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amun_server.py
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amun_server.py
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#!/usr/bin/env python
"""
[Amun - low interaction honeypot]
Copyright (C) [2014] [Jan Goebel]
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, see <http://www.gnu.org/licenses/>
"""
__author__ = "jan goebel <goebel@pi-one.net>"
__version__ = "0.2.3-devel"
try:
import psyco ; psyco.full()
from psyco.classes import *
except ImportError:
pass
import asynchat
import asyncore
import sys
import socket
import traceback
import StringIO
import time
import select
import logging
import logging.handlers
import gc
import os
import re
import optparse
import subprocess
import hashlib
""" NOTICE: local imports at the bottom """
class amunServer(asynchat.async_chat):
def __init__(self, address, type, currentSockets, decodersDict, event_dict, vuln_modules, divLogger, config_dict):
"""Amun honeypot network server class initialization
Keyword arguments:
address -- tuple containing IP address and network port the server should listen on
type -- protocol the server uses (tcp or udp)
currentSockets -- list of currently open sockets
decodersDict -- dictionary of shellcode decoding routines
event_dict -- dictionary to store certain events (e.g. download events, exploit events, ...)
vuln_modules -- list of loaded vulnerability modules
divLogger -- dictionary of logging instances
config_dict -- dictionary of configuration options
"""
asynchat.async_chat.__init__(self)
self.address = address
self.divLogger = divLogger
self.log_obj = amun_logging.amun_logging("amun_server", divLogger['amunServer'])
self.decodersDict = decodersDict
self.currentSockets = currentSockets
self.vuln_modules = vuln_modules
self.currentConnections = {}
self.event_dict = event_dict
self.config_dict = config_dict
self.replace_locals = config_dict['replace_locals']
socket.setdefaulttimeout(60.0)
if type=="tcp":
self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
elif type=="udp":
self.create_socket(socket.AF_INET, socket.SOCK_DGRAM)
else:
self.log_obj.log("passed invalid server type", 0, "crit", True, True)
sys.exit(1)
self.set_reuse_addr()
try:
self.bind(self.address)
except socket.error, e:
if int(e[0])==98:
self.log_obj.log("Port already in use: IP: %s Port: %s" % (self.address[0], self.address[1]), 0, "crit", True, True)
else:
print "amun_server socket error:"
print e
raise
except:
print "amun_server bind error:"
print self.address
raise
if type=="tcp":
self.listen(1)
if config_dict['verbose_logging'] == 1:
self.log_obj.log("listening on %s port %s" % (type, address[1]), 0, "debug", False, True)
def handle_accept(self):
### accept connection
try:
### check for too many open sockets
if len(self.currentSockets)>=self.config_dict['max_open_sockets']:
if self.config_dict['verbose_logging'] == 1:
self.log_obj.log("too many open sockets -> dropping request", 0, "debug", False, True)
return
(sock_obj, addr) = self.accept()
### check for blocked ips
try:
time = self.event_dict['refused_connections'][str(addr[0])]
return
except KeyError:
pass
try:
time = self.event_dict['timeout_connections'][str(addr[0])]
return
except KeyError:
pass
try:
time = self.event_dict['sucdown_connections'][str(addr[0])]
return
except KeyError:
pass
try:
time = self.event_dict['sucexpl_connections'][str(addr[0])]
return
except KeyError:
pass
handler = amun_request_handler.amun_reqhandler(self.divLogger).handle_incoming_connection(
sock_obj,
self.currentSockets,
self.currentConnections,
self.decodersDict,
self.event_dict,
self.config_dict,
self.vuln_modules,
self.divLogger,
addr)
except KeyboardInterrupt:
raise
def handle_connect(self):
return
def handle_read(self):
### udp connections come in here
### directly send to shellcodemanager
shellcode_manager = shellcode_mgr_core.shell_mgr(self.decodersDict, self.divLogger['shellcode'], self.config_dict)
try:
data, address = self.recvfrom(64*1024)
if len(data)>4:
remote_ip = address[0]
remote_port = address[1]
vulnResult = {}
vulnResult['vulnname'] = "UDP"
vulnResult['shellcode'] = data
result = shellcode_manager.start_matching(vulnResult,remote_ip,self.address[0],self.address[1],self.replace_locals,False)
if result['result']:
identifier = "%s%s%s%s" % (remote_ip, remote_port, self.address[0], self.address[1])
### create exploit event
event_item = (remote_ip,
remote_port,
self.address[0],
self.address[1],
'UDP Vulnerability',
int(time.time()),
result)
if not identifier in self.event_dict['exploit']:
self.event_dict['exploit'][identifier] = event_item
### attach to download events
if not identifier in self.event_dict['download']:
self.event_dict['download'][identifier] = result
else:
self.log_obj.log("received unknown UDP request", 0, "debug", True, True)
else:
self.log_obj.log("UDP size too small", 0, "debug", True, True)
except StandardError as e:
self.log_obj.log("error in UDP handle_read: %s" % (e), 0, "crit", True, True)
def writable(self):
return False
def readable(self):
return True
def handle_error(self):
self.log_obj.log("handle_error", 0, "crit", True, True)
f = StringIO.StringIO()
traceback.print_exc(file=f)
self.log_obj.log(f.getvalue(), 0, "crit", True, True)
self.close()
raise
def log(message, tabs=0, type="normal", Logger=None, display=True):
try:
empty = ""
for i in xrange(0, tabs):
empty += " "
if display:
if type=="debug":
print "\033[0;34m%s.::[Amun - Main] %s ::.\033[0m" % (empty, message)
elif type=="warn":
print "\033[0;33m%s.::[Amun - Main] %s ::.\033[0m" % (empty, message)
elif type=="info":
print "\033[0;32m%s.::[Amun - Main] %s ::.\033[0m" % (empty, message)
elif type=="crit":
print "\033[0;31m%s.::[Amun - Main] %s ::.\033[0m" % (empty, message)
elif type=="fade":
print "\033[0;37m%s.::[Amun - Main] %s ::.\033[0m" % (empty, message)
elif type=="div":
print "\033[0;36m%s.::[Amun - Main] %s ::.\033[0m" % (empty, message)
else:
print "\033[0m%s.::[Amun - Main] %s ::.\033[0m" % (empty, message)
if Logger:
Logger.info(message)
except KeyboardInterrupt:
raise
def check_idle_connections(currentSockets, connection_timeout, event_dict, serverLogger, config_dict):
### check idle connections
try:
conn_keys = currentSockets.keys()
for key in conn_keys:
current_time = int(time.time())
conn_time = currentSockets[key][0]
difference = current_time - conn_time
if difference >= connection_timeout:
try:
(attIP, attPort) = currentSockets[key][1].getpeername()
if config_dict['block_timeout']==1:
block_item = str(attIP)
event_dict['timeout_connections'][block_item] = int(time.time())
currentSockets[key][1].shutdown(socket.SHUT_RDWR)
if config_dict['verbose_logging'] == 1:
log("sending shutdown to idle connection (idle: %s IP: %s)" % (difference, attIP), 9, "debug", serverLogger, True)
if key in event_dict['initial_connections']:
del event_dict['initial_connections'][key]
except socket.error, e:
if e[0]==9:
log("shutdown non-existant socket", 9, "crit", None, False)
elif e[0]==107:
log("transport endpoint is not connected", 9, "crit", None, False)
else:
log("shutdown socket error: %s (%s)" % (e, len(conn_keys)), 9, "crit", serverLogger, True)
if key in currentSockets:
del currentSockets[key]
if key in event_dict['initial_connections']:
del event_dict['initial_connections'][key]
except KeyboardInterrupt:
raise
def check_download_events(event_dict, config_dict, currentDownloads, bindports, tftp_downloads, divLogger, currentSockets, ftp_downloads, decodersDict):
### check for download events
try:
downl_keys = event_dict['download'].keys()
for key in downl_keys:
### get download item
item = event_dict['download'][key]
if item['dlident'] == "None":
log("item is missing identifier: %s" % (item), 0, "crit", divLogger['unknownDownload'], True)
### delete download item from dictionary
del event_dict['download'][key]
### check if the item is already being downloaded
if item['dlident'] in currentDownloads:
continue
### check for local ip address
if item['isLocalIP']:
if config_dict['log_local_downloads']:
log("item with localIP, skipping download: %s" % (item), 0, "info", divLogger['unknownDownload'], False)
continue
### find the right download protocol
if item['found']=="httpurl":
### HTTP Downloads
currentDownloads[item['dlident']] = int(time.time())
d = download_core.download_http(item, currentDownloads, event_dict, config_dict, currentSockets, divLogger['download'])
elif item['found']=="bindport":
### BindPort
currentDownloads[item['dlident']] = int(time.time())
d = amun_bindport_core.bindPort(item, currentDownloads, bindports, event_dict, divLogger, config_dict, currentSockets, decodersDict)
elif item['found']=="connectbackfiletrans":
### ConnectBack Filetransfer
currentDownloads[item['dlident']] = int(time.time())
d = download_core.download_connectback(item, currentDownloads, currentSockets, divLogger, event_dict, config_dict, False, item['passwort'], decodersDict)
elif item['found']=="connbackshell":
### ConnectBack Shell
currentDownloads[item['dlident']] = int(time.time())
d = download_core.download_connectback(item, currentDownloads, currentSockets, divLogger, event_dict, config_dict, True, "None", decodersDict)
elif item['found']=="tftp":
### TFTP Downloads
currentDownloads[item['dlident']] = int(time.time())
d = tftp_download_core.tftp(item, currentDownloads, tftp_downloads, event_dict, divLogger['download'], config_dict)
elif item['found']=="ftp":
### FTP Downloads
currentDownloads[item['dlident']] = int(time.time())
d = ftp_download_core.download_ftp(item, currentDownloads, event_dict, config_dict, ftp_downloads, divLogger['download'], currentSockets)
elif item['found']=='mydoom':
continue
elif item['found']=='directfile':
continue
else:
### Unknown Download Event
log("unknown item: %s" % (item), 0, "info", divLogger['unknownDownload'], False)
d = False
del d
except KeyboardInterrupt:
raise
def generic_check_unblock_ips(event_dict, event_key, block_time, logger, verbose_logging):
"""Check if currently blocked IP addresses can be unblocked again
Keyword arguments:
event_dict -- dictionary to store certain events (e.g. download events, exploit events, ...)
event_key -- key in the event dictionary which kind of blocked IP addresses should be checked
block_time -- configured time in seconds that IP addresses should be blocked
logger -- logging instance to use for logs
verbose_logging -- enable/disable verbose output
"""
try:
allkeys = event_dict[event_key].keys()
for key in allkeys:
logged_time = event_dict[event_key][key]
current_time = int(time.time())
difference = current_time - int(logged_time)
if difference >= block_time:
del event_dict[event_key][key]
if verbose_logging==1:
log("removing blocked IP %s (blocktime: %s, list: %s)" % (key, difference, event_key), 0, "debug", logger, True)
except KeyboardInterrupt:
raise
def check_for_initial_connection_event(event_dict, exLogger, log_modules, loLogger, currentSockets, serverLogger, verbose_logging):
### check for initial connection events
try:
init_keys = event_dict['initial_connections'].keys()
for key in init_keys:
item = event_dict['initial_connections'][key]
if item[5] == 1:
currentTime = int(time.time())
difference = currentTime - item[6]
### TODO: timeout in config
if difference>300:
del item
del event_dict['initial_connections'][key]
if verbose_logging==1:
log("removing initial connection entry (waittime: %s)" % (difference), 0, "debug", serverLogger, True)
continue
### item[0] => attackerIP
### item[1] => attackerPort
### item[2] => victimIP
### item[3] => victimPort
### item[4] => attackerID storage place
### item[5] => integer if checked or not
[module.initialConnection(item[0], item[1], item[2], item[3], key, event_dict['initial_connections'], loLogger) for module in log_modules]
event_dict['initial_connections'][key][5] = 1
except KeyboardInterrupt:
raise
def check_for_exploit_event(event_dict, exLogger, log_modules, loLogger):
### check for exploit events
try:
expl_keys = event_dict['exploit'].keys()
for key in expl_keys:
item = event_dict['exploit'][key]
del event_dict['exploit'][key]
### item[0] => Attacker IP
### item[1] => Attacker Port
### item[2] => Victim IP
### item[3] => Victim Port
### item[4] => Vulnerability Name
### item[5] => Timestamp
### item[6]['found'] => Download Method
### item[6]['displayURL'] => Download URL
### item[6]['shellcodeName'] => Sellcode Name
log("exploit %s:%s -> %s:%s (%s: %s) (Shellcode: %s)" % (item[0],item[1],item[2],item[3],item[4],item[6]['displayURL'],item[6]['shellcodeName']), 0, "normal", exLogger, False)
### generate identifier to get attackID
identifier = "%s%s%s%s" % (item[0],item[1],item[2],item[3])
if identifier in event_dict['initial_connections']:
attackerID = event_dict['initial_connections'][identifier][4]
del event_dict['initial_connections'][identifier]
else:
attackerID = None
### iterate over logging modules
[module.incoming(item[0],item[1],item[2],item[3],item[4],item[5],item[6]['displayURL'], loLogger, attackerID, item[6]['shellcodeName']) for module in log_modules]
except KeyboardInterrupt:
raise
def check_for_succ_download_event(event_dict, suLogger, submit_modules, smLogger, block_sucdown, lastBinaries, log_modules, loLogger):
### check for successfull download events
try:
dwl_keys = event_dict['successfull_downloads'].keys()
for key in dwl_keys:
item = event_dict['successfull_downloads'][key]
### item[0] => data length
### item[1] => attacker IP
### item[2] => attacker Port
### item[3] => victim IP
### item[4] => download method
### item[5] => binary data
### item[6] => vulnerability name
### item[7] => download URL
del event_dict['successfull_downloads'][key]
data = item[5]
data_len = item[0]
### check file header for misc bytes
if data_len >= 5:
(data, data_len) = check_file(data, data_len, suLogger)
hash = hashlib.md5(data)
fname = hash.hexdigest()
### check if file is already stored
fexists = False
if lastBinaries.contains(fname):
fexists = True
else:
check_filename = "malware/md5sum/%s.bin" % (fname)
if os.path.exists(check_filename):
fexists = True
lastBinaries.insert(fname)
### check for error download
if not fexists and data_len<=50:
errorResult = check_file_for_error(data, data_len, suLogger)
if errorResult:
continue
### log download event
log("download (%s): %s (size: %i) - %s:%i - %s" % (item[7], fname, data_len, item[1], item[2], item[6].replace(' Vulnerability','')), 0, "normal", suLogger, False)
### block hosts with successfull download for some time
if block_sucdown == 1:
block_item = str(item[1])
event_dict['sucdown_connections'][block_item] = int(time.time())
### DIRTY FIX FOR INVALID LINKBOT DOWNLOAD
if int(data_len)==380:
log("download skipped due to invalid size (linkbot fix)", 0, "normal", suLogger, False)
continue
### iterate over log modules that also log submission
[module.successfullSubmission(item[1], item[2], item[3], item[7], fname, data, data_len, item[4], loLogger, item[6], fexists) for module in log_modules]
### iterate over submission modules
[module.incoming(data, data_len, item[4], item[1], item[3], smLogger, fname, item[2], item[6], item[7], fexists) for module in submit_modules]
except KeyboardInterrupt:
raise
def check_file_for_error(data, data_len, suLogger):
try:
### compile regular expressions
fileDirnotfoundExpre = re.compile("\\x4e\\x6f\\x20\\x73\\x75\\x63\\x68\\x20\\x66\\x69\\x6c\\x65\\x20\\x6f\\x72\\x20\\x64\\x69\\x72\\x65\\x63\\x74\\x6f\\x72\\x79", re.S)
filenotfoundExpre = re.compile("\\x46\\x69\\x6c\\x65\\x20\\x4e\\x6f\\x74\\x20\\x46\\x6f\\x75\\x6e\\x64", re.S)
filenotfoundExpre2 = re.compile("\\x46\\x69\\x6c\\x65\\x20\\x6e\\x6f\\x74\\x20\\x66\\x6f\\x75\\x6e\\x64", re.S)
illegalTFTP = re.compile("\\x69\\x6c\\x6c\\x65\\x67\\x61\\x6c\\x20\\x54\\x46\\x54\\x50\\x20\\x6f\\x70\\x65\\x72\\x61\\x74\\x69\\x6f\\x6e\\x2e", re.S)
getNotSupp = re.compile("\\x47\\x65\\x74\\x20\\x6e\\x6f\\x74\\x20\\x73\\x75\\x70\\x70\\x6f\\x72\\x74\\x65\\x64")
### check for matches
match = fileDirnotfoundExpre.search(data)
if match:
log("received: file or directory not found", 0, "debug", suLogger, False)
return True
match = filenotfoundExpre.search(data)
if match:
log("received: file or directory not found", 0, "debug", suLogger, False)
return True
match = filenotfoundExpre2.search(data)
if match:
log("received: file or directory not found", 0, "debug", suLogger, False)
return True
match = illegalTFTP.search(data)
if match:
log("received: illegal tftp operation", 0, "debug", suLogger, False)
return True
match = getNotSupp.search(data)
if match:
log("received: get not supported", 0, "debug", suLogger, False)
return True
return False
except KeyboardInterrupt:
raise
def check_file(data, data_len, suLogger):
### check if misc data is in the beginning of the file
try:
i = 0
found = False
### if it starts with MZ everything is fine
if data[i]=='\x4d' and data[i+1]=='\x5a':
return data, data_len
### otherwise cut leading part
while i <= data_len-4:
if data[i]=='\x4d' and data[i+1]=='\x5a' and data[i+2]=='\x90' and data[i+3]=='\x00' and data[i+4]=='\x03':
found = True
break
elif data[i]=='\x4d' and data[i+1]=='\x5a' and data[i+2]=='\x50' and data[i+3]=='\x00' and data[i+4]=='\x02':
found = True
break
elif data[i]=='\x4d' and data[i+1]=='\x5a' and data[i+2]=='\x4b' and data[i+3]=='\x45' and data[i+4]=='\x52':
found = True
break
elif data[i]=='\x4d' and data[i+1]=='\x5a' and data[i+2]=='\x66' and data[i+3]=='\x61' and data[i+4]=='\x72':
found = True
break
elif data[i]=='\x4d' and data[i+1]=='\x5a' and data[i+2]=='\x00' and data[i+3]=='\x00' and data[i+4]=='\x00':
found = True
break
elif data[i]=='\x4d' and data[i+1]=='\x5a' and data[i+2]=='\x90' and data[i+3]=='\xeb' and data[i+4]=='\x01':
found = True
break
elif data[i]=='\x4d' and data[i+1]=='\x5a' and data[i+2]=='\x4c' and data[i+3]=='\x6f' and data[i+4]=='\x61':
found = True
break
i += 1
if i>0 and found:
if i>5:
log("cutting header (size: %i)" % (i), 0, "crit", suLogger, False)
data = data[i:]
data_len = len(data)
return data, data_len
except KeyboardInterrupt:
raise
def check_idle_bindports(bindports, bind_timeout):
"""Check all open bindports if they can be closed due to timeout
Keyword arguments:
bindports -- dictionary with all currently open bindports
bind_timeout -- configured number of seconds a bindport should be idle before forcefully closed
"""
try:
bindport_keys = bindports.keys()
for key in bindport_keys:
(ip, port, start_time) = bindports[key].split(',')
current_time = int(time.time())
difference = current_time - int(start_time)
if difference >= bind_timeout:
try:
oSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
oSocket.connect( (ip,int(port)) )
oSocket.send('local quit')
oSocket.shutdown(socket.SHUT_RDWR)
oSocket.close()
if key in bindports:
del bindports[key]
except socket.error, e:
if e[0]!=111:
log("bindport close failure: %s" % (e), 0, "crit", None, True)
else:
### connection refused -> port already closed
pass
if key in bindports:
del bindports[key]
except KeyboardInterrupt:
raise
def check_idle_tftp_downloads(tftp_downloads, tftp_timeout):
"""Check all current tftp download if a packet needs to be resend
Keyword arguments:
tftp_downloads -- dictionary of currently active tftp download requests
tftp_timeout -- number of seconds that need to pass until a packet is resend
"""
try:
tftp_keys = tftp_downloads.keys()
for key in tftp_keys:
(port, start_time, ip) = tftp_downloads[key].split(',')
current_time = int(time.time())
difference = current_time - int(start_time)
if difference >= tftp_timeout:
try:
oSocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
oSocket.sendto('resend', (ip, int(port)))
oSocket.close()
except socket.error, e:
log("tftp download close failure: %s" % (e), 0, "crit", None, True)
if key in tftp_downloads:
del tftp_downloads[key]
except KeyboardInterrupt:
raise
def check_idle_ftp_downloads(ftp_downloads, ftp_timeout):
"""Check all current ftp downloads if a connection is idle
Keyword arguments:
ftp_downloads -- dictionary of currently active ftp download requests
ftp_timeout -- configured number of seconds a ftp connection can be idle until closed
"""
try:
ftp_keys = ftp_downloads.keys()
for key in ftp_keys:
(port, start_time, ip) = ftp_downloads[key].split(',')
current_time = int(time.time())
difference = current_time - int(start_time)
if difference >= ftp_timeout:
try:
oSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
oSocket.connect( (ip,int(port)) )
oSocket.send('local quit')
oSocket.close()
if key in ftp_downloads:
del ftp_downloads[key]
except socket.error, e:
if e[0]!=111:
log("ftp download close failure: %s" % (e), 0, "crit", None, True)
else:
### connection refused -> port already closed
pass
if key in ftp_downloads:
del ftp_downloads[key]
except KeyboardInterrupt:
raise
def readVulnModules(config, display=True):
"""Load all configured vulnerability modules and the according network ports
Keyword arguments:
config -- instance of the configuration object
display -- display each module that is loaded
"""
modules = config.getListValues("vuln_modules")
vuln_modules = {}
for module in modules:
mod_name = module.strip()
if display:
log("loading vulnerability modul %s" % (mod_name), 0, "info", None, True)
import_path = "vuln_modules/%s" % (mod_name)
sys.path.append(import_path)
import_name = "%s_modul" % (mod_name.replace('vuln-',''))
import_name = __import__(import_name)
port_list = config.getSingleValue(mod_name).split(',')
for port in port_list:
if port in vuln_modules:
mod_list = vuln_modules[port]
k = len(mod_list)
mod_list[k] = import_name
else:
mod_list = {}
mod_list[0] = import_name
vuln_modules[port] = mod_list
return vuln_modules
def readSubmitModules(config):
modules = config.getListValues("submit_modules")
submit_modules = []
for module in modules:
mod_name = module.strip()
log("loading submission modul %s" % (mod_name), 0, "info", None, True)
import_path = "submit_modules/%s" % (mod_name)
sys.path.append(import_path)
import_name = "submit_%s" % (mod_name.replace('submit-',''))
import_name = __import__(import_name)
submit_modules.append(import_name.submit())
return submit_modules
def readLogModules(config):
modules = config.getListValues("log_modules")
log_modules = []
for module in modules:
mod_name = module.strip()
log("loading logging modul %s" % (mod_name), 0, "info", None, True)
import_path = "log_modules/%s" % (mod_name)
sys.path.append(import_path)
import_name = "log_%s" % (mod_name.replace('log-',''))
import_name = __import__(import_name)
log_modules.append(import_name.log())
return log_modules
def checkServers(serverList, vuln_modules, divLogger, amunServerIPList, currentSockets, decodersDict, event_dict, config_dict, config, connection_timeout):
### iterate over all running tcp servers
current_time = int(time.time())
last_check = int(config_dict['last_check'])
difference = current_time - last_check
if difference>=int(config_dict['check_new_vulns']):
config_dict['last_check'] = int(time.time())
### reload configuration
confreloadResult, errorMess = config.reloadConfig()
if not confreloadResult:
log("failed config reload (%s)" % (errorMess), 0, "crit", divLogger['amunServer'], True)
return serverList,vuln_modules,connection_timeout
### update configuration parameters
config_dict['check_new_vulns'] = int(config.getSingleValue("check_new_vulns"))
config_dict['block_refused'] = int(config.getSingleValue("block_refused"))
config_dict['block_timeout'] = int(config.getSingleValue("block_timeout"))
config_dict['block_sucdown'] = int(config.getSingleValue("block_sucdown"))
config_dict['block_sucexpl'] = int(config.getSingleValue("block_sucexpl"))
config_dict['replace_locals'] = int(config.getSingleValue("replace_local_ip"))
config_dict['store_unfinished_tftp'] = int(config.getSingleValue("store_unfinished_tftp"))
config_dict['check_http_filesize'] = int(config.getSingleValue("check_http_filesize"))
config_dict['tftp_max_retransmissions'] = int(config.getSingleValue("tftp_max_retransmissions"))
config_dict['log_local_downloads'] = int(config.getSingleValue("log_local_downloads"))
config_dict['ftp_port_range'] = config.getSingleValue("ftp_port_range")
ftp_nat_ip = config.getSingleValue("ftp_nat_ip")
if ftp_nat_ip!="None":
ipReg = re.compile("(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})")
match = ipReg.search(ftp_nat_ip)
if not match:
ftp_nat_ip = socket.gethostbyaddr(ftp_nat_ip)[2][0]
config_dict['ftp_nat_ip'] = ftp_nat_ip
config_dict['verbose_logging'] = int(config.getSingleValue("verbose_logging"))
config_dict['max_open_sockets'] = int(config.getSingleValue("max_open_sockets"))
### get some global timeout parameters
config_dict['sucexpl_blocktime'] = int(config.getSingleValue("sucexpl_blocktime"))
config_dict['sucdown_blocktime'] = int(config.getSingleValue("sucdown_blocktime"))
config_dict['timeout_blocktime'] = int(config.getSingleValue("timeout_blocktime"))
config_dict['refused_blocktime'] = int(config.getSingleValue("refused_blocktime"))
config_dict['bindport_timeout'] = int(config.getSingleValue("bindport_timeout"))
config_dict['tftp_retransmissions'] = int(config.getSingleValue("tftp_retransmissions"))
config_dict['ftp_timeout'] = int(config.getSingleValue("ftp_timeout"))
n_connection_timeout = int(config.getSingleValue("connection_timeout"))
### get debug options
output_curr_sockets = int(config.getSingleValue("output_curr_sockets"))
if output_curr_sockets==1:
fp = open("current_listed_sockets.txt", "w")
curr_keys = currentSockets.keys()
for key in curr_keys:
try:
connectionTime = currentSockets[key][0]
(attIP, attPort) = currentSockets[key][1].getpeername()
line = "%s:%s - %s\n" % (attIP, attPort, time.ctime(int(connectionTime)))
fp.write(line)
except socket.error, e:
pass
fp.close()
### read current vulnerability configuration
up_vuln_modules = readVulnModules(config, display=False)
up_portList = up_vuln_modules.keys()
newServerList = {}
curr_portList = []
### check if server needs to be removed
for server in serverList.values():
port = str(server.address[1]).strip()
curr_portList.append(port)
if not port in up_portList:
log("closing server on port %s" % (port), 0, "warn", divLogger['amunServer'], True)
server.close()
else:
newServerList[port] = server
### check if server needs to be added
for port in up_portList:
if not port in curr_portList:
log("starting new server on port %s" % (port), 0, "warn", divLogger['amunServer'], True)
for amun_server_ip in amunServerIPList:
server = amunServer((amun_server_ip,int(port)), "tcp", currentSockets, decodersDict, event_dict, up_vuln_modules, divLogger, config_dict)
newServerList[port] = server
del server
### check for differences in vulnmodules
for port in up_portList:
try:
newMods = up_vuln_modules[port]
curMods = vuln_modules[port]
if curMods != newMods:
### restart server with port
server = newServerList[port]
server.close()
log("restarting server on port %s" % (port), 0, "warn", divLogger['amunServer'], True)
for amun_server_ip in amunServerIPList:
server = amunServer( (amun_server_ip, int(port) ), "tcp", currentSockets, decodersDict, event_dict, up_vuln_modules, divLogger, config_dict)
newServerList[port] = server
del server
except KeyError:
pass
### remove some references
del curr_portList
del up_portList
del newMods
del curMods
### return updated lists
return newServerList,up_vuln_modules,n_connection_timeout
else:
return serverList,vuln_modules,connection_timeout
def createLogFile(logfilename, shortname, rotate=True, level=10):
"""
description: universal function to create logfiles
@logfilename: filename of the log to create
@shortname: a two character abbreviation
returns: logger instance
"""
logfile = "logs/%s" % (logfilename)
nLogger = logging.getLogger("amun-%s" % (shortname))
if rotate:
hdlr = logging.handlers.TimedRotatingFileHandler(logfile, 'midnight')
else:
hdlr = logging.FileHandler(logfile)
formatter = logging.Formatter('%(asctime)s %(levelname)s %(message)s')
hdlr.setFormatter(formatter)
nLogger.addHandler(hdlr)
nLogger.setLevel(level)
return nLogger
def runMain():
### check for garbage collector
if not gc.isenabled():
log("activating garbage collector", 0, "info", None, True)
gc.enable()
### read configuration file
conffile = "conf/amun.conf"
config = amun_config_parser.AmunConfigParser(conffile)
ipUtil = utils.utilities()
amunServerIPEntry = config.getSingleValue("ip")
amunServerIPList = ipUtil.genIPList(amunServerIPEntry)
newUser = config.getSingleValue("user")
newGroup = config.getSingleValue("group")
### read log directory from config and create if not exists
logdir = config.getSingleValue("logdir")
if not os.path.exists(logdir):
os.makedirs(logdir)
connection_timeout = int(config.getSingleValue("connection_timeout"))
### check if honeypot should be pingable
allow_ping = int(config.getSingleValue("honeypot_pingable"))
if not allow_ping:
### set iptables rule to block ping
ipt_command = "INPUT -p icmp -j DROP"
command = "iptables -A %s" % (ipt_command)
child = subprocess.Popen([command], shell=True, bufsize=1024, stdout=subprocess.PIPE, close_fds=True)
child.wait()
log("all servers listening on: %s" % (amunServerIPEntry), 0, "info", None, True)
vuln_modules = readVulnModules(config)
submit_modules = readSubmitModules(config)
log_modules = readLogModules(config)
### logger dictionary
divLogger = {}
### create download logfile
divLogger['download'] = createLogFile("download.log", "dl")
### create unknown download logfile
divLogger['unknownDownload'] = createLogFile("unknown_downloads.log", "ud")
### create successfull download logfile
suLogger = createLogFile("successfull_downloads.log", "su")
### create exploit logfile
exLogger = createLogFile("exploits.log", "ex")
### create amun server logfile
divLogger['amunServer'] = createLogFile("amun_server.log", "as")
### create amun request handler logfile
divLogger['requestHandler'] = createLogFile("amun_request_handler.log", "ar")
### create shellcode manager logfile
divLogger['shellcode'] = createLogFile("shellcode_manager.log", "sh")
### create vulnerabilities logfile
divLogger['vulnerability'] = createLogFile("vulnerabilities.log", "vu")
### create submission logfile
smLogger = createLogFile("submissions.log", "sm")
### create logging logfile
loLogger = createLogFile("logging.log", 'lo')
### create shellemulator logfile
divLogger['shellemulator'] = createLogFile("shellemulator.log", "emu")
### create Socket and Download Dicts
currentSockets = {}
currentDownloads = {}
tftp_downloads = {}
ftp_downloads = {}
bindports = {}
### event dictionary
event_dict = {
'download': {},
'exploit': {},
'successfull_downloads': {},
'refused_connections': {},
'timeout_connections': {},
'sucdown_connections':{},
'sucexpl_connections':{},
'initial_connections':{}
}
### configuration Dictionary
config_dict = {}
config_dict['block_refused'] = int(config.getSingleValue("block_refused"))
config_dict['block_timeout'] = int(config.getSingleValue("block_timeout"))
config_dict['block_sucdown'] = int(config.getSingleValue("block_sucdown"))
config_dict['block_sucexpl'] = int(config.getSingleValue("block_sucexpl"))
config_dict['replace_locals'] = int(config.getSingleValue("replace_local_ip"))
config_dict['store_unfinished_tftp'] = int(config.getSingleValue("store_unfinished_tftp"))
config_dict['check_http_filesize'] = int(config.getSingleValue("check_http_filesize"))
config_dict['tftp_max_retransmissions'] = int(config.getSingleValue("tftp_max_retransmissions"))
config_dict['check_new_vulns'] = int(config.getSingleValue("check_new_vulns"))
config_dict['log_local_downloads'] = int(config.getSingleValue("log_local_downloads"))
config_dict['ftp_port_range'] = config.getSingleValue("ftp_port_range")
config_dict['ftp_nat_ip'] = config.getSingleValue("ftp_nat_ip")
if config_dict['ftp_nat_ip']!="None":
ipReg = re.compile("(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})")
match = ipReg.search(config_dict['ftp_nat_ip'])
if not match:
config_dict['ftp_nat_ip'] = socket.gethostbyaddr(config_dict['ftp_nat_ip'])[2][0]
config_dict['last_check'] = int(time.time())
config_dict['verbose_logging'] = int(config.getSingleValue("verbose_logging"))
config_dict['max_open_sockets'] = int(config.getSingleValue("max_open_sockets"))
config_dict['sucexpl_blocktime'] = int(config.getSingleValue("sucexpl_blocktime"))
config_dict['sucdown_blocktime'] = int(config.getSingleValue("sucdown_blocktime"))
config_dict['timeout_blocktime'] = int(config.getSingleValue("timeout_blocktime"))
config_dict['refused_blocktime'] = int(config.getSingleValue("refused_blocktime"))
config_dict['bindport_timeout'] = int(config.getSingleValue("bindport_timeout"))
config_dict['tftp_retransmissions'] = int(config.getSingleValue("tftp_retransmissions"))
config_dict['ftp_timeout'] = int(config.getSingleValue("ftp_timeout"))
log("maximum number of allowed open sockets: %s" % (config_dict['max_open_sockets']), 0, "info", None, True)
### Register Shellcode Decoders
regDecode = decoders.decoders()
decodersDict = regDecode.getDecoders()
del regDecode
portList = []
vuln_ports = vuln_modules.keys()
portList = map(int, vuln_ports)
running = True
portList.sort()
### server liste
serverList = {}
### create TCP servers
for port in portList:
for amun_server_ip in amunServerIPList:
server = amunServer((amun_server_ip,port), "tcp", currentSockets, decodersDict, event_dict, vuln_modules, divLogger, config_dict)
serverList[port] = server
del server
del portList
del vuln_ports
### windows messenger popup spam
#server = amunServer((amun_server_ip,1026), "udp", currentSockets, decodersDict, event_dict, vuln_modules, divLogger, config_dict)
#for amun_server_ip in amunServerIPList:
### add UDP Server for Remote Buffer Overflow in sipXtapi
#server = amunServer((amun_server_ip,5060), "udp", currentSockets, decodersDict, event_dict, vuln_modules, divLogger, config_dict)
### and another one
#server = amunServer((amun_server_ip,5061), "udp", currentSockets, decodersDict, event_dict, vuln_modules, divLogger, config_dict)
### check port 7100 udp
#server = amunServer((amun_server_ip,7100), "udp", currentSockets, decodersDict, event_dict, vuln_modules, divLogger, config_dict)
#del server
### fifo queue of last stored binaries to reduce IO
lastBinaries = utils.fifoqueue(10)
### Lower Priviliges
if newUser!="root" and newGroup!="root":
lowerPrivileges(newUser, newGroup)
log("ready for evil orders:", 0, "info", None, True)
while running:
try:
### loop over open sockets
asyncore.loop(timeout=1, use_poll=True, count=1)
### check idle connections
check_idle_connections(currentSockets, connection_timeout, event_dict, divLogger['amunServer'], config_dict)
### check download events
check_download_events(event_dict, config_dict, currentDownloads, bindports, tftp_downloads, divLogger, currentSockets, ftp_downloads, decodersDict)
### check exploit events
check_for_exploit_event(event_dict, exLogger, log_modules, loLogger)
### check successfull downloads
check_for_succ_download_event(event_dict, suLogger, submit_modules, smLogger, config_dict['block_sucdown'], lastBinaries, log_modules, loLogger)
### check initial connection
check_for_initial_connection_event(event_dict, exLogger, log_modules, loLogger, currentSockets, divLogger['amunServer'], config_dict['verbose_logging'])
### check for idle bindports
check_idle_bindports(bindports, config_dict['bindport_timeout'])
### check for idle tftp downloads
check_idle_tftp_downloads(tftp_downloads, config_dict['tftp_retransmissions'])
### check for idle ftp downloads
check_idle_ftp_downloads(ftp_downloads, config_dict['ftp_timeout'])
### check the list of refused IPs
generic_check_unblock_ips(event_dict, 'refused_connections', config_dict['refused_blocktime'], divLogger['amunServer'], config_dict['verbose_logging'])
### check the list of timeouted IPs
generic_check_unblock_ips(event_dict, 'timeout_connections', config_dict['timeout_blocktime'], divLogger['amunServer'], config_dict['verbose_logging'])
### check the list of successfull download IPs
generic_check_unblock_ips(event_dict, 'sucdown_connections', config_dict['sucdown_blocktime'], divLogger['amunServer'], config_dict['verbose_logging'])
### check the list of successfull exploit IPs
generic_check_unblock_ips(event_dict, 'sucexpl_connections', config_dict['sucexpl_blocktime'], divLogger['amunServer'], config_dict['verbose_logging'])
### check running TCP Servers and reload config
(serverList, vuln_modules, connection_timeout) = checkServers(serverList, vuln_modules, divLogger, amunServerIPList, currentSockets, decodersDict, event_dict, config_dict, config, connection_timeout)
### release CPU for short time
time.sleep(.0001)
except socket.error, e:
pass
except StandardError, e:
print "amun_server main loop standard error"
print "error: %s" % (e)
f = StringIO.StringIO()
traceback.print_exc(file=f)
print f.getvalue()
running = False
break
except KeyboardInterrupt:
running = False
break
log("close all servers", 0, "info", None, True)
if len(serverList)>0:
server_keys = serverList.keys()
for key in server_keys:
serverList[key].close()
log("close remaining bindports", 0, "info", None, True)
if len(bindports)>0:
check_idle_bindports(bindports, 0)
log("close remaining sockets", 0, "info", None, True)
if len(currentSockets)>0:
conn_keys = currentSockets.keys()
for key in conn_keys:
try:
currentSockets[key][1].shutdown(socket.SHUT_RDWR)
except socket.error, e:
if key in currentSockets:
del currentSockets[key]
### Empty IPTables Input Table
if not allow_ping:
command = "iptables -D %s" % (ipt_command)