This tool is a proof-of-concept packer for .NET executables designed to provide a starting point to explain the basic principles of runtime packing.
You can download it from the following link: https://packetstormsecurity.com/files/download/123765/netcrypt-master.zip
Source: https://packetstormsecurity.com/files/123765/NetCrypt-.NET-Executable-Packer.html