AppSecMaster
The Ultimate Application Security Training Platform
Sharpen your code review, bug hunting and pentesting skills with realistic hands-on challenges
No credit card required
Real Results, Backed by Numbers
Here to help you master application security with measurable, hands-on experience
0+
Snippet Challenges
0+
Mansion Challenges
0+
Challenge Solves
What's new? Check out our latest challenges
Explore newly released Mansions and Snippets
Why AppSecMaster is right for you
Whether you're a developer, pen tester, or application security manager, our platform will help you grow
Web Application Security for Pentesters & Security Engineers
- Learn how HTTP requests are routed in modern web frameworks like Spring, Django, and Express. - Discover and exploit real-world web application vulnerabilities hands-on. - Master secure coding practices and bypass techniques used in bug bounty programs. - Prepare for top security certifications: OSWE, EWPTX, GWAPT, and more.
Secure Coding for Developers
- Understand the OWASP Top 10 and how to write secure web applications. - Detect and fix vulnerabilities in Java, Python, Node.js, and other tech stacks. - Stay current with zero-day exploits and real-world attack techniques. - Thinking of a career shift? Become an application security engineer with AppSecMaster.
Enterprise Developer Security Training
- Train your developers in application security best practices and secure software development lifecycle (SSDLC). - Support DevSecOps initiatives and comply with ISO 27001, SOC 2, and PCI DSS. - Reduce security bugs early with shift-left strategies and code-level vulnerability awareness. - Strengthen your organization’s cybersecurity posture through expert-led training.
Your path to AppSec expertise
Progress through carefully designed procedures to level up your skills and become an expert in application security
Step 1
Getting Started (Beginner)
Basic challenges to learn core concepts
Guided tutorials and hints
Hands-On Experience
Step 3
Strengthening Skills (Intermediate Advanced)
Explore basic vulnerability exploitation
Intermediate-level challenges
Hands-On Experience
Step 5
Advanced Techniques (Professional)
Explore advanced techniques
Tackle expert-level challenges
Hands-On Experience
Step 2
Gaining Confidence (Intermediate)
HTTP Core Concepts
Snippet analysis
Effective remediation
Step 4
Building Expertise (Advanced)
Multi-Language Vulnerability identification
OWASP top 10 Code
Vulnerability Exploitation
Step 6
Real-World Application (Expert)
HTTP Request routing
Latest web frameworks mechanisms
Weaponize skills to exploit Mansion challenges
Ready to reach the top? Become a Master and unlock your full potenial