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Author Topic: Router User Pass Hack  (Read 21887 times)
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serfczar
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« on: August 11, 2007, 03:06:50 AM »

Hi, my isp provided me with a router that neither they nor I know the password to. They pointed me towards the manufacturer to get the password but they don't know it either. The isp obviously changed some settings in it to get it to work with the dsl connection.

I'm trying to set up apache and I need to get into the settings of this router to effectively know what is going on with my network.

Does anyone here know a way to get the user and pass details for this router?

I thought about using brutus, would this be the best approach?
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don
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« Reply #1 on: August 11, 2007, 03:14:02 AM »

Welcome to EH-Net. Interesting that they didn't provide the PW or a way to change it. But, without the name of the manufacturer and the model, probably won't be able to offer much help.  Huh

Many routers have a way to reset it back to the default settings by holding a button or something while restarting it. Did you ask them if they have such an option?

Don
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Manu Zacharia (-M-)
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« Reply #2 on: August 11, 2007, 07:11:45 AM »

Please provide the Product Name / Model Number for the router so that we can try finding the default username and password for the product.

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Manu Zacharia
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serfczar
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« Reply #3 on: August 11, 2007, 09:50:23 AM »

If I reset the router my IPTV no longer will work.

This is a COMTREND adsl 2+ router.
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Manu Zacharia (-M-)
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« Reply #4 on: August 11, 2007, 12:08:28 PM »

Try the default password for these models:

Comtrend ct-536+ HTTP admin admin Admin
Comtrend ct-536+ HTTP admin 1234 Admin

Also, a good list for default username and passwords for routers:

http://www.irintech.com/x1/blogarchive.php?id=764

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Manu Zacharia
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There are 3 roads to spoil; women, gambling & hacking. The most pleasant with women, the quickest with gambling, but the surest is hacking - c0c0n
serfczar
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« Reply #5 on: August 12, 2007, 12:13:30 PM »

tried it, no avail. model number ct-5621
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jimbob
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« Reply #6 on: August 12, 2007, 03:26:44 PM »

Hi,
There is often a way to reset a router to the factory settings, which ought to reset the password to the default. This will of course remove any configuration changes the ISP has made. You may be able to find a manual for your router on the net if you've not been supplied with one by your ISP.

Regards,
Jim
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serfczar
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« Reply #7 on: August 13, 2007, 07:28:55 PM »

I've already stated that I don't want to reset it because it will take off settings my isp put on it, then my iptv will not work.
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Manu Zacharia (-M-)
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« Reply #8 on: August 13, 2007, 07:48:47 PM »

If your default password is not working and if you do not want to reset the router, then the next best option is to break it. Various options are available - brutus is a good option as it currently supports HTTP and telnet.
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Manu Zacharia
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Certified ISO 27001:2005 Lead Auditor

There are 3 roads to spoil; women, gambling & hacking. The most pleasant with women, the quickest with gambling, but the surest is hacking - c0c0n
LSOChris
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« Reply #9 on: August 13, 2007, 09:04:59 PM »

why dont you call your ISP, tell them your router "is not working" and have them bring you a new one that they do know the password for?
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BillV
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« Reply #10 on: August 13, 2007, 10:13:33 PM »

why dont you call your ISP, tell them your router "is not working" and have them bring you a new one that they do know the password for?

Amen.
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don
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« Reply #11 on: August 14, 2007, 12:31:00 AM »

But that takes all the fun out of it, doesn't it?  Roll Eyes

Don
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Kev
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« Reply #12 on: August 22, 2007, 09:33:06 AM »

True that!  Besides cracking the router password should not be too difficult if its any kind of default password.  The first thing to do is try old fashion password cracking. You manually enter every default router password , even for other manufacturers, that you can find. This might take a little time but thats how it was done years ago. Some determined hackers would spend days trying to guess the password. If the router doesn't have a lock out function, you could write a simple bash script to do it for you assuming you have a pre-complied list of common passwords.  If you get no where, then try more phone calls to the ISP. Try to get beyond the help desk and use a little social engineering. You might be surprised how far you get if you just use a little friendly persuasion and remember that somebody knows the password there!   Any way, this can be a wonderful exercise in basic password cracking if one is into it and its legal! 
« Last Edit: August 22, 2007, 09:37:48 AM by Kev » Logged
jimbob
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« Reply #13 on: August 22, 2007, 11:11:59 AM »

If you have access to a firmware image for the modem you could try to extract the password from it. I did this once on a conexant-based router. My write up of the actions I took to do this is here...

http://www.watersheep.org/~jim/codecracking/conexant.html

Regards,
Jimbob
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