minor improvments

volatility3/framework/interfaces/objects.py

@@ -115,7 +115,15 @@ class ObjectInterface(metaclass = abc.ABCMeta):
         mask = context.layers[object_info.layer_name].address_mask
         normalized_offset = object_info.offset & mask
 
-        self._vol = collections.ChainMap({}, {'type_name': type_name, 'offset': normalized_offset}, object_info, kwargs)
+        vol_info_dict = {'type_name': type_name, 'offset': normalized_offset}
+        if constants.BANG in type_name:
+            table_name, struct_name = type_name.split(constants.BANG)
+            vol_info_dict["table_name"] = table_name
+            vol_info_dict["short_name"] = struct_name
+        else:
+            vol_info_dict["short_name"] = type_name
+        
+        self._vol = collections.ChainMap({}, vol_info_dict, object_info, kwargs)
         self._context = context
 
     def __getattr__(self, attr: str) -> Any:
@@ -142,7 +150,7 @@ class ObjectInterface(metaclass = abc.ABCMeta):
         """
         if constants.BANG not in self.vol.type_name:
             raise ValueError(f"Unable to determine table for symbol: {self.vol.type_name}")
-        table_name = self.vol.type_name[:self.vol.type_name.index(constants.BANG)]
+        table_name = self.vol.table_name
         if table_name not in self._context.symbol_space:
             raise KeyError(f"Symbol table not found in context's symbol_space for symbol: {self.vol.type_name}")
         return table_name
@@ -156,7 +164,7 @@ class ObjectInterface(metaclass = abc.ABCMeta):
         """
         # TODO: Carefully consider the implications of casting and how it should work
         if constants.BANG not in new_type_name:
-            symbol_table = self.vol['type_name'].split(constants.BANG)[0]
+            symbol_table = self.get_symbol_table_name()
             new_type_name = symbol_table + constants.BANG + new_type_name
         object_template = self._context.symbol_space.get_type(new_type_name)
         object_template = object_template.clone()
@@ -169,6 +177,11 @@ class ObjectInterface(metaclass = abc.ABCMeta):
                                         size = object_template.size)
         return object_template(context = self._context, object_info = object_info)
 
+    def at_layer(self, new_layer_name) -> 'ObjectInterface':
+        """Returns the same object casted at a different layer.
+        """
+        return self._context.object(self.vol.type_name, offset=self.vol.offset, layer_name=new_layer_name)
+
     def has_member(self, member_name: str) -> bool:
         """Returns whether the object would contain a member called
         member_name.

volatility3/framework/interfaces/symbols.py

@@ -167,6 +167,20 @@ class BaseSymbolTableInterface:
         """
         raise NotImplementedError("Abstract method set_type_class not implemented yet.")
 
+    def try_set_type_class(self, name: str, clazz: Type[objects.ObjectInterface]) -> bool:
+        """Calls the set_type_class function but does not throw an exception.
+        Returns whether setting the type class was successfull.
+        Args:
+            name: The name of the type to override the class for
+            clazz: The actual class to override for the provided type name
+        """
+        try:
+            self.set_type_class(name, clazz)
+            
+            return True
+        except ValueError:
+            return False
+
     def get_type_class(self, name: str) -> Type[objects.ObjectInterface]:
         """Returns the class associated with a Symbol type."""
         raise NotImplementedError("Abstract method get_type_class not implemented yet.")

volatility3/framework/symbols/windows/__init__.py

@@ -4,7 +4,7 @@
 
 from volatility3.framework.symbols import intermed
 from volatility3.framework.symbols.windows import extensions
-from volatility3.framework.symbols.windows.extensions import registry, pool
+from volatility3.framework.symbols.windows.extensions import registry, pool, pe
 
 
 class WindowsKernelIntermedSymbols(intermed.IntermediateSymbolTable):
@@ -38,6 +38,11 @@ class WindowsKernelIntermedSymbols(intermed.IntermediateSymbolTable):
         self.set_type_class('_SHARED_CACHE_MAP', extensions.SHARED_CACHE_MAP)
         self.set_type_class('_VACB', extensions.VACB)
         self.set_type_class('_POOL_TRACKER_BIG_PAGES', pool.POOL_TRACKER_BIG_PAGES)
+        self.set_type_class('_IMAGE_DOS_HEADER', pe.IMAGE_DOS_HEADER)
+        self.set_type_class('_IMAGE_NT_HEADERS', pe.IMAGE_NT_HEADERS)
+        
+        # Might not exist in 32-bit operating systems.
+        self.try_set_type_class('_IMAGE_NT_HEADERS64', pe.IMAGE_NT_HEADERS)
 
         # This doesn't exist in very specific versions of windows
         try:
@@ -49,19 +54,11 @@ class WindowsKernelIntermedSymbols(intermed.IntermediateSymbolTable):
             pass
 
         # these don't exist in windows XP
-        try:
-            self.set_type_class('_MMADDRESS_NODE', extensions.MMVAD_SHORT)
-        except ValueError:
-            pass
-
+        self.try_set_type_class('_MMADDRESS_NODE', extensions.MMVAD_SHORT)
+        
         # these were introduced starting in windows 8
-        try:
-            self.set_type_class('_MM_AVL_NODE', extensions.MMVAD_SHORT)
-        except ValueError:
-            pass
-
+        self.try_set_type_class('_MM_AVL_NODE', extensions.MMVAD_SHORT)
+        
         # these were introduced starting in windows 7
-        try:
-            self.set_type_class('_RTL_BALANCED_NODE', extensions.MMVAD_SHORT)
-        except ValueError:
-            pass
+        self.try_set_type_class('_RTL_BALANCED_NODE', extensions.MMVAD_SHORT)
+        

volatility3/framework/symbols/windows/extensions/__init__.py

@@ -574,13 +574,9 @@ class EPROCESS(generic.GenericIntelProcess, pool.ExecutiveObject):
         proc_layer = self._context.layers[proc_layer_name]
         if not proc_layer.is_valid(self.Peb):
             raise exceptions.InvalidAddressException(proc_layer_name, self.Peb,
-                                                     f"Invalid address at {self.Peb:0x}")
+                                                     f"Invalid Peb address at {self.Peb:0x}")
 
-        sym_table = self.vol.type_name.split(constants.BANG)[0]
-        peb = self._context.object(f"{sym_table}{constants.BANG}_PEB",
-                                   layer_name = proc_layer_name,
-                                   offset = self.Peb)
-        return peb
+        return self.at_layer(proc_layer_name).Peb
 
     def load_order_modules(self) -> Iterable[interfaces.objects.ObjectInterface]:
         """Generator for DLLs in the order that they were loaded."""