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Plugins: Update pslist_sessions to be a different process lister

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This commit is contained in:
Mike Auty
2020-08-14 22:30:34 +01:00
committed by ikelos
parent 93e16a7151
commit 08b8564802
2 changed files with 52 additions and 71 deletions
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volatility/framework/plugins/mac/pslist.py
+52 -1
View File
@@ -17,7 +17,7 @@ class PsList(interfaces.plugins.PluginInterface):
"""Lists the processes present in a particular mac memory image."""
_version = (2, 0, 0)
pslist_methods = ['tasks', 'allproc', 'process_group']
pslist_methods = ['tasks', 'allproc', 'process_group', 'sessions']
@classmethod
def get_requirements(cls):
@@ -60,6 +60,8 @@ class PsList(interfaces.plugins.PluginInterface):
list_tasks = cls.list_tasks_tasks
elif method == 'process_group':
list_tasks = cls.list_tasks_process_group
elif method == 'sessions':
list_tasks = cls.list_tasks_sessions
else:
raise ValueError("Impossible method choice chosen")
vollog.debug("Using method {}".format(method))
@@ -175,6 +177,55 @@ class PsList(interfaces.plugins.PluginInterface):
if kernel_layer.is_valid(proc.vol.offset, proc.vol.size) and not filter_func(proc):
yield proc
@classmethod
def list_tasks_sessions(cls,
context: interfaces.context.ContextInterface,
layer_name: str,
darwin_symbols: str,
filter_func: Callable[[int], bool] = lambda _: False) -> \
Iterable[interfaces.objects.ObjectInterface]:
"""Lists all the tasks in the primary layer using process groups
Args:
context: The context to retrieve required elements (layers, symbol tables) from
layer_name: The name of the layer on which to operate
darwin_symbols: The name of the table containing the kernel symbols
filter_func: A function which takes a task object and returns True if the task should be ignored/filtered
Returns:
The list of task objects from the `layer_name` layer's `tasks` list after filtering
"""
kernel = contexts.Module(context, darwin_symbols, layer_name, 0)
table_size = kernel.object_from_symbol(symbol_name = "sesshash")
sesshashtbl = kernel.object_from_symbol(symbol_name = "sesshashtbl")
proc_array = kernel.object(object_type = "array",
offset = sesshashtbl,
count = table_size + 1,
subtype = kernel.get_type("sesshashhead"))
for proc_list in proc_array:
# test the validity of the current element
# it is expected that many won't be initialized
try:
p = proc_list.lh_first
except exceptions.PagedInvalidAddressException:
continue
seen = set()
while p and p.vol.offset not in seen:
seen.add(p.vol.offset)
if p.is_readable() and p.s_leader.is_readable() and not filter_func(p.s_leader):
yield p.s_leader
try:
p = p.s_hash.le_next
except exceptions.PagedInvalidAddressException:
break
@classmethod
def list_tasks_process_group(cls,
context: interfaces.context.ContextInterface,
volatility/framework/plugins/mac/pslist_sessions.py
-70
View File
@@ -1,70 +0,0 @@
# This file is Copyright 2019 Volatility Foundation and licensed under the Volatility Software License 1.0
# which is available at https://www.volatilityfoundation.org/license/vsl-v1.0
#
import logging
from typing import Callable, Dict, Iterable
from volatility.framework import constants, interfaces, objects, contexts, exceptions
from volatility.plugins.mac import pslist
vollog = logging.getLogger(__name__)
class Pslist_Sessions(pslist.PsList):
"""Lists the processes present in a particular mac memory image."""
@classmethod
def list_tasks(cls,
context: interfaces.context.ContextInterface,
layer_name: str,
darwin_symbols: str,
filter_func: Callable[[int], bool] = lambda _: False) -> \
Iterable[interfaces.objects.ObjectInterface]:
"""Lists all the tasks in the primary layer.
Args:
context: The context to retrieve required elements (layers, symbol tables) from
layer_name: The name of the layer on which to operate
darwin_symbols: The name of the table containing the kernel symbols
filter_func: A function which takes a task object and returns True if the task should be ignored/filtered
Returns:
The list of task objects from the `layer_name` layer's `tasks` list after filtering
"""
kernel = contexts.Module(context, darwin_symbols, layer_name, 0)
kernel_as = context.layers[layer_name]
table_size = kernel.object_from_symbol(symbol_name = "sesshash")
sesshashtbl = kernel.object_from_symbol(symbol_name = "sesshashtbl")
proc_array = kernel.object(object_type = "array",
offset = sesshashtbl,
count = table_size + 1,
subtype = kernel.get_type("sesshashhead"))
for proc_list in proc_array:
# test the validity of the current element
# it is expected that many won't be initialized
try:
p = proc_list.lh_first
except exceptions.PagedInvalidAddressException:
continue
seen = set()
while p and p.vol.offset not in seen:
seen.add(p.vol.offset)
if p.is_readable() and p.s_leader.is_readable():
yield p.s_leader
try:
p = p.s_hash.le_next
except exceptions.PagedInvalidAddressException:
break