Author Archives: Norman

About Norman

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

Writeups – products-manager, overfloat (Facebook CTF)

Posted on June 3, 2019

This weekend, I participated in the Facebook CTF event. The quality of challenges in this CTF was decent, but the event was marred by significant connectivity problems, rendering it unplayable for a significant portion of time for me. I solved … Continue reading →

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Writeup – Overcobol (INS’Hack)

Posted on May 7, 2019

Over the past weekend, I participated in the INS’Hack CTF. This was a well executed CTF with a fairly mixed-bag of challenges. A sizeable serving of salt coming from a blind Python breakout which took a bit of brute force, … Continue reading →

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On AppSec Day…

Posted on October 24, 2018

Last week, I had the pleasure of attending OWASP AppSec day in Melbourne. This was a productive day. On the flight to Melbourne, I stumbled upon a hypothesis as to why my initial attempt at differential electromagnetic analysis of some … Continue reading →

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Power Leakage Modelling of DES

Posted on August 20, 2018

This weekend, as part of my efforts to advance my learning of power analysis, I attempted to create my own power leakage model of DES and recover a key without referring to previous work. My targets were the ATMega328p board, … Continue reading →

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Magnetic Correlation Analysis of AES

Posted on August 10, 2018

Over the past week, I have attempted to replicate my power analysis work on AES using a magnetic field / H-Field probe. Unfortunately, there is little literature on the specifics of how to do this, but I was able to … Continue reading →

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