Full Disclosure mailing list archives
RE: How to easily bypass a firewall...
From: "Sir Humpsalot" <sirhumpsalot97 () hotmail com>
Date: Wed, 30 Jul 2003 04:27:17 +0200
> At 03:49 PM 7/28/2003 -0500, you wrote: > >5. Firewall dialog box uses random numbers / letters represented by > >graphics that the user has to enter in a password field if > the password > >is not correct sound alarm, halt system. > > know of anything that does this? > Would it matter? The scenario that was proposed is that there's a trojan on the box, and it can attempt certain methods of programmatically disabling the firewall. If there's a trojan on the box, what does it matter? *Anything* on the box can be disabled at that point. If I break in to a Linux box, for example, all I have to do, once I have root, is type: % /etc/rc.d/init.d/ipchains stop If it's a Windows box, I just kill the service: C:\ sc stop {firewall servicename} Or install the pstools to do it. The point is, once the box is owned, nothing else matters.
What you're doing requires admin/root privileges.You don't need to be an admin to enable the trojan Internet access. Most/all windows firewalls (eg. Sygate and if I remember correctly, at least one of Norton and ZoneAlarm) allow limited users to decide if an app should have access to the Internet. That is, they don't care if you're an admin or a user. Thus a trojan doesn't need to be running as an admin; a limited user is enough to access the Internet. Just click YES when they ask the user if he/she wants to allow the program Internet access...
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Current thread:
- How to easily bypass a firewall... Sir Humpsalot (Jul 28)
- RE: How to easily bypass a firewall... Nate Johnson (Jul 28)
- RE: How to easily bypass a firewall... compguruman (Jul 29)
- Re: How to easily bypass a firewall... Kain (Jul 29)
- Re: How to easily bypass a firewall... Karl DeBisschop (Jul 29)
- RE: How to easily bypass a firewall... compguruman (Jul 29)
- RE: How to easily bypass a firewall... Nate Johnson (Jul 28)
- <Possible follow-ups>
- RE: How to easily bypass a firewall... Schmehl, Paul L (Jul 29)
- Re: How to easily bypass a firewall... CHeeKY (Jul 29)
- RE: How to easily bypass a firewall... Sir Humpsalot (Jul 29)