• URL: https://play.picoctf.org/practice/challenge/471
• Title: FANTASY CTF
• Tags: Easy, General Skills, picoCTF 2025, browser_webshell_solvable
• Author: syreal
• Started: 7 July 2025
• Solved: 7 July 2025
• Description: Play this short game to get familiar with terminal applications and some of the most important rules in scope for picoCTF. Additional details will be available after launching your challenge instance.

After I netcatted, there was a story about a group of friends registering for CTF competition. I followed my conscience by

• URL: https://play.picoctf.org/practice/challenge/442

• Title: Binary Search

• Tags: Easy, General Skills, picoCTF 2024, shell, browser_webshell_solvable, ls

• Author: Jeffery John

• Started: 9 July 2025

• Solved: 9 July 2025

• Description: Want to play a game? As you use more of the shell, you might be interested in how they work! Binary search is a classic algorithm used to quickly find an item in a sorted list. Can you find the flag? You’ll have 1000 possibilities and only 10 guesses. Cyber security often has a huge amount of data to look through - from logs, vulnerability reports, and forensics. Practicing the fundamentals manually might help you in the future when you have to write your own tools! You can download the challenge files here:

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