CyberQuest 2025 - Mikroblog

Description

It carries whispers of old activity. Some fragments linger in the flow—quiet hints that not everything is as it seems.

Hints:

• no need to brute-force
• input fields are protected

cq25-challenge0[1-9]-b.cq.honeylab:42780

Metadata

• Filename: networkflow.pcap
• Tags: pcap, aes, token
• Number of solvers: 3

Solution

I was not able to solve this challenge, Deathbaron’s write-up is available here:

https://github.com/mullerdavid/ctf_writeups/blob/master/cyberquest25/Online_Web_Mikroblog/WRITEUP.md

I missed the IV in the pcap.