Reverse and Bind Shells

A bind shell is when an attacker opens a port or listener on the compromised system and waits for a connection. This allows the attacker to connect from any system and execute commands to further manipulate the victim.

A reverse shell is vulnerability in which an attacking system has a listener, and the victim initiates a connection back to the attacking system.

Many tools allow the creation of reverse and bind shells from compromised hosts. Meterpreter (Metasploit Module) and Netcat are some of the more popular ones.