Unity_add_HOOK
Unity_add_HOOK
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DDWSdwqdq
hentaitaku
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54be169714
commit
36201b9ff3
@ -51,9 +51,132 @@ namespace Engine
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}
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return found;
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}
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//MonoImage* mono_assembly_get_image(MonoAssembly* assembly)：获取程序集的镜像。后面几乎所有的操作都会以MonoImage* 为第一个参数。
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static uintptr_t (*mono_assembly_get_image)(uintptr_t) = NULL;
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// const char* mono_image_get_name(MonoImage * image) :获取程序集名。我们用它判断哪个程序集是我们的目标
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static char* (*mono_image_get_name)(uintptr_t) = NULL;
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//MonoClass* mono_class_from_name (MonoImage *image, const char* name_space, const char *name):通过类名获取类(非实例)。
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static uintptr_t(*mono_class_from_name)(uintptr_t, char*, char*) = NULL;
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//MonoVTable* mono_class_vtable (MonoDomain *domain, MonoClass *klass)：获取vtable，我们通过它可以找到静态字段的起始地址。
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static uintptr_t(*mono_class_vtable)(uintptr_t, uintptr_t) = NULL;
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//void* mono_vtable_get_static_field_data (MonoVTable *vt)：获取静态字段的起始地址。
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static void* (*mono_vtable_get_static_field_data)(uintptr_t) = NULL;
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//MonoMethod* mono_class_get_method_from_name (MonoClass *klass, const char *name, int param_count):获取方法(非native code地址)。
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//其中param_count是参数数量，可以输入-1来省略。此函数无法获取重载的方法，但对于我们来说足够了。
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static uintptr_t(*mono_class_get_method_from_name)(uintptr_t, char*,int) = NULL;
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//获取属性。用它可以进一步获得属性的getter和setter。
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//MonoProperty* mono_class_get_property_from_name(MonoClass* klass, const char* name)：
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static uintptr_t(*mono_class_get_property_from_name)(uintptr_t, char*) = NULL;
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//获取属性的getter和setter。
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//MonoMethod* mono_property_get_get_method(MonoProperty* prop) 与 MonoMethod* mono_property_get_set_method(MonoProperty* prop)：
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static uintptr_t(*mono_property_get_set_method)(uintptr_t) = NULL;
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// （不安全）返回方法的地址，如果方法尚未编译，则JIT开始编译。这个是解决问题的核心方法。 gpointer mono_compile_method (MonoMethod *method):
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static uint64_t* (*mono_compile_method)(uintptr_t) = NULL;
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//获取函数的非托管块指针 (native) gpointer mono_method_get_unmanaged_thunk (MonoMethod *method)
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//使用这个来获取native代码 方法尚未编译，会执行编译 并提取 x86版本可能使用的是__stdcall
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static uint64_t* (*mono_method_get_unmanaged_thunk)(uintptr_t) = NULL;
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//MonoDomain* mono_get_root_domain (void) ：获取主作用域。用于附加线程以及获取静态字段的地址。
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static MonoDomain* (*mono_get_root_domain)() = NULL;
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//void mono_thread_attach (MonoDomain*)：附加到进程的主线程。这个操作是必须的。
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static void (*mono_thread_attach)(MonoDomain*) = NULL;
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//MonoAssembly* assembly，而后者则是void* user_data
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int getV8StringLength(uintptr_t stack, uintptr_t data) {
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int len = *(int*)(data - 4);
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int checkLength = len > 0 && len < PIPE_BUFFER_SIZE ? len : 0;
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//检查是否为错误的unicode字符
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for (size_t i = 0; i < checkLength; i++)
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{
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if (*(WORD*)(data + i * 2) == 0x0)
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return 0;
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}
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return checkLength * 2;
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}
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void MonoCallBack(uintptr_t assembly, void* userData) {
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uintptr_t mono_property = NULL;
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uintptr_t image=mono_assembly_get_image(assembly);
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// TMP_Text TextMeshProUGUI
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auto mono_tmp_class=mono_class_from_name(image, "TMPro", "TMP_Text");
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auto mono_ugui_class = mono_class_from_name(image, "UnityEngine.UI", "Text");
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auto mono_ngui_class = mono_class_from_name(image, "", "UILabel");
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if (!mono_tmp_class && !mono_ugui_class && !mono_ngui_class)
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return;
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if (mono_tmp_class) {
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mono_property = mono_class_get_property_from_name(mono_tmp_class, "text");
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}
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else if (mono_ugui_class)
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{
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mono_property = mono_class_get_property_from_name(mono_ugui_class, "text");
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}
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else if (mono_ngui_class) {
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mono_property = mono_class_get_property_from_name(mono_ngui_class, "text");
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}
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if (mono_property == NULL)
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return;
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auto mono_set_method= mono_property_get_set_method(mono_property);
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//注意必须调用mono_thread_attach 附加到主domain 才能调用 mono_method_get_unmanaged_thunk mono_compile_method 或mono_runtime_invoke
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mono_thread_attach(mono_get_root_domain());
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uint64_t* method_pointer= mono_compile_method(mono_set_method);
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if (method_pointer) {
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HookParam hp = {};
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hp.type = USING_STRING | USING_UNICODE;
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hp.address = (uint64_t)method_pointer;
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hp.offset = -0x28; // rdx
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//hp.index = 0;
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hp.padding = 0x14;
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if (mono_tmp_class) {
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ConsoleOutput("Mono_X64,Insert: TextMeshProUGUI_set_text Hook BY:IOV");
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hp.length_fun = getV8StringLength;
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NewHook(hp, "TextMeshProUGUI_set_text");
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}
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else if (mono_ugui_class)
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{
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ConsoleOutput("Mono_X64,Insert: UGUI_set_text Hook BY:IOV");
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hp.length_fun = getV8StringLength;
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NewHook(hp, "UGUI_set_text");
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}
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else if (mono_ngui_class)
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{
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ConsoleOutput("Mono_X64,Insert: NGUI_set_text Hook BY:IOV");
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hp.length_fun = getV8StringLength;
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NewHook(hp, "NGUI_set_text");
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}
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}
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}
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bool InsertMonoHooksByAssembly(HMODULE module) {
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//void mono_assembly_foreach (GFunc func, gpointer user_data)
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//遍历程序集。用于获取目标程序集的指针。其中的func 是一个回调函数，要自己写。它有两个参数，前者就是MonoAssembly*，而后者则是user_data
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static auto mono_assembly_foreach = (void (*)(void (*)(uintptr_t, void*), uintptr_t))GetProcAddress(module, "mono_assembly_foreach");
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mono_assembly_get_image= (uintptr_t(*)(uintptr_t))GetProcAddress(module, "mono_assembly_get_image");
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mono_image_get_name = (char* (*)(uintptr_t))GetProcAddress(module, "mono_image_get_name");
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mono_class_from_name = (uintptr_t(*)(uintptr_t, char*, char*))GetProcAddress(module, "mono_class_from_name");
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mono_class_get_property_from_name = (uintptr_t(*)(uintptr_t, char*))GetProcAddress(module, "mono_class_get_property_from_name");
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mono_property_get_set_method = (uintptr_t(*)(uintptr_t))GetProcAddress(module, "mono_property_get_set_method");
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mono_compile_method = (uint64_t * (*)(uintptr_t))GetProcAddress(module, "mono_compile_method");
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//mono_method_get_unmanaged_thunk= (uint64_t * (*)(uintptr_t))GetProcAddress(module, "mono_method_get_unmanaged_thunk");
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mono_get_root_domain = (MonoDomain * (*)())GetProcAddress(module, "mono_get_root_domain");
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mono_thread_attach = (void (*)(MonoDomain*))GetProcAddress(module, "mono_thread_attach");
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if (mono_assembly_foreach && mono_assembly_get_image && mono_image_get_name && mono_class_from_name &&
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mono_class_get_property_from_name && mono_property_get_set_method && mono_compile_method &&
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mono_get_root_domain && mono_thread_attach) {
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mono_assembly_foreach(MonoCallBack, NULL);
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return true;
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}
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else
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{
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return false;
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}
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}
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bool InsertMonoHooks(HMODULE module)
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{
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return InsertMonoHooksByAssembly(module);
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auto SpecialHookMonoString = nullptr;
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static HMODULE mono = module;
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bool ret = false;
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