User:CM360/sandbox/Wii U Creating homebrew channels

What You Need

• The latest release of phacoxcll's CDecrypt fork (the CDecrypt.zip file)
  • Only a Windows build is provided, Mac and Linux users may need to manually compile the source code.
• The latest release of NUSPacker (direct download)
  • NUSPacker requires that you have Java installed on your system to work.
• An image editor that supports the .tga image format
  • These instructions will use paint.net.
• The MetaVerify.py script (click "Download ZIP" on the GitHub page to download)
  • This script requires that you have Python 3.7.4+ installed on your system to work.
• The Homebrew Launcher Channel v2.1 (direct download)
• The .rpx file of whichever homebrew program you are making a channel for
• The Wii U Common Key
  • This is in the otp.bin file from your console's NAND dump. Extract it using this Common Key Extractor. Copy the key and save it in a text file somewhere; it will be needed later.
  • If you cannot get the extractor to work, the key can also be obtained by opening otp.bin in a hex editor, and is located at offsets 0x000000E0 to 0x000000EF. If extracted correctly, it should be a 32-character long hexadecimal number starting with D7B0.

Section I - CDecrypt

1. Unzip the Homebrew Launcher Channel (will be referred to as the HBLC from here)
   • You can rename the containing folder for organizational purposes. For these instructions, we will rename it from homebrew_launcher_channel.v2.1 to my-cool-app
2. Unzip CDecrypt
3. Create a file named keys.txt in the same directory as the CDecrypt executable, and paste the Wii U Common Key on the first line
4. Open a terminal and navigate to the location of the CDecrypt executable
5. Use CDecrypt to decrypt the contents of the HBLC
   • For example, if you have the contents of the HBLC in a folder named my-cool-app, the command would be something like: CDecrypt "/path/to/my-cool-app/" "/path/to/my-cool-app/"
   • The folder with the HBLC's contents should now contain three new folders: code, content, and meta. Delete everything in this directory except these three folders
   • PLACEHOLDER FOR WHAT TO DO IF COMMON KEY IS WRONG

Section IV - NUSPacker

1. Open a terminal and navigate to the location of NUSPacker.jar
2. Use NUSPacker to rebuild
   • For example, if the directory of your edited HBLC is my-cool-app, the command would be something like: java -jar NUSPacker.jar -in "/path/to/my-cool-app/" -out "/path/to/my-cool-app/" -encryptKeyWith XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX (replace the XXXX... with the Wii U Common Key)