--crack supports hashcat, aircrack, john, cowpatty, and pyrit.

* Still not "print" option for --crack.
* Checks hashcat for devices, uses --force if no devices are found.
* Interrupting --crack stops entire process, not just a single crack attempt
* Changed wordlist location, hopefully completes #102.

wifite/tools/cowpatty.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from .dependency import Dependency
+from ..config import Configuration
+from ..util.color import Color
+from ..util.process import Process
+from ..tools.hashcat import HcxPcapTool
+
+import os
+import re
+
+
+class Cowpatty(Dependency):
+    ''' Wrapper for Cowpatty program. '''
+    dependency_required = False
+    dependency_name = 'cowpatty'
+    dependency_url = 'https://tools.kali.org/wireless-attacks/cowpatty'
+
+
+    @staticmethod
+    def crack_handshake(handshake, show_command=False):
+        # Crack john file
+        command = [
+            'cowpatty',
+            '-f', Configuration.wordlist,
+            '-r', handshake.capfile,
+            '-s', handshake.essid
+        ]
+        if show_command:
+            Color.pl('{+} {D}{C}Running %s{W}' % ' '.join(command))
+        process = Process(command)
+        stdout, stderr = process.get_output()
+
+        key = None
+        for line in stdout.split('\n'):
+            if 'The PSK is "' in line:
+                key = line.split('"', 1)[1][:-2]
+                break
+
+        return key