Author Archives: Norman

About Norman

Sometimes, I write code. Occasionally, it even works.

Writeups – nothing, reversing (TWCTF)

This weekend, I took part in Tokyo Westerns CTF 2020. I only managed a few hours on Sunday night, but I was able to solve 2 (warmup) challengs. The writeups are below, for future reference: Nothing More to Say This … Continue reading

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Writeups – roppity, slithery (CSAW 2020)

This weekend, I participated briefly in the CSAW 2020 CTF. I solved a number of challenges, and below are the writeups for two (fairly straightforward, unfortunately) challenges, and one I missed because I did something incredibly dumb in the exploitation … Continue reading

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EMFI Privilege Escalation on Raspberry Pi

Over the past week, I have been exploring the concept of extending the KERNELFAULT attack to use EMFI, with some success, in the context of setting up further attacks against other targets. The key questions to answer for me were … Continue reading

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Writeups – Basics, Beginner (Google CTF 2020)

Last weekend, I spent a little bit of time on Google CTF. I solved 2 challenges – just goes to show how out of practice I am, use it or lose it! – and I’ll present the writeups below, for … Continue reading

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Side-Channel Analysis of Keeloq

Over the past few days, I have spent some time reviewing side-channel analysis of the Keeloq cipher. This post documents the results of this review. Background This work is not “new” per se: various forms of side-channel attack against Keeloq … Continue reading

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