https://xtrimi.github.io/posts/ Recent content in Posts on xtrimi https://xtrimi.github.io/img/icon.png https://xtrimi.github.io/img/icon.png Hugo -- 0.136.2 en-us Mon, 27 Oct 2025 20:55:00 +0800 https://xtrimi.github.io/posts/osu25/ Mon, 27 Oct 2025 20:55:00 +0800 https://xtrimi.github.io/posts/osu25/ is he stupid? https://xtrimi.github.io/posts/crypto25/ Sun, 10 Aug 2025 12:00:00 +0800 https://xtrimi.github.io/posts/crypto25/ contributed basically nothing ^_^ https://xtrimi.github.io/posts/preexam/ Wed, 28 May 2025 12:00:00 +0800 https://xtrimi.github.io/posts/preexam/ ts pmo https://xtrimi.github.io/posts/thjcc25/ Mon, 21 Apr 2025 12:00:00 +0800 https://xtrimi.github.io/posts/thjcc25/ still too noob T_T https://xtrimi.github.io/posts/bronco25/ Wed, 19 Feb 2025 12:00:00 +0800 https://xtrimi.github.io/posts/bronco25/ i hate steganography with a burning passion https://xtrimi.github.io/posts/uoft25/ Wed, 12 Feb 2025 12:00:00 +0800 https://xtrimi.github.io/posts/uoft25/ local idiot uses binary search in web chal https://xtrimi.github.io/posts/nullcom25/ Sun, 02 Feb 2025 22:22:00 +0800 https://xtrimi.github.io/posts/nullcom25/ camellia - speedrun https://xtrimi.github.io/posts/iris25/ Mon, 06 Jan 2025 12:00:00 +0800 https://xtrimi.github.io/posts/iris25/ writeup for IrisCTF 2025 https://xtrimi.github.io/posts/thjcc24/ Mon, 16 Dec 2024 22:35:00 +0800 https://xtrimi.github.io/posts/thjcc24/ writeup for THJCC CTF 2024 https://xtrimi.github.io/posts/hacklu24/ Wed, 11 Dec 2024 14:06:00 +0800 https://xtrimi.github.io/posts/hacklu24/ <p>ik this is like 1 month ago but i was busy with working on udg2 april fools so here we are<br> this was the most solved chall but i spent an embarrasingly long time solving it<br> guess i have a massive skill issue</p> <h1 id="challenge">challenge</h1> <p><img loading="lazy" src="images/buffzone1.png" alt="starting page" /> we&rsquo;re presented with a textbox input here, which will display a message on the page when it&rsquo;s submitted, along with a button that shares our message with the admin bot<br> <img loading="lazy" src="images/buffzone2.png" alt="message display" /> the admin bot carries a flag cookie on its visit, so i figured i need to make the bot send the cookie to us somehow</p>