Here is just a simple program that uses the Jnuslib. The usage should be pretty self explaining.

STILL EXPERIMENTAL. Bugs may occur, please report them!

Features

• Compressing .wud and splitted wud files into .wux
• Decompressing a .wux back to .wud
• Extracting from the GI or GM partition
• Extracting .app/-h3/.tmd/.cert/.tik files from a .wud/.wux or splitted .wud
• Extracting just the contents/hashes/ticket.
• Decrypting the full game partition from a .wud/.wux or splitted .wud
• Decrypting specific files the game partition from a .wud/.wux or splitted .wud
• Verify a image / Compare two images (for example a .wud with .wux to make sure its legit)

Usage

Optional:

• Copy the common.key into the folder next to the .jar or provide the key via the command line
• Copy the game.key into the folder next to the wud image or provide the key via the command line

usage:
 -commonkey <WiiU common key>           Optional. HexString. Will be used if no "common.key" in the
                                        folder of this .jar is found
 -dev                                   Required when using discs without a titlekey.
 -compress                              Compresses the input to a .wux file.
 -decompress                            Decompresses the input to a .wud file.
 -decrypt                               Decrypts full the game partition of the given wud.
 -decryptFile <regular expression>      Decrypts files of the game partition that match the regular
                                        expression of the given wud.
 -extract <all|content|ticket|hashes>   Extracts files from the game partition of the given wud
                                        (Arguments optional)
 -help                                  shows this text
 -in <input file>                       Input file. Can be a .wux, .wud or a game_part1.wud
 -noVerify                              Disables verification after (de)compressing
 -out <output path>                     The path where the result will be saved
 -overwrite                             Optional. Overwrites existing files
 -titlekey <WUD title key>              Optional. HexString. Will be used if no "game.key" in the
                                        folder of the wud image is found
 -verify <wudimage1|wudimage2>          Compares two WUD images to find differences

Examples

Getting .app files from an Wii U Image:

Extract .app etc. from a WUD:

Get .app files from "game.wud" to the folder "extracted" with game.key in the same folder

java -jar JWUDTool.jar -in "game.wud" -out "extracted" -extract all

Extract .app etc. from a WUX (compressed WUD):

Get .app files from "game.wux" to the folder "extracted" with game.key in the same folder

java -jar JWUDTool.jar -in "game.wux" -out "extracted" -extract all

Extract .app etc. from a splitted WUD (dump with wudump):

Get .app files from "game_part1.wud" to the folder "extracted" with game.key in the same folder

java -jar JWUDTool.jar -in "game_part1.wud" -out "extracted" -extract all

Compressing into .wux examples:

Compress a .wud to .wux:[/B]

Compress a "game.wud" to "game.wux"

java -jar JWUDTool.jar -in "game.wud" -compress

Compress a splitted game_part1.wud to .wux:

Compress a "game_part1.wud" from a wudump dump to "game.wux"

java -jar JWUDTool.jar -in "game_part1.wud" -compress

Decryption game files examples:

Decrypt a WUD image to game files

Input can be a .wud, game_part1.wud or a .wux. This decrypted the full game partition. Given a game.key and common.key in the same folder.

java -jar JWUDTool.jar -in "game.wud" -decrypt //WUD
java -jar JWUDTool.jar -in "game.wux" -decrypt //WUX
java -jar JWUDTool.jar -in "game_part1.wud" -decrypt //game_part1

Decrypt a single file from an WUD

Input can be a .wud, game_part1.wud or a .wux. This decrypted the full game partition. Given a game.key and common.key in the same folder.

Extracting the code/app.xml file.

java -jar JWUDTool.jar -in "game.wud" -decryptFile /code/app.xml
java -jar JWUDTool.jar -in "game.wux" -decryptFile /code/app.xml
java -jar JWUDTool.jar -in "game_part1.wud" -decryptFile /code/app.xml

Extracting all .bfstm files.

java -jar JWUDTool.jar -in "game.wud" -decryptFile /.*.bfstm
java -jar JWUDTool.jar -in "game.wux"  -decryptFile /.*.bfstm
java -jar JWUDTool.jar -in "game_part1.wud" -decryptFile /.*.bfstm

Extracting the folder /content/Sound

java -jar JWUDTool.jar -in "game.wud" -decryptFile /content/Sound/.*
java -jar JWUDTool.jar -in "game.wux"  -decryptFile /content/Sound/.*
java -jar JWUDTool.jar -in "game_part1.wud" -decryptFile /content/Sound/.*

Compiling

clean assembly:single package

Credits

Maschell

Thanks to:
Crediar for CDecrypt
All people who have contributed to vgmtoolbox
Exzap for the .wux file format
FIX94 for wudump
The creators of lombok.