#!/usr/bin/python3
# -*- coding: utf-8 -*-

# Copyright (c) 2009-2025, Mario Vilas
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#     * Redistributions of source code must retain the above copyright notice,
#       this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice,this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the name of the copyright holder nor the names of its
#       contributors may be used to endorse or promote products derived from
#       this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

import os

from winappdbg import win32
from winappdbg.debug import Debug
from winappdbg.textio import HexDump


def my_event_handler(event):
    # Get the event name.
    name = event.get_event_name()

    # Get the event code.
    code = event.get_event_code()

    # Get the process ID where the event occured.
    pid = event.get_pid()

    # Get the thread ID where the event occured.
    tid = event.get_tid()

    # Get the value of EIP/RIP at the thread.
    pc = event.get_thread().get_pc()

    # Show something to the user.
    bits = event.get_process().get_bits()
    format_string = "%s (%s) at address %s, process %d, thread %d"
    message = format_string % (
        name,
        HexDump.integer(code, bits),
        HexDump.address(pc, bits),
        pid,
        tid,
    )
    print(message)

    # If the event is a crash...
    if code == win32.EXCEPTION_DEBUG_EVENT and event.is_last_chance():
        print("Crash detected, generating minidump...")

        # Generate a filename based on the process name and exception code.
        process = event.get_process()
        filename = process.get_filename()
        if filename:
            basename = os.path.basename(filename)
            basename = os.path.splitext(basename)[0]
        else:
            basename = "process_%d" % pid

        exception_code = event.get_exception_code()
        minidump_filename = "%s_crash_%08X.dmp" % (basename, exception_code)

        try:
            # Generate a minidump with full memory and exception information.
            # The event.generate_minidump() method automatically includes
            # the exception context and exception record.
            event.generate_minidump(
                minidump_filename,
                DumpType=win32.MiniDumpWithFullMemory
                | win32.MiniDumpWithHandleData
                | win32.MiniDumpWithThreadInfo,
            )
            print("Minidump saved to: %s" % minidump_filename)

        except Exception as e:
            print("Error generating minidump: %s" % e)
            import traceback

            traceback.print_exc()

        # You can also launch the interactive debugger from here. Try it! :)
        # event.debug.interactive()

        # Kill the process.
        event.get_process().kill()


def simple_debugger(argv):
    # Instance a Debug object, passing it the event handler callback.
    debug = Debug(my_event_handler, bKillOnExit=True)
    try:
        # Start a new process for debugging.
        debug.execv(argv)

        # Wait for the debugee to finish.
        debug.loop()

    # Stop the debugger.
    finally:
        debug.stop()


# When invoked from the command line,
# the first argument is an executable file,
# and the remaining arguments are passed to the newly created process.
if __name__ == "__main__":
    import sys

    simple_debugger(sys.argv[1:])