XeNTaX

Code: Select all

The whole file is encoded, this is the way to decode it:
  ... read the whole file to the Buffer, and ...
  For I := 0 To FILE_SIZE - 1 Do
    Buffer[I] := Buffer[I] Xor (3*I) Xor 166;

 The (possible) structure of the decoded PAK file:
-> Header: (8 bytes)
    - ID : DWORD;   // $BAC04AC0
    - Zero : DWORD; // 0
-> Directory:
     REPEAT
       - Flag: Byte;
       if Flag==0
          - FileNameLen : Byte;
          - FileName : Array Of Char; // example: 'images\backgrounds\background_01.jpg'
          - FileSize : DWORD;
          - FileTime : TFileTime; // 8 bytes long, Windows _FILETIME format
       else if Flag==$80
         END_OF_THE_DIRECTORY
       endif
     UNTIL END_OF_THE_DIRECTORY  
-> File_Data

Code: Select all

-> Header: (44 bytes = $2c)
     -ID : Array[0..3] Of Char; // 'ASDb'
     -Something : DWORD; // nr of files???
     -DirectoryStartPos : DWORD; // Points to the end of the file
     -Unknown1 : DWORD; // 03 00 31 07
     -Unknown2 : DWORD; // 08 00 44 53
     -Unknown3 : DWORD; // 00 00 34 86
     -Unknown4 : DWORD; // 88 85 B8 3A
     -Unknown5 : DWORD; // E3 40 55 3F
     -Unknown6 : DWORD; // FB 61 E1 2A
     -Unknown7 : DWORD; // CB 6D 29 52
     -Unknown8 : DWORD; // E3 C9 AD F0
-> SomethingAfterHeader (12 bytes)
     -SomeBytes : Array[0..11] Of Byte; // 40 87 00 00 00 00 00 00 00 00 00 00
-> FILE_DATA, ZLIB compression???
-> Directory, for each file:
      -FileNameLen : DWORD;
      -FileName : Array Of Char;
      -RelativeStartPos : DWORD; // relative from the Header's end, so add 44 to this value to get the real filestartpos