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第5回ハニーポッター技術交流会の発表資料です
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Hanipotec05 railreku
1.
脆弱性診断とハニーポット らいる@railreku
2.
自己紹介 • WebサイトやAPIに関する脆弱性診断に関わる傍ら、 ファジングに関する調査検証を行う。 • ネットワーク管理、ハニポ運用も担当 •
発表資料から一部カット
3.
大事なこと
4.
小ネタ 来てた人向けのちょっとしたお得情報でした
5.
今回のポイント • 脆弱性診断にもハニーポットを活用する余地はある(かも) • 仕事の名目でハニポを運用してログ分析もできる(たのしい) •
週次レポートとか書くことで習慣づく、分析の半自動化も試みたりや りがいが増える
6.
なぜ脆弱性診断でハニーポット? ハニーポットたのしい!(しろめ)
7.
なぜ脆弱性診断でハニーポット? • でもハニーポット楽しいだけじゃ業務でハニーポット立てれない・・ • お金にならない •
許可がでない • なんの意味があるん • 脆弱性診断とハニーポットに親和性を持たせられないか? • しかし防御手法に近しいハニーポットはなかなか攻撃側の脆弱性診断に関 わる要素がない • 攻撃手法だけならゼロデイでもない限りPoCは調べれば出る
8.
脆弱性診断とハニーポットを結びつける何 か なにかないかなにかないか なにかないかなにかないか なにかないかなにかないか
9.
脆弱性診断とハニーポットを結びつける何 か • スキャン通信を検知するケースは多い。 • もしかしたら新しいスキャンを検知するかも? •
そもそも一般的スキャナはどうでもいい。ほしいのはオリジナルのス キャナだ。 • ならすでに起こっているスキャンを拾えばいい。
10.
WOWHoneypotを使わせてもらいました • 選定理由 • 余計な機能がなくて軽量 •
余ってるノートPCにubuntu乗っけて入れた • 他のサービスをオープンしないように厳命された • 興味があった • Cowrieやdianaeaは触ったことがあったが、新しく出てきたし触ってみたい • 技術書典4で同人を出すらしい
11.
何ができるようになったか • WOWHoneypotで検知したアクセスパターンからdirbを用いたオリジ ナルスキャンパターン • 4月からの蓄積だけでも従来のスキャンでは得られなかったパターンが300 件ほどある •
社内向け検知レポート • 他の顧客で検知した情報は出せないが、自チーム向けの攻撃ならいくらで も出せる • 報告会などで使えるのでうれしいとフィードバック受けた(自分もうれしい)
12.
週次レポート • 今週の検知傾向 • 特徴的な攻撃に関して抽出 •
総検知傾向分析 • 総検知数、それぞれの攻撃種類ごとの総数 • 参考情報(参考URL) • 調査した結果他のハニーポッターの傾向との違いとかを分析 • PoCを掲載
13.
円滑な分析のコツ(主観) • 1週間の通信ログを抽出するスクリプトを作る • 通信ログをBase64デコードした結果を別ファイルに書き出すスクリプ トを作る •
送信元IPである程度まとめてしまう
14.
今後の展望 • HTTPでdirbのパターンを増やすメリット以外にもでてきたから他の サービス向けハニポを立てる • T-POTで楽々構築でもいいかもしれんけど、多少カスタマイズもしたいな •
社内のパケット解析基盤を導入して自動ログ解析基盤を作る • 借りれたけど要求スペックが高いから検討中・・
15.
ご清聴ありがとうございました 質問は らいる@railreku まで
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