Categories
Hacking & CTF Linux

CTF – Vulnveristy Privilege Escalation

Task 5 of TryHackMe’s Vulnversity CTF room is Privilege Escalation. Previously we comprimsed the web server by uploading a reverse-shell payload in a PHTML file. Now we’ve got a foot hold on the box, can we achieve root level access? Task 5 – Privilege Escalation Our task; now you have compromised this machine, we are […]

Categories
Computing Linux SysAd and Security

How to do Port Scanning with Nmap

Network Mapper, usually just known as Nmap, is a powerful yet compact tool to have in your arsenal, giving you the power to explore a network and scan ports of various targets you find. Network and system administrators should know about this tool, its very helpful in debugging certain networking problems. It is however predominantly […]

Categories
Computing Linux SysAd and Security

How to use Linux’s Traceroute (3 Examples)

Connections over a network often need debugging but due to the nature of the networking-beast, the actual topography of the network may be unknown. Connections are usually perceived as going from A to B, for example your desktop computer connects to Amazons website. To help expose the exact topography of a network we can use […]

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Computing Linux Raspberry Pi SysAd and Security

Raspberry Pi Day3: Configuring and connecting securely and remotely with SSH

The other day I managed to mount the Raspberry Pi OS image onto an SD card and the Pi had its first taste of life. Now I’m going to attempt to set-up remote secure connections to the Pi so I can do away with the keyboard, mouse and monitor attached to the experimental hobby PC. […]

Categories
Computing Fixes & Solutions SysAd and Security

Linux: Changing your password from the CLI

We all know that passwords are some of the most important pieces of information we have to remember, but on top of that we’re told we should change them regularly. This is all well and good, but do you know how to change your Linux password when you can’t get into the X windows manager? […]

Categories
Computing Linux Raspberry Pi

Raspberry Pi Day2: Setting it up

So unlike most of the computer I’ve bought in the past, the Raspberry Pi doesn’t come with its own operating system pre-installed (which actually saves me the time of removing, what is usual, Microsoft Windows). In fact the reason you can’t just plug in the Pi and boot it up first time is that the […]

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Computing Programming Raspberry Pi

Raspberry Pi Day1: Introduction (Model B)

So I finally bit the bullet and purchased a Raspberry Pi. I was hardly quick to jump on the bandwagon as the first model of the Pi came out in Feb last year (2012). I managed to get my hands on the model B version for only ¬£30 from Amazon, quite a bargain even though […]

Categories
Computing Fixes & Solutions Linux

Chrome locking up with .pki/nssdb directory error

After re-installing Ubuntu 12.04 back on my laptop I noticed that Google Chrome was quite unstable. I was using version 28.0.3, but every time I opened it up it asked if I wanted to set it as my default browser. Every time I clicked yes. Every time it failed to remember it when I came […]

Categories
Computing Fixes & Solutions Linux

Updating Chromium on Debian 6 (Squeeze)

Switching between Ubuntu and Debian machines, you notice the benefits of both system OS’ quite quickly. The first major thing you’ll probably have noticed with Debian 6 (Squeeze) is that its bundled with Chromium. After a bit of use though, you’ll also notice how unstable Chromium is. Lots of web pages freezing up, tabs not […]

Categories
Computing Web Design

Font Rendering Explained

One aspect of web design that still limits everyday, is the horrendously poor choice of fonts we have at our finger tips. With only a handful of truly system universal fonts at our disposal, its not a surprise that font delivery systems such as Font Squirrel or TypeKit¬†have appeared to fill in the holes. But […]