feat(launcher): build executable to require administrator by default

Add rustc-link-arg directives in build.rs to embed a UAC manifest:
- /MANIFEST:EMBED
- /MANIFESTUAC:level='requireAdministrator'

README.md

@@ -1,4 +1,7 @@
-redirect HTTP requests & remove censorship!
+features:
+- redirect HTTP requests
+- remove censorship
+- replace AccountRSAKey into custom public key (by default, compatible with [hoyo-sdk by xeondev](https://git.xeondev.com/reversedrooms/hoyo-sdk))
 
 currently, this has only been tested on CNBETAWin3.1.53 and may require an update for future versions.
 

hkrpg/sdk_public_key.xml

@@ -0,0 +1 @@
+<RSAKeyValue><Exponent>AQAB</Exponent><Modulus>hEegnKISgDas5VTuRBUlixB+bvmPvXKa3kVO22UEZjPGMUFLmIl3DhH+dsZo7qJn/GfJCUkP1FA0MJ5Bj8PX8IatLJKIJ9dMCNdnAlkXTlMg86QQAhHZN83vP4swj5ILcrGNKl3YAZ49fvzo7nheuTt0/40f0HkHdNa1dUHECBs=</Modulus></RSAKeyValue>

hkrpg/src/addr.rs

@@ -2,25 +2,24 @@ use std::sync::{LazyLock, OnceLock};
 
 use windows::{Win32::System::LibraryLoader::GetModuleHandleA, core::s};
 
-use crate::util::{scan_il2cpp_section, scan_unity_player_section};
+use crate::util::scan_il2cpp_section;
 
-const PTR_TO_STRING_ANSI: &str = "E8 ? ? ? ? 48 ? ? 48 85 C0 75 ? 48 8D 4C 24";
-const MAKE_INITIAL_URL: &str = "55 41 56 56 57 53 48 83 EC ? 48 8D 6C 24 ? 48 C7 45 ? ? ? ? ? 48 89 D6 48 89 CF E8 ? ? ? ? 84 C0"; // TODO
-const SET_ELEVATION_DITHER: &str = "E9 ? ? ? ? 0F 28 74 24 ? 48 83 C4 ? 5B 5F 5E 41 5E 41 5F C3 31 F6"; // TODO
-const SET_DISTANCE_DITHER: &str = "E8 ? ? ? ? 49 8B 46 ? 48 85 C0 0F 84 ? ? ? ? 48 8B 4D"; // TODO
-const SET_DITHER_ALPHA: &str = "56 57 48 83 EC ? 0F 29 74 24 ? 44 89 C6 0F 28 F1 48 89 CF 80 3D ? ? ? ? ? 75 ? 80 7F"; // TODO
-const SET_DITHER_ALPHA_ANIM: &str = "56 57 55 53 48 83 EC ? 44 0F 29 44 24 ? 0F 29 7C 24 ? 0F 29 74 24 ? 44 0F 28 C3 0F 28 F2 0F 28 F9"; // TODO
-const HK_CHECK1: &str = "55 41 56 56 57 53 48 81 EC 00 01 00 00 48 8D AC 24 80 00 00 00 C7 45 7C 00 00 00 00";
-const HK_CHECK2: &str = "55 41 57 41 56 41 55 41 54 56 57 53 48 81 EC B8 02 00 00";
+const IL2CPP_STRING_NEW_LEN: &str =
+    "E8 ? ? ? ? EB ? 31 C0 48 89 06 48 8B 47 ? 48 89 46 ? F2 0F 10 47";
+const MAKE_INITIAL_URL: &str =
+    "E8 ? ? ? ? 48 89 D9 48 89 C2 E8 ? ? ? ? 48 89 D9 4C 89 FA E8 ? ? ? ? 49 89 5D"; // TODO
+const SET_DITHER: &str = "E8 ? ? ? ? 84 C0 75 ? C7 43";
+const SDK_PUBLIC_KEY_LITERAL: &str =
+    "48 8B 0D ? ? ? ? 4C 89 E2 E8 ? ? ? ? 48 89 C6 48 8B 0D ? ? ? ? E8 ? ? ? ? 48 89 C7 48 8B 0D";
+// const HK_CHECK1: &str = "55 41 56 56 57 53 48 81 EC 00 01 00 00 48 8D AC 24 80 00 00 00 C7 45 7C 00 00 00 00";
+// const HK_CHECK2: &str = "55 41 57 41 56 41 55 41 54 56 57 53 48 81 EC B8 02 00 00";
 
 #[derive(Default)]
 pub struct RVAConfig {
-    pub ptr_to_string_ansi: usize,
+    pub il2cpp_string_new_len: usize,
     pub make_initial_url: usize,
-    pub set_elevation_dither: usize,
-    pub set_distance_dither: usize,
-    pub set_dither_alpha: usize,
-    pub set_dither_alpha_anim: usize,
+    pub set_dither: usize,
+    pub sdk_public_key: usize,
     pub hk_check1: usize,
     pub hk_check2: usize,
 }
@@ -34,22 +33,24 @@ pub fn rva_config() -> &'static mut RVAConfig {
 pub static GAME_ASSEMBLY_BASE: LazyLock<usize> =
     LazyLock::new(|| unsafe { GetModuleHandleA(s!("GameAssembly.dll")).unwrap().0 as usize });
 
-pub static UNITY_PLAYER_BASE: LazyLock<usize> =
-    LazyLock::new(|| unsafe { GetModuleHandleA(s!("UnityPlayer.dll")).unwrap().0 as usize });
+// pub static UNITY_PLAYER_BASE: LazyLock<usize> =
+//     LazyLock::new(|| unsafe { GetModuleHandleA(s!("UnityPlayer.dll")).unwrap().0 as usize });
 
 macro_rules! set_rva {
-    ($config:ident, $field:ident, $scan_fn:ident, $rva_pat:expr, $fallback:expr) => {
+    ($base:ident, $config:ident, $field:ident, $scan_fn:ident, $rva_pat:expr, $fallback:expr) => {
         if let Some(addr) = unsafe { $scan_fn($rva_pat) } {
-            $config.$field = addr - *GAME_ASSEMBLY_BASE;
+            $config.$field = addr;
             println!(
-                "[hkrpg::addr::set_rva] Found relative address for {} -> 0x{:X}",
+                "[hkrpg::addr::set_rva] Found relative address for {} [{}] -> 0x{:X}",
                 stringify!($field),
-                $config.$field
+                stringify!($base),
+                $config.$field - *$base
             );
         } else {
             eprintln!(
-                "[hkrpg::addr::set_rva] Failed to find pattern for {} using {}",
+                "[hkrpg::addr::set_rva] Failed to find pattern for {} [{}] using {}",
                 stringify!($field),
+                stringify!($base),
                 stringify!($scan_fn)
             );
 
@@ -61,17 +62,19 @@ macro_rules! set_rva {
 pub unsafe fn init_rvas() {
     let config = rva_config();
 
-    // ptr_to_string_ansi
+    // il2cpp_string_new_len
     set_rva!(
+        GAME_ASSEMBLY_BASE,
         config,
-        ptr_to_string_ansi,
+        il2cpp_string_new_len,
         scan_il2cpp_section,
-        PTR_TO_STRING_ANSI,
+        IL2CPP_STRING_NEW_LEN,
         0x0
     );
 
     // make_initial_url
     set_rva!(
+        GAME_ASSEMBLY_BASE,
         config,
         make_initial_url,
         scan_il2cpp_section,
@@ -79,39 +82,40 @@ pub unsafe fn init_rvas() {
         0x0
     );
 
-    // set_elevation_dither
+    // set_dither
     set_rva!(
+        GAME_ASSEMBLY_BASE,
         config,
-        set_elevation_dither,
+        set_dither,
         scan_il2cpp_section,
-        SET_ELEVATION_DITHER,
-        0x0
-    );
-    // set_distance_dither
-    set_rva!(
-        config,
-        set_distance_dither,
-        scan_il2cpp_section,
-        SET_DISTANCE_DITHER,
-        0x0
-    );
-    // set_dither_alpha
-    set_rva!(
-        config,
-        set_dither_alpha,
-        scan_il2cpp_section,
-        SET_DITHER_ALPHA,
-        0x0
-    );
-    // set_dither_alpha_anim
-    set_rva!(
-        config,
-        set_dither_alpha_anim,
-        scan_il2cpp_section,
-        SET_DITHER_ALPHA_ANIM,
+        SET_DITHER,
         0x0
     );
 
-    set_rva!(config, hk_check1, scan_unity_player_section, HK_CHECK1, 0x0);
-    set_rva!(config, hk_check2, scan_unity_player_section, HK_CHECK2, 0x0);
+    // sdk_public_key_literal
+    set_rva!(
+        GAME_ASSEMBLY_BASE,
+        config,
+        sdk_public_key,
+        scan_il2cpp_section,
+        SDK_PUBLIC_KEY_LITERAL,
+        0x0
+    )
+
+    // set_rva!(
+    //     UNITY_PLAYER_BASE,
+    //     config,
+    //     hk_check1,
+    //     scan_unity_player_section,
+    //     HK_CHECK1,
+    //     0x0
+    // );
+    // set_rva!(
+    //     UNITY_PLAYER_BASE,
+    //     config,
+    //     hk_check2,
+    //     scan_unity_player_section,
+    //     HK_CHECK2,
+    //     0x0
+    // );
 }

hkrpg/src/il2cpp_string.rs

@@ -1,6 +1,6 @@
 use std::{ffi::CString, fmt::Display};
 
-use crate::addr::{GAME_ASSEMBLY_BASE, rva_config};
+use crate::addr::rva_config;
 
 #[repr(transparent)]
 pub struct Il2cppString(usize);
@@ -15,7 +15,7 @@ impl Il2cppString {
     pub fn new(string: &str) -> Self {
         let func = unsafe {
             std::mem::transmute::<usize, fn(*const u8, usize) -> usize>(
-                *GAME_ASSEMBLY_BASE + rva_config().ptr_to_string_ansi,
+                rva_config().il2cpp_string_new_len,
             )
         };
         let len = string.len();

hkrpg/src/interceptor.rs

@@ -2,13 +2,16 @@ use ilhook::x64::{
     CallbackOption, HookFlags, HookPoint, HookType, Hooker, JmpBackRoutine, RetnRoutine,
 };
 
-#[derive(Default)]
 pub struct Interceptor {
     hooks: Vec<HookPoint>,
 }
 
 type Result<T> = std::result::Result<T, ilhook::HookError>;
 impl Interceptor {
+    pub const fn new() -> Self {
+        Interceptor { hooks: Vec::new() }
+    }
+
     pub fn attach(&mut self, addr: usize, routine: JmpBackRoutine) -> Result<()> {
         let hooker = Hooker::new(
             addr,

hkrpg/src/lib.rs

@@ -3,7 +3,8 @@
 use std::{thread, time::Duration};
 
 use modules::{
-    HkrpgModuleManager, censorship_patch::CensorshipPatch, hk_check::HkCheck, network::Network,
+    HkrpgModuleManager, censorship_patch::CensorshipPatch, crypto::Crypto, hk_check::HkCheck,
+    misc::Misc, network::Network,
 };
 use windows::{
     Win32::System::{Console, LibraryLoader::GetModuleHandleA},
@@ -26,11 +27,17 @@ pub fn main() {
             thread::sleep(Duration::from_millis(200));
         }
 
+        let mut mm1 = HkrpgModuleManager::default();
+        mm1.add::<Misc>();
+        mm1.init()
+            .expect("[hkrpg::main] failed to initialize module (Misc)");
+
         addr::init_rvas();
 
         let mut module_manager = HkrpgModuleManager::default();
         module_manager.add::<HkCheck>();
         module_manager.add::<Network>();
+        module_manager.add::<Crypto>();
         module_manager.add::<CensorshipPatch>();
         module_manager
             .init()

hkrpg/src/modules/censorship_patch.rs

@@ -11,7 +11,7 @@ macro_rules! replace {
         $(
             if $config.$field != 0 {
                 $self.interceptor.replace(
-                    $self.base.wrapping_add($config.$field),
+                    $config.$field,
                     CensorshipPatch::on_set_dither,
                 )?;
             } else {
@@ -24,14 +24,7 @@ macro_rules! replace {
 impl HkrpgModule for HkrpgModuleContext<CensorshipPatch> {
     unsafe fn init(&mut self) -> Result<(), ilhook::HookError> {
         let config = rva_config();
-        replace!(
-            self,
-            config,
-            set_distance_dither,
-            set_elevation_dither,
-            set_dither_alpha,
-            set_dither_alpha_anim
-        );
+        replace!(self, config, set_dither);
         Ok(())
     }
 }

hkrpg/src/modules/crypto.rs

@@ -0,0 +1,23 @@
+use crate::{addr::rva_config, il2cpp_string::Il2cppString};
+
+use super::{HkrpgModule, HkrpgModuleContext};
+
+pub struct Crypto;
+
+const ACCOUNT_RSA_KEY_REPLACEMENT: &str = include_str!("../../sdk_public_key.xml");
+
+impl HkrpgModule for HkrpgModuleContext<Crypto> {
+    unsafe fn init(&mut self) -> Result<(), ilhook::HookError> {
+        let config = rva_config();
+        if config.sdk_public_key != 0 {
+            unsafe {
+                *(config.sdk_public_key as *mut Il2cppString) =
+                    Il2cppString::new(ACCOUNT_RSA_KEY_REPLACEMENT)
+            }
+            println!("[crypto::init] AccountRSAKey replaced")
+        } else {
+            println!("[crypto::init] pattern is outdated! disabling AccountRSAKey replacement")
+        }
+        Ok(())
+    }
+}

hkrpg/src/modules/hk_check.rs

@@ -10,14 +10,11 @@ impl HkrpgModule for HkrpgModuleContext<HkCheck> {
     unsafe fn init(&mut self) -> Result<(), ilhook::HookError> {
         let config = rva_config();
         if config.hk_check1 != 0 && config.hk_check2 != 0 {
-            self.interceptor.replace(
-                self.base.wrapping_add(config.hk_check1),
-                HkCheck::replacement,
-            )?;
-            self.interceptor.replace(
-                self.base.wrapping_add(config.hk_check2),
-                HkCheck::replacement,
-            )?;
+            self.interceptor
+                .replace(config.hk_check1, HkCheck::replacement)?;
+            self.interceptor
+                .replace(config.hk_check2, HkCheck::replacement)?;
+            println!("[hk_check::init] hk_check bypassed")
         }
         Ok(())
     }

hkrpg/src/modules/misc.rs

@@ -0,0 +1,39 @@
+use crate::modules::{HkrpgModule, HkrpgModuleContext};
+use ilhook::x64::Registers;
+use std::ffi::CStr;
+use windows::{
+    Win32::System::LibraryLoader::{GetModuleHandleA, GetProcAddress},
+    core::s,
+};
+
+pub struct Misc;
+
+impl HkrpgModule for HkrpgModuleContext<Misc> {
+    unsafe fn init(&mut self) -> Result<(), ilhook::HookError> {
+        unsafe {
+            let ws32 = GetModuleHandleA(s!("Ws2_32.dll")).unwrap();
+            let get_addr_info = GetProcAddress(ws32, s!("getaddrinfo")).unwrap();
+            self.interceptor
+                .attach(get_addr_info as usize, Misc::on_get_addr_info)?;
+
+            println!("[misc::init] initialized")
+        }
+
+        Ok(())
+    }
+}
+
+impl Misc {
+    pub unsafe extern "win64" fn on_get_addr_info(reg: *mut Registers, _: usize) {
+        unsafe {
+            let host = CStr::from_ptr((*reg).rcx as *const i8).to_string_lossy();
+
+            if host.contains("globaldp-")
+                && (host.contains("bhsr.com") || host.contains("starrails.com"))
+            {
+                println!("[*] [on_get_addr_info] {host} -> 0.0.0.0");
+                std::ptr::copy_nonoverlapping(c"0.0.0.0".as_ptr(), (*reg).rcx as *mut i8, 9);
+            }
+        }
+    }
+}

hkrpg/src/modules/mod.rs

@@ -3,11 +3,13 @@ use std::marker::PhantomData;
 use crate::{addr, interceptor::Interceptor};
 
 pub mod censorship_patch;
+pub mod crypto;
 pub mod hk_check;
 pub mod network;
+pub mod misc;
 
 pub struct HkrpgModuleContext<T> {
-    base: usize,
+    _base: usize,
     interceptor: Interceptor,
     _module_type: PhantomData<T>,
 }
@@ -15,8 +17,8 @@ pub struct HkrpgModuleContext<T> {
 impl<T> HkrpgModuleContext<T> {
     fn new(base: usize) -> Self {
         Self {
-            base,
-            interceptor: Interceptor::default(),
+            _base: base,
+            interceptor: Interceptor::new(),
             _module_type: PhantomData,
         }
     }

hkrpg/src/modules/network.rs

@@ -9,11 +9,10 @@ pub struct Network;
 impl HkrpgModule for HkrpgModuleContext<Network> {
     unsafe fn init(&mut self) -> Result<(), ilhook::HookError> {
         let config = rva_config();
-        if config.make_initial_url != 0 && config.ptr_to_string_ansi != 0 {
-            self.interceptor.attach(
-                self.base.wrapping_add(config.make_initial_url),
-                Network::on_make_initial_url,
-            )?;
+        if config.make_initial_url != 0 && config.il2cpp_string_new_len != 0 {
+            self.interceptor
+                .attach(config.make_initial_url, Network::on_make_initial_url)?;
+            println!("[network::init] network patch enabled")
         } else {
             println!("[network::init] pattern is outdated! disabling http redirection")
         }

hkrpg/src/util.rs

@@ -10,7 +10,7 @@ use windows::{
     core::s,
 };
 
-use crate::addr::{GAME_ASSEMBLY_BASE, UNITY_PLAYER_BASE};
+use crate::addr::GAME_ASSEMBLY_BASE;
 
 #[allow(static_mut_refs)]
 unsafe fn game_assembly_slice() -> &'static [u8] {
@@ -38,49 +38,78 @@ unsafe fn game_assembly_slice() -> &'static [u8] {
     }
 }
 
-#[allow(static_mut_refs)]
-unsafe fn unity_player_slice() -> &'static [u8] {
-    static mut SLICE: OnceCell<&[u8]> = OnceCell::new();
-    unsafe {
-        SLICE.get_or_init(|| {
-            let module = GetModuleHandleA(s!("UnityPlayer.dll")).unwrap();
-            let mut module_info = MODULEINFO {
-                lpBaseOfDll: std::ptr::null_mut(),
-                SizeOfImage: 0,
-                EntryPoint: std::ptr::null_mut(),
-            };
-            GetModuleInformation(
-                GetCurrentProcess(),
-                module,
-                &mut module_info,
-                std::mem::size_of::<MODULEINFO>() as u32,
-            )
-            .unwrap();
-            std::slice::from_raw_parts(
-                module.0 as *const u8,
-                module_info.SizeOfImage.try_into().unwrap(),
-            )
-        })
-    }
-}
-
 pub unsafe fn scan_il2cpp_section(pat: &str) -> Option<usize> {
     let mut slice = unsafe { game_assembly_slice() };
     scan_first_match(&mut slice, pat).unwrap().map(|address| {
         let slice = unsafe { game_assembly_slice() };
-        let instruction = &slice[address..address + 1][0];
-        if *instruction == 0xE8 {
-            let offset = i32::from_le_bytes((&slice[address + 1..address + 1 + 4]).try_into().unwrap());
-            let pointer = offset as usize + 5 + address;
-            return GAME_ASSEMBLY_BASE.wrapping_add(pointer);
+        match slice.get(address) {
+            // jmp sub_xxxxxxx
+            Some(&0xE8) => {
+                let offset =
+                    i32::from_le_bytes(slice[address + 1..address + 5].try_into().unwrap());
+                GAME_ASSEMBLY_BASE.wrapping_add(address + 5 + offset as usize)
+            }
+            // mov rcx, [rip + offset] (0x48 0x8B 0x0D XXXXXXXX)
+            Some(&0x48)
+                if slice.get(address + 1) == Some(&0x8B)
+                    && slice.get(address + 2) == Some(&0x0D) =>
+            {
+                let offset =
+                    i32::from_le_bytes(slice[address + 3..address + 7].try_into().unwrap());
+                GAME_ASSEMBLY_BASE.wrapping_add(address + 7 + offset as usize)
+            }
+            _ => GAME_ASSEMBLY_BASE.wrapping_add(address),
         }
-        GAME_ASSEMBLY_BASE.wrapping_add(address)
     })
 }
 
-pub unsafe fn scan_unity_player_section(pat: &str) -> Option<usize> {
-    let mut slice = unsafe { unity_player_slice() };
-    scan_first_match(&mut slice, pat)
-        .unwrap()
-        .map(|loc| UNITY_PLAYER_BASE.wrapping_add(loc))
-}
+// #[allow(static_mut_refs)]
+// unsafe fn unity_player_slice() -> &'static [u8] {
+//     static mut SLICE: OnceCell<&[u8]> = OnceCell::new();
+//     unsafe {
+//         SLICE.get_or_init(|| {
+//             let module = GetModuleHandleA(s!("UnityPlayer.dll")).unwrap();
+//             let mut module_info = MODULEINFO {
+//                 lpBaseOfDll: std::ptr::null_mut(),
+//                 SizeOfImage: 0,
+//                 EntryPoint: std::ptr::null_mut(),
+//             };
+//             GetModuleInformation(
+//                 GetCurrentProcess(),
+//                 module,
+//                 &mut module_info,
+//                 std::mem::size_of::<MODULEINFO>() as u32,
+//             )
+//             .unwrap();
+//             std::slice::from_raw_parts(
+//                 module.0 as *const u8,
+//                 module_info.SizeOfImage.try_into().unwrap(),
+//             )
+//         })
+//     }
+// }
+
+// pub unsafe fn scan_unity_player_section(pat: &str) -> Option<usize> {
+//     let mut slice = unsafe { unity_player_slice() };
+//     scan_first_match(&mut slice, pat).unwrap().map(|address| {
+//         let slice = unsafe { unity_player_slice() };
+//         match slice.get(address) {
+//             // jmp sub_xxxxxxx
+//             Some(&0xE8) => {
+//                 let offset =
+//                     i32::from_le_bytes(slice[address + 1..address + 5].try_into().unwrap());
+//                 UNITY_PLAYER_BASE.wrapping_add(address + 5 + offset as usize)
+//             }
+//             // mov rcx, [rip + offset] (0x48 0x8B 0x0D XXXXXXXX)
+//             Some(&0x48)
+//                 if slice.get(address + 1) == Some(&0x8B)
+//                     && slice.get(address + 2) == Some(&0x0D) =>
+//             {
+//                 let offset =
+//                     i32::from_le_bytes(slice[address + 3..address + 7].try_into().unwrap());
+//                 UNITY_PLAYER_BASE.wrapping_add(address + 7 + offset as usize)
+//             }
+//             _ => UNITY_PLAYER_BASE.wrapping_add(address),
+//         }
+//     })
+// }

launcher/build.rs

@@ -0,0 +1,4 @@
+fn main() {
+    println!("cargo:rustc-link-arg-bin=launcher=/MANIFEST:EMBED");
+    println!("cargo:rustc-link-arg-bin=launcher=/MANIFESTUAC:level=\'requireAdministrator\'");
+}

launcher/src/main.rs

@@ -4,16 +4,17 @@ use std::ffi::CString;
 
 use std::ptr::null_mut;
 use windows::Win32::Foundation::{CloseHandle, GetLastError, HANDLE};
+use windows::Win32::Security::{GetTokenInformation, TOKEN_ELEVATION, TOKEN_QUERY, TokenElevation};
 use windows::Win32::System::Diagnostics::Debug::WriteProcessMemory;
 use windows::Win32::System::LibraryLoader::{GetModuleHandleA, GetProcAddress};
 use windows::Win32::System::Memory::{
     MEM_COMMIT, MEM_RELEASE, MEM_RESERVE, PAGE_READWRITE, VirtualAllocEx, VirtualFreeEx,
 };
 use windows::Win32::System::Threading::{
-    CREATE_SUSPENDED, CreateProcessA, CreateRemoteThread, PROCESS_INFORMATION, ResumeThread,
-    STARTUPINFOA, WaitForSingleObject,
+    CREATE_SUSPENDED, CreateProcessA, CreateRemoteThread, OpenProcessToken, PROCESS_INFORMATION,
+    ResumeThread, STARTUPINFOA, WaitForSingleObject,
 };
-use windows::core::{PSTR, s};
+use windows::core::{Error, PSTR, s};
 
 fn inject_standard(h_target: HANDLE, dll_path: &str) -> bool {
     unsafe {
@@ -70,7 +71,48 @@ fn inject_standard(h_target: HANDLE, dll_path: &str) -> bool {
     }
 }
 
+fn is_running_as_admin() -> Result<bool, Error> {
+    unsafe {
+        let mut token_handle = HANDLE::default();
+        let current_process = windows::Win32::System::Threading::GetCurrentProcess();
+
+        if OpenProcessToken(current_process, TOKEN_QUERY, &mut token_handle).is_err() {
+            return Err(windows::core::Error::from_win32());
+        }
+
+        let mut elevation = TOKEN_ELEVATION::default();
+        let mut size = std::mem::size_of::<TOKEN_ELEVATION>() as u32;
+
+        let success = GetTokenInformation(
+            token_handle,
+            TokenElevation,
+            Some(&mut elevation as *mut _ as *mut _),
+            size,
+            &mut size,
+        );
+
+        let _ = CloseHandle(token_handle);
+
+        if success.is_ok() {
+            Ok(elevation.TokenIsElevated != 0)
+        } else {
+            Err(windows::core::Error::from_win32())
+        }
+    }
+}
+
+fn wait_exit() {
+    println!("Press any key to exit...");
+    let mut input = String::new();
+    std::io::stdin().read_line(&mut input).unwrap();
+}
+
 fn main() {
+    if !is_running_as_admin().unwrap_or_default() {
+        println!("launcher need to be launched as admin");
+        wait_exit();
+    }
+
     let current_dir = std::env::current_dir().unwrap();
     let dll_path = current_dir.join("hkrpg.dll");
     if !dll_path.is_file() {