Fetch the Flag CTF 2025 kicked off on February 27, uniting thousands of players worldwide to take on over 30 hacking challenges across web, binary, exploitation, and more. Beyond the competition, participants sharpened their security skills, expanded their knowledge, and contributed to a safer digital world—all while having fun.

This blog highlights some of our community writeups, offering insights into how players tackled and solved these challenges.

For official challenge write-ups and additional community insights, check out the #ctf-writeups channel in Discord.

VulnScanner

Who is JH?

Plantly

Echo

Math For Me

Unfurl

A Powerful Shell

String Me Along

Science 100

Screaming Crying Throwing up

Weblog

Zero Ex Six One

Read The Rules

Calculator

D0nutShop

TimeOff

Additional Information Needed

Coding Mountains

ClickityClack

Thank you to everyone who took part in Fetch the Flag 2025! The enthusiasm, creativity, and dedication brought to these challenges make Fetch the Flag an exciting and impactful event year after year. We can’t wait for the next event—keep hacking, keep learning, and see you soon!