Starting at $1,749

WEB-300: Advanced Web Attacks and Exploitation

OffSec’s Advanced Web Attacks and Exploitation (WEB-300) course dives deep into the latest web application penetration testing methodologies and techniques. Learners gain extensive hands-on experience in a self-paced environment, designed to elevate their skills in ethical hacking, vulnerability discovery, and exploit development.

Successful completion of the online training course and challenging exam earns the OffSec Web Expert (OSWE) certification. This web application security certification validates expertise in advanced web application security testing, including bypassing defenses and crafting custom exploits to address critical vulnerabilities, making certified professionals an asset for securing any organization against web-based threats.

Topics covered in the Advanced Web Attacks and Exploitation course (WEB-300)

JavaScript Prototype Pollution

Explore how attackers manipulate JavaScript’s prototype inheritance model to inject malicious data, compromise application logic, and even achieve remote code execution.
Advanced Server-Side Request Forgery (SSRF)

Delve into advanced techniques for exploiting SSRF vulnerabilities, including bypassing filters, accessing internal resources, and exploiting complex application architectures.
Web Security Tools and Methodologies

Master a variety of cutting-edge web security tools and methodologies, including fuzzing, static analysis, dynamic analysis, and manual code review.
Source Code Analysis

Learn how to analyze source code to identify security vulnerabilities, understand the application’s logic, and uncover potential attack vectors.
Persistent Cross-Site Scripting

Discover how attackers store malicious code on a web server to launch persistent XSS attacks, targeting multiple users over time.
Session Hijacking

Learn how attackers take over user sessions, potentially gaining unauthorized access to sensitive information and functionality.
.NET Deserialization

Understand the risks associated with deserialization in .NET applications and how attackers can exploit these vulnerabilities to achieve remote code execution.
Remote Code Execution

Explore various techniques used by attackers to execute arbitrary code on a target web server, often leading to complete compromise of the system.
Blind SQL Injection

Learn how to exploit SQL injection vulnerabilities even when there is no direct feedback from the application, using various techniques to infer information and compromise the database.
Data Exfiltration

Understand how attackers extract sensitive data from web applications, including through SQL injection, XXE attacks, and compromised file uploads.

See more in course syllabus

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What our community is saying

I did it! I am officially OSWE-certified. I'll admit, I am actually very excited about earning this one and I'm happy to say it sharpened my skills as an AppSec engineer.

I am happy to announce that I passed OffSec's (in)famous 48-hour long exam and obtained the Offensive Security Web Expert (OSWE) certification. It is an excellent course. I'd recommend this to any full-stack developer who wants to get better at what they do. Thanks for a great course, OffSec!

As always, OffSec did a great job. The course and the exam were well designed. I highly recommend it for developers and also for anyone doing audits in white box mode. 

Supercharge your cybersecurity career with the OSWE

Become an in-demand cybersecurity professional

Master advanced web attacks with hands-on training

Go beyond the fundamentals and develop the specialized skills needed to uncover and exploit complex vulnerabilities in modern web applications. Learn from experienced professionals through practical exercises and lab environments.
Prove your web penetration testing expertise

The OSWE certification showcases your mastery of advanced web security testing techniques, including API security, cloud security, and bypassing modern defenses. OSWE-certified professionals are highly sought after in the cybersecurity field.
Become a certified application security engineer

Sharpen your web app penetration testing skills and explore a wide range of advanced exploitation techniques. Expand your knowledge of web security tools, attack methodologies, and mitigation strategies.
Take your penetration testing career to the next level

Advance into specialized roles such as senior penetration tester, security architect, or vulnerability researcher by demonstrating your mastery of web application security testing.
Build a reputation as a web security expert

The OSWE certification is globally recognized as a mark of distinction in the cybersecurity industry, opening doors to new career opportunities and demonstrating your commitment to staying ahead of evolving threats.

Open doors to exciting cybersecurity roles

Senior Web Application Penetration Tester

Lead security assessments, conduct advanced penetration testing, and guide remediation efforts for complex web applications.
Security Architect

Design and implement secure architectures for web applications, ensuring that security is baked into the development process from the start.
Vulnerability Researcher

Uncover and analyze new web application vulnerabilities, contribute to the security community by sharing your findings, and help build more secure software.
Security Consultant (Web Application Focus)

Provide expert guidance to organizations on securing their web applications, conducting comprehensive risk assessments, and developing tailored security strategies.
Product Security Engineer

Work with development teams to identify and fix security flaws in web applications throughout the software development lifecycle.

FAQ

What is the OSWE exam?

The Offensive Security Web Expert (OSWE) exam is a rigorous, proctored 48-hour practical assessment of your advanced web application penetration testing skills. You’ll demonstrate your ability to identify, exploit, and report on complex vulnerabilities within a real-world environment, culminating in the development of a custom exploit.
What format is the OSWE exam in?

The OSWE exam is entirely hands-on. You will be given access to a target environment and tasked with compromising web applications using advanced techniques, showcasing your practical web application penetration testing abilities.
Who is the WEB-300 course for?

The WEB-300 course is ideal for experienced penetration testers and security professionals seeking to master advanced web application attacks and exploitation techniques, ultimately earning the OSWE certification.
What are the prerequisites for WEB-300?
While there are no formal certification prerequisites, it’s strongly recommended that you have:
- Comfort reading and writing at least one coding language
- Familiarity with Linux
- Ability to write simple Python / Perl / PHP / Bash scripts
- Experience with web proxies
- General understanding of web app attack vectors, theory, and practice
What competencies will I gain?
Upon completing WEB-300 and successfully passing the OSWE exam, you’ll have mastered advanced web application security methodologies, including:
- In-depth vulnerability analysis and exploitation
- Custom exploit development
- Bypassing modern web application defenses
- Exploiting authentication and authorization flaws
- Attacking API endpoints and cloud-native applications
How does OffSec support my online journey?
Throughout the online training course, you’ll have access to:
- A virtual lab environment for hands-on practice
- Extensive course information and materials, including videos and exercises
- A vibrant online community of students and OffSec professionals
What is the exam retake policy?

For details on exam retakes, please refer to OffSec’s official policies.
Can I extend my lab time?

For information on lab extensions, please refer to OffSec’s official policies.

OffSec Web Application Assessment Courses & Certifications

WEB-200

Foundational Web Application Assessments with Kali Linux (OSWA)

WEB-300

Advanced Web Attacks and Exploitation (OSWE)

Advance your cybersecurity career with OffSec

Begin your journey

Establish a strong foundation in web application security with the Web Application Assessment Essentials Learning Path and the Foundational Web Application Assessments with Kali Linux (WEB-200) course.
Expand your web application penetration testing expertise

Deepen your understanding of advanced web attacks and exploitation techniques with the Advanced Web Attacks and Exploitation (WEB-300) course. Learn to tackle complex vulnerabilities, bypass modern defenses, and create custom exploits.

Hone your web security skills

Enhance your web security knowledge and capabilities by practicing in OffSec’s virtual labs and exploring resources that focus on advanced penetration testing techniques, secure coding practices, and cloud-native security.
Become a web application security expert

Advance into specialized roles like senior penetration tester, security architect, or vulnerability researcher by mastering the art of web application security testing.

Start learning with OffSec

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The bundle includes 90 days of access to a single course, the associated labs and a single exam attempt.

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One year of lab access alongside a single course plus two exam attempts.

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Starting at $1,749

WEB-300: Advanced Web Attacks and Exploitation

Topics covered in the Advanced Web Attacks and Exploitation course (WEB-300)