Medellín Cartel CTF Challenge Writeup

Challenge Information

• Name: Medellín Cartel
• Points: 190
• Category: OSINT (Open-Source Intelligence)
• Objective: The challenge involves finding a flag related to a person named Blacky on a specific Instagram page.

Solution

Here’s a step-by-step solution for the Medellín Cartel CTF challenge:

1. Hint Analysis:

   • We definitely used the hints in this challenge which directed us to find information about Blacky on a specific Instagram page.

2. Investigating Blacky’s Instagram Page:

   • Visited the Instagram page mentioned in the hint.

   • Found that Blacky’s page has only 1 follower and 1 post.

     

3. Inspecting the Post:

   • Inspected the single post on Blacky’s page.
   • Discovered the flag hidden within the post’s content.

4. Obtaining the Flag:

   • Extracted the flag from the post’s content.

     

Conclusion

The Medellín Cartel challenge required participants to investigate a specific Instagram page to find information about a person named Blacky. By inspecting Blacky’s post on the page, participants could discover the flag hidden within the post’s content.