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      = 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_IMS;
  static const char *HASH_NAME      = "Telegram Mobile App Passcode (SHA256)";
  static const u64   KERN_TYPE      = 22300;
  static const u32   OPTI_TYPE      = OPTI_TYPE_ZERO_BYTE
                                    | OPTI_TYPE_PRECOMPUTE_INIT
                                    | OPTI_TYPE_EARLY_SKIP
                                    | OPTI_TYPE_NOT_ITERATED
                                    | OPTI_TYPE_RAW_HASH;
  static const u64   OPTS_TYPE      = OPTS_TYPE_STOCK_MODULE
                                    | OPTS_TYPE_PT_GENERATE_BE;
  static const u32   SALT_TYPE      = SALT_TYPE_GENERIC;
  static const char *ST_PASS        = "hashcat";
  static const char *ST_HASH        = "$telegram$0*518c001aeb3b4ae96c6173be4cebe60a85f67b1e087b045935849e2f815b5e41*25184098058621950709328221838128";
  
  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;         }
  
  static const char *SIGNATURE_TELEGRAM = "$telegram$";
  
  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;
  
    hc_token_t token;
  
    token.token_cnt  = 4;
  
    token.signatures_cnt    = 1;
    token.signatures_buf[0] = SIGNATURE_TELEGRAM;
  
    token.len[0]     = 10;
    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] = 64;
    token.len_max[2] = 64;
    token.sep[2]     = '*';
    token.attr[2]    = TOKEN_ATTR_VERIFY_LENGTH
                     | TOKEN_ATTR_VERIFY_HEX;
  
    token.len_min[3] = 32;
    token.len_max[3] = 32;
    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 *version_pos = token.buf[1];
  
    if (version_pos[0] != '0') return (PARSER_SALT_VALUE);
  
    const u8 *hash_pos = token.buf[2];
  
    digest[0] = hex_to_u32 (hash_pos +  0);
    digest[1] = hex_to_u32 (hash_pos +  8);
    digest[2] = hex_to_u32 (hash_pos + 16);
    digest[3] = hex_to_u32 (hash_pos + 24);
    digest[4] = hex_to_u32 (hash_pos + 32);
    digest[5] = hex_to_u32 (hash_pos + 40);
    digest[6] = hex_to_u32 (hash_pos + 48);
    digest[7] = hex_to_u32 (hash_pos + 56);
  
    digest[0] = byte_swap_32 (digest[0]);
    digest[1] = byte_swap_32 (digest[1]);
    digest[2] = byte_swap_32 (digest[2]);
    digest[3] = byte_swap_32 (digest[3]);
    digest[4] = byte_swap_32 (digest[4]);
    digest[5] = byte_swap_32 (digest[5]);
    digest[6] = byte_swap_32 (digest[6]);
    digest[7] = byte_swap_32 (digest[7]);
  
    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;
    }
  
    const u8 *salt_pos = token.buf[3];
  
    salt->salt_buf[0] = hex_to_u32 (salt_pos +  0);
    salt->salt_buf[1] = hex_to_u32 (salt_pos +  8);
    salt->salt_buf[2] = hex_to_u32 (salt_pos + 16);
    salt->salt_buf[3] = hex_to_u32 (salt_pos + 24);
  
    salt->salt_len = 16;
  
    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;
  
    // we can not change anything in the original buffer, otherwise destroying sorting
    // therefore create some local buffer
  
    u32 tmp[8];
  
    tmp[0] = digest[0];
    tmp[1] = digest[1];
    tmp[2] = digest[2];
    tmp[3] = digest[3];
    tmp[4] = digest[4];
    tmp[5] = digest[5];
    tmp[6] = digest[6];
    tmp[7] = digest[7];
  
    if (hashconfig->opti_type & OPTI_TYPE_OPTIMIZED_KERNEL)
    {
      tmp[0] += SHA256M_A;
      tmp[1] += SHA256M_B;
      tmp[2] += SHA256M_C;
      tmp[3] += SHA256M_D;
      tmp[4] += SHA256M_E;
      tmp[5] += SHA256M_F;
      tmp[6] += SHA256M_G;
      tmp[7] += SHA256M_H;
    }
  
    const int line_len = snprintf (line_buf, line_size, "%s%i*%08x%08x%08x%08x%08x%08x%08x%08x*%08x%08x%08x%08x",
      SIGNATURE_TELEGRAM,
      0,
      tmp[0],
      tmp[1],
      tmp[2],
      tmp[3],
      tmp[4],
      tmp[5],
      tmp[6],
      tmp[7],
      byte_swap_32 (salt->salt_buf[0]),
      byte_swap_32 (salt->salt_buf[1]),
      byte_swap_32 (salt->salt_buf[2]),
      byte_swap_32 (salt->salt_buf[3]));
  
    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_DEFAULT;
    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_DEFAULT;
    module_ctx->module_unstable_warning         = MODULE_DEFAULT;
    module_ctx->module_warmup_disable           = MODULE_DEFAULT;
  }
  