Hack The Box – Took the Byte (Forensics Challenge)

Someone took my bytes! Can you recover my password for me? This time all we are given is a single file named password,  which is identified simply as data. Examining it in a hex editor doesn’t give many more clues. I began thinking that the data might be encrypted somehow, and threw it into CyberChef. […]

Crowdstrike AdversaryQuest CTF – The Proclamation

In January 2021 Crowdstrike opened up their AdversaryQuest CTF. The CTF consisted of 12 challenges split across three new “threat actors”: SPACE JACKAL, PROTECTIVE PENGUIN, and CATAPULT SPIDER. The challenges mostly focused on binary exploitation and reverse engineering which is a bit of a departure from my skillset. Nonetheless I was able to solve two […]

Magnet Weekly CTF – Week 9

The Magnet Forensics Weekly CTF has been running since October and sets one question each week using an image that changes each month. The October questions were based on an Android filesystem dump, and November’s related to a compromised Hadoop cluster built on Ubuntu Linux. The December challenges return to more familiar territory for me […]

Memlabs Memory Forensics Challenges – Lab 5 Write-up

Memlabs is a set of six CTF-style memory forensics challenges released in January 2020 by @_abhiramkumar and Team bi0s. I have been working on the Magnet Weekly CTF recently so the other write-ups I had in progress have been sitting partially finished for a while now. This write-up covers Lab 5 – Black Tuesday, which […]

Memlabs Memory Forensics Challenges – Lab 4 Write-up

Memlabs is a set of six CTF-style memory forensics challenges released in January 2020 by @_abhiramkumar and Team bi0s. This write-up covers Lab 4 – Obsession. You can find the rest of my Memlabs write-ups here. As usual I started by calculating hashes for the image… MD5: d2bc2f671bcc9281de5f73993de04df3 SHA1: bf96e3f55a9d645cb50a0ccf3eed6c02ed37c4df …and running the Volatility imageinfo […]

Memlabs Memory Forensics Challenges – Lab 3 Write-up

Memlabs is a set of six CTF-style memory forensics challenges released in January 2020 by @_abhiramkumar and Team bi0s. This write-up covers Lab 3 – The Evil’s Den. You can find the rest of my Memlabs write-ups here. Before starting with the analysis I calculated the MD5 and SHA1 hashes of the memory dump MD5: […]