Category Archives: Jesting

“A jest’s prosperity lies in the ear of him that hears it, never in the tongue of him that makes it.”

Writeup – Flare-on Challenge 2017 notepad.exe

Over the past few weeks, I devoted a intermittent chunks of time to the 2017 Flare-on Challenge. During the time allocated, I was able to solve 4 challenges (maybe? I got to pewpewboat.exe). I will present my writeup for one … Continue reading

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FPGA-Driven Glitching (Regular and Crowbar) with Phase-Locked Loop

I spent the majority of this weekend working on improving my knowledge of hardware security, focussing on my experiments with glitching. In my previous posts on the topic, I had investigated how one could use two Arduinos to generate glitches … Continue reading

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Writeup – Backdoor Pi (Kaspersky Labs CTF)

This weekend, I spent some time participating in the Kaspersky Labs CTF. I was able to solve a few challenges in the time allocated – it is a humbling reminder of how quickly one’s mental acuity can dull, if not … Continue reading

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Writeup – restricted_python, rev rev rev (TWCTF) + General Updates (Hardware, Flash Recovery)

This weekend, I participated in the Tokyo Westerns CTF. Due to my complete and utter lack of anything resembling sk1llz, I was able to solve the warmup challenges and one non-warmup challenge. I will present my writeup below. restricted_python This … Continue reading

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EM Fault Injection on a Budget (Part 2)

During my last post on this topic, I had explored the possibility of building an EM fault injection rig for home experimentation. In this post, I will discuss my progress, as well as initial exploration of the attack surface of … Continue reading

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