mirror of
https://github.com/volatilityfoundation/volatility
synced 2026-06-08 18:04:46 +00:00
Andrew C
82 lines
3.0 KiB
Python
82 lines
3.0 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 sys
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import volatility.obj as obj
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import volatility.plugins.mac.common as common
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from lsmod import mac_lsmod as mac_lsmod
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class mac_trustedbsd(mac_lsmod):
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""" Lists malicious trustedbsd policies """
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def get_members(self):
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h = self.profile.types['mac_policy_ops']
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return h.keywords["members"]
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def calculate(self):
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common.set_plugin_members(self)
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# get all the members of 'mac_policy_ops' so that we can check them (they are all function ptrs)
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ops_members = self.get_members()
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# get the symbols need to check for if rootkit or not
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(kernel_symbol_addresses, kmods) = common.get_kernel_addrs(self)
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list_addr = self.addr_space.profile.get_symbol("_mac_policy_list")
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plist = obj.Object("mac_policy_list", offset = list_addr, vm = self.addr_space)
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parray = obj.Object('Array', offset = plist.entries, vm = self.addr_space, targetType = 'mac_policy_list_element', count = plist.staticmax + 1)
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for ent in parray:
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# I don't know how this can happen, but the kernel makes this check all over the place
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# the policy isn't useful without any ops so a rootkit can't abuse this
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if ent.mpc == None:
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continue
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name = ent.mpc.mpc_name.dereference()
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ops = obj.Object("mac_policy_ops", offset = ent.mpc.mpc_ops, vm = self.addr_space)
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# walk each member of the struct
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for check in ops_members:
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ptr = ops.__getattr__(check)
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if ptr.v() != 0 and ptr.is_valid():
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(good, module) = common.is_known_address_name(ptr, kernel_symbol_addresses, kmods)
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yield (good, check, module, name, ptr)
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def render_text(self, outfd, data):
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self.table_header(outfd, [("Check", "40"), ("Name", "20"), ("Pointer", "[addrpad]"), ("Module", ""), ("Status", "")])
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for (good, check, module, name, ptr) in data:
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if good:
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status = "OK"
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else:
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status = "HOOKED"
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self.table_row(outfd, check, name, ptr, module, status)
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