2.1.8: Check hashcat tools before trying PMKID attack.

Should resolve #124.

Also, capturing PMKID will skip WPA handshake capture.

wifite/attack/all.py

@@ -55,8 +55,8 @@ class AttackAll(object):
         for attack in attacks:
             try:
                 result = attack.run()
-                if result and attack.success:
-                    break  # We cracked it.
+                if result:
+                    break  # Attack was successful, stop other attacks.
             except Exception as e:
                 Color.pl("\n{!} {R}Error: {O}%s" % str(e))
                 if Configuration.verbose > 0 or Configuration.print_stack_traces:

wifite/attack/pmkid.py

@@ -55,7 +55,17 @@ class AttackPMKID(Attack):
 
 
     def run(self):
-        # TODO: Check ./hs/ for previously-captured PMKID, skip to crack if found.
+        # TODO: Check that we have all hashcat programs
+        dependencies = [
+            Hashcat.dependency_name,
+            HcxDumpTool.dependency_name,
+            HcxPcapTool.dependency_name
+        ]
+        missing_deps = [dep for dep in dependencies if not Process.exists(dep)]
+        if len(missing_deps) > 0:
+            Color.pl('{!} Skipping PMKID attack, missing required tools: {O}%s{W}' % ', '.join(missing_deps))
+            return False
+
         pmkid_file = None
 
         # Load exisitng has from filesystem
@@ -74,7 +84,8 @@ class AttackPMKID(Attack):
 
         # Crack it.
         self.success = self.crack_pmkid_file(pmkid_file)
-        return self.success
+
+        return True  # Even if we don't crack it, capturing a PMKID is "successful"
 
 
     def capture_pmkid(self):

wifite/attack/wpa.py

@@ -250,7 +250,10 @@ class AttackWPA(Attack):
             os.mkdir(Configuration.wpa_handshake_dir)
 
         # Generate filesystem-safe filename from bssid, essid and date
-        essid_safe = re.sub('[^a-zA-Z0-9]', '', handshake.essid)
+        if handshake.essid and type(handshake.essid) is str:
+            essid_safe = re.sub('[^a-zA-Z0-9]', '', handshake.essid)
+        else:
+            essid_safe = 'UnknownEssid'
         bssid_safe = handshake.bssid.replace(':', '-')
         date = time.strftime('%Y-%m-%dT%H-%M-%S')
         cap_filename = 'handshake_%s_%s_%s.cap' % (essid_safe, bssid_safe, date)