Download v1.2 (for Windows 95 / 98 / ME / NT 4.0 / 2000 / XP / 2003 / Vista)


Tini is a simple and very small (3kb) backdoor for Windows, coded in assembler. It listens at TCP port 7777 and gives anybody who connects a remote Command Prompt.

Usage instructions

Download the file, rename it from .dat to .exe, and run it. Connect (with an ordinary telnet client or similar) to TCP port 7777 and press Enter once, now you'll see the Command Prompt and be able to type commands.


Q: I can connect to port 7777 but nothing happens, what's wrong?

A: You have to press Enter once to get the prompt. If it doesn't help, make sure you have the most recent version downloaded from ntsecurity.nu.

Q: How do I uninstall Tini?

A: Just reboot Windows, Tini doesn't install itself in any way. If it has been used by an intruder he/she might have installed it to be run automatically on reboot, but that's not a feature in Tini itself.

Q: Why have you created a trojan, isn't that kind of destructive?

A: Tini isn't meant to be used as a trojan. It's meant to be used as a backdoor, or a way to run commands remotely, when trying out security related things in a laboratory or similar.

Q: Which commands can I use?

A: Tini lets the regular Command Prompt execute your commands, so you can use any command that you can run in the regular Command Prompt. Try the "help" command to get a list.

Q: Why does my antivirus program say there is a virus in Tini?

A: Probably because some antivirus programs call all hacking tools, backdoors and trojans "viruses". There is no functionality in Tini except from what is described here and it is definately not a virus.

Q: I have a question that is not covered here. Where can I get help?

A: Send me your question. I can't promise that I will have time to answer, but I'll do my best.

© Arne Vidstrom. All rights reserved.