Undo : PICO CTF writeup

📰 Medium · Cybersecurity

Learn how to solve the Undo challenge in PicoCTF, a cybersecurity competition, and improve your problem-solving skills in capture the flag (CTF) challenges

intermediate Published 8 May 2026
Action Steps
  1. Read the Undo challenge description on PicoCTF
  2. Analyze the given files and identify potential vulnerabilities
  3. Apply reverse engineering techniques to understand the code
  4. Use debugging tools to identify the solution
  5. Submit the flag to complete the challenge
Who Needs to Know This

Cybersecurity teams and individuals looking to improve their CTF skills can benefit from this writeup, as it provides a step-by-step solution to the Undo challenge

Key Insight

💡 The Undo challenge requires a combination of reverse engineering, debugging, and problem-solving skills to identify the flag

Share This
🔍 Solve the Undo challenge in PicoCTF and improve your CTF skills! #cybersecurity #CTF

Full Article

My first picoCTF challenge was Undo. Since I was just getting started with PicoCTF, I decided to try some easy challenges first. In this… Continue reading on Medium »
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