> 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/authentication/username-enumeration-via-subtly-different-responses.md).

# 通过细微不同的响应进行用户名枚举

### 通过细微不同的响应进行用户名枚举

该网站在用户名枚举以及粗暴的密码暴力破解方面略有漏洞。/ 一个账户使用了所提供的词表中存在的用户名和密码。/ 目的：找到一个有效的用户名，暴力破解密码，然后访问 **我的账户** 页面。

#### 实验室数据

* 用户名词表（认证实验室用户）。
* 密码词表（认证实验室密码）。
* 标准登录表单。

#### 步骤 1 – 用户名列表

1. 拦截登录表单请求并将其发送到 **Intruder**.

<figure><img src="/files/1f4ba54b63015df583bba7f45d97c6b4e1d9853e" alt=""><figcaption></figcaption></figure>

* 对……发起攻击 **username** 参数，使用用户名词表。
* 默认情况下，服务器返回消息：/ `用户名或密码无效`.

<figure><img src="/files/578b9b1a71a1f51c1fefee85237642cbd1c39b1c" alt=""><figcaption></figcaption></figure>

* 在 **设置**dIntruder，设置一个条件用于 **不匹配** 此通用响应（以便过滤相同的响应）。

<figure><img src="/files/937176e75509df6df3d647037e43c487d2a98d51" alt=""><figcaption></figcaption></figure>

* 观察结果时，我们发现有一条记录的响应略有不同：/ 一条消息中没有通常句点的响应，与用户相关 **alpha**.

<figure><img src="/files/a0fdd6fa035649a1a99de8bc64b5723074ad6d8f" alt=""><figcaption></figcaption></figure>

由此推断 **alpha** 是一个有效的用户名。

<figure><img src="/files/7261b49de70bcd502090d23b1d7969d489e601b0" alt=""><figcaption></figcaption></figure>

#### 步骤 2 – 暴力破解密码

1. 保持相同的登录请求，并将 **alpha** 固定为用户名。
2. 配置 Intruder 以攻击 **密码** 参数，使用密码词表。
3. 启动攻击并比较服务器响应。
4. 对于密码 **123456**，答案是一个 **302** 在备注中标记为 ok，表示连接尝试成功。

<figure><img src="/files/fe83e5ecefd755dd58bc251f5c81285d473c7ffe" alt=""><figcaption></figcaption></figure>


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