DEF CON 32 - The Rise and Fall of Binary Exploitation - Stephen Sims

Steven Sims, a vulnerability researcher with 20 years of experience, discusses the evolution of exploit mitigations, vulnerability economics, and AI in security research at Defcon 0:00. He explains how memory corruption exploits have become increasingly difficult due to layered security mitigations 5:00, with 2014 being a pivotal year when Microsoft's mitigations significantly reduced browser exploit effectiveness 10:48.

Key Takeaways:
• Memory corruption exploits have declined due to effective mitigations like Microsoft's deferred free and isolated heaps introduced in 2014 10:48
• Vulnerability payouts have increased dramatically, with iOS exploits now valued up to $9 million due to the difficulty of bypassing modern mitigations 19:04
• AI and machine learning are being used to automate vulnerability research but still require human expertise for complex bug classes 20:13
• Windows mitigations work through a combination of userland hooks and kernel enforcement, creating a defense-in-depth approach 32:00

The presentation demonstrates that while the "golden years" of simple memory corruption exploits are over 5:00, vulnerabilities remain valuable with proper chains, and researchers must adapt to an evolving security landscape.

Sources:

• 0:00 Introduction of speaker and topic
• 5:00 Discussion on the end of "golden years" for memory corruption exploits
• 10:48 Impact of 2014 Micros