Shellter
https://www.shellterproject.com/Downloads/Shellter/Readme.txt
Installation in Linux requires the use of wine.
Ideally your executable should be something small and easy to execute. Something easy like VNC, NC, 7-zip, etc. This is so the executable keeps the traditional function of the application. Could replace an .exe on a server share to pivot, or utilize in social engineering attacks.
running is pretty easy (sudo wine shellter.exe) and the wizard largely guides you through the use in terminal.
Obfuscate powershell code