Rio Sherri

Managing Security Consultant, X-Force Red Adversary Simulation, IBM

Rio Sherri is a managing consultant for the X-Force Red Adversary Simulation team at IBM.

Adversary Services December 7, 2023

Exploiting GOG Galaxy XPC service for privilege escalation in macOS

7 min read - Being part of the Adversary Services team at IBM, it is important to keep your skills up to date and learn new things constantly. macOS security was one field where I decided to put more effort this year to further…

Adversary Services October 17, 2022

Analysis of a Remote Code Execution (RCE) Vulnerability in Cobalt Strike 4.7.1

9 min read - Command & Control (C2) frameworks are a very sensitive component of Red Team operations. Often, a Red Team will be in a highly privileged position on a target’s network, and a compromise of the C2 framework could lead to a…

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Rio Sherri

Exploiting GOG Galaxy XPC service for privilege escalation in macOS

Analysis of a Remote Code Execution (RCE) Vulnerability in Cobalt Strike 4.7.1

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Topic updates