Author Archives: Norman

About Norman

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

Correlation Power Analysis vs AES

Recently, I spent some time learning about power analysis attacks. This has been an interesting journey with many interesting applications. The theory behind this is simple – that different operations (or – crucially – the same operation with different data) … Continue reading

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Atredis BH Ticket 2018 Challenge Writeup

Earlier this year, I completed a binary reverse engineering challenge from Atredis Partners. This was interesting, so I will present the writeup below, for posterity. The challenge began with a Slack message from a comrade, who mentioned there was a … Continue reading

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Karma on ESP8266

Earlier this year, I had wondered whether it was feasible to implement the Karma attack on a low-powered device, such as the ESP8266. It turns out this was quite simple, and you can now find a template for this on … Continue reading

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Writeups – Mr Reagan, Bluepill (Securityfest CTF)

This weekend, I particpated for a short while in the Securityfest CTF. During the time available, I was able to solve a few challenges – I will present the writeups for two of them here. Mr Reagan This challenge was … Continue reading

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Writeups – Numbers Game, BabyRE (RCTF – Part 2)

This post continues from my last post on. Two more writeups for RCTF are presented below. Numbers Game This challenge was presented as an IP and port, with the clue that we had to “guess”. This challenge ended up being … Continue reading

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