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https://github.com/volatilityfoundation/volatility3.git
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87 lines
2.8 KiB
Python
87 lines
2.8 KiB
Python
# This file is Copyright 2019 Volatility Foundation and licensed under the Volatility Software License 1.0
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# which is available at https://www.volatilityfoundation.org/license/vsl-v1.0
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#
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import logging
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from typing import List
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from volatility3.framework import exceptions, interfaces
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from volatility3.framework import renderers
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from volatility3.framework.configuration import requirements
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from volatility3.framework.interfaces import plugins
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from volatility3.framework.renderers import format_hints
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from volatility3.framework.symbols import mac
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from volatility3.plugins.mac import lsmod
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vollog = logging.getLogger(__name__)
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class Check_syscall(plugins.PluginInterface):
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"""Check system call table for hooks."""
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_required_framework_version = (2, 0, 0)
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@classmethod
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def get_requirements(cls) -> List[interfaces.configuration.RequirementInterface]:
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return [
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requirements.ModuleRequirement(
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name="kernel",
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description="Kernel module for the OS",
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architectures=["Intel32", "Intel64"],
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),
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requirements.VersionRequirement(
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name="macutils", component=mac.MacUtilities, version=(1, 0, 0)
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),
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requirements.PluginRequirement(
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name="lsmod", plugin=lsmod.Lsmod, version=(2, 0, 0)
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),
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]
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def _generator(self):
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kernel = self.context.modules[self.config["kernel"]]
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mods = lsmod.Lsmod.list_modules(self.context, self.config["kernel"])
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handlers = mac.MacUtilities.generate_kernel_handler_info(
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self.context, kernel.layer_name, kernel, mods
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)
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table = kernel.object_from_symbol(symbol_name="sysent")
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for i, ent in enumerate(table):
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try:
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call_addr = ent.sy_call.dereference().vol.offset
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except exceptions.InvalidAddressException:
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continue
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if not call_addr or call_addr == 0:
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continue
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module_name, symbol_name = mac.MacUtilities.lookup_module_address(
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self.context, handlers, call_addr, self.config["kernel"]
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)
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yield (
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0,
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(
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format_hints.Hex(table.vol.offset),
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"SysCall",
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i,
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format_hints.Hex(call_addr),
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module_name,
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symbol_name,
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),
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)
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def run(self):
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return renderers.TreeGrid(
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[
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("Table Address", format_hints.Hex),
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("Table Name", str),
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("Index", int),
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("Handler Address", format_hints.Hex),
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("Handler Module", str),
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("Handler Symbol", str),
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],
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self._generator(),
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)
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