One of the best features of the .NET runtime is its in-built ability to call native code, whether that's APIs exposed from dynamic libraries or remote COM objects. Adding this in-built functionality to an "type-safe" runtime has its drawbacks, not the least the introduction of security issues due to misuse. This presentation will go into depth on how the .NET runtime implements its various interop features, where the bodies are buried and how to use that to find issues ranging from novel code execution mechanisms, elevation of privilege up to remote code execution. The presentation will assume the attendee has some familiarity with .NET and how the runtime executes code.

James is a security researcher in Google's Project Zero. He has been involved with computer hardware and software security for over 10 years looking at a range of different platforms and applications. With a great interest in logical vulnerabilities he has numerous disclosures in a wide range of products from web browsers to virtual machine breakouts as well as being a Pwn2Own and Microsoft Mitigation Bypass bounty winner. He has spoken at a number of security conferences including Black Hat USA, CanSecWest, Bluehat, HITB, and Infiltrate.

@tiraniddo

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