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.”

Writeups – PicoHSM Speed Dating, Super Public Algorithm, Remote Lab (Donjon CTF)

In this post, I will describe the solution for 3 challenges I was able to solve. The related solution files and support binaries are available here. PicoHSM Speed Dating This challenge was presented as an ARM ELF binary (provided in … Continue reading

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Writeup – Glitching AES (Donjon CTF)

Update: I am an idiot. But I think this makes the accidental result fun to think about! Over the past few weeks, I participated in Donjon CTF. This post will document my method for solving the “Glitching AES” challenge, which … Continue reading

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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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