PortalNXPlugin

This is a base repository to build server plugins on the Nintendo Switch versions of Portal (v1.0.3) and Portal 2 (v1.0.3).

Compiling

1. Have devkitPro installed for the current platform.
2. Run the MakeFile by doing make.
3. The plugin .nro will appear at the root.

How loading it works

1. Portal and Portal 2 on Switch check a whitelist of file hashes in romfs/.nrr/launcher_main.nrr.
2. Generate the .nro plugin binary and use nxtool to get its hash.
3. At offset 0x344 in launcher_main.nrr, the number of whitelisted binaries is stored. Increment it by one.
4. There is also a 00 byte repitition that lasts to the end of the file. Overwrite it with the plugin’s hash to whitelist it.
5. If using NXSideLoader, place the modified launcher_main.nrr in the correct location and install the plugin in romfs/nro/(plugin_name).nro. Otherwise, repackage game.zip with the plugin and modified launcher_main.nrr.
6. Load the plugin with the plugin_load console command.

Automating the process

• This will generate a launcher_main.nrr file for the newly compiled plugin.

1. Have nxtool compiled and ready to use.
2. Place the target game's original romfs/.nrr/launcher_main.nrr file in switch/(game_name)/launcher_main.nrr.
   • A modified version can be used to support multiple plugins.
3. Configure the parameters in build.sh.
4. Run build.sh.