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paloaltoの解析講座3:Wireshark

Posted at
  • paloalto解析講座の続き

UserAgent から Windows OS Version を 特定

Windows NT Version Windows OS Version
Windows NT 5.1 Windows XP
Windows NT 6.0 Windows Vista
Windows NT 6.1 Windows 7
Windows NT 6.2 Windows 8
Windows NT 6.3 Windows 8.1
Windows NT 10 Windows 10 または Windows 11

解析講座で使用したFilter

  • 名前解決をするプロトコル
    ホスト名の確認が可能。
    screenshot 12.png
    screenshot 13.png
Dynamic Host Configuration Protocol
dhcp
NetBIOS Name Service
nbns

  • ヘッダーの指定方法
    一般的にWebブラウザが作成するヘッダーとのこと
    httpだけだと、ブラウザでないHTTPの通信も表示される
HTTP from Browser
http.accept_language

  • ケルベロス認証からホスト名の確認が可能
    screenshot 14.png
  • Columnに追加を選択。
    screenshot 16.png
  • Columnに一覧で確認できるようになった。
    screenshot 17.png
Kerberos Authentication
kerberos.CNameString

  • LDAPからホスト名の確認が可能
    screenshot 18.png
Lightweight Directory Access Protocol
ldap contains "CN=Users"

  • IP以上のレイヤーから、平文のASCII文字列検索
Computer Name (Windows)
ip contains "DESKTOP-"

文字列の検索

  • Edit Find Packet…を選択して、入力欄を表示
    screenshot 10.png

  • Packet details Stringを選択し、検索を実行
    Wiresharkでデコードされた結果からも検索できる
    screenshot 11.png

  • 以上です。
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