https://blog.sohamsen.me/en/tags/miscellaneous-ctf/Recent content in miscellaneous-ctf on GhostPosts™Hugo -- gohugo.ioenhi@sohamsen.me (Soham Sen)hi@sohamsen.me (Soham Sen)© 2020, All Rights ReservedSun, 26 Apr 2020 19:07:36 +0530https://blog.sohamsen.me/en/posts/breaking-math-random/Sun, 26 Apr 2020 19:07:36 +0530hi@sohamsen.me (Soham Sen)Mon, 11 Mar 2024 19:08:00 +0530https://blog.sohamsen.me/en/posts/breaking-math-random/TL;DR? Here. PS: You need to do pip install z3-solver requests for this to work. Okay so a little confession: Before the CTF challenge, I didn’t think much of Cryptographically Secure Pseudo Random Generators (CSPRNGS), and thought they were just for very high security purposes, like defence against a state level hacking agency. I thought normal PRNGs were enough for day-to-day purposes and no one could realistically break it. After this CTF…oh boy, it takes 30 mins to break PRNGs (the one used by Javascript in Chrome/Firefox) and I’m never going to use those for security again. I should’ve never…Soham Senmiscellaneous-ctfhousecat-rtcp-ctfCTF Writeups