Udemy – Offensive API Exploitation

Master API Hacking with Real-World Exploits: BOLA, SSRF, Auth Bypass & API Bug Bounty Techniques
What you'll learn
Understand API architecture (REST, GraphQL, WebSockets, SOAP) and common attack surfaces.
Reconnaissance techniques to discover hidden API endpoints and undocumented functions.
Exploit all OWASP API Security Top 10 vulnerabilities with hands-on attack scenarios
Perform API-specific attacks like IDOR, mass assignment, token abuse, and broken session control.
Bypass authentication & authorization using logic flaws, token tampering, and role manipulation.
Abuse misconfigurations like open API docs, CORS issues, verbose errors, and debug modes.
Think like a Red Teamer and understand how attackers chain vulnerabilities for maximum impact.
Prepare for real-world penetration testing engagements targeting APIs of mobile apps, web apps, and cloud services.
Requirements
Before diving into this advanced course, students should ideally have: 1. Completion of the following courses (recommended but not mandatory): Offensive Approach to Hunt Bugs – for a strong foundation in vulnerability research and the hacker mindset. Offensive Bug Bounty Hunter 2.0 – to master recon, asset discovery, and real-world exploitation on bug bounty platforms. 2. Basic understanding of APIs Familiarity with REST, JSON, and HTTP methods (GET, POST, PUT, DELETE) Understanding how API documentation tools like Swagger or Postman are used 3. Hands-on experience with web security fundamentals Knowledge of OWASP Top 10 for web applications Understanding of authentication, authorization, session management, and cookies 4. Comfort using common security tools Tools such as Burp Suite, Postman, FFUF, Nmap, curl, and browser developer tools 5. Basic scripting knowledge (preferred) Ability to write simple scripts in Python or jаvascript for automation, payload crafting, or proof-of-concept development 6. An offensive security mindset A curiosity-driven approach to breaking systems, identifying vulnerabilities, and reporting them ethically
Description
Modern applications are built on APIs — and attackers know it. This advanced course is designed to equip security professionals, ethical hackers, and bug bounty hunters with the offensive skills needed to exploit real-world API vulnerabilities. Whether targeting mobile apps, web services, or third-party integrations, you'll learn how to approach APIs like an attacker and identify flaws that most testers miss.Built on the foundation of your previous training (Offensive Approach to Hunt Bugs and Offensive Bug Bounty Hunter 2.0), this course dives deep into the OWASP API Security Top 10 and beyond. You'll explore misconfigurations, broken authentication, authorization flaws, rate-limit abuse, SSRF, and more — all through a practical, hands-on approach.From reconnaissance and fuzzing to chaining complex vulnerabilities and writing professional-grade reports, this course gives you the skills needed to succeed in real-world assessments, red teaming, and bug bounty programs. You'll also gain insights into how attackers exploit modern technologies like GraphQL, JWT, API Gateways, and cloud-connected APIs. Key Highlights:Offensive exploitation of OWASP API Top 10 vulnerabilitiesReal-world API bug bounty case studies and practical labsTools: Burp Suite, Postman, FFUF, Kiterunner, curl, and custom scriptsHands-on recon, fuzzing, endpoint enumeration, and PoC developmentLearn how to think, act, and report like a professional API pentester
Who this course is for
This course is ideal for individuals who are serious about offensive security and want to master API exploitation in real-world environments. It is specifically tailored for: Bug Bounty Hunters Those aiming to consistently find and report high-impact API vulnerabilities across platforms like HackerOne, Bugcrowd, and private programs. Penetration Testers and Red Teamers Professionals looking to strengthen their skillset by adding advanced API attack techniques to their offensive testing methodology. Security Researchers Individuals exploring modern API attack surfaces such as GraphQL, WebSockets, and undocumented endpoints. Web and Mobile Application Hackers Those already experienced with traditional OWASP Top 10 who want to go deeper into API-specific security issues. Security Engineers and DevSecOps Professionals Developers and security teams who want to understand how attackers think, in order to build more resilient APIs. Students or Self-learners Learners who have completed foundational courses like "Offensive Approach to Hunt Bugs" or "Offensive Bug Bounty Hunter 2.0" and want to advance their skills.
Homepage

https://www.udemy.com/course/offensive-api-exploitation/

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