PEP8 in diff files

Add concept of non default timeout for copying SMB files. This is by default 5 minutes.
Changed behavior of SMB exploiter if file already exists, we don't assume exploitation is useless and try again. Worse case is we run the monkey after it finished running.
Changed behavior if managed to connect to machine to IPC$ over some dialect. If Success, we don't try again.

chaos_monkey/config.py

@@ -206,6 +206,9 @@ class Configuration(object):
     # rdp exploiter
     rdp_use_vbs_download = True
 
+    # smb/wmi exploiter
+    smb_download_timeout = 300 # timeout in seconds
+
     # system info collection
     collect_system_info = True
 

chaos_monkey/example.conf

@@ -65,6 +65,7 @@
     "psexec_user": "Administrator",
     "range_size": 30,
     "rdp_use_vbs_download": true,
+    "smb_download_timeout": 300,
     "retry_failed_explotation": true,
     "scanner_class": "TcpScanner",
     "self_delete_in_cleanup": true,

chaos_monkey/exploit/__init__.py

@@ -2,6 +2,7 @@ from abc import ABCMeta, abstractmethod
 
 __author__ = 'itamar'
 
+
 class HostExploiter(object):
     __metaclass__ = ABCMeta
     _target_os_type = []

chaos_monkey/exploit/smbexec.py

@@ -79,7 +79,8 @@ class SmbExploiter(HostExploiter):
                                                       self._config.psexec_user,
                                                       password,
                                                       src_path,
-                                                      self._config.dropper_target_path)
+                                                      self._config.dropper_target_path,
+                                                      self._config.smb_download_timeout)
 
                 if remote_full_path is not None:
                     LOG.debug("Successfully logged in %r using SMB (%s : %s)",
@@ -131,6 +132,7 @@ class SmbExploiter(HostExploiter):
                 return False
 
             smb_conn = rpctransport.get_smb_connection()
+            break
 
         # We don't wanna deal with timeouts from now on.
         smb_conn.setTimeout(100000)

chaos_monkey/exploit/tools.py

@@ -22,6 +22,7 @@ from impacket.dcerpc.v5.dtypes import NULL
 class DceRpcException(Exception):
     pass
 
+
 __author__ = 'itamar'
 
 LOG = logging.getLogger(__name__)
@@ -111,7 +112,6 @@ class WmiTools(object):
             DCOMConnection.PINGTIMER.join()
             DCOMConnection.PINGTIMER = None
 
-
     @staticmethod
     def get_object(wmi_connection, object_name):
         assert isinstance(wmi_connection, WmiTools.WmiConnection)
@@ -132,7 +132,7 @@ class WmiTools(object):
         wql_query = "SELECT %s FROM %s" % (fields_query, object_name)
 
         if where:
-            wql_query += " WHERE %s" % (where, )
+            wql_query += " WHERE %s" % (where,)
 
         LOG.debug("Execution WQL query: %r", wql_query)
 
@@ -166,13 +166,13 @@ class WmiTools(object):
 
 class SmbTools(object):
     @staticmethod
-    def copy_file(host, username, password, src_path, dst_path):
+    def copy_file(host, username, password, src_path, dst_path, timeout=60):
-        assert monkeyfs.isfile(src_path), "Source file to copy (%s) is missing" % (src_path, )
+        assert monkeyfs.isfile(src_path), "Source file to copy (%s) is missing" % (src_path,)
 
         config = __import__('config').WormConfiguration
         src_file_size = monkeyfs.getsize(src_path)
 
-        smb, dialect = SmbTools.new_smb_connection(host, username, password)
+        smb, dialect = SmbTools.new_smb_connection(host, username, password, timeout)
         if not smb:
             return None
 
@@ -183,7 +183,8 @@ class SmbTools(object):
 
             try:
                 smb.logoff()
-            except: pass
+            except:
+                pass
 
             return None
 
@@ -236,9 +237,9 @@ class SmbTools(object):
                           'share_path': share_path}
 
             if dst_path.lower().startswith(share_path.lower()):
-                high_priority_shares += ((ntpath.sep + dst_path[len(share_path):], share_info), )
+                high_priority_shares += ((ntpath.sep + dst_path[len(share_path):], share_info),)
 
-            low_priority_shares += ((ntpath.sep + file_name, share_info), )
+            low_priority_shares += ((ntpath.sep + file_name, share_info),)
 
         shares = high_priority_shares + low_priority_shares
 
@@ -248,7 +249,7 @@ class SmbTools(object):
             share_path = share['share_path']
 
             if not smb:
-                smb, _ = SmbTools.new_smb_connection(host, username, password)
+                smb, _ = SmbTools.new_smb_connection(host, username, password, timeout)
                 if not smb:
                     return None
 
@@ -271,7 +272,7 @@ class SmbTools(object):
                     if file_info:
                         if src_file_size == file_info[0].get_filesize():
                             LOG.debug("Remote monkey file is same as source, skipping copy")
-                            return None
+                            return remote_full_path
 
                         LOG.debug("Remote monkey file is found but different, moving along with attack")
                 except:
@@ -279,6 +280,8 @@ class SmbTools(object):
 
             try:
                 with monkeyfs.open(src_path, 'rb') as source_file:
+                    # make sure of the timeout
+                    smb.setTimeout(timeout)
                     smb.putFile(share_name, remote_path, source_file.read)
 
                 file_uploaded = True
@@ -308,7 +311,7 @@ class SmbTools(object):
         return remote_full_path
 
     @staticmethod
-    def new_smb_connection(host, username, password):
+    def new_smb_connection(host, username, password, timeout=60):
         try:
             smb = SMBConnection(host.ip_addr, host.ip_addr, sess_port=445)
         except Exception, exc:
@@ -334,6 +337,7 @@ class SmbTools(object):
                       host, username, password, exc)
             return None, dialect
 
+        smb.setTimeout(timeout)
         return smb, dialect
 
     @staticmethod
@@ -341,7 +345,7 @@ class SmbTools(object):
         dce = SmbTools.get_dce_bind(smb)
         rpc_method_wrapper = getattr(srvs, rpc_func, None)
         if not rpc_method_wrapper:
-            raise ValueError("Cannot find RPC method '%s'" % (rpc_method_wrapper, ))
+            raise ValueError("Cannot find RPC method '%s'" % (rpc_method_wrapper,))
 
         return rpc_method_wrapper(dce, *args)
 
@@ -396,7 +400,7 @@ def get_target_monkey(host):
     if not monkey_path:
         if host.os.get('type') == platform.system().lower():
             # if exe not found, and we have the same arch or arch is unknown and we are 32bit, use our exe
-            if (not host.os.get('machine') and sys.maxsize < 2**32) or \
+            if (not host.os.get('machine') and sys.maxsize < 2 ** 32) or \
                             host.os.get('machine', '').lower() == platform.machine().lower():
                 monkey_path = sys.executable
 
@@ -425,5 +429,4 @@ def report_failed_login(exploiter, machine, user, password):
     from control import ControlClient
     ControlClient.send_telemetry('exploit', {'result': False, 'machine': machine.__dict__,
                                              'exploiter': exploiter.__class__.__name__,
-                                             'user':user,'password':password})
+                                             'user': user, 'password': password})
-

chaos_monkey/exploit/wmiexec.py

@@ -81,7 +81,8 @@ class WmiExploiter(HostExploiter):
                                                   self._config.psexec_user,
                                                   password,
                                                   src_path,
-                                                  self._config.dropper_target_path)
+                                                  self._config.dropper_target_path,
+                                                  self._config.smb_download_timeout)
 
             if not remote_full_path:
                 wmi_connection.close()