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Reversing and Bypassing DRM/HSM Dongles - Jeremy Mill BSidesCT 2019 (Hacking Illustrated Series InfoSec Tutorial Videos)

Reversing and Bypassing DRM/HSM Dongles
Jeremy Mill
BSidesCT 2019

The talk is about a USB dongle DRM system which also has HSM functionality built into it. One of the main features of this dongle is an ?enveloper? which takes an existing application and wraps it in another executable and attempts to prevent execution of the existing application. In this talk I first reverse engineer the driver for the dongle with Ghidra and edit it to remove anti-debug functionality. After removing the anti-debug features I examine the ?wrapped? executable. I first perform a simple bypass of the dongle requirement but then also extract the encryption key from the wrapper application and dump the ?existing? application which was being protected. Additionally I will outline some of the cryptographic flaws in the HSM functionality of the dongle.

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