maki-chan / wudecrypt

Decrypts Wii U Disc Image files (.WUD) via the common key and the corresponding disc key for the image

wudecrypt

What is wudecrypt?

wudecrypt (sometimes also written WUDecrypt) is a tool written in C, fully cross-platform compatible, to decrypt Wii U Disk images (.wud).

NOTE: In its current state, wudecrypt is pre-alpha quality. It could crash during the extraction of WUD images, it's not well optimized (will run slowly) and other unwanted side effects could occur. I'm not responsible for any damage wudecrypt will cause on your system.

How to build

Get the sources from Github and use Bakefile to generate a GNU makefile that should work natively on OSX and Linux, but also via MinGW for Windows builds. You could also try to use bakefile to generate project files for Visual Studio on Windows, though I did not test VS building.

For example, to get a working build, you could run the following commands in a shell (assuming you have bakefile working as a global command):

$ git clone https://github.com/maki-chan/wudecrypt.git
$ cd wudecrypt
$ bkl wudecrypt.bkl
$ make

This will create a working wudecrypt executable.

How to use

For wudecrypt to work, you will need a WUD image, the corresponding disc key and the Wii U common key. If you have all of these files, you can run wudecrypt via the following command:

wudecrypt path/to/image.wud /path/to/output /path/to/commonkey.bin /path/to/disckey.bin

wudecrypt has a fifth optional argument which can be SI, UP, GI or GM depending on which partition types you want to extract. To play the decrypted image, extracting only the GM type partitions should be enough. I mostly introduced this function as the extraction takes a very long time and it tries to avoid a whole lot of data you won't need.

License

wudecrypt is released under the GNU AGPLv3 license. More information can be found in the LICENSE file or on the original license page.

wudecrypt uses utarray, published by Troy D. Hanson, licensed under the revised BSD license

wudecrypt uses the SHA-1 implementation from mbed TLS, published by ARM Limited, licensed under the Apache License, Version 2.0

wudecrypt's Issues

Mismatched checksum

First of all: Thank you for your work in this nice tool :). I've waited for the day, that an wud decrypter get's avaiable for linux.

I've tested a dump of ALAPWR, all partitions get extracted correctly, but one file has a sha512 mismatch.

GM000500001014E000000000000000/code/LEGOEmmet.master.rpx should have a sha512 of 12c97157bceaf7708dd6502b369dcea280b5cbc1a4dbd48f9a8a73677fb162999b4af3f2cd1f777b1ef4ab0de4312100998886d1a03a0e8d6ee13a57f49aed57 but got 198842a4eb0a681c971e9407f2bb5be71758319f98831ab75f12295f731b3e79078e3848c46a6ee3d933c719e259ce2d0cd1ccd6cd047d6272c79b123ef265c9.

Tried to extract the partition multiple times with the same result.

Extracting the wud with VGMToolbox r1013 results to the correct sha512 (DiscU isn't able to extract the whole partition at all). Please note: VGMToolbox reported that:

Warning, unmatched partition found: 'GI4B3E9DDE1014E000000000000000'. If this is an original (good) disc image, this could be a bug with VGMToolbox.

File with the mismatching sha512sum is not playable.

Just let me know, if there is something I can do in helping to debug the issue.

Tried wudecrypt only on Archlinux x86_64.

Crashes at [GM] partition

Hi,
When I try to extract a wud file, the program crashes at the [GM] partition, because the offset to read is further than the file size. I'm on Windows 10 x64
log.txt

Add the possibility to use plaintext keys if key file ends with '.txt' extension

For a more convenient use of the program, especially for less experienced users, WUDecrypt should add the possibility to use plaintext key files where the key is not the raw byte representation.

This way, people can just copy & paste their keys into text files without the need of a hex editor or something similar.

Can you make this work with glibc-2.12?

I use CentOS 6.5, and the highest is can use is 2.12, but I see your wudecrypt has to have 2.14. Can you compile it for 2.12?