Become a Partner
Add OffSec to your list of training providers
Partner with us
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.
How to enroll today
Most
popular
Course + Cert
Exam Bundle
$1,649
One-time payment
More information
# of Courses
1
Days of lab access
90
# of Exam attempts included
1
Best
value
All
access
Learn
Unlimited
$5,799/year
Billed annually*
More information
Recommended # of learners
2-9
# of Exam attempts included
Subscription Term
Annual
OffSec Learning Library Access
All access
Included
Included
Labs for every course
Included
# of Courses
All
Days of lab access
365
Fundamental content
Unlimited
PEN-103 & KLCP Exam
Included
PEN-210 & OWSP Exam
Included
# of Courses
1
1
All
Days of lab access
90
365
365
# of Exam attempts included
1
Fundamental content
N/A
Unlimited
Unlimited
PEN-103 & KLCP Exam
N/A
Included
Included
PEN-210 & OWSP Exam
N/A
Included
Included
N/A
Included
Included
Financing is now available through Climb Credit with as little as 0% APR and up to 36 monthly payments, excluding Learn Unlimited. State exclusions may apply. Learn more.
Once started, 90 day lab access cannot be paused.
Buying for a team?What our community is saying
DeAnne Roseen
Product Security Engineer III
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.
Stepan Sojka
Full Stack Developer, Ryanair
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!
Khalil Abdul-Karym Thiero
Cybersecurity Consultant, It4
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.
Advance your cybersecurity career with OffSec
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
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.
Most
popular
Course & Cert
Exam Bundle
$1,649/once
The bundle includes 90 days of access to a single course, the associated labs and a single exam attempt.
Best
value
Learn
One
$2,599/year*
One year of lab access alongside a single course plus two exam attempts.
All
access
Learn
Unlimited
$5,799/year
Unlimited OffSec Learning Library access plus unlimited exam attempts for one year.
Large teams
Learn
Enterprise
Get a quote
Flexible terms and volume discounts available.
Learn One is an annual subscription for individuals and organizations who want to enroll in a single course and ultimately earn an OffSec certification. Learn One includes one course of your choice, two cert exam attempts, hands-on lab access, and all Learn Fundamentals content.
What’s included
1 year of access to the course of your choice
2 exam attempts during your subscription
365 days of lab access
1 year of unlimited access to all fundamental content and OffSec curated Learning Paths
PEN-103 + 1 KLCP exam attempt
PEN-210 + 1 OSWP exam attempt
1 download of course material
Financing for Learn Fundamentals and Learn One now available through Climb Credit with as little as 0% APR and up to 36 monthly payments.
State exclusions may apply. Learn more.
New to cybersecurity want to get educated on fundamental content before signing up?
Check out Cyberversity - our free resource library covering essential cybersecurity topics.
Learn more