Windows FileScan: Add physical offset optional requirement

This adds an optional boolean requirement that will allow the plugin to
return physical offsets as an alternative to virtual offsets.

volatility3/framework/plugins/windows/filescan.py

@@ -4,7 +4,7 @@
 
 from typing import Iterable
 
-from volatility3.framework import renderers, interfaces, exceptions
+from volatility3.framework import exceptions, interfaces, layers, renderers
 from volatility3.framework.configuration import requirements
 from volatility3.framework.renderers import format_hints
 from volatility3.plugins.windows import poolscanner
@@ -14,7 +14,7 @@ class FileScan(interfaces.plugins.PluginInterface):
     """Scans for file objects present in a particular windows memory image."""
 
     _required_framework_version = (2, 0, 0)
-    _version = (1, 0, 1)
+    _version = (1, 1, 1)
 
     @classmethod
     def get_requirements(cls):
@@ -27,6 +27,12 @@ class FileScan(interfaces.plugins.PluginInterface):
             requirements.PluginRequirement(
                 name="poolscanner", plugin=poolscanner.PoolScanner, version=(1, 0, 0)
             ),
+            requirements.BooleanRequirement(
+                name="physical",
+                description="Display physical offset instead of virtual",
+                default=False,
+                optional=True,
+            ),
         ]
 
     @classmethod
@@ -60,6 +66,13 @@ class FileScan(interfaces.plugins.PluginInterface):
     def _generator(self):
         kernel = self.context.modules[self.config["kernel"]]
 
+        if self.config["physical"]:
+            physical_layer = self.context.layers[kernel.layer_name]
+            if not isinstance(physical_layer, layers.intel.Intel):
+                raise TypeError("Primary layer is not an intel layer")
+        else:
+            physical_layer = None
+
         for fileobj in self.scan_files(
             self.context, kernel.layer_name, kernel.symbol_table_name
         ):
@@ -68,7 +81,14 @@ class FileScan(interfaces.plugins.PluginInterface):
             except exceptions.InvalidAddressException:
                 continue
 
-            yield (0, (format_hints.Hex(fileobj.vol.offset), file_name))
+            if physical_layer:
+                (_, _, offset, _, _) = list(
+                    physical_layer.mapping(offset=fileobj.vol.offset, length=0)
+                )[0]
+            else:
+                offset = fileobj.vol.offset
+
+            yield (0, (format_hints.Hex(offset), file_name))
 
     def run(self):
         return renderers.TreeGrid(