Welcome to the Vulnerability Scanning Guide¶
About This Guide¶
This documentation provides an in-depth exploration of vulnerability scanning techniques essential for penetration testing and the OSCP certification. Content is derived from OffSec PEN-200 courseware, rephrased and organized for practical application.
What You'll Learn¶
Who This Guide Is For¶
- OSCP Candidates: Preparing for the OSCP certification exam
- Penetration Testers: Building practical vulnerability assessment skills
- Security Professionals: Enhancing network security knowledge
- Students: Learning cybersecurity fundamentals
Quick Start¶
Prerequisites¶
Before diving in, ensure you have:
- Kali Linux or similar penetration testing distribution
- Basic understanding of networking concepts
- Familiarity with command-line interfaces
- (Optional) Access to vulnerable lab environments (HTB, TryHackMe)
Recommended Learning Path¶
- Start with Theory - Understand core vulnerability scanning concepts
- Practice with Nmap - Master lightweight scanning with NSE scripts
- Advance to Nessus - Learn comprehensive vulnerability assessment
- Apply Knowledge - Practice on HTB boxes or lab environments
Key Features¶
| Feature | Description |
|---|---|
| OSCP-Focused | Content aligned with OSCP exam objectives |
| Comprehensive | Theory, practical examples, and best practices |
| Hands-On | Real commands and configurations |
| Verified | Techniques tested in lab environments |
| Updated | Based on current OffSec PEN-200 materials |
Tools Covered¶
Nmap¶
The industry-standard port scanner with powerful NSE scripting capabilities for lightweight vulnerability detection.
Nessus¶
Professional vulnerability scanner with extensive plugin library covering 67,000+ CVEs.
OpenVAS¶
Open-source vulnerability assessment framework with 50,000+ Network Vulnerability Tests (NVTs).
# Update feeds and start OpenVAS
sudo gvm-feed-update
sudo gvm-start
# Access at: https://127.0.0.1:9392
Additional Resources¶
- Getting Started Guide - Setup and environment preparation
- Tools & References - Additional tools and documentation
- OSCP Tips - Exam-specific strategies and advice
About the Author¶
Mohamed Trigui is a cybersecurity enthusiast completing a Master's in Cybersecurity at Illinois Tech. Currently preparing for OSCP certification through hands-on practice on Hack The Box and developing custom security tools.
Current Projects: - Replicating vulnerabilities on Linux and writing Lua patches - Developing Nmap NSE scripts for zero-day reconnaissance - Writing HTB machine walkthroughs and exploit documentation
Connect with me:
Disclaimer¶
Educational Purpose
This guide is for educational purposes only. Always obtain proper authorization before scanning any systems. Unauthorized vulnerability scanning is illegal and unethical.
Content Attribution
Content is derived from OffSec PEN-200 (OSCP) training materials, rephrased and adapted for educational purposes. All credit for the original methodology and techniques goes to Offensive Security.
License & Usage¶
This documentation is provided as-is for educational purposes. When using these techniques:
- ✅ DO: Practice in authorized lab environments
- ✅ DO: Obtain written permission for assessments
- ✅ DO: Follow responsible disclosure practices
- ❌ DON'T: Scan systems without authorization
- ❌ DON'T: Use for malicious purposes