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Month: March 2020

Jack-of-All-Trades — Write-up

Jack-of-All-Trades — Write-up

TryHackMe Challenge Link: https://tryhackme.com/room/jackofalltrades Jack-of-All-Trades is my very first CTF challenge box. It was created for the Securi-Tay conference run on the 28th of February, 2020 by the UAD Hacksoc. As you play through this box you will find many references to penguins. This will not make much sense to anyone who didn’t attend the conference, so allow me to explain before we get started in earnest. The theme of the 2020 Securi-Tay conference revolved around the infamous Dundee penguins….

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Inclusion — Write-up

Inclusion — Write-up

TryHackMe Challenge Link: https://tryhackme.com/room/inclusion Inclusion is a really nice introduction to Local File Inclusion. The room is written by falconfeast, or mzfr as he’s otherwise known. This will be a quick write-up, but hopefully it will make clear anything that you might be struggling with in this room. As a bonus, I’ll also include the really quick, unintended method at the end of this write-up, but please, do it the intended way first. Let’s get started! Enumeration: Well worth doing…

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Year of the Rabbit — Write-up

Year of the Rabbit — Write-up

TryHackMe Challenge Link: https://tryhackme.com/room/yearoftherabbit Year of the Rabbit is the second box I built; and was originally designed to accompany my workshop on CTF creation, first presented on the 11th of March 2020 to the UAD Ethical Hacking society. Now that Year of the Rabbit has been made public, I am also releasing this post as the official write-up. Let’s get started! Enumeration: As always, we first need to perform some initial enumeration on the box. Get nmap up and…

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Learn Linux — Write-up

Learn Linux — Write-up

TryHackMe Walkthrough Link: https://tryhackme.com/room/zthlinux Learn Linux is a great introductory room from Paradox. As the name suggests, it gives a nice foundation for Linux skills. This is a walkthrough room, so I’m not going to go into a huge amount of detail about the concepts themselves — I’ll leave that in Pars’ capable hands. Instead I’m going to be focusing on the questions, and how to answer them. By this token, I will be bypassing the tasks which don’t actually…

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NoName CTF — Write-up

NoName CTF — Write-up

TryHackMe Challenge Link: https://tryhackme.com/room/nonamectf NoName CTF is a great little CTF from stuxnet. It provides a really nice introduction to some often lesser-used topics in challenge boxes, including SSTI and BOF, making this a perfect box to get some practice in on! Without further ado, let’s begin! Enumeration As per normal, we’re going to begin this challenge with an nmap scan: We’ve got four ports open here. Nothing unusual about port 22 — just SSH as normal. We can’t bruteforce that…

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Unix File Permissions

Unix File Permissions

The permissions system in Unix is one of those things that you just need to understand if you’re going to work with Linux (or indeed, any other derivatives of Unix). There are already many great articles about file permissions online; however, this is a topic that I keep getting asked about, so I’m going to write it up in my own way. If you’re struggling to understand how file permissions work in Unix then hopefully this post will be of…

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