Online, jeopardy-style CTF. March 14-16th. Free to play. Run by the Information & Systems Security Society team at The University of Texas at Austin.

What is a CTF? A CTF, or "Capture the Flag" competition, is a type of computer security contest. Strings of text, referred to as "flags," are hidden or encrypted in a series of challenges. During the competition, participants try to decrypt, hack, reverse-engineer, or exploit the challenges in order to gain access to the flag.

One of our vulnerability researchers has discovered a new type confusion bug in Chrome. It turns out, a type confusion can be evoked by calling .confuse () on a PACKED_DOUBLE_ELEMENTS or PACKED_ELEMENTS array. The attached poc.js illustrates an example. You can run it …

Challenge source code and official writeups for UTCTF 2024.

2024年4月2日 · 参考：https://meashiri.github.io/ctf-writeups/posts/202403-utctf/#insanity-check-reimagined. 首先应该要能发现字母里没有b,z,t。所以可能这是一种速记键盘，所以当然不会是已知的任何键盘布局。就跟逆向输入法的输入一样。搜索关键词：stenography on qwerty。有个速记软 …

2025年3月17日 · 团队每周会报名参加各类CTF比赛，writeup在公众号更新。 我们建立了一个关于CTF的公开交流群，大家赛后可以交流技巧思路。 UTCTF · 2025. 关注公众号回复 UTCTF2025 获得比赛附件. https://utctf.live. Find your One True Pairing on this new site I made! Whoever has the closest OTP to the “flag” will get their very own date! This problem resets every 30 minutes. http://challenge.utctf.live:3725.

直接vscode打开disk.img文件，然后搜索utflag关键字，搜不出来，打过ctf的豆知道，这里应该可以搜一下16进制、base64等等变体，所以我们搜7574666c61677b 如图直接搜到，再解码就出了

Description: UTCTF will consist of several dozen problems that gradually increase in difficulty (and point value). The categories will include Binary Exploitation, Networking, Reverse Engineering, Cryptography, Web, and more. Some problems can be solved in a matter of minutes, while others may take hours.

2025年3月14日 · Online, jeopardy-style CTF. Free to play, with prizes TBA. Open to all! Problems will span difficulties ranging from beginner-friendly to challenging. Run by Information & Systems Security Society team at The University of Texas at Austin. More information: - List of sponsors: https://www.isss.io/ - ISSS (organization): https://www.isss.io/

Best CTF yet with my team reCAPTCHA the Flag! I completed all of the crypto except one this CTF. To be honest, the crypto this CTF was easy (except for crypto/Forgery, which was rev + crypto, and I could not get past the rev part).