Net send all command!

Dokinator · 20 Feb 2013 at 15:30

Was recently in discusion with one of my mates who I went to school with. As you do people always find out backdoors and ways to do things when your on school computers. Was just wondering if anyone else has used the 'net send all' command through CMD on a domain network as a joke?...
Childish but we sent "Free Pickles at ASDA!" to over a 1,000 machines on the school network.

Burnsy2023 · 20 Feb 2013 at 15:33

We all did it as children, but it's not a backdoor by any means, it's not even obscure. This is exactly why it's disabled by default on later WinXP service packs.

Monkeynut · 20 Feb 2013 at 15:33

Edgy story brah.

Dokinator · 20 Feb 2013 at 15:35

Was kind of a back door as CMD is blocked by admins and we created a batch file to bring up a dos window

Burnsy2023 said:
We all did it as children, but it's not a backdoor by any means, it's not even obscure. This is exactly why it's disabled by default on later WinXP service packs.

Burnsy2023 · 20 Feb 2013 at 15:38

Dokinator said:
Was kind of a back door as CMD is blocked by admins and we created a batch file to bring up a dos window

No, not really.

I've also worked on the other side of the fence and it's genuinely quite amusing to see what people do when they think they're being clever.

That said, I was a little **** at school when it came to computer security and had way more access than I ever should have. But we live and learn and eventually grow up.

Mr^B · 20 Feb 2013 at 15:38

Yes, about 28 years ago that was considered to be an excellent way to pass time in CS lessons.

*edit* of course, back then it was a similar network command via the Ethernet token-ring networked BBC Model B.

Cosimo · 20 Feb 2013 at 15:38

Don't let the net police hear you talking about this as the penalty will be 1000 lines after school.

Vulcan · 20 Feb 2013 at 15:40

Hey guys, I head you can get the internet on computers now, is this true?

DJMK4 · 20 Feb 2013 at 15:40

To be honest the shutdown command was much more fun, watching people panic as they had little or no time to save any work before shutdown

in school and college obviously

Dokinator · 20 Feb 2013 at 15:41

This was years ago by the way, was funny to see it pop up on everyones screens and them not knowing what to do. Wouldent dream of doing it on my work network

Dokinator · 20 Feb 2013 at 15:42

Yes and that, also making a batch file for the CD drive to keep popping in and out XD

Burnsy2023 · 20 Feb 2013 at 15:42

DJMK4 said:
To be honest the shutdown command was much more fun, watching people panic as they had little or no time to save any work before shutdown in school and college obviously

Really? Sending a shutdown command requires local admin rights. How did you get them?

Dokinator · 20 Feb 2013 at 15:43

Burnsy2023 said:
Really? Sending a shutdown command requires local admin rights. How did you get them?

Just create a batch file with the shutdown command and a timer, only way to stop is to stop the process in task manager i beleive

Burnsy2023 · 20 Feb 2013 at 15:45

Dokinator said:
Just create a batch file with the shutdown command and a timer, only way to stop is to stop the process in task manager i beleive

No, you need elevated rights to execute that command on a remote machine (and even the local one IIRC). You can't run it on any old machine without specific account privileges.

And shutdown -a would stop it. That's what you had to do when you had the MS Blaster malware.

Dokinator · 20 Feb 2013 at 15:48

Burnsy2023 said:
No, you need elevated rights to execute that command on a remote machine (and even the local one IIRC). You can't run it on any old machine without specific account privileges.

And shutdown -a would stop it. That's what you had to do when you had the MS Blaster malware.

I thought you could create the batch file and send in an email. Once user clicks on the file it starts the timer, you still need elevated permissions then?

randal · 20 Feb 2013 at 15:48

Ah memories of using object packager in Windows 3.11 to insert PIFs into word documents to launch programs...

Tunney · 20 Feb 2013 at 15:48

1) Open Q-BASIC on mate's PC
2) Type in:

10 BEEP
20 GOTO 10

3) Run before the teacher tells them off

m00ch0 · 20 Feb 2013 at 15:50

I know its not that relevant but reminded me of this.

When I was in college, I was playing around with the outlook default email and found a strange way that could send emails from anyone's address on the network to anyone on the network (College email server).

Sent a message from one really annoying guy to another sitting next to him, saying touch my leg I wont tell. The face of the one guy was priceless.

The other from a teacher saying see me after class its about all the pornography you've been storing on the college computers.

Dokinator · 20 Feb 2013 at 15:52

m00ch0 said:
I know its not that relevant but reminded me of this.

When I was in college, I was playing around with the outlook default email and found a strange way that could send emails from anyone's address on the network to anyone on the network (College email server).

Sent a message from one really annoying guy to another sitting next to him, saying touch my leg I wont tell. The face of the one guy was priceless.

The other from a teacher saying see me after class its about all the pornography you've been storing on the college computers.

Classic! aha

Burnsy2023 · 20 Feb 2013 at 15:52

Dokinator said:
I thought you could create the batch file and send in an email. Once user clicks on the file it starts the timer, you still need elevated permissions then?

I'm pretty sure that any user that executes it locally or remotely will need local admin rights, so this wouldn't work. You'd just get an access denied message.