Pydbg: sample hook exception (access violation)

pydbg_access_violation.py

'''
#This commented program is vulnerable to a buffer overflow (copy it in a separate file)
from ctypes import *

msvcrt = cdll.msvcrt

raw_input("Once the debbuger is attached press any key") # Give the debugger time to attach, then hit a button

buffer = c_char_p("AAAAA") # Create the 5-byte destination buffer

#The Overflow string
overflow = 'A' * 100

msvcrt.strcpy(buffer,overflow) #Run the overflow
'''

'''
Main program that handle the access violation:
'''
from pydbg import *
from pydbg.defines import *
import utils #Utility libraries included with PyDbg



# This is our access violation handler
def check_accessv(dbg):
      # We skip first-chance exceptions
      if dbg.dbg.u.Exception.dwFirstChance:
      return DBG_EXCEPTION_NOT_HANDLED
      crash_bin = utils.crash_binning.crash_binning()
      crash_bin.record_crash(dbg)
      print crash_bin.crash_synopsis()
      dbg.terminate_process()
      return DBG_EXCEPTION_NOT_HANDLED
      

pid = raw_input("Enter the PID: ")

dbg = pydbg()
dbg.attach(int(pid))
dbg.set_callback(EXCEPTION_ACCESS_VIOLATION,check_accessv) #Create the callback for the exception access violation
dbg.run()