mDNS-enum: mDNS Enumeration

id: mDNS-enum

info:
  name: mDNS Enumeration
  author: matejsmycka
  severity: low
  description: |
    mDNS may disclose details about services running on a local network. When mDNS traffic is accessible from the public Internet, attackers can exploit it to map internal services. If exposure is suspected, perform enumeration with tools such as dig to collect additional information.
  metadata:
    verified: true
    shodan-query: port:5353
  tags: dns,udp,mdns,enum,js,enum

javascript:
  - pre-condition: |
      isUDPPortOpen(Host,Port);

    code: |
      let c = require("nuclei/net");
      let conn = c.Open('udp', `${Host}:${Port}`);
      // same as dig @<HOST> -p 5353 _services._dns-sd._udp.local PTR
      let packet = "e3bc01200001000000000001095f7365727669636573075f646e732d7364045f756470056c6f63616c00000c000100002904d000000000000c000a00083e6e072b14fd0be3"
      conn.SendHex(packet);
      let resp = conn.Recv(512);
      resp;

    args:
      Host: "{{Host}}"
      Port: 5353

    matchers:
      - type: dsl
        dsl:
          - "success == true"

    extractors:
      - type: regex
        regex:
          - "workstation"
          - "http"
          - "smb"
          - "qmobile"
          - "qdiscover"
          - "ftp"
          - "nut"
          - "dacp"
          - "airplay"
          - "device-info"
          - "home-assistant"
          - "spotify-connect"
          - "sftp-ssh"
          - "ssh"
          - "afpovertcp"
          - "googlecast"
          - "printer"
          - "occam"
# digest: 4b0a00483046022100e5549b8c050e75530c058f5ebca15ac24c21135dda65f2f8a998185208f19223022100dde4a9a4fb4caef734a7747820fbe3220086871a055861b6779c3fc428bf748c:922c64590222798bb761d5b6d8e72950