mirror of
https://github.com/volatilityfoundation/volatility
synced 2026-06-08 18:04:46 +00:00
atcuno
131 lines
4.5 KiB
Python
131 lines
4.5 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 common
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# based on sysctl_sysctl_debug_dump_node
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class mac_check_sysctl(common.AbstractMacCommand):
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""" Checks for unknown sysctl handlers """
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# define CTLFLAG_RD 0x80000000 /* Allow reads of variable */
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# define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */
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# define CTLFLAG_LOCKED 0x00800000 /* node will handle locking itself */
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def _get_perms(self, sysctl):
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ret = ""
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flags = sysctl.oid_kind
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checks = [0x80000000, 0x40000000, 0x00800000]
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perms = ["R", "W", "L"]
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for (i, c) in enumerate(checks):
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if c & flags:
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ret = ret + perms[i]
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else:
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ret = ret + "-"
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return ret
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def _process_sysctl_list(self, sysctl_list, i, r = 0):
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if type(sysctl_list) == obj.Pointer:
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sysctl_list = obj.Object("sysctl_oid_list", offset = sysctl_list.dereference(), vm = self.addr_space)
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sysctl = sysctl_list.slh_first
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# skip the head entry if new list (recursive call)
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if r:
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sysctl = sysctl = sysctl.oid_link.sle_next
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while sysctl and sysctl.is_valid():
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spaces = " " * i
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name = common.get_string(sysctl.oid_name, self.addr_space)
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if len(name) == 0:
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#sysctl = sysctl.oid_link.sle_next
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break
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num = sysctl.oid_number
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perms = self._get_perms(sysctl)
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handler = sysctl.oid_handler
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#define CTLTYPE_NODE 1
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#define CTLTYPE_INT 2 /* name describes an integer */
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#define CTLTYPE_STRING 3 /* name describes a string */
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#define CTLTYPE_QUAD 4 /* name describes a 64-bit number */
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#define CTLTYPE_OPAQUE 5 /* name describes a structure */
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#define CTLTYPE_STRUCT CTLTYPE_OPAQUE /* name describes a structure */
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ctltype = sysctl.oid_kind & 0xf
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if sysctl.oid_arg1 == 0 or not sysctl.oid_arg1.is_valid():
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val = ""
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elif ctltype == 1:
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if handler == 0:
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for info in self._process_sysctl_list(sysctl.oid_arg1, i + 2, r = 1):
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yield info
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val = "Node"
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elif ctltype == 2:
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val = sysctl.oid_arg1.dereference()
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elif ctltype == 3:
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val = common.get_string(sysctl.oid_arg1, self.addr_space)
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elif ctltype == 4:
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val = sysctl.oid_arg1.dereference()
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elif ctltype == 5:
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val = sysctl.oid_arg1.dereference()
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else:
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val = "<UNKNOWN VALUE FOR CTLTYPE %d>" % ctltype
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yield (sysctl, spaces, name, num, perms, handler, val)
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sysctl = sysctl.oid_link.sle_next
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def calculate(self):
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common.set_plugin_members(self)
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(kernel_symbol_addresses, kmods) = common.get_kernel_addrs(self)
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sysctl_children_addr = self.get_profile_symbol("_sysctl__children")
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sysctl_list = obj.Object("sysctl_oid_list", offset = sysctl_children_addr, vm = self.addr_space)
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for (sysctl, spaces, name, number, perms, handler, val) in self._process_sysctl_list(sysctl_list, 0):
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if common.is_known_address(handler, kernel_symbol_addresses, kmods):
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good = 1
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else:
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good = 0
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if good == 0:
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yield (name, number, perms, handler, val)
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def render_text(self, outfd, data):
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for (name, number, perms, handler, val) in data:
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outfd.write("%s %-6d %-20s %.08x %s\n" % (name, number, perms, handler, val))
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