This article explores how PHP reverse shells work, how to set them up for ethical testing, and, most importantly, how to defend against them. What is a Reverse Shell?
For defenders: Look for fsockopen , exec , shell_exec , proc_open , or base64_decode in uploaded files. Monitor outbound connections on unusual ports. reverse shell php install
A PHP reverse shell is a tiny piece of code that, when executed on a vulnerable server, forces that server to establish a TCP connection back to an attacker's machine. Once connected, the attacker's machine can send system commands, and the server faithfully executes them, returning the output. This article explores how PHP reverse shells work,
: The person trying to gain access sets up a "listener" on their own computer (often using a tool like netcat ) to wait for an incoming connection. Monitor outbound connections on unusual ports
To use this PHP script, you'll need to set up a listener on the specified IP and port. A simple listener can be created with Netcat:
Download it: