Autorev 1 - Bypassing the Reverse Engineering (Pwntools) | picoCTF 2026
In this picoCTF 2026 writeup for Autorev 1, we tackle a reverse engineering speed challenge that requires solving 20 different binaries with only one second each. While it initially seems like a massive reverse engineering task, we discover that the secret is actually hidden within the server's response. We use Pwntools to build a dynamic Python script that automates the extraction and submission of these codes across all 20 levels to capture the final flag.
Links & Resources
Challenge: https://play.picoctf.org/practice/cha...
Tools Used: Pwntools, Python, xxd
Video Chapters
00:00 Introduction to Autorev 1
00:22 Analyzing the Binary Data & Secret Code
02:02 Automating with Pwntools (Python Script)
03:03 Parsing the Secret Code (Level 1)
03:33 Sending the Secret Code Back to the Server
03:55 Adapting the Parsing Logic for Subsequent Levels
05:24 Running the Final Exploit & Flag Capture
05:36 Key Takeaways & Outro
#picoctf2026 #reverseengineering #pwn #pwntools #automation #cybersecurity #ctf #python