Tryhackme Cct2019 【2026 Update】
This was the "main event" for many participants. The CTF track simulated real-world penetration testing scenarios.
Summary
What it covers
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Learning outcomes (what you’ll gain)
Tips to get the most from it
Who should do it
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Master the CCT2019 Challenges on TryHackMe: A Comprehensive Guide
The CCT2019 room on TryHackMe is a collection of legacy challenges originally designed for the U.S. Navy Cyber Competition Team (CCT) 2019 Assessment. Unlike standard "boot-to-root" machines, this room focuses on analytical depth, packet analysis, and reverse engineering, requiring users to verify every piece of evidence rather than just rushing for a flag. The room is divided into several specialized tasks: Task 1: CCT2019 - pcap1 (Packet Analysis) Task 2: CCT2019 - re3 (Reverse Engineering) Task 3: CCT2019 - for1 (Forensics) Task 4: CCT2019 - crypto1 (Cryptography) Task 1: PCAP Analysis (pcap1)
This challenge tests your ability to reconstruct data from raw network traffic. The primary goal is to analyze a packet capture file and extract relevant files or credentials. tryhackme cct2019
Key Focus: Use Wireshark to inspect the traffic. Look specifically for file transfers (HTTP/FTP) or encrypted communications that can be decrypted.
Crucial Step: You must recover the first file in its entirety. If the initial file recovery is incomplete, subsequent steps in the challenge may become impossible to solve.
Avoid Rabbit Holes: The creator warns that this is strictly a PCAP challenge. If you find yourself performing steganography or advanced reverse engineering in this specific task, you are likely off track. Task 2: Reverse Engineering (re3)
The re3 task involves analyzing a compiled binary to understand its internal logic. In this challenge, you aren't just looking for static strings; you must understand the execution flow.
Tools to Use: For .NET applications, tools like dnSpy are recommended for decompiling and viewing the source code.
The Logic: One walkthrough of this task highlights a requirement to find factors of a specific number (e.g., 711,000,000) and test combinations to find the correct key for a set of "sliders" within the application. Task 3 & 4: Forensics and Cryptography This was the "main event" for many participants
These tasks round out the assessment by testing your ability to handle digital artifacts and broken encryption.
Forensics (for1): Requires deep diving into file headers and metadata.
Cryptography (crypto1): Often involves layered encryption where each step depends on the correct interpretation of the previous artifact. Strategy for Success To complete the CCT2019 room, adopt a Zero Trust mindset:
Question Everything: Artifacts may contain "red herrings" designed to lead you down rabbit holes.
Validate Evidence: Ensure every step is backed by evidence found within the provided files.
Use the Right Tools: Have a toolkit ready that includes Wireshark, dnSpy, and standard Linux forensics tools. TryHackMe, London, UK TryHackMe_and_HackTheBox/CCT2019.md at master - GitHub What it covers
The MySQL password does not directly grant SSH access. However, revisiting the web server with further enumeration reveals another hidden directory: /admin.
