E-Book - Hacking APIs: Breaking Web Application Programming Interfaces

Learn to Penetration-Test APIs and Secure Them Like a Pro

Hacking APIs is a crash course in API security testing, designed to help you find vulnerabilities, earn high rewards in bug bounty programs, and secure your own APIs. Whether you're a penetration tester, ethical hacker, or developer, this book will teach you how modern APIs work, how attackers exploit them, and how to defend against these threats.

What You’ll Learn:

✅ How REST & GraphQL APIs Work – Understand API structures and common weaknesses
✅ Setting Up an API Security Testing Lab – Use Burp Suite, Postman, Kiterunner, and OWASP Amass
✅ Reconnaissance & Endpoint Discovery – Fuzz APIs and map attack surfaces
✅ Authentication & Authorization Attacks – Exploit JWT flaws, OAuth misconfigurations, and broken access controls
✅ Injection Vulnerabilities – Perform SQLi, NoSQLi, and Command Injection attacks
✅ GraphQL Security Testing – Uncover broken object level authorization (BOLA) vulnerabilities
✅ Bypassing Security Controls – Evade rate limits, WAFs, and other protections

Hands-On Labs & Real-World Scenarios:

🔹 Enumerate API Users & Endpoints – Using fuzzing techniques
🔹 Exploit Data Exposure Vulnerabilities – Using Postman
🔹 Perform API Authentication Attacks – Target JWTs, OAuth, and API keys
🔹 Combine Attacks for Deeper Exploits – Exploit NoSQL injection and authorization flaws
🔹 Hack GraphQL APIs – Break authorization controls in modern API applications

Who This Book Is For:

🔹 Bug Bounty Hunters – Find high-payout API vulnerabilities
🔹 Ethical Hackers & Penetration Testers – Master real-world API attack techniques
🔹 Developers & Security Engineers – Secure APIs by understanding how they’re attacked

By the end of this book, you’ll be equipped to discover critical API vulnerabilities that others miss and secure web applications against modern threats.

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