TILFH: Intro to Things I Learned From Hermit

Hi there,

This is Killswitch. I’m a relatively new penetration tester trying to learn the tools of the trade.  Hermit has graciously allowed me to post some guest articles from the POV of someone learning cyber security. As a newcomer to the scene, it’s easy to get overwhelmed by all of the knowledge out there in the community. My goal with these posts are to drop in little tips and tricks as I learn them from whatever source I can.

I was lucky enough to find a mentor to point me in the right direction and a community of like-minded individuals that are passionate about security in all forms. These post are my small attempt to give a little something back and try to help anyone that may be looking for a place to start learning. I hope they help.

 

Happy hacking,

KS

TILFH: Quotes and When to Use Them

One thing that always confuses me when I’m writing Bash scripts is what type of quote to use in a given situation. Luckily, Hermit schooled me with this quick rundown:

“SOMETHING” = This means evaluate what’s between the quotes.

‘SOMETHING’ = This means don’t evaluate what’s between the quotes. This is a literal string.

`SOMETHING`= This means execute the stuff between the quotes and spit out the result. NOTE: These little back quotes are hard to find. Look on the tilde key.

$(SOMETHING) = Same as above.

– Killswitch

Introduction to Hardware Protocols

As you begin diving into hardware hacking and reading printed circuit boards (PCB) you will likely come across several common protocols.  This article isn’t intended to be an exhaustive list of content, but rather a quick guide to identifying which protocols are commonly used, what they require, and what common tools will let you interface with them.  I’ll be covering the following protocols in this article:

  • RS-232
  • USB
  • I2C
  • SPI
  • JTAG
  • UART
  • USART

Continue reading “Introduction to Hardware Protocols”

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.

Continue reading “Multi-OS Boot Build”

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