Web Reconnaissance Crawler
Project Overview
Web Reconnaissance Crawler is an ethical, non-intrusive security tool designed to assist authorized penetration testers during the reconnaissance phase of security assessments.
The tool focuses on mapping the application attack surface by discovering endpoints, parameters, forms, and basic security misconfigurations — without performing active exploitation.
⚠️ This project is intended strictly for educational purposes and authorized testing only.
Why This Project (Interview Perspective)
Reconnaissance is the first and most critical phase of penetration testing
Manual recon is time-consuming and error-prone
This tool automates safe information gathering, helping testers plan effective manual testing
Key Features
- Smart Crawling
Same-domain crawling only
Crawl depth control
Duplicate URL prevention
Optional robots.txt compliance
Request rate limiting
- Endpoint Discovery
Discovers reachable URLs
Identifies dynamic endpoints with parameters
Differentiates GET and POST endpoints
- Parameter & Form Mapping
Extracts URL parameters
Detects HTML forms
Maps input fields, methods, and actions
- Passive Security Checks (Non-Exploitative)
Missing security headers detection
HTTP → HTTPS redirection issues
Directory exposure indicators (status-based)
Input reflection identification (no payloads)
- Technology Fingerprinting
Server header analysis
Framework and CMS identification (heuristic-based)
JavaScript library detection
- Reporting
Structured JSON output
CSV export for manual review
Sitemap-style endpoint listing
System Architecture (High Level)
Target URL ↓ Crawler Controller ├── URL Queue & Depth Manager ├── HTTP Request Engine (Rate Limited) ├── Response Analyzer │ ├── Link Extractor │ ├── Form & Parameter Parser │ └── Header Analyzer ├── Passive Security Check Module └── Report Generator (JSON / CSV)
Tech Stack
Language: Python 3
Libraries: requests, BeautifulSoup, urllib3
Optional: Playwright (for JS-rendered pages)
Ethical Design Choices
No payload injection
No vulnerability exploitation
Scope-limited crawling
Explicit authorization disclaimer
How to Explain in Interview (Ready Line)
“This tool automates the reconnaissance phase of penetration testing by safely mapping endpoints, parameters, and security misconfigurations, allowing testers to focus on deeper manual analysis.”
Limitations (Honest Cons)
Does not perform active vulnerability exploitation
Limited JavaScript rendering without headless browser
Risk detection is heuristic, not confirmation-based
Future Improvements
Authenticated crawling support
Visual dashboard
API endpoint classification
Risk scoring based on exposure
Status: Interview-ready • Ethical • Practical