hacktricks/pentesting/pentesting-ftp/ftp-bounce-attack.md

<details>

<summary><strong>Support HackTricks and get benefits!</strong></summary>

Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!

Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)

Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)

**Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/carlospolopm)**.**

**Share your hacking tricks submitting PRs to the** [**hacktricks github repo**](https://github.com/carlospolop/hacktricks)**.**

</details>


# FTP Bounce attack - Scan

## FTP Bounce - Scanning

### Manual

1. Connect to vulnerable FTP
2.  Use **`PORT`**or **`EPRT`**(but only 1 of them) to make it establish a connection with the _\<IP:Port>_ you want to scan:

    `PORT 172,32,80,80,0,8080`\
    `EPRT |2|172.32.80.80|8080|`
3. Use **`LIST`**(this will just send to the connected _\<IP:Port>_ the list of current files in the FTP folder) and check for the possible responses: `150 File status okay` (This means the port is open) or `425 No connection established` (This means the port is closed)
   1. Instead of `LIST` you could also use **`RETR /file/in/ftp`** and look for similar `Open/Close` responses.

Example Using **PORT** (port 8080 of 172.32.80.80 is open and port 7777 is closed):

![](<../../.gitbook/assets/image (225).png>)

Same example using **`EPRT`**(authentication omitted in the image):

![](<../../.gitbook/assets/image (226).png>)

Open port using `EPRT` instead of `LIST` (different env)

![](<../../.gitbook/assets/image (228).png>)

### **nmap**

```bash
nmap -b <name>:<pass>@<ftp_server> <victim>
nmap -Pn -v -p 21,80 -b ftp:ftp@10.2.1.5 127.0.0.1 #Scan ports 21,80 of the FTP
nmap -v -p 21,22,445,80,443 -b ftp:ftp@10.2.1.5 192.168.0.1/24 #Scan the internal network (of the FTP) ports 21,22,445,80,443
```


<details>

<summary><strong>Support HackTricks and get benefits!</strong></summary>

Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!

Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)

Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)

**Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/carlospolopm)**.**

**Share your hacking tricks submitting PRs to the** [**hacktricks github repo**](https://github.com/carlospolop/hacktricks)**.**

</details>