FTP Bounce - Download 2ºFTP file - HackTricks

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# Resume

If you have access to a bounce FTP server, you can make it request files of other FTP server (where you know some credentials) and download that file to your own server.

## Requirements

- FTP valid credentials in the FTP Middle server
- FTP valid credentials in Victim FTP server
- Both server accepts the PORT command (bounce FTP attack)
- You can write inside some directory of the FRP Middle server
- The middle server will have more access inside the Victim FTP Server than you for some reason (this is what you are going to exploit)

## Steps

1. Connect to your own FTP server and make the connection passive (pasv command) to make it listen in a directory where the victim service will send the file
2. Make the file that is going to send the FTP Middle server t the Victim server (the exploit). This file will be a plaint text of the needed commands to authenticate against the Victim server, change the directory and download a file to your own server.
3. Connect to the FTP Middle Server and upload de previous file
4. Make the FTP Middle server establish a connection with the victim server and send the exploit file
5. Capture the file in your own FTP server
6. Delete the exploit file from the FTP Middle server

For a more detailed information check the post: http://www.ouah.org/ftpbounce.html

> [!TIP] Learn & practice AWS Hacking:HackTricks Training AWS Red Team Expert (ARTE)
> Learn & practice GCP Hacking: HackTricks Training GCP Red Team Expert (GRTE)

> Support HackTricks
> - Check the subscription plans!
> - Join the 💬 Discord group or the telegram group or follow us on Twitter 🐦 @hacktricks_live.
> - Share hacking tricks by submitting PRs to the HackTricks and HackTricks Cloud github repos.