text: /**
   * 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_DOCUMENTS;
  static const char *HASH_NAME      = "MS Office <= 2003 $3/$4, SHA1 + RC4";
  static const u64   KERN_TYPE      = 9800;
  static const u32   OPTI_TYPE      = OPTI_TYPE_ZERO_BYTE
                                    | OPTI_TYPE_PRECOMPUTE_INIT
                                    | OPTI_TYPE_NOT_ITERATED;
  static const u64   OPTS_TYPE      = OPTS_TYPE_PT_GENERATE_BE
                                    | OPTS_TYPE_PT_ADD80
                                    | OPTS_TYPE_PT_UTF16LE;
  static const u32   SALT_TYPE      = SALT_TYPE_EMBEDDED;
  static const char *ST_PASS        = "hashcat";
  static const char *ST_HASH        = "$oldoffice$3*83328705222323020515404251156288*2855956a165ff6511bc7f4cd77b9e101*941861655e73a09c40f7b1e9dfd0c256ed285acd";
  
  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 oldoffice34
  {
    u32 version;
    u32 encryptedVerifier[4];
    u32 encryptedVerifierHash[5];
    u32 secondBlockData[8];
    u32 secondBlockLen;
    u32 rc4key[2];
  
  } oldoffice34_t;
  
  static const char *SIGNATURE_OLDOFFICE  = "$oldoffice$";
  static const char *SIGNATURE_OLDOFFICE3 = "$oldoffice$3";
  static const char *SIGNATURE_OLDOFFICE4 = "$oldoffice$4";
  
  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;
  
    u32 native_threads = 0;
  
    if (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU)
    {
      native_threads = 1;
    }
    else if (device_param->opencl_device_type & CL_DEVICE_TYPE_GPU)
    {
      if (device_param->device_local_mem_size < 49152)
      {
        native_threads = MIN (device_param->kernel_preferred_wgs_multiple, 32); // We can't just set 32, because Intel GPU need 8
      }
      else
      {
        native_threads = device_param->kernel_preferred_wgs_multiple;
      }
    }
  
    hc_asprintf (&jit_build_options, "-D FIXED_LOCAL_SIZE=%u -D _unroll", native_threads);
  
    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 (oldoffice34_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 = 15; // https://msdn.microsoft.com/en-us/library/dd772916(v=office.12).aspx
  
    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;
  
    oldoffice34_t *oldoffice34 = (oldoffice34_t *) esalt_buf;
  
    token_t token;
  
    token.token_cnt  = 5;
  
    token.signatures_cnt    = 2;
    token.signatures_buf[0] = SIGNATURE_OLDOFFICE3;
    token.signatures_buf[1] = SIGNATURE_OLDOFFICE4;
  
    token.len[0]     = 11;
    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] = 32;
    token.len_max[2] = 32;
    token.sep[2]     = '*';
    token.attr[2]    = TOKEN_ATTR_VERIFY_LENGTH;
  
    token.len_min[3] = 32;
    token.len_max[3] = 32;
    token.sep[3]     = '*';
    token.attr[3]    = TOKEN_ATTR_VERIFY_LENGTH
                     | TOKEN_ATTR_VERIFY_HEX;
  
    token.len_min[4] = 40;
    token.len_max[4] = 40;
    token.sep[4]     = '*';
    token.attr[4]    = TOKEN_ATTR_VERIFY_LENGTH
                     | TOKEN_ATTR_VERIFY_HEX;
  
    int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
  
    // alternative format (with second block data):
  
    if (rc_tokenizer == PARSER_TOKEN_LENGTH) // or just rc_tokenizer != PARSER_OK
    {
      token.token_cnt = 6;
  
      token.len_min[5] = 64;
      token.len_max[5] = 64;
      token.sep[5]     = '*';
      token.attr[5]    = TOKEN_ATTR_VERIFY_LENGTH
                       | TOKEN_ATTR_VERIFY_HEX;
  
      rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
    }
  
    if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
  
    const u8 *version_pos               = token.buf[1];
    const u8 *osalt_pos                 = token.buf[2];
    const u8 *encryptedVerifier_pos     = token.buf[3];
    const u8 *encryptedVerifierHash_pos = token.buf[4];
  
    // esalt
  
    const u32 version = *version_pos - 0x30;
  
    if (version != 3 && version != 4) return (PARSER_SALT_VALUE);
  
    oldoffice34->version = version;
  
    oldoffice34->encryptedVerifier[0] = hex_to_u32 (encryptedVerifier_pos +  0);
    oldoffice34->encryptedVerifier[1] = hex_to_u32 (encryptedVerifier_pos +  8);
    oldoffice34->encryptedVerifier[2] = hex_to_u32 (encryptedVerifier_pos + 16);
    oldoffice34->encryptedVerifier[3] = hex_to_u32 (encryptedVerifier_pos + 24);
  
    oldoffice34->encryptedVerifierHash[0] = hex_to_u32 (encryptedVerifierHash_pos +  0);
    oldoffice34->encryptedVerifierHash[1] = hex_to_u32 (encryptedVerifierHash_pos +  8);
    oldoffice34->encryptedVerifierHash[2] = hex_to_u32 (encryptedVerifierHash_pos + 16);
    oldoffice34->encryptedVerifierHash[3] = hex_to_u32 (encryptedVerifierHash_pos + 24);
    oldoffice34->encryptedVerifierHash[4] = hex_to_u32 (encryptedVerifierHash_pos + 32);
  
    // second block (if needed)
  
    oldoffice34->secondBlockLen = 0;
  
    if (token.token_cnt == 6)
    {
      oldoffice34->secondBlockData[0] = 0;
  
      const u8 *second_block_data = token.buf[5];
  
      for (int i = 0, j = 0; i < 8; i += 1, j += 8)
      {
        oldoffice34->secondBlockData[i] = hex_to_u32 (second_block_data + j);
      }
  
      oldoffice34->secondBlockLen = 64;
    }
  
    // salt
  
    salt->salt_len = 16;
  
    salt->salt_buf[ 0] = hex_to_u32 (osalt_pos +  0);
    salt->salt_buf[ 1] = hex_to_u32 (osalt_pos +  8);
    salt->salt_buf[ 2] = hex_to_u32 (osalt_pos + 16);
    salt->salt_buf[ 3] = hex_to_u32 (osalt_pos + 24);
  
    salt->salt_buf[ 0] = byte_swap_32 (salt->salt_buf[0]);
    salt->salt_buf[ 1] = byte_swap_32 (salt->salt_buf[1]);
    salt->salt_buf[ 2] = byte_swap_32 (salt->salt_buf[2]);
    salt->salt_buf[ 3] = byte_swap_32 (salt->salt_buf[3]);
  
    // this is a workaround as office produces multiple documents with the same salt
  
    salt->salt_buf[ 4] = oldoffice34->encryptedVerifier[0];
    salt->salt_buf[ 5] = oldoffice34->encryptedVerifier[1];
    salt->salt_buf[ 6] = oldoffice34->encryptedVerifier[2];
    salt->salt_buf[ 7] = oldoffice34->encryptedVerifier[3];
    salt->salt_buf[ 8] = oldoffice34->encryptedVerifierHash[0];
    salt->salt_buf[ 9] = oldoffice34->encryptedVerifierHash[1];
    salt->salt_buf[10] = oldoffice34->encryptedVerifierHash[2];
    salt->salt_buf[11] = oldoffice34->encryptedVerifierHash[3];
  
    salt->salt_len += 32;
  
    /**
     * digest
     */
  
    digest[0] = oldoffice34->encryptedVerifierHash[0];
    digest[1] = oldoffice34->encryptedVerifierHash[1];
    digest[2] = oldoffice34->encryptedVerifierHash[2];
    digest[3] = oldoffice34->encryptedVerifierHash[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 oldoffice34_t *oldoffice34 = (const oldoffice34_t *) esalt_buf;
  
    u8 secondBlockData[64 + 1 + 1];
  
    memset (secondBlockData, 0, sizeof (secondBlockData));
  
    if (oldoffice34->secondBlockLen != 0)
    {
      secondBlockData[0] = '*';
  
      u8 *ptr = (u8 *) oldoffice34->secondBlockData;
  
      for (int i = 0, j = 1; i < 32; i += 1, j += 2)
      {
        u8_to_hex (ptr[i], secondBlockData + j);
      }
    }
  
    const int line_len = snprintf (line_buf, line_size, "%s%u*%08x%08x%08x%08x*%08x%08x%08x%08x*%08x%08x%08x%08x%08x%s",
      SIGNATURE_OLDOFFICE,
      oldoffice34->version,
      salt->salt_buf[0],
      salt->salt_buf[1],
      salt->salt_buf[2],
      salt->salt_buf[3],
      byte_swap_32 (oldoffice34->encryptedVerifier[0]),
      byte_swap_32 (oldoffice34->encryptedVerifier[1]),
      byte_swap_32 (oldoffice34->encryptedVerifier[2]),
      byte_swap_32 (oldoffice34->encryptedVerifier[3]),
      byte_swap_32 (oldoffice34->encryptedVerifierHash[0]),
      byte_swap_32 (oldoffice34->encryptedVerifierHash[1]),
      byte_swap_32 (oldoffice34->encryptedVerifierHash[2]),
      byte_swap_32 (oldoffice34->encryptedVerifierHash[3]),
      byte_swap_32 (oldoffice34->encryptedVerifierHash[4]),
      secondBlockData);
  
    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_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_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_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_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;
  }
  