OffSec OSWA Study Guide: Everything You Need to Pass the WEB-200 Exam

The OffSec OSWA certification validates your expertise and opens doors to higher-paying roles in IT and cybersecurity. Whether you are just starting your study journey or doing a final review, this guide breaks down everything you need to know to pass the WEB-200 exam.

Exam Overview

• Certification: OffSec OSWA
• Exam Code: WEB-200
• Vendor: OffSec
• Cost: $1,749 USD (course + exam)
• Duration: 23 hours 45 minutes + report
• Questions: Hands-on practical exam
• Passing Score: Pass/Fail
• Format: Hands-on web application testing with written report
• Prerequisites: Web development fundamentals recommended

Domain Breakdown

Understanding the exam domains and their weights is critical for efficient study planning. Focus more time on heavily-weighted domains while ensuring you cover all areas.

Domain 1: Web Application Assessment Methodology (20%)

• 1.1 Understand web application architecture and technologies
• 1.2 Perform web application enumeration and mapping
• 1.3 Use proxy tools for traffic interception and analysis
• 1.4 Apply systematic testing methodology to web applications

Key concepts: HTTP Protocol, Request/Response Cycle, Burp Suite Proxy, Web Application Mapping, Technology Fingerprinting, Cookie Analysis, Session Management, OWASP Testing Guide

Domain 2: Cross-Site Scripting (XSS) (20%)

• 2.1 Identify and exploit reflected XSS vulnerabilities
• 2.2 Discover and exploit stored XSS vulnerabilities
• 2.3 Exploit DOM-based XSS vulnerabilities
• 2.4 Bypass XSS filters and content security policies

Key concepts: Reflected XSS, Stored XSS, DOM-Based XSS, XSS Filter Bypass, Content Security Policy, Cookie Theft, Session Hijacking, JavaScript Payloads

Domain 3: SQL Injection (25%)

• 3.1 Identify SQL injection points in web applications
• 3.2 Perform UNION-based and error-based SQL injection
• 3.3 Execute blind SQL injection techniques (boolean and time-based)
• 3.4 Extract data and escalate access through SQL injection

Key concepts: UNION-Based SQLi, Error-Based SQLi, Boolean Blind SQLi, Time-Based Blind SQLi, Second-Order SQLi, sqlmap Usage, Database Enumeration, Data Exfiltration

Domain 4: Authentication & Session Attacks (20%)

• 4.1 Identify authentication vulnerabilities and bypass techniques
• 4.2 Attack session management mechanisms
• 4.3 Exploit insecure password reset and recovery flows
• 4.4 Perform credential-based attacks against web applications

Key concepts: Authentication Bypass, Brute Force Attacks, Session Fixation, Session Hijacking, JWT Attacks, OAuth Vulnerabilities, Password Reset Flaws, CSRF Attacks

Domain 5: Server-Side Attacks & File Inclusion (15%)

• 5.1 Exploit local and remote file inclusion vulnerabilities
• 5.2 Perform server-side request forgery (SSRF) attacks
• 5.3 Exploit insecure file upload functionality
• 5.4 Identify and exploit command injection vulnerabilities

Key concepts: Local File Inclusion, Remote File Inclusion, SSRF Attacks, File Upload Exploits, Command Injection, Path Traversal, Web Shell Upload, PHP Wrappers

Recommended Study Timeline

Plan for approximately 10-16 weeks of dedicated study. Here is a suggested weekly breakdown:

• Week 1: Domain 1: Web app architecture — HTTP protocol, Burp Suite setup, proxy configuration
• Week 2: Domain 1: Application mapping — Technology fingerprinting, endpoint enumeration, API testing
• Week 3: Domain 2: XSS fundamentals — Reflected, stored, DOM-based XSS identification
• Week 4: Domain 2: Advanced XSS — Filter bypass, CSP evasion, payload crafting, cookie theft
• Week 5: Domain 3: SQL injection basics — Detection, UNION-based, error-based extraction
• Week 6: Domain 3: Advanced SQLi — Blind techniques (boolean/time-based), sqlmap, WAF bypass
• Week 7: Domain 4: Authentication attacks — Bypass techniques, brute force, credential stuffing
• Week 8: Domain 4: Session attacks — Fixation, hijacking, JWT attacks, CSRF exploitation
• Week 9: Domain 5: File inclusion — LFI/RFI exploitation, PHP wrappers, log poisoning
• Week 10: Domain 5: Server-side attacks — SSRF, file upload exploits, command injection, XXE
• Week 11: Lab Practice: Full web application assessments, timed exercises, report writing
• Week 12: Final Review: Weak areas, mock exam practice, exam preparation

Top Study Tips

1. Start with the official exam objectives. Download them from the OffSec website and use them as your study checklist. Every exam question maps to a specific objective.

1. Use active recall over passive reading. Instead of re-reading notes, test yourself with practice questions after each study session. This dramatically improves retention.

1. Focus on heavily-weighted domains first. Domains with higher percentages appear more on the exam. Master these before moving to lower-weighted areas.

1. Build hands-on experience. Set up a lab environment and practice the skills you are studying. Hands-on experience is especially valuable for performance-based questions.

1. Take practice exams under real conditions. Time yourself, eliminate distractions, and simulate the exam environment. Review every wrong answer and understand why it was wrong.

Practice Resources

Test your knowledge with our free tools:

Take our free OffSec OSWA practice quiz

• CVSS Calculator — Practice scoring vulnerabilities
• Password Strength Checker — Test password security

Career Impact

The OffSec OSWA certification demonstrates validated expertise to employers. Certified professionals typically see:

• Higher starting salaries compared to non-certified peers
• More interview callbacks as the certification signals commitment and competence
• Faster career progression with a recognized credential on your resume
• Access to roles that specifically require or prefer OffSec OSWA certification

What to Study Next

After earning your OffSec OSWA certification, consider these natural next steps:

• Deepen your specialization with an advanced certification in the same vendor track
• Broaden your skills with a certification from a complementary domain
• Visit our Career Paths page for detailed certification roadmaps

Get Organized with a Study Planner

A structured study plan makes the difference between passing and failing. Our fillable PDF study planners include domain trackers, weekly schedules, and progress tracking designed specifically for OffSec OSWA exam prep.

---

This guide is independently created for educational purposes. OffSec trademarks belong to their respective owners. FixTheVuln is not affiliated with or endorsed by OffSec.