/usr/lib/python2.7/dist-packages/rekall/plugins/darwin/processes.py is in python-rekall-core 1.6.0+dfsg-2.
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#
# Copyright 2013 Google Inc. All Rights Reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (at
# your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
Darwin Process collectors.
"""
__author__ = "Adam Sindelar <adamsh@google.com>"
from rekall import plugin
from rekall import registry
from rekall.plugins import core
from rekall.plugins.darwin import common
from rekall.plugins.common import memmap
class DarwinPslist(common.ProcessFilterMixin,
common.AbstractDarwinCommand):
name = "pslist"
table_header = [
dict(width=40, name="proc", type="proc"),
dict(width=8, name="alive"),
dict(name="ppid", width=6),
dict(name="uid", width=6),
dict(name="is64bit", width=6),
dict(name="start_time", width=30, style="short"),
dict(name="cr3", width=15, style="address")
]
def collect(self):
for proc in self.filter_processes():
yield dict(
proc=proc,
alive=proc.obj_producers != {"dead_procs"},
ppid=proc.p_ppid,
uid=proc.p_uid,
is64bit=proc.task.map.pmap.pm_task_map == "TASK_MAP_64BIT",
start_time=proc.p_start.as_datetime(),
cr3=proc.task.map.pmap.pm_cr3
)
class DarwinPsxView(common.ProcessFilterMixin,
common.AbstractDarwinCommand):
name = "psxview"
# pylint: disable=no-self-argument
@registry.classproperty
@registry.memoize
def table_header(cls):
header = [dict(width=40, name="proc", type="proc")]
for method in cls.methods():
header.append(dict(name=method, width=8))
return plugin.PluginHeader(*header)
def collect(self):
methods = self.methods()
for proc in self.filter_processes():
row = [proc]
for method in methods:
row.append(method in proc.obj_producers)
yield row
class DarwinPsTree(common.AbstractDarwinCommand):
name = "pstree"
table_header = [
dict(name="depth", type="DepthIndicator", width=10),
dict(name="pid", width=6),
dict(name="ppid", width=6),
dict(name="uid", width=6),
dict(name="name", width=30)
]
def collect(self):
# Get the first process from pslist.
first_proc = self.session.plugins.search(
"(select * from pslist() where proc.pid == 0).proc").first_result
for proc, depth in self.recurse_proc(first_proc, 0):
yield [depth, proc.pid, proc.p_ppid, proc.p_uid, proc.command]
def recurse_proc(self, proc, depth):
if proc.validate():
yield proc, depth
for child in proc.p_children.lh_first.p_sibling:
for subproc, subdepth in self.recurse_proc(child, depth + 1):
yield subproc, subdepth
class DarwinMaps(common.ProcessFilterMixin, common.AbstractDarwinCommand):
"""Display the process maps."""
__name = "maps"
def render(self, renderer):
renderer.table_header([
dict(name="vm_map_entry", style="address"),
dict(name="Proc", width=40),
("Start", "start", "[addrpad]"),
("End", "end", "[addrpad]"),
("Protection", "protection", "6"),
dict(name="Map Name", wrap=False),
])
for proc in self.filter_processes():
for map in proc.task.map.hdr.walk_list(
"links.next", include_current=False):
# Format the map permissions nicesly.
protection = (
("r" if map.protection.VM_PROT_READ else "-") +
("w" if map.protection.VM_PROT_WRITE else "-") +
("x" if map.protection.VM_PROT_EXECUTE else "-"))
# Find the vnode this mapping is attached to.
vnode = map.find_vnode_object()
renderer.table_row(
map,
proc,
map.links.start,
map.links.end,
protection,
"sub_map" if map.is_sub_map else vnode.path,
)
class DarwinVadDump(core.DirectoryDumperMixin, common.ProcessFilterMixin,
common.AbstractDarwinCommand):
"""Dump the VMA memory for a process."""
__name = "vaddump"
def render(self, renderer):
for proc in self.filter_processes():
if not proc.task.map.pmap:
continue
renderer.format("Pid: {0:6}\n", proc.p_pid)
# Get the task and all process specific information
task_space = proc.get_process_address_space()
name = proc.p_comm
for vma in proc.task.map.hdr.walk_list(
"links.next", include_current=False):
filename = "{0}.{1}.{2:08x}-{3:08x}.dmp".format(
name, proc.p_pid, vma.links.start, vma.links.end)
renderer.format(u"Writing {0}, pid {1} to {2}\n",
proc.p_comm, proc.p_pid, filename)
with renderer.open(directory=self.dump_dir,
filename=filename,
mode='wb') as fd:
self.CopyToFile(task_space, vma.links.start,
vma.links.end, fd)
class DarwinPSAUX(common.ProcessFilterMixin, common.AbstractDarwinCommand):
"""List processes with their commandline."""
__name = "psaux"
def render(self, renderer):
renderer.table_header([
("Pid", "pid", "8"),
("Name", "name", "20"),
("Stack", "stack", "[addrpad]"),
("Length", "length", "8"),
("Argc", "argc", "8"),
("Arguments", "argv", "[wrap:80]")])
for proc in self.filter_processes():
renderer.table_row(
proc.p_pid,
proc.p_comm,
proc.user_stack,
proc.p_argslen,
proc.p_argc,
" ".join(proc.argv))
class DarwinMemMap(memmap.MemmapMixIn, common.ProcessFilterMixin,
common.AbstractDarwinCommand):
"""Prints the memory map for darwin tasks."""
__name = "memmap"
def _get_highest_user_address(self):
return 0x800000000000
class DarwinMemDump(memmap.MemDumpMixin, common.ProcessFilterMixin,
common.AbstractDarwinCommand):
"""Dumps the memory map for darwin tasks."""
# Plugins below represent different enumeration methods for process filter:
class PsListAllProcHook(common.AbstractDarwinParameterHook):
"""List all processes by following the _allproc list head."""
name = "allproc"
def calculate(self):
first = self.session.profile.get_constant_object(
"_allproc", target="proclist").lh_first
result = set(first.p_list)
return [x.obj_offset for x in result]
class PsListTasksHook(common.AbstractDarwinParameterHook):
"""List all processes by following the _allproc list head."""
name = "tasks"
def calculate(self):
"""List processes using the processor tasks queue.
See
/osfmk/kern/processor.c (processor_set_things)
"""
seen = set()
tasks = self.session.profile.get_constant_object(
"_tasks",
target="queue_entry",
vm=self.session.kernel_address_space)
for task in tasks.list_of_type("task", "tasks"):
proc = task.bsd_info.deref()
if proc:
seen.add(proc.obj_offset)
return seen
class PsListPgrpHashHook(common.AbstractDarwinParameterHook):
"""List all processes by following the _allproc list head."""
name = "pgrphash"
def calculate(self):
"""Process groups are organized in a hash chain.
xnu-1699.26.8/bsd/sys/proc_internal.h
"""
seen = set()
# Note that _pgrphash is initialized through:
# xnu-1699.26.8/bsd/kern/kern_proc.c:195
# hashinit(int elements, int type, u_long *hashmask)
# /xnu-1699.26.8/bsd/kern/kern_subr.c: 327
# hashinit(int elements, int type, u_long *hashmask) {
# ...
# *hashmask = hashsize - 1;
# Hence the value in _pgrphash is one less than the size of the hash
# table.
pgr_hash_table = self.session.profile.get_constant_object(
"_pgrphashtbl",
target="Pointer",
target_args=dict(
target="Array",
target_args=dict(
target="pgrphashhead",
count=self.session.profile.get_constant_object(
"_pgrphash", "unsigned long") + 1
)
)
)
for slot in pgr_hash_table.deref():
for pgrp in slot.lh_first.walk_list("pg_hash.le_next"):
for proc in pgrp.pg_members.lh_first.walk_list(
"p_pglist.le_next"):
seen.add(proc.obj_offset)
return seen
class PsListPidHashHook(common.AbstractDarwinParameterHook):
"""List all processes by following the _allproc list head."""
name = "pidhash"
def calculate(self):
"""Lists processes using pid hash tables.
xnu-1699.26.8/bsd/kern/kern_proc.c:834:
pfind_locked(pid_t pid)
"""
seen = set()
# Note that _pidhash is initialized through:
# xnu-1699.26.8/bsd/kern/kern_proc.c:194
# pidhashtbl = hashinit(maxproc / 4, M_PROC, &pidhash);
# /xnu-1699.26.8/bsd/kern/kern_subr.c: 327
# hashinit(int elements, int type, u_long *hashmask) {
# ...
# *hashmask = hashsize - 1;
# Hence the value in pidhash is one less than the size of the hash
# table.
pid_hash_table = self.session.profile.get_constant_object(
"_pidhashtbl",
target="Pointer",
target_args=dict(
target="Array",
target_args=dict(
target="pidhashhead",
count=self.session.profile.get_constant_object(
"_pidhash", "unsigned long") + 1
)
)
)
for plist in pid_hash_table.deref():
for proc in plist.lh_first.walk_list("p_hash.le_next"):
if proc:
seen.add(proc.obj_offset)
return seen
class DarwinPgrpHashCollector(common.AbstractDarwinCachedProducer):
name = "pgrphash"
type_name = "proc"
class DarwinTaskProcessCollector(common.AbstractDarwinCachedProducer):
name = "tasks"
type_name = "proc"
class DarwinAllProcCollector(common.AbstractDarwinCachedProducer):
name = "allproc"
type_name = "proc"
class DarwinPidHashProcessCollector(common.AbstractDarwinCachedProducer):
name = "pidhash"
type_name = "proc"
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