#!/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.

from winappdbg.debug import Debug
from winappdbg.event import EventHandler
from winappdbg.textio import HexDump


class MyEventHandler(EventHandler):
    # Create process events go here.
    def create_process(self, event):
        # Start tracing the main thread.
        event.debug.start_tracing(event.get_tid())

    # Create thread events go here.
    def create_thread(self, event):
        # Start tracing the new thread.
        event.debug.start_tracing(event.get_tid())

    # Single step events go here.
    def single_step(self, event):
        # Show the user where we're running.
        thread = event.get_thread()
        pc = thread.get_pc()
        code = thread.disassemble(pc, 0x10)[0]
        bits = event.get_process().get_bits()
        print("%s: %s" % (HexDump.address(code[0], bits), code[2].lower()))


def simple_debugger(argv):
    # Instance a Debug object using the "with" statement.
    # Note how we don't need to call "debug.stop()" anymore.
    with Debug(MyEventHandler(), bKillOnExit=True) as debug:
        # Start a new process for debugging.
        debug.execv(argv)

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


# 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:])