While WSD is a convenient feature for local networks, it is often overlooked in security assessments. When left exposed or misconfigured, port 5357 can become a significant attack vector, leading to information disclosure, lateral movement, and even remote code execution.
In complex enterprise environments, web service discovery protocols can sometimes be coerced into making outbound requests. If an attacker can inject a malicious URL into a discovery request, they might trigger a Server-Side Request Forgery (SSRF) or force the system to authenticate against a malicious SMB share, capturing NetNTLM hashes. 4. Remediation and Hardening
On modern Windows installations, you will find that port 5357 is handled directly by the kernel HTTP protocol stack ( http.sys ) and runs under the System process ( PID 4 ), abstracting its presence away from standard standalone web application managers like IIS. Enumeration and Fingerprinting port 5357 hacktricks
WS-Discovery responds to SOAP requests. Attackers can craft XML queries to force the system to dump metadata. This metadata often includes computer names, domain details, internal IP addresses, and unique hardware IDs. 3. NTLM Relay Attacks
Port 5357 runs the Web Services on Devices API over HTTP (WSDAPI). It allows Windows machines to discover and control devices on a local network using standard web service protocols. Why is it Exposed? While WSD is a convenient feature for local
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The fluorescent lights of the server room hummed in a frequency that always gave Elena a mild headache. She cracked her knuckles, the sound sharp in the quiet room. On her screen, the target was a mid-sized accounting firm—let's call them "Ledger & Sons"—who had failed their annual penetration test. If an attacker can inject a malicious URL
This guide will walk you through everything you need to know to test and secure this port from a red team and blue team perspective.
Look for <wsdp:Get> – this allows you to request internal device info.
Remember: in red teaming, every open port is a story waiting to be exploited.
By looking up the service name discovered during enumeration, the penetration tester was able to identify that this specific HTTPAPI service was vulnerable to a known exploit. In this particular VAPT, the tester successfully used a Metasploit module to compromise the system. The report confirmed the exploit worked reliably, granting a high level of access to the target.