change_func_breakpoint.py

#!/usr/bin/env python

'''
Copyright (c) 2012 Chase Schultz

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

'''

'''
Author: Chase Schultz
Purpose: Function Hooking using IDAPython
Usage: Uses names of functions to set breakpoints
       Possible other uses - (code coverage)
Reference: Grey Hat Python - IDAPython Scripting Chapter
'''

from idaapi import *
import idautils


class PyConditionalHook():

    def __init__(self):
        pass

    def set_bp(self, address, cnd):

        global cond_file

        print "[+] Setting conditional IDAPython breakpoint on %08x" % address
        print "================= Breakpoint Added ===================\n\n"
        add_bpt(address, 0, BPT_SOFT)
        enable_bpt(address, True)
        SetBptCnd(address, '')
        #AddBpt(address)
        #SetBptAttr(address, BPTATTR_FLAGS, 0x0)


#idaapi.CompileLine('static cond() {return (RunPythonStatement("hooker()") | Byte(0x10000));}')

ea = ScreenEA()
pythonHook = PyConditionalHook()
for function_ea in Functions(SegStart(ea), SegEnd(ea)):

    # Goes through IDA DB and adds breakpoints to functions that have a specific string in name.
    if("Ndr" in GetFunctionName(function_ea)):
        print "================= Adding Breakpoint @ 0x%s =======" % hex(function_ea)
        print "Function Name:\t%s\nFunction Address:\t0x%s" % (GetFunctionName(function_ea), hex(function_ea))
        pythonHook.set_bp(function_ea, '')