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[Wireless] GrimWepa WEP and WPA Password Cracker
GRIM WEPA was written in Java and is intended for use with the Linux Operating System (specifically the Backtrack 4,5 distribution).
GrimWepa 1.1 has been translated for Português-Brasil users. It is available in the downloads section.
GRIM WEPA is no longer being supported
GRIM WEPA is on an indefinite hiatus while I work on other projects.
use Wifite instead of GRIM WEPA. Wifite is a newer wifi cracker with
more functionality and stability than GRIM WEPA. Wifite is available
Please update your bookmarks and links accordingly.
This project will remain open so that I may eventually update GrimWepa.
WEPA is a password cracker for both WEP and WPA-encrypted access points
(routers). This program uses the following applications and suites:
aircrack-ng, to crack WPA and WEP;
airodump-ng, to capture packets and find access points;
airmon-ng, to enumerate devices in monitor mode;
aireplay-ng, to forge and replay packets;
and packetforge-ng, to create replay packets.
iwconfig, to see if devices are in monitor mode;
xterm, to show output to user;
ifconfig, to get the MAC address of devices;
macchanger, to change MAC address of wifi cards.
These applications are required for GRIM WEPA to run properly. All of these applications come standard with Backtrack4.
note: the settings & configuration file for Grim Wepa is saved to /etc/grimwepa.conf
WEPA's cracking methods are archaic and have been around for years. It
simply uses the existing cracking methods in aireplay-ng (for WEP) and
aircrack-ng (for WPA). Grim Wepa is similar in style and functionality
to shamanvirtuel's Spoon series (SpoonWEP, SpoonWPA, and SpoonDRV). The
Spoon suite is still available, though it is not kept updated.
Backtrack 4 Linux distribution has a default WEP/WPA cracker, but it
does not work properly for me; also, the Spoon series does not run
properly for me on BT4, so I created GRIM WEPA foforforr myself and as an
homage to shamanvirtuel.
WEPA has only two options: Crack WEP-encrypted access points (routers)
and crack WPA-encrypted access points. The program can search for new
targets, and auto-selects your cracking method. The options for each
method are as follows:
Attacks for WEP-encrypted Access Points
is able to crack just about any WEP password after about 20,000 IV
(Initialization Vector) data packets have been captured. The capture
usually takes about 2 minutes, and the crack another 2-3 minutes.
Attacks for WPA-encrypted Access Points
Basic deauthorization attack to get handshake.
GRIM WEPA includes a 2MB default password list containing approximately 250,000 commonly-used passwords.
/ Dictionary / Brute-force attack: Currently, there is only one
consistent method of cracking WPA, and that is by brute force.
aircrack-ng can crack hundreds of passwords per second, so this method
is not nearly as arbitrary as has been proposed.
To run GRIM WEPA, navigate to the file's location in Terminal and type:
java -jar grimwepa_X.X.jar
at the command line prompt, where X.X is your version of grimwepa.
Installation is not required for GRIM WEPA to run properly, but it is recommended if you use are going to GRIM WEPA frequently.
GrimWepa can be downloaded and installed by running the "grimstall.sh" script.
For Backtrack Users:
To download the install script via wget, change permissions on it, and
run the install script (which will download the latest version of
grimwepa and install it), copy-and-paste the below code into console (as
Change the directory from /pentest/wireless/grimwepa/ to whichever
directory you want to install to ; /pentest/wireless is commonly found
in Backtrack distributions ; all files in the selected directory will be
deleted (a prompt will confirm this); don't forget the / at the end!