Fetch the Flag CTF 2025 Community Writeups

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

• Writeup by Pat Bautista 

• Writeup by LazyTitan33

Who is JH?

• Writeup by Contrxl 

• Writeup by B14CKY

Plantly

• Writeup by Contrxl 

• Writeup by Michael Meade

Echo

• Writeup by LazyTitan33

• Writeup by B14CKY

Math For Me

• Writeup by hubertf

• Writeup by LazyTitan33

Unfurl

• Writeup by 3xpl01tCTF

• Writeup by Michael Meade

• Video by Micah Silverman

A Powerful Shell

• Writeup by Rusty

• Writeup by Michael Meade

String Me Along

• Writeup by Rusty

• Writeup by Michael Meade

Science 100

• Writeup by B14CKY

Screaming Crying Throwing up

• Writeup by B14CKY

• Writeup by LazyTitan33

Weblog

• Writeup by Contrxl 

• Writeup by B14CKY

Zero Ex Six One

• Writeup by B14CKY

• Writeup by LazyTitan33

Read The Rules

• Writeup by B14CKY

Calculator

• Writeup by LazyTitan33

D0nutShop

• Writeup by LazyTitan33

TimeOff

• Writeup by B14CKY

Additional Information Needed

• Writeup by B14CKY

• Writeup by Rusty

Coding Mountains

• Writeup by Rusty

• Writeup by LazyTitan33

ClickityClack

• Writeup by LazyTitan33

• Writeup by B14CKY

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!