XexInfoTable - EurAsiaWiki

robinsod @ http://www.xboxhacker.net/index.php?topic=7949.0

We have started to look at the decryption, decompression and (optionally) patching of XEX files.
Some of this info is from the free60 wiki, some is from others and some is my own observations.
This is very preliminary and if you can provide any corrections or additions please post them

See http://www.free60.org/wiki/XEX#Structure_of_the_XEX_File

Five Info Classes 0,1,2,3,4

Class 0 Initialization Info
InfoType 0x01   Unknown, always 0x10000000?
InfoType 0x02   Short Name/Application Class? (media/skin/gp)
InfoType 0x03   Size and Hash Info for first compressed section
InfoType 0x05   Patch Version Info (base version and patched version). I have only seen this one in xexp files
InfoType 0x80   Path and Filename (DeviceFlashApp.xex)

Class 1 Unknown Info
InfoType 0x01   Unknown, seems related to the Image Load Address
InfoType 0x02   Image Load Address
InfoType 0x03   Imports Functions list, a list of executables and dynamic linking tables
InfoType 0x80   Unknown, seems to be size * dwords

Class 2 Execution Info
InfoType 0x00   Libraries, a list of libraries & version numbers

Class 3 Library Loading and Mapping Info
InfoType 0x00   Unknown

Class 4 Unknown Info
InfoType 0x00   Unknown, seems to be size * dwords & related to version number

Takires:

 Class 1 Type 1 is the program entry point.

roninsod:

 In some newer XEXs (with patches applied) I have seen Class 1 Type 83 Infos which point to a dll name ie bootanim.xex -> "bootanim.dll"

TheSpecialist:

 Class 0
 InfoType 0x03   Size and Hash Info for first compressed section =>

 at 0x6 in this table is either 0x0001 or 0x0002:

 0x0001 = data is not compressed, 0x0002  data is compressed.

Retrieved from "http://www.eurasia.nu/wiki/index.php/XexInfoTable"

This page has been accessed 730 times. This page was last modified 08:00, 16 February 2010.