Ankur Sundara

ctf

SECCON CTF 2022 Finals

Winning SECCON Finals, writeups, and some Tokyo pictures.

ctf

DiceCTF 2023 writeups

writeups for the challenges I wrote for dicectf 2023

research

Overlong Sec-Required-CSP header: CVE-2021-37989

abusing long http headers for cache probing

research

The Closed Shadow DOM

a bit of research on security of the shadow DOM

ctf

Hosting a CTF - UIUCTF'21 Overview + Infra

Thoughts on running UIUCTF21, competition decisions, and infrastructure writeup