CORS Flaws Mastery: Hands-on from Zero to Hero!

Become professional in finding and exploiting Cross-origin resource sharing (CORS). For Ethical Hackers and Bug Hunters.

What you'll learn
CORS vulnerabilities
Cross-origin resource sharing vulnerabilities
find and exploit cross-origin resource sharing (CORS)
penetration testing
bug bounty hunting
Walkthrough of all Broken Access Control Apprentice and Practitioner Labs from Portswigger

Requirements
Basic IT Skills
Basic understanding of web technology
No Linux, programming or hacking knowledge required
Computer with a minimum of 4GB ram/memory
Operating System: Windows / Apple Mac OS / Linux
Reliable internet connection
Burp Suite Community (Pro optional)
Firefox Web Browser

Description
Welcome to the Cross-origin resource sharing (CORS) Mastery Class – From Zero to Hero!

This class combines both theory and practical hands-on lab experience to find and exploit Cross-origin resource sharing (CORS) vulnerabilities in modern applications (web apps, APIs and mobile).

Important note: This course is NOT teaching the actual usage of Burp Suite and its features. This course is proving a step-by-step walkthrough through the practitioner labs with detailed explanations on how to find and exploit web app vulnerabilities.

Your instructor is Martin Voelk. He is a Cyber Security veteran with 27 years of experience. Martin holds some of the highest certification incl. CISSP, OSCP, OSWP, Portswigger BSCP, CCIE, PCI ISA and PCIP. He works as a consultant for a big tech company and engages in Bug Bounty programs where he found thousands of critical and high vulnerabilities over the years.

This course features all current apprentice and practitioner PortSwigger Web Security Academy lab walk-throughs in the Cross-origin resource sharing (CORS) section. In addition, it features a full theory portion which explains the different types of Cross-origin resource sharing (CORS) vulnerabilities.

Martin is solving all these labs and giving useful insight on how to find and exploit these vulnerabilities. He is not just inserting the payload but explains each step on finding the vulnerability and why it can be exploited in a certain way. The videos are easy to follow along and replicate. Martin is also dropping a lot of tips and tricks for real-world Penetration Testing or Bug Bounty Hunting.

This training is highly recommended for anyone who wants to become a professional in Web Application Penetration Testing, Web Application Bug Bounty Hunting and wants to focus at 1 vulnerability class at a time.

It will feature all Apprentice and Practitioner Labs in the Cross-origin resource sharing (CORS) section.

The theory portion discusses the concepts around

· Same-Origin Policy (SOP)

· The Origin

· CORS Headers

· CORS Vulnerabilities

· Finding Cross-origin resource sharing (CORS) Vulnerabilities

The lab portion will feature

· Walkthrough of all Cross-origin resource sharing (CORS) Apprentice and Practitioner Labs from Portswigger

· Additional CORS lab

Notes & Disclaimer

Portswigger labs are a public and a free service from Portswigger for anyone to use to sharpen their skills. All you need is to sign up for a free account. I will update this course with new labs as they are published. I will to respond to questions in a reasonable time frame. Learning Web Application Pen Testing / Bug Bounty Hunting is a lengthy process, so please don’t feel frustrated if you don’t find a bug right away. Try to use Google, read Hacker One reports and research each feature in-depth. This course is for educational purposes only. This information is not to be used for malicious exploitation and must only be used on targets you have permission to attack.

Who this course is for
Anybody interested in ethical web application hacking / web application penetration testing
Anybody interested in becoming a web application bug bounty hunter
Anybody interested in learning how hackers hack web applications
Developers looking to expand on their knowledge of vulnerabilities that may impact them
Anyone interested in application security
Anyone interested in Red teaming
Anyone interested in offensive security