Contents

🌐 Unminify

A detailed write-up of the Web challenge 'Unminify' from PicoCTF - 2024

/images/PicoGym/PicoCTF-2024/Unminify/challenge_presentation.png
Challenge Presentation

📊 Challenge Overview

Category Details Additional Info
🏆 Event PicoGym Event Link
🔰 Category Web 🌐
💎 Points Out of 500 total
⭐ Difficulty 🟢 Easy Personal Rating: 0/10
👤 Author Jeffery John Profile
🎮 Solves 40.820 solve rate
📅 Date 28-01-2025 PicoGym
🦾 Solved By mH4ck3r0n3 Team:

📝 Challenge Information

I don’t like scrolling down to read the code of my website, so I’ve squished it. As a bonus, my pages load faster! Additional details will be available after launching your challenge instance.

🎯 Challenge Files & Infrastructure

Provided Files

1
Files: None

🔍 Initial Analysis

First Steps

Initially, the website appears as follows:

/images/PicoGym/PicoCTF-2024/Unminify/site_presentation.png
Site Presentation

The website itself hinted that once the page was viewed, I would also obtain the flag, so I immediately thought of inspecting the page source.

🎯 Solution Path

Exploitation Steps

Exploitation

It was enough to inspect the page source and enable word wrap, or use CTRL+F to search the page for picoCTF{.

Flag capture

/images/PicoGym/PicoCTF-2024/Unminify/manual_flag.png
Manual Flag

🛠️ Exploitation Process

Approach

The exploit makes a GET request to the page and extracts the flag using a regex.

🚩 Flag Capture

Flag

Proof of Execution

/images/PicoGym/PicoCTF-2024/Unminify/automated_flag.png
Automated Flag
Screenshot of successful exploitation

🔧 Tools Used

Tool Purpose
Python Exploit

💡 Key Learnings

Skills Improved

  • Binary Exploitation
  • Reverse Engineering
  • Web Exploitation
  • Cryptography
  • Forensics
  • OSINT
  • Miscellaneous

📊 Final Statistics

Metric Value Notes
Time to Solve 00:00 From start to flag
Global Ranking Challenge ranking
Points Earned Team contribution

Created: 28-01-2025 • Last Modified: 28-01-2025 *Author: mH4ck3r0n3 • Team: *