diff --git a/README.md b/README.md
index 418d276..5f21717 100644
--- a/README.md
+++ b/README.md
@@ -2,9 +2,7 @@
 
 ![GitHub tag (latest by date)](https://img.shields.io/github/v/tag/yurisizuku/reversetool?color=green&label=ReverseTool)![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/YuriSizuku/ReverseTool/build_wintools.yml?label=build_wintools)  
 
-Some libraries (single header) for my reverse projects.  
-In `project`,  `Makefile` for `gcc` (llvm-mingw or mingw-w64), `tcc` (not support inline) and `sln` for `msvc`.  
-
+🍀 Libraries (single header file) for my reverse projects.  
 Scripts for localization are moved to [LocalizationTool](https://github.com/YuriSizuku/LocalizationTool).  
 
 Projects based on this repo:  
@@ -13,13 +11,18 @@ Projects based on this repo:
 - [MiniVFS](https://github.com/YuriSizuku/MiniVFS)
 - [GalgameReverse](https://github.com/YuriSizuku/GalgameReverse)  
 
-## Windows scripts and libraries
+## Components
+
+### cross platform libraries  
+
+- `windllin.py`, staticly inject `dll` to a `exe`  
+- `wincoff.py`, method for parsing `coff` object file  
 
-- `winhook.h`,  single file for dynamic hook functions, such as IAT hook, inline hook  
-- `winpe.h`, single file for parsing windows PE structure, adjust RELOC, ADDRS, or IAT  
-- `windllin.py` , pre inject  `dll` to a `exe`  
-- `wincoff.py`, some method for generating shellcode, such as parsing `coff` object file  
+### windows platform libraries
 
-## Windows Useful tools
+In `project`,  `Makefile` for `gcc` (llvm-mingw or mingw-w64), `tcc` (not support inline) and `sln` for `msvc`.  All of them are compatible for `win xp` and above.  
 
-- `winloader.c`, a tool to start a exe with a `dll` injected, see [Release](https://github.com/YuriSizuku/ReverseUtil/releases)  
+- `winhook.h`,  single header file for dynamic hook functions, such as IAT hook, inline hook  
+- `winpe.h`, single header file for parsing windows PE structure, adjust RELOC, ADDRS, or IAT  
+- `windyn.h`, single header file for dynamic binding windows system api without IAT.  
+- `winloader.c`, start a exe with a `dll` injected, see [Release](https://github.com/YuriSizuku/ReverseUtil/releases)  
diff --git a/project/windll_winhook/Makefile b/project/windll_winhook/Makefile
index 8c8e6d2..86130b7 100644
--- a/project/windll_winhook/Makefile
+++ b/project/windll_winhook/Makefile
@@ -14,7 +14,9 @@ CFLAGS:=-fPIC -std=c99 \
 	-ffunction-sections -fdata-sections
 LDFLAGS:=-Wl,--enable-stdcall-fixup \
 		 -Wl,--kill-at \
-		 -Wl,--gc-sections
+		 -Wl,--gc-sections \
+		 -D_WIN32_WINNT=0X0400 \
+		 -Wl,--subsystem,console:4.0 # compatible for xp
 
 # build config
 ifneq (,$(findstring 64, $(BUILD_TYPE)))
diff --git a/project/windll_winpe/Makefile b/project/windll_winpe/Makefile
index 2cfbcc3..d2e1bad 100644
--- a/project/windll_winpe/Makefile
+++ b/project/windll_winpe/Makefile
@@ -14,7 +14,9 @@ CFLAGS:=-fPIC -std=gnu99 \
 	-ffunction-sections -fdata-sections
 LDFLAGS:=-Wl,--enable-stdcall-fixup \
 		 -Wl,--kill-at \
-		 -Wl,--gc-sections
+		 -Wl,--gc-sections \
+		 -D_WIN32_WINNT=0X0400 \
+		 -Wl,--subsystem,console:4.0 # compatible for xp
 
 # build config
 ifneq (,$(findstring 64, $(BUILD_TYPE)))
diff --git a/project/winexe_winloader/Makefile b/project/winexe_winloader/Makefile
index 648efb7..aa4db58 100644
--- a/project/winexe_winloader/Makefile
+++ b/project/winexe_winloader/Makefile
@@ -14,7 +14,9 @@ CFLAGS:=-fPIC -std=c99 \
 	-ffunction-sections -fdata-sections
 LDFLAGS:=-Wl,--enable-stdcall-fixup \
 		 -Wl,--kill-at \
-		 -Wl,--gc-sections
+		 -Wl,--gc-sections \
+		 -D_WIN32_WINNT=0X0400 \
+		 -Wl,--subsystem,console:4.0 # compatible for xp
 
 # build config
 ifneq (,$(findstring 64, $(BUILD_TYPE)))
diff --git a/src/winpe.h b/src/winpe.h
index b68e884..dda12a4 100644
--- a/src/winpe.h
+++ b/src/winpe.h
@@ -197,7 +197,12 @@ void* winpe_findkernel32();
 */
 WINPE_API
 void* STDCALL winpe_findmoduleaex(PPEB peb, const char *modulename);
-#define winpe_findmodulea(modulename) winpe_findmoduleaex(NULL, modulename)
+
+WINPE_API
+void* STDCALL winpe_findmodulea(const char *modulename)
+{
+    return winpe_findmoduleaex(NULL, modulename);
+}
 
 /**
  * @return LoadLibraryA func addr
@@ -337,10 +342,15 @@ size_t STDCALL winpe_appendsecth(void *mempe, PIMAGE_SECTION_HEADER psecth);
 #endif
 
 #include <stdio.h>
-#include <assert.h>
 #include <windows.h>
 #include <winternl.h>
 
+#ifdef _DEBUG
+#include <assert.h>
+#else
+#define assert(x)
+#endif
+
 // util INLINE functions
 INLINE size_t _winpeinl_strlen(const char* str1)
 {