Port 5357 Hacktricks Page

If the WS-Discovery service is misconfigured or poorly restricted, unauthenticated attackers on the local network can query the endpoint to map internal device configurations. This includes: Computer hostnames Unique Device UUIDs Internal network configurations and interface details B. Exploiting the Underlying HTTP Stack ( http.sys )

Disabling unnecessary services is a core principle of system hardening. Securing port 5357 is crucial for both network defenders and security analysts.

During the internal phase of a penetration test, Port 5357 helps map the active network topology. By listening to WSD broadcast requests or querying the endpoints, an attacker can pinpoint high-value targets like domain controllers, print servers, and executive workstations without generating noisy traffic on traditional SMB ports (like 445). 3. NTLM Relay and SSRF Targets

The story took a darker turn as the analyst dug into legacy vulnerabilities. In older systems like Windows Vista and Server 2008, a critical memory corruption flaw (MS09-063) once allowed attackers to achieve Remote Code Execution port 5357 hacktricks

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Protecting systems against exploitation of port 5357 involves a multi-layered approach. If the WS-Discovery service is misconfigured or poorly

Or perhaps you'd like to explore this port via Group Policy? PentestPad

Instead, look for tools or scripts designed to send proper SOAP/XML encapsulation requests to the WS-Discovery multicast address to force the target target on port 5357 to reveal its unique endpoint URL. 3. Potential Exploitation Vectors

HTTP/1.1 404 Not Found Content-Type: text/html; charset=us-ascii Server: Microsoft-HTTPAPI/2.0 Date: Wed, 03 Jun 2026 12:00:00 GMT Connection: close Content-Length: 315 Use code with caution. Securing port 5357 is crucial for both network

During a penetration test or a Capture The Flag (CTF) competition, encountering an open port 5357 offers a unique avenue for network enumeration and information gathering. This article breaks down how port 5357 works, how to enumerate it using tools found in the HackTricks methodology, and how to secure it. 1. What is Port 5357 (WS-Discovery)?

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

Understanding Port 5357: Security Analysis and Exploitation Guide