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From Easy Wins to Epic Challenges: Bounty Hunter Edition

Daniel 'Blaklis' Le Gall

Recounts intriguing bug bounty stories ranging from simple logic errors to chaining CAPTCHA weaknesses to break sensitive application encryption.

Summary

The Spectrum of Bug Bounty Discoveries

Bug bounty hunting involves finding vulnerabilities that range from surprisingly straightforward logic flaws to intricate multi-stage exploit chains.

Capitalizing on Simple Vulnerabilities

Real-world examples illustrate how simple observation during routine browsing revealed business logic flaws that allowed infinite balance manipulation.

Advanced Exploit Chaining Case Studies

Complex vulnerability investigations demonstrate how exploiting a flawed CAPTCHA implementation enabled breaking the cryptographic protections of a sensitive web application.

Hacker Intuition and Persistence

Developing strong investigative intuition and persisting through ambiguous application behaviors are vital skills for discovering high-impact security bugs.

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