[802.11] Wireless Jamming

Ok. Infodox BRIEFLY touched upon 802.11 jamming in his talk at CampusCon (their site seems to be down at the moment).

For those interested, the talk can be downloaded here: Insecurety Research

Anyways, onward to "The Good Stuff". I (x41) am simply posting the parts he wrote so far, and when he comes back he says he will finish the job.

Wireless Jamming. Sometimes one wants to disable all 802.11 stuff within range (i.e. WiFi) for some reason (perhaps deauth everyone so a KARMA style attack will work better?) and often this can be a bit of a challenge.

Challenge accepted.

First off, let's get to grips with some software called "mdk3".

MDK3 is a 802.11 flooding tool, and comes preinstalled on BackTrack and several other Pentest distros.

However, let's assume you are running a standard Ubuntu box and have not got it installed... So start by installing aircrack.

apt-get install aircrack-ng (ubuntu)
yum install aircrack-ng (fedora)
...Or, compile from sauce...
http://www.aircrack-ng.org/

Now. MDK3.

http://homepages.tu-darmstadt.de/~p_larbig/wlan/

Grab the source from here, untar, ./configure, make && make install (as root).

Then to run (as root):

PUT CARD INTO MONITOR MODE BEFORE CONTINUING!
sudo airmon-ng start wlan0 (where wlan0 is your wifi card)

mdk3 (arguements)

Some samples... (assumes mon0 is your monitor mode interface)

1. mdk3 mon0 x 1 -c (target client MAC) -t (target AP MAC)
This one simply deauths the victim client. Good for targetted jamming.

2. mdk3 mon0 d -b /root/blacklist
assuming you have a list of MAC addresses you DONT wish to have online, you put em in a list and blacklist em. This jams them.

3. mdk3 mon0" d -w (and the path to your whitelist file)
This kills everyones WiFi EXCEPT the devices in the whitelist.

Now. On to more fun things... Killing AP's.

Introducing "ap fucker".

AP Fucker is a python script that automates these DoS attacks. My preferred mode is "Destruction Mode". For obvious reasons.

Grab AP fucker here.. ApFucker - Pastebin

Running this is very simple. Just sudo bash (must be root), start the interface in monitor mode, and run it.

More to come - this was just an introduction!

802.11 Race Condition Exploitation

802.11 Race Condition Exploitation

This post is about the Race Condition Exploitation method for "hijacking" WiFi clients.

Basically how it works is, the client sends a GET request for whatever. You respond with a 301 redirect to your content.

How you do this is by sniffing the traffic, and when you see a GET you inject a 301 to the client and a FIN or RST to the AP. You essentially pretend to be the access point for a second.

SO far there are several variants out there, including a Metasploit module. It can be found in auxiliary/spoof/wifi/airpwn

The technique was originally demoed by "toast" at DEFCON 12, and used to replace images with shock porn like Goatse or Tubgirl.

Some links of interest...

http://evilscheme.org/defcon/
http://airpwn.sourceforge.net/Airpwn.html
http://sourceforge.net/projects/airpwn/
http://securitysumo.wordpress.com/2008/04/22/running-airpwn/

Aaaaand some video...

So naturally, I wondered. I can inject images and javascript... So what about executables? (you see where I am going...)

Then I found someone else was doing this exact thing with updates. Hijacking them ala airpwn. Their tool is named "IPPON", and is very interesting, albeit buggy as fuck. If you can make it work, please god message me!

Here be their presentation from DEFCON 17, and their code!
http://www.slideshare.net/itzikk/ippondefcon17
http://code.google.com/p/ippon-mitm/

Now on to the best of the bunch (IMO). RCX. Developed by Melchi Salins, it allows you to do *anything*, is written in Python using SCAPY, and generally is fucking BADASS! With it, you can redirect ANYTHING to ANYTHING.

http://rcx.sourceforge.net/rcx.html

Coming Soon... The RCX config file for mass update hijacking!

##

Ok. Comments were asking for how to install AirPwn in Ubuntu 10.04/Back Track 5.

Here is how it is SUGGESTED to do it...

http://www.timashley.me/node/718


Now I found the second part of that (install lorcon + airpwn) did not work for me. So... I did things a bit differently.

Check out this LaunchPad: https://launchpad.net/~nagos/+archive/ppa?field.series_filter= 

Now, I simply grabbed the .deb files for Airpwn and Liblorcon from there.
Install Liblorcon FIRST. Then Airpwn.

However, this PPA should work fine also: ppa:nagos/ppa

It just didn't work for me :P