Tag Archives: infosec island

Weaponizing the Nokia N900 – Part 3.6 – Portable Rogue AP Point

With continuing the series of weaponizing the N900 and hoping that Infosec Island will continue with their series as well, I have successfully setup my N900 as a rogue AP point.

Firstly, to effectively deploy it you want to make sure your cell phone service (3G for the N900) is quite strong. You may even want to try pinging google or the like and see what the delay is. With a good connection, it will very for me between 70 and 90 milliseconds.

Second, you want to survey the site you’re going to deploy your portable rogue ap point. Luckily, you can run kismet on the N900. Once you have surveyed the site for other AP points, take note of the MAC addresses of each AP point that is specific to the area and also take note of the names of the AP points. With this mac address you can spoof your wlan0 interface to something that is very similar:

ifconfig wlan0 hw ether 00:XX:XX:XX:XX:XX

You will need to have the extra repos enabled to install an application called mobilehotspot. You will also need prior to this, to install the custom kernel for the N900. You will also need ettercap and sslstrip to carry out this attack. See my earlier post for notes on the two: http://zitstif.no-ip.org/?p=451

1.) Get sslstrip up and running, and make sure you have iptables. For steps on using sslstrip check out:
http://www.thoughtcrime.org/software/sslstrip

2.) Spoof your wlan0 hardware address to what is appropriate for the site.

3.) Run the mobilehotspot application.

4.) Wait for a few seconds

5.) Run ettercap by doing so (modify as needed):
ettercap -i wlan0 -q -T -p -u // //

The reason why we don’t have ettercap forward packets, is because the kernel is already doing so due to the mobilehotspot application.

That is pretty much it. You could also do dnsspoofing to send your victims to a server under your control to do drive by attacks.

Weaponizing the Nokia N900 – Part 3.5

Due to my love of hand held devices that can be used for penetration testing, I have obtained a Nokia N900 for relatively cheap on eBay. A brand new N900 will burn you a hole about the size of $399 USD in your pocket. However, I obtained mine (a refurbished one) for about $285.

Granted this device is now 2 years old but in my opinion it can be setup as a solid security assessment tool. I thought I would write a de facto continuation of the “Weaponizing the Nokia N900″ series that Infosec island has done. (I hope they don’t mind 🙂 )

With the N900 being an old man, in terms of technology, one can spruce it up a bit via overclocking. I would highly suggest to check out:

http://thehandheldblog.com/2010/07/27/how-to-easily-overclock-your-n900-in-under-two-minutes/

I have mine overclocked to 750MHZ and it seems to be running just fine. Metasploit will load in about a minute or so. Which is not nearly as bad as running Metasploit on the N810 (which I was able to do by just following the same instructions for getting Metasploit to run on the N900). The N810, the last time I checked, took 15 minutes to load Metasploit.

Bear in mind that my tips imply that you have already enabled all the extra repositories as needed, if you haven’t done so check out:

http://www.nokian900applications.com/repositories-extras-extras-devel-and-extras-testing-for-nokia-n900/

As stated and shown before, there have been guides on weaponizing the N900. However some of these guides have failed to explain certain issues that I would like to address:

1.) The ettercap-ng package from the repositories is totally broken. I ended up having to download ettercap from this forum post and follow the instructions on it appropriately:

http://talk.maemo.org/showthread.php?t=42680

2.) sslstrip will work, and you have to follow the comments addressed on this web page to get it setup along with a few other things:

http://www.knownokia.ca/2010/04/using-n900-for-fun-and-profit.html

a.) You have to install iptables  (apt-get install iptables)

b.) You have to install another python package, (apt-get install python-openssl)

3.) The Metasploit package comes in in a tar.bz2 format. For some odd reason, the version of tar (the busy-box version) cannot do ‘-xjf’. So either you have to install the gnu version of tar or put metasploit on a computer that can extract it and put it into a format that can be decompressed on the n900.

4.) I wasn’t able to find netcat in the repositories. If you’re in the same boat, you’ll have to port it over or get a chroot environment setup. (easydebian)

Lastly, here is my original way of weaponizing the n900 even more so.

You’ll need a MicroSD card that you’re currently not using and you don’t mind wiping it and making it bootable. Also, you’re going to need BackBox iso (yes.. not BackTrack 4, I will explain later) and unetbootin.

Obtain BackBox from:

http://www.backbox.org/content/download

Obtain unetbootin from:

http://unetbootin.sourceforge.net/

1.) Install your Microsd card into the N900, by removing the back plate.

2.) Connect your n900 via the USB cable that came with it to your N900.

3.) When you get a prompt on your n900 from connecting it to your computer, choose the Mass storage device mode.

4.) Now, 2 drives should show up, (depending on if you’re using Windows or if you have automount setup under Linux). The drive that is the size of your MicroSD card, is your MicroSD card. (I know.. DUH)

5.) Fire up unetbootin, select Diskimage option, locate where you downloaded the BackBox iso and select it.

6.) Make sure you have the correct drive selected and finally click ‘OK’.

7.) Once the process is done, reboot your computer.

8.) Hit F2 (or it could be other keys, like F9) for your BIOS or better yet if there is an option for a boot menu, hit that key.

9.) Select to boot off of the N900 (some BIOS will show two and not differentiate the two, while other BIOS will state that there is a removable n900. If you’re not sure, just change your boot order to have both N900’s as the first and second boot devices. If your BIOS shows the removable N900, this is the one you want to boot off of.)

10.) Your computer should now be booting off your MicroSD card which is in your N900.

The real cool thing here, is that you can still use your N900 while the computer has booted off of your N900. So you can still make phone calls or surf the net with it.

Now you may be asking yourself, “Why would I want to do this?”. I ran through a couple scenarios in my head, the first, is if you only have one USB drive that is currently in use running, say L0phtcrack on one workstation, but you want to multitask and still explore the network further. Well you have your handy and now bootable N900. Lastly, it seems as if most computers (from my experience) don’t have a MicroSD card slot but have USB ports.

Finally, I naturally tried BackTrack 4, but it would not boot and it would shove me to a busybox shell. I didn’t feel like dealing with finding a fix at the time, so I thought I would find a different distro.

If I do more interesting and original things with my N900, I will post more.

As usual more to come…