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63 lines
2.8 KiB
Python
63 lines
2.8 KiB
Python
# This file is Copyright 2020 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 volatility.framework import interfaces, renderers, contexts, exceptions
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from volatility.framework.configuration import requirements
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from volatility.framework.renderers import format_hints
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from volatility.framework.symbols import linux
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from volatility.plugins.linux import lsmod
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vollog = logging.getLogger(__name__)
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class Keyboard_notifiers(interfaces.plugins.PluginInterface):
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"""Parses the keyboard notifier call chain"""
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_required_framework_version = (2, 0, 0)
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@classmethod
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def get_requirements(cls):
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return [
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requirements.TranslationLayerRequirement(name = 'primary',
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description = 'Memory layer for the kernel',
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architectures = ["Intel32", "Intel64"]),
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requirements.SymbolTableRequirement(name = "vmlinux", description = "Linux kernel symbols"),
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requirements.PluginRequirement(name = 'lsmod', plugin = lsmod.Lsmod, version = (1, 0, 0)),
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requirements.VersionRequirement(name = 'linuxutils', component = linux.LinuxUtilities, version = (1, 0, 0))
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]
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def _generator(self):
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vmlinux = contexts.Module(self.context, self.config['vmlinux'], self.config['primary'], 0)
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modules = lsmod.Lsmod.list_modules(self.context, self.config['primary'], self.config['vmlinux'])
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handlers = linux.LinuxUtilities.generate_kernel_handler_info(self.context, self.config['primary'],
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self.config['vmlinux'], modules)
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try:
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knl_addr = vmlinux.object_from_symbol("keyboard_notifier_list")
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except exceptions.SymbolError:
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knl_addr = None
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if not knl_addr:
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raise TypeError(
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"This plugin requires the keyboard_notifier_list structure. "
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"This structure is not present in the supplied symbol table. "
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"This means you are either analyzing an unsupported kernel version or that your symbol table is corrupt."
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)
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knl = vmlinux.object(object_type = "atomic_notifier_head", offset = knl_addr.vol.offset)
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for call_back in linux.LinuxUtilities.walk_internal_list(vmlinux, "notifier_block", "next", knl.head):
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call_addr = call_back.notifier_call
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module_name, symbol_name = linux.LinuxUtilities.lookup_module_address(self.context, handlers, call_addr)
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yield (0, [format_hints.Hex(call_addr), module_name, symbol_name])
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def run(self):
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return renderers.TreeGrid([("Address", format_hints.Hex), ("Module", str), ("Symbol", str)], self._generator())
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