airba.sh

Airbash is a fully automated WPA PSK handshake capture script aimed at penetration testing. It is compatible with Bash and Android Shell (CM 10.2) and uses aircrack-ng to scan for clients that are currently connected to access points (AP). Those clients are then deauthenticated in order to capture the handshake when attempting to reconnect to the AP. Verification of a captured handshake is done using aircrack-ng. If one or more handshakes are captured, they are entered into an SQLite3 database, along with the time of capture and current GPS data (if properly configured).

After capture, the database can be tested for vulnerable router models using crackdefault.sh. It will search for entries that match the implemented modules, which currently include algorithms to compute default keys for Speedport 500-700 series, Thomson/SpeedTouch and UPC 7 digits (UPC1234567) routers.

Requirements

WiFi interface in monitor mode aircrack-ng SQLite3 openssl for compilation of modules (optional)

In order to log GPS coordinates of handshakes, configure your coordinate logging software to log to .loc/*.txt (the filename can be chosen as desired.) Airbash will always use the first line of the output of cat "$path$loc"*.txt 2>/dev/null | awk 'NR==0; END{print}', which equals to reading all .txt files in .loc/ and picking the first line. The reason for this way of implementation is the functionality of GPSLogger, which was used on the development device.

Calculating default keys

After capturing a new handshake, the database can be queried for vulnerable router models. If a module applies, the default keys for this router series are calculated and used as input for aircrack-ng to try and recover the passphrase.

Compiling Modules

The modules for calculating Thomson/SpeedTouch and UPC1234567 (7 random digits) default keys are included in modules/

Credits for the code go to the authors Kevin Devine and peter@haxx.in.

On Linux:
gcc -fomit-frame-pointer -O3 -funroll-all-loops -o modules/st modules/stkeys.c -lcrypto
gcc -O2 -o modules/upckeys modules/upc_keys.c -lcrypto

If on Android, you may need to copy the binaries to /system/xbin/ or to another directory where binary execution is allowed.

Usage

When running Airbash for the first time, running install.sh will create the database. ./airba.sh starts the script, automatically scanning and attacking targets that are not found in the database. ./crackdefault.sh attempts to break known default key algorithms.

Output

_n: number of access points found

__c/m: represents client number and maximum number of clients found, respectively

-: access point is blacklisted

x: access point already in database

?: access point out of range (not visible to airodump anymore)

The Database

The database contains a table called hs with seven columns.

id: incrementing counter of table entries

lat and lon: GPS coordinates of the handshake (if available)

bssid: MAC address of the access point

essid: Name identifier

psk: WPA Passphrase, if known

prcsd: Flag that gets set by crackdefault.sh to prevent duplicate calculation of default keys if a custom passphrase was used.

Currently, the SQLite3 database is not password-protected.