/usr/lib/python2.7/dist-packages/rekall/plugins/response/processes.py is in python-rekall-core 1.6.0+dfsg-2.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 | """Rekall plugins for displaying processes in live triaging."""
import psutil
from efilter.protocols import structured
from rekall import utils
from rekall.plugins import core
from rekall.plugins.response import common
from rekall.plugins.overlays import basic
from rekall.plugins import yarascanner
class _LiveProcess(utils.SlottedObject):
"""An object to represent a live process.
This is the live equivalent of _EPROCESS.
"""
__slots__ = ("_proc", "_obj_profile", "session",
"start_time", "pid")
def __init__(self, proc, session=None):
"""Construct a representation of the live process.
Args:
proc: The psutil.Process instance.
"""
# Hold on to the original psutil object.
self._proc = proc
self._obj_profile = None
self.session = session
super(_LiveProcess, self).__init__()
self.start_time = basic.UnixTimeStamp(
name="create_time", value=self.create_time, session=self.session)
@utils.safe_property
def obj_profile(self):
# Delay creation of the profile because it needs to look in the
# environment which is slow.
if self._obj_profile is None:
self._obj_profile = common.APIProfile(
session=self.session, proc=self)
return self._obj_profile
def __int__(self):
return self.pid
def _get_field(self, field_name):
try:
result = getattr(self._proc, field_name)
if callable(result):
result = result()
return result
except psutil.Error:
# Some processes do not have environ defined.
if field_name == "environ":
return {}
return None
except AttributeError:
return None
def __format__(self, formatspec):
"""Support the format() protocol."""
if not formatspec:
formatspec = "s"
if formatspec[-1] in "xdXD":
return format(int(self), formatspec)
return object.__format__(self, formatspec)
def __repr__(self):
return "<Live Process pid=%s>" % self.pid
def get_process_address_space(self):
return common.APIProcessAddressSpace(self.pid, session=self.session)
def as_dict(self):
try:
return self._proc.as_dict()
except Exception:
# This can happen if the process no longer exists.
return {}
# Automatically add accessors for psutil fields.
psutil_fields = ['cmdline', 'connections', 'cpu_affinity',
'cpu_percent', 'cpu_times', 'create_time',
'cwd', 'environ', 'exe', 'gids', 'io_counters',
'ionice', 'memory_full_info', 'memory_info',
'memory_info_ex', 'memory_maps', 'memory_percent',
'name', 'nice', 'num_ctx_switches', 'num_fds',
'num_threads', 'open_files', 'pid', 'ppid',
'status', 'terminal', 'threads', 'uids', 'username',
'num_handles']
# Generate accessors for psutil derived properties.
properties = dict(__slots__=())
for field in psutil_fields:
properties[field] = property(
lambda self, field=field: self._get_field(field))
LiveProcess = type("LiveProcess", (_LiveProcess, ), properties)
structured.IStructured.implement(
for_type=LiveProcess,
implementations={
structured.resolve: lambda d, m: getattr(d, m, None),
structured.getmembers_runtime: lambda d: psutil_fields + d.keys(),
}
)
class APIProcessFilter(common.AbstractAPICommandPlugin):
"""A live process filter using the system APIs."""
__abstract = True
__args = [
dict(name="pids", positional=True, type="ArrayIntParser", default=[],
help="One or more pids of processes to select."),
dict(name="proc_regex", default=None, type="RegEx",
help="A regex to select a process by name."),
]
@utils.safe_property
def filtering_requested(self):
return (self.plugin_args.pids or self.plugin_args.proc_regex)
def filter_processes(self):
"""Filters eprocess list using pids lists."""
for proc in self.list_process():
if not self.filtering_requested:
yield proc
else:
if int(proc.pid) in self.plugin_args.pids:
yield proc
elif (self.plugin_args.proc_regex and
self.plugin_args.proc_regex.match(
utils.SmartUnicode(proc.name))):
yield proc
def list_process(self):
result = [LiveProcess(x, session=self.session)
for x in psutil.process_iter()]
return result
class APIPslist(APIProcessFilter):
"""A live pslist plugin using the APIs."""
name = "pslist"
table_header = [
dict(name="proc", hidden=True),
dict(name="Name", width=30),
dict(name="pid", width=6, align="r"),
dict(name="ppid", width=6, align="r"),
dict(name="Thds", width=6, align="r"),
dict(name="Hnds", width=8, align="r"),
dict(name="wow64", width=6),
dict(name="start", width=24),
dict(name="binary"),
]
def column_types(self):
return self._row(LiveProcess(psutil.Process(), session=self.session))
def is_wow64(self, proc):
"""Determine if the proc is Wow64."""
# Not the most accurate method but very fast.
return (proc.environ.get("PROCESSOR_ARCHITECTURE") == 'x86' and
proc.environ.get("PROCESSOR_ARCHITEW6432") == 'AMD64')
def _row(self, proc):
return dict(proc=proc,
Name=proc.name,
pid=proc.pid,
ppid=proc.ppid,
Thds=proc.num_threads,
Hnds=proc.num_handles,
wow64=self.is_wow64(proc),
start=proc.start_time,
binary=proc.exe)
def collect(self):
for proc in self.filter_processes():
yield self._row(proc)
class APISetProcessContext(core.SetProcessContextMixin,
APIProcessFilter):
"""A cc plugin for setting process context to live mode."""
name = "cc"
class APIProcessScanner(APIProcessFilter):
"""Scanner for scanning processes using the ReadProcessMemory() API."""
__abstract = True
def generate_memory_ranges(self):
with self.session.plugins.cc() as cc:
for task in self.filter_processes():
comment = "%s (%s)" % (task.name, task.pid)
cc.SwitchProcessContext(task)
process_address_space = self.session.GetParameter(
"default_address_space")
for _, _, run in process_address_space.runs:
vad = run.data["vad"]
self.session.logging.info(
"Scanning %s (%s) in: %s [%#x-%#x]",
task.name, task.pid, vad.filename or "",
vad.start, vad.end)
run.data["comment"] = comment
run.data["task"] = task
yield run
class ProcessYaraScanner(yarascanner.YaraScanMixin, APIProcessScanner):
"""Yara scan process memory using the ReadProcessMemory() API."""
name = "yarascan"
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