mirror of
https://github.com/volatilityfoundation/volatility
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iMHLv2
6c6f3844e4
dumping exe vs mem is now just a commandline arg to ProcDump. move main methods to object classes of _IMAGE_DOS_HEADER - now its easier to extract PE files from anywhere without inheriting from a plugin
106 lines
4.3 KiB
Python
106 lines
4.3 KiB
Python
# Volatility
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# Copyright (C) 2007-2013 Volatility Foundation
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# Copyright (c) 2008 Brendan Dolan-Gavitt <bdolangavitt@wesleyan.edu>
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#
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# Additional Authors:
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# Mike Auty <mike.auty@gmail.com>
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#
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# This file is part of Volatility.
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#
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# Volatility is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# Volatility is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Volatility. If not, see <http://www.gnu.org/licenses/>.
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#
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import os
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import struct
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import volatility.plugins.taskmods as taskmods
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import volatility.debug as debug
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import volatility.obj as obj
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import volatility.exceptions as exceptions
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class ProcDump(taskmods.DllList):
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"""Dump a process to an executable file sample"""
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def __init__(self, config, *args, **kwargs):
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taskmods.DllList.__init__(self, config, *args, **kwargs)
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config.add_option('DUMP-DIR', short_option = 'D', default = None,
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cache_invalidator = False,
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help = 'Directory in which to dump executable files')
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config.add_option("UNSAFE", short_option = "u", default = False, action = 'store_true',
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help = 'Bypasses certain sanity checks when creating image')
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config.add_option("MEMORY", short_option = "m", default = False, action = 'store_true',
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help = "Carve as a memory sample rather than exe/disk")
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def dump_pe(self, space, base, dump_file):
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"""
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Dump a PE from an AS into a file.
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@param space: an AS to use
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@param base: PE base address
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@param dump_file: dumped file name
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@returns a string status message
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"""
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of = open(os.path.join(self._config.DUMP_DIR, dump_file), 'wb')
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pe_file = obj.Object("_IMAGE_DOS_HEADER", offset = base, vm = space)
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try:
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for offset, code in pe_file.get_image(unsafe = self._config.UNSAFE, memory = self._config.MEMORY):
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of.seek(offset)
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of.write(code)
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result = "OK: {0}".format(dump_file)
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except ValueError, ve:
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result = "Error: {0}".format(ve)
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except exceptions.SanityCheckException, ve:
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result = "Error: {0} Try -u/--unsafe".format(ve)
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finally:
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of.close()
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return result
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def render_text(self, outfd, data):
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"""Renders the tasks to disk images, outputting progress as they go"""
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if self._config.DUMP_DIR == None:
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debug.error("Please specify a dump directory (--dump-dir)")
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if not os.path.isdir(self._config.DUMP_DIR):
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debug.error(self._config.DUMP_DIR + " is not a directory")
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self.table_header(outfd,
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[("Process(V)", "[addrpad]"),
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("ImageBase", "[addrpad]"),
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("Name", "20"),
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("Result", "")])
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for task in data:
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task_space = task.get_process_address_space()
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if task_space == None:
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result = "Error: Cannot acquire process AS"
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elif task.Peb == None:
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# we must use m() here, because any other attempt to
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# reference task.Peb will try to instantiate the _PEB
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result = "Error: PEB at {0:#x} is paged".format(task.m('Peb'))
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elif task_space.vtop(task.Peb.ImageBaseAddress) == None:
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result = "Error: ImageBaseAddress at {0:#x} is paged".format(task.Peb.ImageBaseAddress)
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else:
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dump_file = "executable." + str(task.UniqueProcessId) + ".exe"
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result = self.dump_pe(task_space,
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task.Peb.ImageBaseAddress,
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dump_file)
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self.table_row(outfd,
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task.obj_offset,
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task.Peb.ImageBaseAddress,
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task.ImageFileName,
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result)
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