Emmet Friel cyber security blog

Recent posts:

Working with multiple GPG keys across multiple git identities

Introduction Its common to have multiple Git identities when working across different projects which can be difficult to manage but for the majority of us we usually have two git identities for signing commits: one for work use and one for personal use. This tutorial explains how to switch git identities automatically based on what directory yo... Read more

Building a Lightweight 10MB Embedded Linux OS on a Beaglebone Black ARM Cortex-A8

Introduction This project was built on a Ubuntu 18.04.3 LTS VM w/ 4GB RAM and 2 cores. This tutorial will show you how to build the latest (now as of writing) 5.5.5 kernel on the Beaglebone Black with a root filesystem that is less than 10MB which can be easily ported to other boards and IOT devices. The tutorial will consist of using crosstool... Read more

HTB: Bank Walkthrough

Introduction Bank is an “easy” machine on HackTheBox. This box was a fairly steep learning curve albeit there was a alot of important takeways being the DNS enumeration, Virtual Host Routing check, modifying HTTP response headers to stop redirecting webpages and the RCE technique. Recon and Enumeration root@kali:~/Documents/boxes/bank# nmap -... Read more

HTB: Arctic Walkthrough

Introduction Arctic is an “easy” Windows machine on Hackthebox. Reconnaissance & Enumeration root@kali:~/Documents/boxes/arctic# nmap -sC -sV -O -oN nmap.nmap 10.10.10.11 Starting Nmap 7.80 ( https://nmap.org ) at 2020-04-11 13:10 BST Nmap scan report for 10.10.10.11 Host is up (0.027s latency). Not shown: 997 filtered ports PORT STA... Read more