Sans Holiday Hack 2015 Write-Up

PDF as submitted to Counter Hack staff.

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A Successful Yet Failed Flare ON Challenge - The Write-up


Before I start going discussing how I solved challenges 1-9 (yes, I did not complete binary 10 or 11) I wanted to give my reasoning for doing a write-up despite not finishing. I had started challenge 1 with...

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Flare ON Challenge #7

I was debating on whether or not I wanted to do a blog entry on my failed yet successful attempt at the FLARE On challenge (I only completed up to binary #10) and am still thinking it over. However, I...

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Gray Tools

It is with great pleasure that I open source all materials for my DEF CON 23 talk “Hijacking Arbitrary .NET Application Control Flow”. The github repo for all code is located here.

For those interested, there are two...

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.NET Machine Code Manipulation

This is the first entry in a series of blog entries describing GrayStorm, a memory reconnaissance platform released at DEF CON 23. In this entry, I will describe how to overwrite a Method’s Machine Code after Just-In-Time Compilation (JIT)...

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