Make snmp_bruteforce support snmp v1 (#278)

routersploit/modules/creds/snmp_bruteforce.py

@@ -36,6 +36,7 @@ class Exploit(exploits.Exploit):
 
     target = exploits.Option('', 'Target IP address or file with target:port (file://)')
     port = exploits.Option(161, 'Target port')
+    version = exploits.Option(1, 'Snmp version 0:v1, 1:v2c')
     threads = exploits.Option(8, 'Number of threads')
     snmp = exploits.Option(wordlists.snmp, 'Community string or file with community strings (file://)')
     verbosity = exploits.Option('yes', 'Display authentication attempts')
@@ -78,7 +79,7 @@ class Exploit(exploits.Exploit):
                 string = data.next().strip()
 
                 errorIndication, errorStatus, errorIndex, varBinds = cmdGen.getCmd(
-                    cmdgen.CommunityData(string),
+                    cmdgen.CommunityData(string, mpModel=int(self.version)),
                     cmdgen.UdpTransportTarget((self.target, int(self.port))),
                     '1.3.6.1.2.1.1.1.0',
                 )