/** * 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" #include "inc_hash_constants.h" static const u32 ATTACK_EXEC = ATTACK_EXEC_INSIDE_KERNEL; static const u32 DGST_POS0 = 3; static const u32 DGST_POS1 = 7; static const u32 DGST_POS2 = 2; static const u32 DGST_POS3 = 6; static const u32 DGST_SIZE = DGST_SIZE_4_8; static const u32 HASH_CATEGORY = HASH_CATEGORY_DOCUMENTS; static const char *HASH_NAME = "PDF 1.7 Level 3 (Acrobat 9)"; static const u64 KERN_TYPE = 1410; static const u32 OPTI_TYPE = OPTI_TYPE_ZERO_BYTE | OPTI_TYPE_PRECOMPUTE_INIT | OPTI_TYPE_EARLY_SKIP | OPTI_TYPE_NOT_ITERATED | OPTI_TYPE_APPENDED_SALT | OPTI_TYPE_RAW_HASH; static const u64 OPTS_TYPE = OPTS_TYPE_PT_GENERATE_BE | OPTS_TYPE_ST_ADD80 | OPTS_TYPE_ST_ADDBITS15 | OPTS_TYPE_HASH_COPY; static const u32 SALT_TYPE = SALT_TYPE_EMBEDDED; static const char *ST_PASS = "hashcat"; static const char *ST_HASH = "$pdf$5*5*256*-1028*1*16*28562274676426582441147358074521*127*a3aab04cff2c536118870976d768f1fdd445754d6b2dd81fba10bb6e742acd7f2856227467642658244114735807452100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000*127*00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000*32*0000000000000000000000000000000000000000000000000000000000000000*32*0000000000000000000000000000000000000000000000000000000000000000"; 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 pdf { int V; int R; int P; int enc_md; u32 id_buf[8]; u32 u_buf[32]; u32 o_buf[32]; int id_len; int o_len; int u_len; u32 rc4key[2]; u32 rc4data[2]; } pdf_t; static const char *SIGNATURE_PDF = "$pdf$"; static const int ROUNDS_PDF17L8 = 64; 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 (pdf_t); return esalt_size; } u32 module_pw_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 pw_max = 127; // https://www.pdflib.com/knowledge-base/pdf-password-security/encryption/ return pw_max; } 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; pdf_t *pdf = (pdf_t *) esalt_buf; token_t token; token.token_cnt = 16; token.signatures_cnt = 1; token.signatures_buf[0] = SIGNATURE_PDF; token.len[0] = 5; token.attr[0] = TOKEN_ATTR_FIXED_LENGTH | TOKEN_ATTR_VERIFY_SIGNATURE; token.len_min[1] = 1; token.len_max[1] = 1; token.sep[1] = '*'; token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; token.len_min[2] = 1; token.len_max[2] = 1; token.sep[2] = '*'; token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; token.len_min[3] = 3; token.len_max[3] = 3; token.sep[3] = '*'; token.attr[3] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; token.len_min[4] = 1; token.len_max[4] = 6; token.sep[4] = '*'; token.attr[4] = TOKEN_ATTR_VERIFY_LENGTH; token.len_min[5] = 1; token.len_max[5] = 1; token.sep[5] = '*'; token.attr[5] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; token.len_min[6] = 1; token.len_max[6] = 4; token.sep[6] = '*'; token.attr[6] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; token.len_min[7] = 0; token.len_max[7] = 1024; token.sep[7] = '*'; token.attr[7] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_HEX; token.len_min[8] = 1; token.len_max[8] = 4; token.sep[8] = '*'; token.attr[8] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; token.len_min[9] = 0; token.len_max[9] = 1024; token.sep[9] = '*'; token.attr[9] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_HEX; token.len_min[10] = 1; token.len_max[10] = 4; token.sep[10] = '*'; token.attr[10] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; token.len_min[11] = 0; token.len_max[11] = 1024; token.sep[11] = '*'; token.attr[11] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_HEX; token.len_min[12] = 1; token.len_max[12] = 4; token.sep[12] = '*'; token.attr[12] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; token.len_min[13] = 0; token.len_max[13] = 1024; token.sep[13] = '*'; token.attr[13] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_HEX; token.len_min[14] = 1; token.len_max[14] = 4; token.sep[14] = '*'; token.attr[14] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_DIGIT; token.len_min[15] = 0; token.len_max[15] = 1024; token.sep[15] = '*'; token.attr[15] = 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 *V_pos = token.buf[1]; const u8 *R_pos = token.buf[2]; const u8 *bits_pos = token.buf[3]; const u8 *enc_md_pos = token.buf[5]; const u8 *u_len_pos = token.buf[8]; const u8 *u_buf_pos = token.buf[9]; // validate data const int V = strtol ((const char *) V_pos, NULL, 10); const int R = strtol ((const char *) R_pos, NULL, 10); int vr_ok = 0; if ((V == 5) && (R == 5)) vr_ok = 1; if ((V == 5) && (R == 6)) vr_ok = 1; if (vr_ok == 0) return (PARSER_SALT_VALUE); const int bits = strtol ((const char *) bits_pos, NULL, 10); if (bits != 256) return (PARSER_SALT_VALUE); int enc_md = strtol ((const char *) enc_md_pos, NULL, 10); if ((enc_md != 0) && (enc_md != 1)) return (PARSER_SALT_VALUE); const u32 u_len = hc_strtoul ((const char *) u_len_pos, NULL, 10); // copy data to esalt if (u_len < 40) return (PARSER_SALT_VALUE); if (is_valid_hex_string (u_buf_pos, 80) == false) return (PARSER_SALT_ENCODING); for (int i = 0, j = 0; i < 8 + 2; i += 1, j += 8) { pdf->u_buf[i] = hex_to_u32 ((const u8 *) &u_buf_pos[j]); } salt->salt_buf[0] = pdf->u_buf[8]; salt->salt_buf[1] = pdf->u_buf[9]; salt->salt_len = 8; salt->salt_iter = ROUNDS_PDF17L8; digest[0] = byte_swap_32 (pdf->u_buf[0]); digest[1] = byte_swap_32 (pdf->u_buf[1]); digest[2] = byte_swap_32 (pdf->u_buf[2]); digest[3] = byte_swap_32 (pdf->u_buf[3]); digest[4] = byte_swap_32 (pdf->u_buf[4]); digest[5] = byte_swap_32 (pdf->u_buf[5]); digest[6] = byte_swap_32 (pdf->u_buf[6]); digest[7] = byte_swap_32 (pdf->u_buf[7]); // extra if (hashconfig->opti_type & OPTI_TYPE_OPTIMIZED_KERNEL) { digest[0] -= SHA256M_A; digest[1] -= SHA256M_B; digest[2] -= SHA256M_C; digest[3] -= SHA256M_D; digest[4] -= SHA256M_E; digest[5] -= SHA256M_F; digest[6] -= SHA256M_G; digest[7] -= SHA256M_H; } salt->salt_buf[2] = 0x80; 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 int line_len = snprintf (line_buf, line_size, "%s", hash_info->orighash); 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_outfile = 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 = 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_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_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_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_pw_max; 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_DEFAULT; module_ctx->module_warmup_disable = MODULE_DEFAULT; }