#!/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 sys import argv

from winappdbg.crash import CrashDump
from winappdbg.disasm import Disassembler
from winappdbg.textio import HexInput

# If there are no command line arguments...
if len(argv) == 1:
    # Show the help message.
    print("Usage:")
    print("  %s <file> [offset] [size] [arch] [engine]" % argv[0])

    # Show the available disassembler engines.
    print()
    print("Supported disassembler engines:")
    print("-------------------------------")
    available = Disassembler.get_available_engines()
    for engine in Disassembler.get_all_engines():
        print()
        print("Name: %s" % engine.name)
        print("Description: %s" % engine.desc)
        print("Available: %s" % ("YES" if engine in available else "NO"))
        print("Supported architectures: %s" % ", ".join(engine.supported))

# If there are command line arguments...
else:
    # Get the arguments from the command line.
    filename = argv[1]
    try:
        offset = HexInput.address(argv[2])
    except IndexError:
        offset = 0
    try:
        size = HexInput.integer(argv[3])
    except IndexError:
        size = 0
    try:
        arch = argv[4]
    except IndexError:
        arch = None
    try:
        engine = argv[5]
    except IndexError:
        engine = None

    # Load the requested disassembler engine.
    disasm = Disassembler(arch, engine)

    # Load the binary code.
    with open(filename, "rb") as fd:
        fd.seek(offset)
        if size:
            code = fd.read(size)
        else:
            code = fd.read()

    # Disassemble the code.
    disassembly = disasm.decode(offset, code)

    # Show the disassembly.
    print(CrashDump.dump_code(disassembly, offset))