From ebdde675e9a7ade3ed3f487e2b930fb83aed3014 Mon Sep 17 00:00:00 2001
From: derv82 <derv82@gmail.com>
Date: Sun, 11 Jun 2017 17:48:19 -0400
Subject: [PATCH] Filter multicast/broadcast BSSIDs from appearing in target
 list

Should resolve #32
---
 py/Airodump.py | 15 +++++----------
 py/Target.py   | 23 +++++++++++++++++++++--
 2 files changed, 26 insertions(+), 12 deletions(-)

diff --git a/py/Airodump.py b/py/Airodump.py
index 147bfef..3860c25 100644
--- a/py/Airodump.py
+++ b/py/Airodump.py
@@ -211,17 +211,12 @@ class Airodump(object):
 
                 else:
                     # The current row corresponds to a "Target" (router)
-                    target = Target(row)
+                    try:
+                        target = Target(row)
+                        targets.append(target)
+                    except Exception:
+                        continue
 
-                    if target.essid_len == 0:
-                        # Ignore empty/blank ESSIDs
-                        pass
-
-                    if target.channel == "-1":
-                        # Ignore -1 channel
-                        pass
-
-                    targets.append(target)
         return targets
 
     @staticmethod
diff --git a/py/Target.py b/py/Target.py
index b743d3e..1e3b0d0 100644
--- a/py/Target.py
+++ b/py/Target.py
@@ -3,6 +3,8 @@
 
 from Color import Color
 
+import re
+
 class Target(object):
     '''
         Holds details for a "Target" aka Access Point (e.g. router).
@@ -49,8 +51,8 @@ class Target(object):
         self.ivs        = int(fields[10].strip())
 
         self.essid_known = True
-        self.essid_len  = int(fields[12].strip())
-        self.essid      =     fields[13].strip()
+        self.essid_len   = int(fields[12].strip())
+        self.essid       =     fields[13].strip()
         if self.essid == '\\x00' * self.essid_len or self.essid.strip() == '':
             # Don't display "\x00..." for hidden ESSIDs
             self.essid = None # '(%s)' % self.bssid
@@ -60,6 +62,23 @@ class Target(object):
 
         self.clients = []
 
+        self.validate()
+
+    def validate(self):
+        ''' Checks that the target is valid. '''
+        if self.essid_len == 0:
+            raise Exception("Ignoring target with empty/blank ESSID (length: 0)")
+        elif self.channel == "-1":
+            raise Exception("Ignoring target with Negative-One (-1) channel")
+
+        # Filter broadcast/multicast BSSIDs, see https://github.com/derv82/wifite2/issues/32
+        bssid_broadcast = re.compile(r"^(ff:ff:ff:ff:ff:ff|00:00:00:00:00:00)$")
+        if bssid_broadcast.match(self.bssid):
+            raise Exception("Ignoring target with Broadcast BSSID (%s)" % self.bssid)
+
+        bssid_multicast = re.compile(r"^(01:00:5e|01:80:c2|33:33)")
+        if bssid_multicast.match(self.bssid):
+            raise Exception("Ignoring target with Multicast BSSID (%s)" % self.bssid)
 
     def __str__(self):
         '''