Re: [PEN-TEST] War Dialers, Brute Force, etc.

["Dawes, Rogan" <rdawes () DELOITTE CO ZA>]

One such tool is brutus.

It allows you to design your own chat script that you can use to perform the
brute force attack.  It comes with predefined scripts for telnet, POP, imap,
smb, ftp, etc, I recall.

Seems OK.

Rogan

> -----Original Message-----
> From: Vanja Hrustic [mailto:vanja () RELAYGROUP COM]
> Sent: Sunday, September 03, 2000 5:42 AM
> To: PEN-TEST () SECURITYFOCUS COM
> Subject: [PEN-TEST] War Dialers, Brute Force, etc.
>
>
> On Fri, 1 Sep 2000, Todd Beebe wrote:
>
> > Toneloc is good for finding modems.  But, the value of the
> commercial
> > products (both TeleSweep Secure and PhoneSweep) is the
> username/password
> > guessing (read vulnerability testing).
>
> Now that you mention this...
>
> I wonder if there are any commercial tools that enable you to do
> 'extensive' (I don't know if this is the good word :) brute
> force against
> remote systems? I'm not talking about "dial a modem and gues
> user/pass"
> only. I'm talking about brute-force against various services (POP3,
> telnet, etc.), finding valid users (finger, SMTP using expn
> or 'rcpt to:',
> using '~username' on web servers, etc.), 'bouncing'...
>
> For example:
>
> During the test, you manage to get into a switch that was
> 'forgotten', and
> you can use it to connect to systems behind the firewall (I'm not
> inventing this, so no flames, please :).
>
> Now, in order to do brute force, you *must* connect through
> that switch -
> you can't connect directly. Are there any commercial tools
> that provide
> 'features' like this, where one needs to establish 1 or more
> sessions to
> remote host(s) before actually running brute force?
>
> Or, you dial into some terminal server (or whatever), and
> from there you
> can connect to the remote system in order to perform brute-force.
>
> Or, in there is badly configured proxy server that will let
> you connect to
> 'internal' systems using CONNECT (or GET), and from there you
> can start
> brute force.
>
> Simply, are there any tools that can take advantage of all the
> 'misconfigurations' on the remote network, or all the tools
> assume that
> you will just brute-force the 1st system you connect to?
>
> Also, how do all those 'commercial' (well, let's say
> "proprietary" - it
> doesn't have to be commercial, but important thing is that you can't
> modify it easily) tools determine what kind of dictionary
> they should use?
> Does person who run the tool need to choose before the brute
> force starts,
> or ... ? Tool chooses it based on banners maybe? I ask that for silly
> reason - I've used to modify /bin/login (for fun only, long ago, but I
> know that some people are still doing things like this :) so
> that when you
> connect to the UNIX box and try to login, you'll see
> something like (and
> hear a 'beep' as well ;):
>
> Welcome to VAX/VMS 5.5 on node WHATEVER
>
> Username: TEST
> Password:
> User authorization failure
> Username:
> etc...
>
> What would 'automated' tool to in this case? (try to send
> CTRL+Z first? ;)
>
> My (well, I should say "our" :) 'choice' for all
> brute-forcing tools is -
> Perl (plus IO::Socket and few other modules, when/if needed).
> But again,
> for me it's more important "what dictionary I'm using" than
> "what tool I'm
> using" :)
>
> I wonder what other people are using :)
>
> Thanks.
>
> Vanja Hrustic
> The Relay Group
> http://relaygroup.com