Once you have a list of subdomains, check which are alive:
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Once you have an asset list, identify what is running on those servers. Use httpx to probe HTTP ports and extract titles, status codes, and tech stacks. Look for legacy frameworks, unmaintained PHP instances, or outdated Jenkins servers. Phase 2: Vulnerability Hunting Methodologies bug bounty tutorial exclusive
Modern web applications rely heavily on backend APIs, which are frequently misconfigured.
OWASP ZAP: A premier, completely free, open-source alternative with deep automation capabilities. Crucial Burp Extensions Once you have a list of subdomains, check
[ Target Domain ] │ ┌───────┴───────┐ ▼ ▼ [ Subdomain ] [ Port Scanning ] [ Discovery ] │ │ ▼ │ [ Services & ] ▼ [ Versions ] [ Directory ] │ [ Busting ] ────────┘ │ ▼ [ Attack Surface Map ] Passive Recon
GET /api/v1/view_profile?user_id=10023 HTTP/1.1 Authorization: Bearer [User_A_Token] Look for legacy frameworks, unmaintained PHP instances, or
SSRF occurs when an attacker forces a server to make an HTTP request to an unintended destination.