webPromedium

PingForge

hackadvisor

Task: PingForge webhook platform with URL validation blocklist preventing SSRF to internal metadata service on localhost:3001. Solution: Bypass blocklist using IPv6-mapped IPv4 address (::ffff:127.0.0.1) to reach internal /credentials endpoint and extract flag from AWS IAM secret_access_key.

$ ls tags/ techniques/
ssrf_via_webhookipv6_mapped_ipv4_bypassurl_validation_bypassinternal_service_enumerationwebhook_delivery_log_exfiltrationdecoy_flag_avoidance

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