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opt: use il2cpp api to get LuaScriptMgr.get_Inst func

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This commit is contained in:
LA_DI_DA
2025-03-21 17:33:03 +08:00
parent cfc14419a7
commit 56c6e4ff1c
3 changed files with 66 additions and 21 deletions
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7
blcrack/cracker/CMakeLists.txt
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@@ -21,10 +21,3 @@ target_compile_definitions(${CRACKER}
PRIVATE ${SPDLOG_DEFINES} SPDLOG_ACTIVE_LEVEL=SPDLOG_LEVEL_TRACE
PRIVATE SOL_USE_LUA_HPP
)
if (CMAKE_ANDROID_ARCH_ABI STREQUAL "x86")
target_compile_definitions(${CRACKER} PRIVATE ARCH_X86)
elseif (CMAKE_ANDROID_ARCH_ABI STREQUAL "armeabi-v7a")
target_compile_definitions(${CRACKER} PRIVATE ARCH_ARMEABI_V7A)
elseif (CMAKE_ANDROID_ARCH_ABI STREQUAL "arm64-v8a")
target_compile_definitions(${CRACKER} PRIVATE ARCH_ARM64_V8A)
endif ()

48
blcrack/cracker/il2cpp.hpp
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@@ -89,15 +89,43 @@ struct LuaScriptMgr_o {
using LuaScriptMgr_get_Inst = struct LuaScriptMgr_o*(*)();
#if defined(ARCH_X86)
#define LuaScriptMgr_get_Inst_OFFSET 0x1076B15
#elif defined(ARCH_ARM64_V8A)
#define LuaScriptMgr_get_Inst_OFFSET 0x14BF998
#elif defined(ARCH_ARMEABI_V7A)
#define LuaScriptMgr_get_Inst_OFFSET 0xFE8894
#else
#warning "No architecture defined for il2cpp.hpp, assuming x86"
#define LuaScriptMgr_get_Inst_OFFSET 0x1076B15
#endif
using Il2CppDomain = void;
using Il2CppAssembly = void;
using Il2CppImage = void;
using Il2CppClass = void;
struct MethodInfo {
void* methodPointer; // Il2CppMethodPointer
void* invoker_method; // InvokerMethod
const char* name;
void* klass; // Il2CppClass*
void* return_type; // const Il2CppType*
void* parameters; // const ParameterInfo*
union {
void* rgctx_data; // const Il2CppRGCTXData*
void* methodDefinition; // const Il2CppMethodDefinition*
};
union {
void* genericMethod; // const Il2CppGenericMethod*
void* genericContainer; // const Il2CppGenericContainer*
};
uint32_t token;
uint16_t flags;
uint16_t iflags;
uint16_t slot;
uint8_t parameters_count;
uint8_t is_generic : 1;
uint8_t is_inflated : 1;
uint8_t wrapper_type : 1;
uint8_t is_marshaled_from_native : 1;
};
extern "C" {
Il2CppDomain* il2cpp_domain_get();
Il2CppAssembly** il2cpp_domain_get_assemblies(Il2CppDomain* domain, size_t* size);
Il2CppImage* il2cpp_assembly_get_image(Il2CppAssembly *assembly);
Il2CppClass* il2cpp_class_from_name(Il2CppImage* image, const char* namespaze, const char *name);
MethodInfo* il2cpp_class_get_method_from_name(Il2CppClass *klass, const char* name, int argsCount);
}
#endif //IL2CPPSTRUCT_HPP

30
blcrack/cracker/utils.cpp
View File

@@ -32,10 +32,34 @@ void* Utils::get_so_base_address(const std::string& name) {
return nullptr;
}
lua_State* Utils::get_lua_state() {
void* il2cpp_base_addr = get_so_base_address("libil2cpp.so");
static LuaScriptMgr_get_Inst get_lua_script_mgr_get_inst() {
Il2CppDomain* domain = il2cpp_domain_get();
size_t assembly_count = 0;
Il2CppAssembly** assemblies = il2cpp_domain_get_assemblies(domain, &assembly_count);
LuaScriptMgr_get_Inst get_instance = reinterpret_cast<LuaScriptMgr_get_Inst>(PTR_ADD(il2cpp_base_addr, LuaScriptMgr_get_Inst_OFFSET));
Il2CppClass* cls = nullptr;
for (size_t i = 0; i < assembly_count; ++i) {
Il2CppImage* image = il2cpp_assembly_get_image(assemblies[i]);
Il2CppClass* klass = il2cpp_class_from_name(image, "", "LuaScriptMgr");
if (klass != nullptr) {
cls = klass;
break;
}
}
if (cls != nullptr) {
MethodInfo* method_info = il2cpp_class_get_method_from_name(cls, "get_Inst", 0);
if (method_info != nullptr) {
auto method = reinterpret_cast<LuaScriptMgr_get_Inst>(method_info->methodPointer);
SPDLOG_INFO("Found LuaScriptMgr.get_Inst at {}", (void*)method_info->methodPointer);
return method;
}
}
SPDLOG_ERROR("Failed to get LuaScriptMgr.get_Inst");
throw std::runtime_error("Failed to get LuaScriptMgr.get_Inst");
}
lua_State* Utils::get_lua_state() {
LuaScriptMgr_get_Inst get_instance = get_lua_script_mgr_get_inst();
struct LuaScriptMgr_o* lua_script_mgr = get_instance();
LuaInterface_LuaState_o* luaState = nullptr;