Wii Menu Decompilation

This is a Work In Progress decompilation of the Wii Menu.

Supported versions (currently):

• 4.3 (USA)

Dependencies

TODO: build for MAC OS
The following dependencies are required to build the decompilation:

• Git (optional)
• Python 3
• GCC

Below is how to install the dependencies that is depending on your Operating System.

Windows

If you are using WSL, you should follow the Linux section instead.

With MSYS2, this is how you install the dependencies

pacman -S git make mingw-w64-x86_64-gcc mingw-w64-x86_64-python mingw-w64-i686-gcc mingw-w64-i686-python

If you do not have either MSYS2 or WSL then make sure that GCC and Make are in PATH environment variable.
You will also need to install Python 3 yourself here (make sure that python.exe is in your PATH variable).

Linux

For linux users, this is how you install the dependencies depending on your distribution

For Ubuntu/Debian

sudo apt install build-essential git python3

For Arch Linux

sudo pacman -S base-devel python git

Building the Decompilation

NOTE: This will not compile a working Wii Menu yet!

• If you have git, clone the decompilation repository by inputting this to your terminal:

  git clone https://github.com/koopthekoopa/wii-ipl.git
  

  • Otherwise download the repository by clicking on Code then Download ZIP then extract the .zip contents

• You will need a copy of the Wii Menu's Executable from it's WAD file.

  • Use your preferred WAD Extractor (I recommend ShowMiiWADs, it works fine with Wine) and use it to extract the Wii Menu WAD file.
  • Then copy the executable file 00000008.app to the decompilation directory and rename it to base.<version>.app
    • Make sure the version on the filename does not include the decimal at the middle (for example 4.3U should be 43U)
    • Check to make sure the file matches with the SHA-1 Sums!

• You will need to prepare for build. To do that you need to type in:

  make prepare VERSION=<version>
  

• You are now ready to build! To build you need to type in

  make VERSION=<version>
  

  • The output should be ipl.<version>.app in the build folder.

If you want to compile another version, you have to prepare for build again to do so.

Sums

File	SHA-1
ipl.43J.app (Wii Menu 4.3J)	c94c8e671854d56fa2abd4c4c886e6c62a2c7f0e
ipl.43U.app (Wii Menu 4.3U)	26116613f624061ba99c8d1a299aaa6efa85670d
ipl.43E.app (Wii Menu 4.3E)	2ebea6ed22473857ed64b12daa71ae2d1ed61708

Tools used

decomp-toolkit - A tool that can do a lot and will make decompiling GameCube/Wii games easier and better.
objdiff - Used to check whenever if the compiled object is matching or not.
Ghidra - Used to load executables and output a rough decompilaton of a function.

Thanks to the people who worked on these tools!!!