_HASH_VALUE); if (hc_strtoul ((const char *) token.buf[6], NULL, 10) != 254) return (PARSER_HASH_VALUE); if (hc_strtoul ((const char *) token.buf[7], NULL, 10) != 2) return (PARSER_HASH_VALUE); // Cipher algo const int cipher_algo = hc_strtoul ((const char *) token.buf[8], NULL, 10); if ((cipher_algo != 7) && (cipher_algo != 9)) return (PARSER_CIPHER); gpg->cipher_algo = cipher_algo; // IV (size) if (hc_strtoul ((const char *) token.buf[9], NULL, 10) != sizeof (gpg->iv)) return (PARSER_IV_LENGTH); const int iv_size = hex_decode (token.buf[10], token.len[10], (u8 *) gpg->iv); if (iv_size != sizeof (gpg->iv)) return (PARSER_IV_LENGTH); // Salt Iter const u32 salt_iter = hc_strtoul ((const char *) token.buf[11], NULL, 10); if (salt_iter < 8 || salt_iter > 65011712) return (PARSER_SALT_ITERATION); salt->salt_iter = salt_iter; // Salt Value salt->salt_repeats = gpg->cipher_algo == 7 ? 0 : 1; // "minus one" salt->salt_len = hex_decode (token.buf[12], token.len[12], (u8 *) salt->salt_buf); if (salt->salt_len != 8) return (PARSER_SALT_LENGTH); // hash fake digest[0] = gpg->iv[0]; digest[1] = gpg->iv[1]; digest[2] = gpg->iv[2]; digest[3] = gpg->iv[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 gpg_t *gpg = (const gpg_t *) esalt_buf; u8 encrypted_data[(384 * 8) + 1]; hex_encode ((const u8 *) gpg->encrypted_data, gpg->encrypted_data_size, (u8 *) encrypted_data); const int line_len = snprintf (line_buf, line_size, "%s*%d*%d*%d*%s*%d*%d*%d*%d*%d*%08x%08x%08x%08x*%d*%08x%08x", SIGNATURE_GPG, 1, /* unknown field */ gpg->encrypted_data_size, gpg->modulus_size, encrypted_data, 3, /* version (major?) */ 254, /* version (minor?) */ 2, /* key cipher (sha-1) */ gpg->cipher_algo, 16, /*iv_size*/ byte_swap_32 (gpg->iv[0]), byte_swap_32 (gpg->iv[1]), byte_swap_32 (gpg->iv[2]), byte_swap_32 (gpg->iv[3]), salt->salt_iter, byte_swap_32 (salt->salt_buf[0]), byte_swap_32 (salt->salt_buf[1])); 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_charset = MODULE_DEFAULT; module_ctx->module_benchmark_salt = MODULE_DEFAULT; module_ctx->module_build_plain_postprocess = MODULE_DEFAULT; module_ctx->module_deep_comp_kernel = module_deep_comp_kernel; 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_hlfmt_disable; 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_kernel_loops_max; module_ctx->module_kernel_loops_min = module_kernel_loops_min; 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_DEFAULT; module_ctx->module_warmup_disable = MODULE_DEFAULT; }