A Glimpse Into Tencent's Legu Packer

Analysis of Tencent Legu: a packer for Android applications.

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Analysis of Qualcomm Secure Boot Chains

Qualcomm is the market-dominant hardware vendor for non-Apple smartphones. Considering the [SoCs] they produce are predominant, it has become increasingly interesting to reverse-engineer and take over their boot chain in order to get a hold onto the highest-privileged components while they are executing. Ultimately, the objective is to be able to experiment with closed-source and/or undocumented components such as hardware registers or Trusted Execution Environment Software.

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Reverse-engineering Broadcom wireless chipsets

Broadcom is one of the major vendors of wireless devices worldwide. Since these chips are so widespread they constitute a high value target to attackers and any vulnerability found in them should be considered to pose high risk. In this blog post I provide an account of my internship at Quarkslab which included obtaining, reversing and fuzzing the firmware, and finding a few new vulnerabilities.

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