mirror of
https://github.com/volatilityfoundation/volatility
synced 2026-06-08 18:04:46 +00:00
mike.auty@gmail.com
114 lines
3.9 KiB
Python
114 lines
3.9 KiB
Python
# Volatility
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#
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# This program 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 (at
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# your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# 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 this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""
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@author: Andrew Case
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@license: GNU General Public License 2.0 or later
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@contact: atcuno@gmail.com
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@organization:
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"""
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import volatility.obj as obj
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import mac_common
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import mac_lsmod
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from mac_lsmod import mac_lsmod as mac_lsmod
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class mac_notifiers(mac_lsmod):
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""" detects rootkits that add hooks into I/O Kit (e.g. LogKext) """
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def calculate(self):
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(kernel_symbol_addresses, kmods) = mac_common.get_kernel_addrs(self)
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gnotify_addr = mac_common.get_cpp_sym("gNotifications", self.smap)
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gnotify_ptr = obj.Object("Pointer", offset=gnotify_addr, vm=self.addr_space)
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gnotifications = obj.Object("OSDictionary", offset=gnotify_ptr, vm=self.addr_space)
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ents = obj.Object(theType = 'Array', offset = gnotifications.dictionary, vm = self.addr_space, targetType = 'dictEntry', count = gnotifications.count)
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# walk the current set of notifications
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for i in xrange(0, gnotifications.count):
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ent = ents[i]
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if ent == None:
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continue
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s = obj.Object("OSString", offset=ent.key, vm=self.addr_space)
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key = mac_common.get_string(s.string.v(), self.addr_space)
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# get the value
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valset = obj.Object("OSOrderedSet", offset=ent.value, vm=self.addr_space)
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notifiers_ptrs = obj.Object(theType = 'Array', offset = valset.array, vm = self.addr_space, targetType = 'Pointer', count = valset.count)
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for i in xrange(0, valset.count):
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notifier = obj.Object("_IOServiceNotifier", offset=notifiers_ptrs[i], vm=self.addr_space)
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if notifier == None:
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continue
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matches = self.get_matching(notifier)
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# this is the function that handles whatever the notification is for
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# this should be only in the kernel or in one of the known IOKit drivers for the specific kernel
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handler = notifier.handler
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good = mac_common.is_known_address(handler, kernel_symbol_addresses, kmods)
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if good == 0:
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yield (key, notifier, matches)
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# returns the list of matching notifiers (serviceMatch) for a notifier as a string
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def get_matching(self, notifier):
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matches = []
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matching = notifier.matching
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ents = obj.Object(theType = 'Array', offset = matching.dictionary, vm = self.addr_space, targetType = 'dictEntry', count = matching.count)
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for i in xrange(0, matching.count):
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ent = ents[i]
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if ent == None:
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continue
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s = obj.Object("OSString", offset=ent.key, vm=self.addr_space)
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key = mac_common.get_string(s.string.v(), self.addr_space)
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val = obj.Object("OSString", offset=ent.value, vm=self.addr_space)
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match = mac_common.get_string(val.string.v(), self.addr_space)
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matches.append(match)
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return ",".join(matches)
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def render_text(self, outfd, data):
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for (key, notifier, matches) in data:
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print "Uknown %s notifier handler: %x matches: %s" % (key, notifier.handler, matches)
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