Tag: linux

Pwnagotchi Waveshare V3

So you want to build yourself one of those Pwnagotchi that everyone is talking about since the Flipper Zero came out and no one can get one, eh? And you’ve followed the official installation instructions (which this post supplements, but does not replace) but have noticed that either (1) you can’t really find a Waveshare eInk 2.13″ display that’s not version 3, or (2) you can’t quite seem to get into your Pwnagotchi if it’s even running and ERMAGERD WTF why is this so obtuse? Well, this is the guide for you. 🙂

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Custom Proxmox VE LXC Images

Using Linux Containers can significantly improve deployment times to make customized instances of a system. For instance, you may want to create 10 unique instances of a system for training purposes, but don’t want to run custom code on each when it starts to generate key material, assign users, etc. Using Linux Containers can make that simple, but unfortunately it’s not always so simple to create that custom image for deployment. This post is going to cover the start to finish customization of an image (in this case, using Kali Linux) from the base image to one that can deploy in a non-privileged virtualization platform (in this case, Proxmox VE). Let’s get started!

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DerbyCon 9 – DomainTools CTF – Reversing

Part three of the DerbyCon DomainTools CTF write-ups.  You can find coverage of all the Crypto challenges here and coverage of all the Forensics challenges here.  This finishes up the solutions for every challenge in the CTF, broken up by the same section names that they used.  When possible, I’ll also be creating CyberChef recipes to directly solve each challenge, and linking to them following the solution description.  Let’s get started!

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DerbyCon 9 – DomainTools CTF – Forensics

Part two of the DerbyCon DomainTools CTF write-ups.  You can find yesterday’s coverage of all the Crypto challenges here.  I’ll be contributing solutions for every challenge in the CTF, broken up by the same section names that they used.  When possible, I’ll also be creating CyberChef recipes to directly solve each challenge, and linking to them following the solution description.  Today: the forensics challenges!

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Fixing Firmware File Systems

Here’s the scenario: you’ve downloaded the firmware for a device that you want to explore in more depth, and extracted out the updates.  You dig through them and see that they’re EXT4 systems, and say “jackpot!” while rubbing your hands together in glee.  “A quick mount and I can browse to my heart’s content” you say to yourself… and then you see “wrong fs type, bad option, bad superblock on {DEVICE}, missing codepage or helper program, or other error.”  Let’s get past that. 🙂

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Quick Hits: Screen

Ever been frustrated by a session that was running remotely when your SSH/nc/1337shell.phpaspxcf dropped, and all that work was wiped out in the blink of an eye because when that died your shell did too, and the OS was nice enough to clean it all up?

Yeah, it sucks. Fortunately, there’s an easy way to handle that, and it’s called “screen”. Let’s dive in.
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Multi-OS Boot Build

One of the most frustrating things to do is shuffle various USB drives trying to remember which one you were using last (for persistent OS boots), or which one has the working version of “X” operating system/which installer.  This article covers how to take an external USB drive (whether a large thumb drive or an actual external hard drive) and turn it into a whizbang multi-OS booting device.

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