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Rank 4 Worldwide: Amazon AppSec CTF 2025 (Qualified for Austin Finals)

Rank 4 Worldwide: Amazon AppSec CTF 2025 (Qualified for Austin Finals)

Arbaaz Jamadar
Written by
Arbaaz Jamadar
Cloud Security & Application Security Engineer · OSCP · AWS Security Specialty · Master’s in Cybersecurity, University of Maryland

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