mirror of
https://github.com/hakril/PythonForWindows
synced 2026-06-08 14:31:45 +00:00
Clement Rouault
49 lines
1.8 KiB
Python
49 lines
1.8 KiB
Python
import sys
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import os.path
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import pprint
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sys.path.append(os.path.abspath(__file__ + "\..\.."))
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import windows
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import windows.test
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import windows.debug
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from windows.generated_def.winstructs import *
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class MyFunctionBP(windows.debug.FunctionBP):
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def __init__(self, target, addr=None):
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super(MyFunctionBP, self).__init__(target, addr)
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self.target_name = target.target_func
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self.counter = 3
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def trigger(self, dbg, exc):
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if not self.counter:
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print("Exiting process")
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dbg.current_process.exit()
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return
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params = self.extract_arguments(dbg.current_process, dbg.current_thread)
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filename = params["ObjectAttributes"].contents.ObjectName.contents.Buffer
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handle_addr = params["FileHandle"].value
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self.data = (filename, handle_addr)
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self.break_on_ret(dbg, exc)
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def ret_trigger(self, dbg, exc):
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filename, handle_addr = self.data
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ret_value = dbg.current_thread.context.func_result # EAX / RAX depending of bitness
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handle_value = dbg.current_process.read_ptr(handle_addr)
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if ret_value:
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print("NtCreateFile of <{0}> FAILED (result={1:#x})".format(filename, ret_value))
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return
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print("NtCreateFile of <{0}>: handle = {1:#x}".format(filename, handle_value))
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# Manual verification
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fhandle = [h for h in windows.system.handles if h.dwProcessId == dbg.current_process.pid and h.wValue == handle_value]
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if not fhandle:
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raise ValueError("handle not found!")
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fhandle = fhandle[0]
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print("Handle manually found! typename=<{0}>, name=<{1}>".format(fhandle.type, fhandle.name))
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print("")
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self.counter -= 1
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calc = windows.test.pop_calc_32(dwCreationFlags=DEBUG_PROCESS)
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d = windows.debug.Debugger(calc)
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d.add_bp(MyFunctionBP(windows.winproxy.NtCreateFile))
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d.loop() |