mirror of
https://github.com/volatilityfoundation/volatility
synced 2026-06-08 18:04:46 +00:00
Andrew Case
110 lines
4.3 KiB
Python
110 lines
4.3 KiB
Python
# Volatility
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# Copyright (C) 2007-2013 Volatility Foundation
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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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"""
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@author: Andrew Case
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@license: GNU General Public License 2.0
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@contact: atcuno@gmail.com
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@organization:
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"""
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import os
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import volatility.obj as obj
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import volatility.plugins.linux.common as linux_common
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import volatility.plugins.linux.lsmod as linux_lsmod
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class linux_check_afinfo(linux_common.AbstractLinuxCommand):
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"""Verifies the operation function pointers of network protocols"""
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def check_members(self, var_ops, members, modules):
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for (hooked_member, hook_address) in self.verify_ops(var_ops, members, modules):
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yield (hooked_member, hook_address)
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def check_afinfo(self, var_name, var, op_members, seq_members, modules):
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for (hooked_member, hook_address) in self.check_members(var.seq_fops, op_members, modules):
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yield (var_name, hooked_member, hook_address)
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# newer kernels
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if hasattr(var, "seq_ops"):
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for (hooked_member, hook_address) in self.check_members(var.seq_ops, seq_members, modules):
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yield (var_name, hooked_member, hook_address)
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elif not self.is_known_address(var.seq_show, modules):
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yield (var_name, "show", var.seq_show)
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def _pre_4_18(self, modules, seq_members):
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op_members = self.profile.types['file_operations'].keywords["members"].keys()
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tcp = ("tcp_seq_afinfo", ["tcp6_seq_afinfo", "tcp4_seq_afinfo"])
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udp = ("udp_seq_afinfo", ["udplite6_seq_afinfo", "udp6_seq_afinfo", "udplite4_seq_afinfo", "udp4_seq_afinfo"])
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protocols = [tcp, udp]
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for proto in protocols:
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struct_type = proto[0]
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for global_var_name in proto[1]:
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global_var_addr = self.addr_space.profile.get_symbol(global_var_name)
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if not global_var_addr:
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continue
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global_var = obj.Object(struct_type, offset = global_var_addr, vm = self.addr_space)
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for (name, member, address) in self.check_afinfo(global_var_name, global_var, op_members, seq_members, modules):
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yield (name, member, address)
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# https://lore.kernel.org/patchwork/patch/901043/
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def _4_18_plus(self, modules, seq_members):
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ops_structs = ["raw_seq_ops", "udp_seq_ops", "arp_seq_ops", "unix_seq_ops", "udp6_seq_ops"
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"raw6_seq_ops", "tcp_seq_ops", "tcp4_seq_ops", "tcp6_seq_ops", "packet_seq_ops"]
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for op_struct in ops_structs:
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var_addr = self.profile.get_symbol(op_struct)
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if var_addr == None:
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continue
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var = obj.Object("seq_operations", offset = var_addr, vm = self.addr_space)
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for hooked_member, hook_address in self.check_members(var, seq_members, modules):
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yield op_struct, hooked_member, hook_address
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def calculate(self):
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linux_common.set_plugin_members(self)
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modules = linux_lsmod.linux_lsmod(self._config).get_modules()
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seq_members = self.profile.types['seq_operations'].keywords["members"].keys()
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if self.addr_space.profile.obj_has_member("tcp_seq_afinfo", "seq_fops"):
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func = self._pre_4_18
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else:
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func = self._4_18_plus
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for name, member, address in func(modules, seq_members):
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yield name, member, address
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def render_text(self, outfd, data):
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self.table_header(outfd, [("Symbol Name", "42"),
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("Member", "30"),
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("Address", "[addrpad]")])
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for (what, member, address) in data:
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self.table_row(outfd, what, member, address)
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