Learn Regex in 2 Minutes (FOR HACKERS) | picoCTF - MatchTheRegex
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In this video, I walk through the picoCTF “MatchTheRegex” challenge and show how to solve it by analyzing the client-side JavaScript. The source code reveals a server-side regex pattern ^p.....F!?, which must be matched to trigger the flag. By crafting an input that fits the exact pattern, we retrieve the flag without brute force or automation. This tutorial is perfect for beginners learning how regex filters work in web challenges and how to read client-side hints in CTFs.
Disclaimer: This video is for educational purposes only.