diff --git a/lib/hkStubs/CMakeLists.txt b/lib/hkStubs/CMakeLists.txt
index 32952a7e..4270759f 100644
--- a/lib/hkStubs/CMakeLists.txt
+++ b/lib/hkStubs/CMakeLists.txt
@@ -37,6 +37,8 @@ add_library(hkStubs OBJECT
   Havok/Common/Base/Types/hkRefVariant.h
   Havok/Common/Base/Types/Geometry/Aabb/hkAabb.h
 
+  Havok/Common/Serialize/Resource/hkResource.h
+  Havok/Common/Serialize/Util/hkNativePackfileUtils.h
   Havok/Common/Serialize/Util/hkRootLevelContainer.h
 
   Havok/Geometry/Collide/Shapes/hkcdShape.h
diff --git a/lib/hkStubs/Havok/Common/Serialize/Resource/hkResource.h b/lib/hkStubs/Havok/Common/Serialize/Resource/hkResource.h
new file mode 100644
index 00000000..df647006
--- /dev/null
+++ b/lib/hkStubs/Havok/Common/Serialize/Resource/hkResource.h
@@ -0,0 +1,44 @@
+#pragma once
+
+#include <Havok/Common/Base/hkBase.h>
+
+class hkTypeInfoRegistry;
+
+class hkResource : public hkReferencedObject {
+public:
+    HK_DECLARE_CLASS_ALLOCATOR(hkResource)
+
+    struct Export {
+        HK_DECLARE_CLASS_ALLOCATOR(Export)
+
+        const char* name;
+        void* data;
+    };
+
+    struct Import {
+        HK_DECLARE_CLASS_ALLOCATOR(Import)
+
+        const char* name;
+        void** location;
+    };
+
+    virtual const char* getName() const = 0;
+
+    ~hkResource() override = default;
+
+    virtual void callDestructors() {}
+
+    virtual void getImportsExports(hkArray<Import>& impOut, hkArray<Export>& expOut) const = 0;
+
+    virtual void* getContentsPointer(const char* typeName,
+                                     const hkTypeInfoRegistry* typeRegistry) const = 0;
+
+    template <typename T>
+    inline T* getContentsWithRegistry(const hkTypeInfoRegistry* typeRegistry) const;
+
+    template <typename T>
+    inline T* getContents() const;
+
+    /// Return the top level object type name.
+    virtual const char* getContentsTypeName() const = 0;
+};
diff --git a/lib/hkStubs/Havok/Common/Serialize/Util/hkNativePackfileUtils.h b/lib/hkStubs/Havok/Common/Serialize/Util/hkNativePackfileUtils.h
new file mode 100644
index 00000000..d4f35eb1
--- /dev/null
+++ b/lib/hkStubs/Havok/Common/Serialize/Util/hkNativePackfileUtils.h
@@ -0,0 +1,35 @@
+#pragma once
+
+#include <Havok/Common/Base/hkBase.h>
+#include <Havok/Common/Serialize/Resource/hkResource.h>
+
+class hkTypeInfoRegistry;
+
+namespace hkNativePackfileUtils {
+
+hkResource* load(const void* packfileData, int dataSize,
+                 const hkTypeInfoRegistry* userRegistry = nullptr);
+
+int getRequiredBufferSize(const void* packfileData, int dataSize);
+
+void* load(const void* packfileData, int dataSize, void* outBuffer, int outBufferSize,
+           const hkTypeInfoRegistry* userRegistry = nullptr);
+
+/// @warning A buffer that has been loaded in place cannot be loaded more than once!
+void* loadInPlace(void* packfileData, int dataSize,
+                  const hkTypeInfoRegistry* userRegistry = nullptr, const char** errOut = nullptr);
+
+const char* getContentsClassName(const void* packfileData, int dataSize);
+
+void getImportsExports(const void* loadedBuffer, hkArray<hkResource::Export>& expOut,
+                       hkArray<hkResource::Import>& impOut);
+
+void getImportsExportsInPlace(const void* loadedBuffer, hkArray<hkResource::Export>& expOut,
+                              hkArray<hkResource::Import>& impOut);
+
+void unload(void* loadedBuffer, int bufferSize);
+void unloadInPlace(void* loadedBuffer, int bufferSize);
+
+hkResult validatePackfileHeader(const void* packfileData, const char** errOut);
+
+}  // namespace hkNativePackfileUtils