Web Application Penetration Testing Lab

Problem

Building real offensive skill requires a safe place to practice complete exploitation chains without touching production or third-party systems.

Scope

• ›Locally hosted, intentionally vulnerable apps (DVWA, custom Docker targets)
• ›PortSwigger Web Security Academy and TryHackMe / HackTheBox rooms
• ›No production or unauthorized systems

Tools

Methodology

1. 1
   Environment

   Stand up isolated Docker targets and lab VMs so every test is legal, repeatable, and disposable.

2. 2
   Coverage

   Work through injection, XSS, file-upload bypasses, SSRF, JWT flaws, deserialization, SSTI, and API abuse.

3. 3
   Exploitation

   Chain findings into realistic impact (e.g. auth bypass leading to data access) rather than isolated single bugs.

4. 4
   Write-up

   Document each chain with root cause and the correct fix, building a personal knowledge base.

Result & Impact

• ›Hands-on fluency across the OWASP Top 10 and modern API attack classes
• ›Faster recognition of vulnerable patterns during real assessments
• ›A growing library of sanitized write-ups used for continuous learning

Evidence (sanitized)

• ›Lab topology diagram (isolated Docker network)
• ›Sanitized write-ups from public training platforms

Lessons Learned

• ›Understanding root cause beats memorizing payloads.
• ›Chaining low/medium issues often produces the highest real-world impact.
• ›A reproducible lab makes practice sustainable and safe.