#!~/.wine/drive_c/Python25/python.exe
# -*- coding: utf-8 -*-

# Acknowledgements:
#  Nicolas Economou, for his ptool suite on which this tool is inspired.
#  http://tinyurl.com/nicolaseconomou

# Process memory writer
# Copyright (c) 2009-2014, 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.

__revision__ = "$Id: pwrite.py 1299 2013-12-20 09:30:55Z qvasimodo $"

import os
import sys
import struct

from winappdbg import Process, System, HexInput, HexDump

def main():
    print "Process memory writer"
    print "by Mario Vilas (mvilas at gmail.com)"
    print

    if len(sys.argv) < 4:
        script = os.path.basename(sys.argv[0])
        print "  %s <pid> <address> {binary input file / hex data}" % script
        print "  %s <process.exe> <address> {binary input file / hex data}" % script
        return

    System.request_debug_privileges()

    try:
        pid = HexInput.integer(sys.argv[1])
    except Exception:
        s = System()
        s.scan_processes()
        pl = s.find_processes_by_filename(sys.argv[1])
        if not pl:
            print "Process not found: %s" % sys.argv[1]
            return
        if len(pl) > 1:
            print "Multiple processes found for %s" % sys.argv[1]
            for p,n in pl:
                print "\t%s: %s" % (HexDump.integer(p),n)
            return
        pid = pl[0][0].get_pid()

    try:
        address = HexInput.integer(sys.argv[2])
    except Exception:
        print "Invalid value for address: %s" % sys.argv[2]
        return

    filename = ' '.join(sys.argv[3:])
    if os.path.exists(filename):
        data = open(filename, 'rb').read()
        print "Read %d bytes from %s" % (len(data), filename)
    else:
        try:
            data = HexInput.hexadecimal(filename)
        except Exception:
            print "Invalid filename or hex block: %s" % filename
            return

    p = Process(pid)
    p.write(address, data)
    print "Written %d bytes to PID %d" % (len(data), pid)

if __name__ == '__main__':
    try:
        import psyco
        psyco.bind(main)
    except ImportError:
        pass
    main()