CTF

SpamLess

In this post, I’m going to solve the SpamLess challenge from UUTCTF2021. It is about sending an email without being spam to [email protected] address. The mail server is served as a Tor’s hidden service.

Now the writeup …

The Challenge

SpamLess Challenge

I’ve described the needed tools and methods for solving the question in the following video. You can check my previous post about fetching a hidden service’s public key which is needed for solving this challenge.

SpamLess WriteUp – UUTCTF2021

If you have any question, you can reach me by email.

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Sharif CTF 13

Barnamak WriteUp

Two weeks ago, SharifCTF was hold and the questions were acceptable. We attended with CGU team name and and gain the 44th place among the 682 attended teams, whom has at least one question solved in the CTF. In this post I described the writeup for the question about reverse engineering of Android app with 200 points (the 3rd question of reverse section).

Sharif CTF 1

Sharif CTF 1

Continue reading 8st SharifCTF Android WriteUps: Vol I

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CTF

Offsec is an Iranian computer security group which holds conferences or CTFs in the computer security area. In their recent challenge, they created a web challenge which is accessible through offsecmag Telegram channel. The challenge started on 16 Dec 2016 and here I will WRITE UP! 🙂

In this post, the write up of the challenge is presented.

Continue reading Catch the CORS Write Up!

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