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I Achieved rank 4th in Amazon AppSec CTF 2025


Arbaaz Jamadar
Written by
Arbaaz Jamadar
Cloud Security Engineer | OSCP | AWS Security Specialty | CySA+ | Threat Detection & Incident Response

Overview:

I spent the weekend competing in the Amazon AppSec CTF, finished 4th, and earned a spot in the Finals on September 26 in Austin (Amazon AUS16).

The challenges were a blast, cloud and web stood out. Pulling flags via XSS exploits was especially satisfying. I also navigated AWS environments emulated with LocalStack, which kept me puzzling for a while. The AI and secure coding tracks were fun too, but cloud and web were my clear favorites.

If you’re assembling a team for upcoming CTFs, DM me. I’m happy to join an existing roster as well!

Amazon AppSec CTF HTB