diff --git a/tools/objdiff.py b/tools/objdiff.py
new file mode 100644
index 00000000..1e6ec65d
--- /dev/null
+++ b/tools/objdiff.py
@@ -0,0 +1,78 @@
+import argparse
+from pathlib import Path
+import os
+import json
+
+parser = argparse.ArgumentParser(description='Generates objdiff.json for configuring objdiff')
+parser.add_argument('region', help='Game region, defaults to EUR', default='EUR')
+
+args = parser.parse_args()
+
+tools_dir = Path(os.path.dirname(os.path.realpath(__file__)))
+root_dir = tools_dir.parent
+config_path = root_dir / 'objdiff.json'
+src_dir = root_dir / 'src'
+asm_dir = root_dir / 'asm'
+
+
+def find_asm_path(src_path: Path) -> Path | None:
+    first_dir = src_path.parents[-2]
+    subdirs = src_path.relative_to(first_dir)
+    if first_dir.name == 'Main':
+        asm_dir = 'main'
+    elif first_dir.name == 'ITCM':
+        asm_dir = 'itcm'
+    elif first_dir.name == 'DTCM':
+        asm_dir = 'dtcm'
+    else:
+        try: ov_num = int(first_dir.name[:2], 10)
+        except: return None
+        asm_dir = f'ov{ov_num:02d}'
+
+    file_name, _ = src_path.name.rsplit('.', 1)
+    asm_file = file_name + '.s'
+    asm_path: Path = asm_dir / subdirs.parent / asm_file
+    return asm_path
+
+
+def get_build_path(path: Path) -> Path:
+    region = args.region.lower()
+    return Path('build') / region / path.parent / (path.name + '.o')
+
+
+config = dict()
+config["custom_make"] = "make"
+config["custom_args"] = [
+    f"REGION={args.region}"
+]
+config["build_target"] = True
+config["watch_patterns"] = [
+    "*.c",
+    "*.cpp",
+    "*.h",
+    "*.hpp",
+    "*.s"
+]
+config["objects"] = []
+
+for (root, dirs, files) in os.walk(src_dir):
+    for file in files:
+        if not file.endswith('.cpp') and not file.endswith('.c'): continue
+        src_path = Path(f'{root}/{file}')
+        src_path = src_path.relative_to(src_dir)
+        asm_path = find_asm_path(src_path)
+
+        if asm_path: asm_path = 'asm' / asm_path
+
+        name, _ = str(src_path).rsplit('.', 1)
+
+        obj = dict()
+        obj["name"] = name
+        if asm_path.exists(): obj["target_path"] = str(get_build_path(asm_path))
+        obj["base_path"] = str(get_build_path('src' / src_path))
+        obj["reverse_fn_order"] = False
+
+        config["objects"].append(obj)
+
+with open(config_path, 'w') as f:
+    f.write(json.dumps(config, indent=4))