A BLE scanner for "smart" devices hacking based on the bluepy library, dead easy to use because retarded devices should be dead easy to hack. Explanatory post and screenshots can be found here.

How to Install
Install bluepy from source:

git clone https://github.com/IanHarvey/bluepy.git
cd bluepy
python setup.py build
sudo python setup.py install

Then install bleah:

git clone https://github.com/evilsocket/bleah.git
cd bleah
python setup.py build
sudo python setup.py install

Usage
From the -h help menu:

usage: bleah [-h] [-i HCI] [-t TIMEOUT] [-s SENSITIVITY] [-b MAC] [-f] [-e] [-u UUID] [-d DATA] [-r DATAFILE]

optional arguments:
  -h, --help            show this help message and exit
  -i HCI, --hci HCI     HCI device index.
  -t TIMEOUT, --timeout TIMEOUT
                        Scan delay, 0 for continuous scanning.
  -s SENSITIVITY, --sensitivity SENSITIVITY
                        dBm threshold.
  -b MAC, --mac MAC     Filter by device address.
  -f, --force           Try to connect even if the device doesn't allow to.
  -e, --enumerate       Connect to available devices and perform services
                        enumeration.
  -u UUID, --uuid UUID  Write data to this characteristic UUID (requires --mac
                        and --data).
  -d DATA, --data DATA  Data to be written.
  -r DATAFILE, --datafile DATAFILE
                        Read data to be written from this file.

Examples
Keep scanning for BTLE devices:

sudo bleah -t0

Connect to a specific device and enumerate all the things:

sudo bleah -b "aa:bb:cc:dd:ee:ff" -e

Write the bytes hello world to a specific characteristic of the device:

sudo bleah -b "aa:bb:cc:dd:ee:ff" -u "c7d25540-31dd-11e2-81c1-0800200c9a66" -d "hello world"