This Blue Team challenge was released on February 19, 2023 from CyberDefenders.org. You can access the room at https://cyberdefenders.org/blueteam-ctf-challenges/99#nav-questions. Shoutout to @HouseOfStark for creating the challenge and also for being so responsive and kind in entertaining questions and inquiries about the challenge on Discord. I’ve had interactions with other creators where they just shrugged their …
Category Archives: Walkthroughs and Writeups
Try Hack Me: b3dr0ck
This room was released on 8/26/2022 and is rated medium in difficulty. Shout-out to the room creator, @F11snipe. You can access the room at https://tryhackme.com/room/b3dr0ck. Scenario: Barney is setting up the ABC web server and using TLS certs to secure connections, but he’s having trouble. Here’s what we know: He established Nginx on port 80, …
Try Hack Me: Hacker vs. Hacker
This room was released on 8/12/2022 and is rated easy in difficulty. Shout-out to the room creator, @Aquinas. You can access the room at https://tryhackme.com/room/hackervshacker# Scenario: The server of a recruitment company appears to have been hacked, and the hacker has defeated all attempts by the admins to fix the machine. They can’t shut it …
LetsDefend: Memory Dumper
Another good challenge from LetsDefend.io and kudos to this challenge creator, 0xCyberJunkie.sh. You can access the challenge through this link. I intentionally masked part of the answers so you will have to do the necessary steps to see the entirety of the the answers. Scenario: A Windows endpoint was recently compromised. Thanks to the cutting-edge …
LetsDefend: PDF Analysis
WARNING: Do not open/run the pdf file on your local machine because it is malicious. Use the sandbox to analyze the file. Scenario: An employee has received a suspicious email. The employee reported this incident and mentioned that they did not download or open the attachment as they found the email very suspicious. They wish …
CyberDefenders: GrabThePhisher
This Blue Team challenge was released on 7/23/2022 from CyberDefenders. You can access the room at https://cyberdefenders.org/blueteam-ctf-challenges/95. This is one of the easiest challenges I’ve ever encountered from CyberDefenders.org. This is a perfect challenge for beginners who just want to get their feet wet in doing hacking/IR challenges. The skills/tools to be tested and needed …
CyberDefenders: Mr. Robot
Note: I started with using volatility on my Windows machine, and eventually, I transitioned to working on my Linux machine. Pardon me for screenshots from different OSes. The first task in this challenge is to convert the VMWare Suspended State (.vmss) files to a memory dump so we can perform memory analysis. There is a …
CyberDefenders: DetectLog4j-CTF
This challenge was released on 01/16/2022 from CyberDefenders. You can access the room at https://cyberdefenders.org/labs/86. This is another blueteam challenge. The skills/tools to be tested and needed to complete this challenge are Autopsy or FTK Imager, dnSpy, VirusTotal, and PowerShell. I hope you will find my write-up helpful. What is the computer hostname?vcw65 What is …
Try Hack Me: Conti
This room was released on 1/7/2021 and it is rated Medium in difficulty. Shou-out to the room creator, @heavenraiza who also recognized Bohan Zhang for the challenge. You can access the room at https://tryhackme.com/room/contiransomwarehgh. This is a blueteam challenge. The skills/tools to be tested and needed to complete this challenge are Splunk and Googling. I …
CyberDefenders: BSidesJeddah-Part2 (Memory Image Forensics)
This challenge was released on 12/14/2021 from CyberDefenders. You can access the room at https://cyberdefenders.org/labs/82. This is another blueteam challenge. The skills/tools to be tested and needed to complete this challenge are 99% between volatility2 and volatility3, and 1% Googling, MITRE, Crackstation, and CyberChef. In this challenge, you will gain a better appreciation of how …
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