The most common way to get this file is through BootMii, which is part of the standard Wii modding process.
The "keys.bin" file contains cryptographic keys essential for certain homebrew applications on the Wii. These keys are used for decryption and encryption processes, facilitating communication between the console and homebrew software. Essentially, they help ensure that data exchanged between the Wii and homebrew apps remains secure and properly authenticated. keys.bin wii
: Use a guide like Wii Hacks Guide to install the Homebrew Channel and BootMii. The most common way to get this file