If you want to read about the design behind this tool and how to make your own crypter, there’s an article I wrote about it here: Write a crypter in any language
Don’t be a script kiddie, I made this GPLv3 so you can make your own modifications. This tool is intended as a demo for how easy it is to write your own crypter. It works for its intended purpose and I will not patch it to make it suitable for yours.
Bypasses AMSI and all modern AVs in use on VirusTotal (as of writing)
Compresses and encrypts powershell scripts
Has a minimal and often even negative (thanks to the compression) overhead
Randomizes variable names to further obfuscate the decrypter stub
Randomizes encryption, compression and even the order that the statements appear in the code for maximum entropy!
Super easy to modify to create your own crypter variant
Supports recursive layering (crypter crypting the crypted output), tested up to 500 layers.
Supports Import-Module as well as standard running as long as the input script also supported it
GPLv3 — Free and open-source!
All features in a single file so you can take it with you anywhere!
Is despite all of the above not a silver bullet for every configuration — caveat emptor!