Initial commit
This commit is contained in:
87
injector/include/injshared.h
Normal file
87
injector/include/injshared.h
Normal file
@ -0,0 +1,87 @@
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#include <windows.h>
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static inline void write_protected_process_memory(HANDLE process, void *address, const void *buf, size_t size) {
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DWORD oldProtect;
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VirtualProtectEx(process, address, size, PAGE_EXECUTE_READWRITE, &oldProtect);
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size_t bytesWritten;
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WriteProcessMemory(process, address, buf, size, &bytesWritten);
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VirtualProtectEx(process, address, size, oldProtect, &oldProtect);
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}
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static inline void inject(HANDLE process, const void *payload, size_t payloadSize, const char *dllPath) {
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size_t _;
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// Inject the loader into the module
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size_t dllPathLen = strlen(dllPath) + 1;
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char *remoteAlloc = VirtualAllocEx(process, NULL, payloadSize + dllPathLen, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
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WriteProcessMemory(process, remoteAlloc, payload, payloadSize, &_);
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WriteProcessMemory(process, remoteAlloc + payloadSize, dllPath, dllPathLen, &_);
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// Find the EXE header in the process
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char exeHeader[1024];
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IMAGE_DOS_HEADER *dosHeader;
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IMAGE_NT_HEADERS64 *ntHeaders;
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MEMORY_BASIC_INFORMATION memoryInfo;
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char *currentAddress = 0x0;
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while (VirtualQueryEx(process, currentAddress, &memoryInfo, sizeof(memoryInfo))) {
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ReadProcessMemory(process, currentAddress, exeHeader, sizeof(exeHeader), &_);
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dosHeader = (IMAGE_DOS_HEADER*)exeHeader;
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// DOS header magic "MZ"
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if (dosHeader->e_magic != 0x5A4D) {
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goto cont;
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}
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ntHeaders = (IMAGE_NT_HEADERS64*)(exeHeader + dosHeader->e_lfanew);
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// NT header signature "PE"
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if (ntHeaders->Signature != 0x4550) {
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goto cont;
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}
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// Skip DLLs
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if ((ntHeaders->FileHeader.Characteristics | IMAGE_FILE_DLL) == IMAGE_FILE_DLL) {
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goto cont;
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}
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// Skip potential headers without an entry point
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// I have no idea how and why they exist, but apparently they do
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if (ntHeaders->OptionalHeader.AddressOfEntryPoint == 0) {
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goto cont;
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}
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// Found EXE header
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break;
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cont:
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currentAddress += memoryInfo.RegionSize;
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}
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char *exe = (char*)memoryInfo.BaseAddress;
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// Replace the entry point with a jump to the loader
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char *entryPoint = exe + ntHeaders->OptionalHeader.AddressOfEntryPoint;
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const unsigned char JUMP_INST[] = { 0xFF, 0x25, 0x00, 0x00, 0x00, 0x00 };
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write_protected_process_memory(process, entryPoint, JUMP_INST, sizeof(JUMP_INST));
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write_protected_process_memory(process, entryPoint + sizeof(JUMP_INST), &remoteAlloc, sizeof(remoteAlloc));
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// Break the import table to prevent any dlls from being loaded
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// Step 1: break the first import descriptor
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char *importDescriptors = exe + ntHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress;
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IMAGE_IMPORT_DESCRIPTOR firstDescriptor;
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ZeroMemory(&firstDescriptor, sizeof(firstDescriptor));
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write_protected_process_memory(process, importDescriptors, &firstDescriptor, sizeof(firstDescriptor));
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// Step 2: break the image data directory entry
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ntHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].Size = 0;
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write_protected_process_memory(process, exe, exeHeader, sizeof(exeHeader));
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}
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18
injector/launcher_payload/meson.build
Normal file
18
injector/launcher_payload/meson.build
Normal file
@ -0,0 +1,18 @@
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# Assemble the payload that will be injected into the game
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l_payload_bin = asm_gen.process('src/payload.asm')
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# Embed it into the library
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l_res_files = custom_target(
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'lpayload.[oh]',
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output: [ 'lpayload.o', 'lpayload.h' ],
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input: [ l_payload_bin ],
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command: [ gen_res, './injector/launcher_payload', '@OUTPUT0@', '@OUTPUT1@', '@INPUT@' ]
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)
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shared_library(
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'launcher_payload',
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'src/dll.c',
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l_res_files,
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include_directories: '../include',
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name_prefix: ''
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)
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67
injector/launcher_payload/src/dll.c
Normal file
67
injector/launcher_payload/src/dll.c
Normal file
@ -0,0 +1,67 @@
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#include <injshared.h>
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#include <lpayload.h>
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const char EXE_ENV[] = "JADEITE_TARGET_EXE_PATH";
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const char INJECT_DLL_ENV[] = "JADEITE_INJECT_DLL_PATH";
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static inline void read_env(const char *env, char *dest, size_t size) {
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GetEnvironmentVariableA(env, dest, size);
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SetEnvironmentVariableA(env, "");
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}
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BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved) {
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// Only listen for attach
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if (reason != DLL_PROCESS_ATTACH) {
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return TRUE;
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}
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// Get target EXE path
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char targetExe[MAX_PATH];
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read_env(EXE_ENV, targetExe, sizeof(targetExe));
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// Get the path of the DLL to inject
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char injectDll[MAX_PATH];
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read_env(INJECT_DLL_ENV, injectDll, sizeof(injectDll));
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// Compute the working directory path
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char workdir[MAX_PATH];
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strcpy(workdir, targetExe);
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*(strrchr(workdir, '\\')) = '\0';
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// Start the game
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STARTUPINFO si;
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ZeroMemory(&si, sizeof(si));
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PROCESS_INFORMATION pi;
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si.cb = sizeof(si);
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ZeroMemory(&pi, sizeof(pi));
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if (!CreateProcessA(
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targetExe,
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NULL,
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NULL,
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NULL,
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FALSE,
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CREATE_SUSPENDED,
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NULL,
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workdir,
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&si,
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&pi
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)) {
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exit(1);
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}
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// Inject
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void *payloadStart = &_binary_lpayload_o_p_payload_bin_start;
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size_t payloadSize = (size_t)&_binary_lpayload_o_p_payload_bin_size;
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inject(pi.hProcess, payloadStart, payloadSize, injectDll);
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// Resume the process
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ResumeThread(pi.hThread);
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// The launcher process should now hang untill the game terminates
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WaitForSingleObject(pi.hProcess, INFINITE);
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return TRUE;
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}
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137
injector/launcher_payload/src/payload.asm
Normal file
137
injector/launcher_payload/src/payload.asm
Normal file
@ -0,0 +1,137 @@
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BITS 64
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main: ; Replacement entry point
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push rbp
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mov rbp, rsp
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sub rsp, 30h + 90h
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call GetKernel32ModuleHandle
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mov [rbp - 8h], rax ; kernel32.dll
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mov rcx, rax
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call GetAddressOf_GetProcAddress
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mov [rbp - 10h], rax ; *GetProcAddress
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mov rcx, [rbp - 8h] ; kernel32.dll
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lea rdx, [rel s_LoadLibraryA]
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mov rax, [rbp - 10h] ; *GetProcAddress
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call rax ; rax = *LoadLibraryA
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mov [rbp - 18h], rax
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lea rcx, [rel dllPath]
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call rax ; LoadLibraryA(dllPath)
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mov rcx, [rbp - 8h] ; kernel32.dll
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lea rdx, [rel s_GetModuleHandleA]
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mov rax, [rbp - 10h] ; *GetProcAddress
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call rax ; rax = *GetModuleHandle
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mov rcx, 0
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call rax ; rax = .exe base address
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mov [rbp - 20h], rax
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mov rcx, [rbp - 8h] ; kernel32.dll
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lea rdx, [rel s_GetCommandLineW]
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mov rax, [rbp - 10h] ; *GetProcAddress
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call rax ; rax = *GetCommandLineW
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call rax ; rax = command line
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mov [rbp - 28h], rax
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lea rcx, [rel s_UnityPlayer.dll]
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mov rax, [rbp - 18h] ; *LoadLibraryA
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call rax ; rax = UnityPlayer.dll
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mov rcx, rax
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lea rdx, [rel s_UnityMain]
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mov rax, [rbp - 10h] ; *GetProcAddress
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call rax ; rax = *UnityMain
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mov rcx, [rbp - 20h] ; .exe base address
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mov rdx, 0 ; hPrevInstance - 0
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mov r8, [rbp - 28h] ; command line
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mov r9, 1 ; SW_NORMAL
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call rax ; UnityMain(...)
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add rsp, 30h + 90h
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pop rbp
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ret
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; https://dennisbabkin.com/blog/?t=how-to-implement-getprocaddress-in-shellcode
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GetKernel32ModuleHandle:
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mov rax, gs:[60h]
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mov rax, [rax + 18h]
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mov rax, [rax + 20h]
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mov rax, [rax]
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mov rax, [rax]
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mov rax, [rax + 20h]
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ret
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GetAddressOf_GetProcAddress:
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mov eax, [rcx + 3ch]
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add rax, rcx
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lea rax, [rax + 88h]
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mov edx, [rax]
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lea rax, [rcx + rdx]
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mov edx, [rax + 18h]
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mov r8d, [rax + 20h]
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lea r8, [rcx + r8]
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mov r10, 41636f7250746547h ; "GetProcA"
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mov r11, 0073736572646441h ; "Address\0"
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GAO_GPA@1:
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mov r9d, [r8]
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lea r9, [rcx + r9]
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; Function name comparision
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cmp r10, [r9]
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jnz GAO_GPA@2
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cmp r11, [r9 + 7]
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jnz GAO_GPA@2
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; Found GetProcAddress
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neg rdx
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mov r10d, [rax + 18h]
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lea rdx, [r10 + rdx]
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mov r10d, [rax + 24h]
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lea r10, [rcx + r10]
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movzx rdx, word [r10 + rdx * 2]
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mov r10d, [rax + 1ch]
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lea r10, [rcx + r10]
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mov r10d, [r10 + rdx * 4]
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lea rax, [rcx + r10] ; Function address
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jmp GAO_GPA@end
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GAO_GPA@2:
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add r8, 4
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dec rdx
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jnz GAO_GPA@1
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GAO_GPA@end:
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ret
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; Strings
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s_LoadLibraryA: db "LoadLibraryA", 0
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s_GetModuleHandleA: db "GetModuleHandleA", 0
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s_GetCommandLineW: db "GetCommandLineW", 0
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s_UnityPlayer.dll: db "UnityPlayer.dll", 0
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s_UnityMain: db "UnityMain", 0
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dllPath:
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; This will be filled out by the launcher payload dll
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; Path to the dll to inject into the game
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21
injector/meson.build
Normal file
21
injector/meson.build
Normal file
@ -0,0 +1,21 @@
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# Assemble the payload that will be injected into the launcher
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inj_payload_bin = asm_gen.process('src/payload.asm')
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# Embed it into the library
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inj_res_files = custom_target(
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'ipayload.[oh]',
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output: [ 'ipayload.o', 'ipayload.h' ],
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input: [ inj_payload_bin ],
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command: [ gen_res, './injector', '@OUTPUT0@', '@OUTPUT1@', '@INPUT@' ]
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)
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# Main injector exe
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executable(
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'jadeite',
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'src/injector.c',
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inj_res_files,
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include_directories: 'include',
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name_prefix: ''
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)
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subdir('launcher_payload')
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87
injector/src/injector.c
Normal file
87
injector/src/injector.c
Normal file
@ -0,0 +1,87 @@
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#include <stdio.h>
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#include <injshared.h>
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#include <ipayload.h>
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const char EXE_ENV[] = "JADEITE_TARGET_EXE_PATH";
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const char INJECT_DLL_ENV[] = "JADEITE_INJECT_DLL_PATH";
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const char LAUNCHER_INJECT_DLL[] = "launcher_payload.dll";
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const char GAME_INJECT_DLL[] = "game_payload.dll";
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int main(int argc, char **argv) {
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// Read arguments
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char *gamePath = NULL;
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char *launcherPath = NULL;
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switch (argc) {
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case 1:
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printf("Usage: wine jadeite.exe [game path] <launcher path>\n");
|
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return 0;
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case 2:
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printf("No launcher process specified! Using explorer.exe\n");
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gamePath = argv[1];
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launcherPath = "C:\\Windows\\explorer.exe";
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break;
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case 3:
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gamePath = argv[1];
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launcherPath = argv[2];
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break;
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default:
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fprintf(stderr, "Too many arguments! (%d)\n", argc);
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return 1;
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}
|
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|
||||
// Compute absolute paths
|
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char gameExePath[MAX_PATH];
|
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GetFullPathNameA(gamePath, sizeof(gameExePath), gameExePath, NULL);
|
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|
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char gamePayloadPath[MAX_PATH];
|
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GetFullPathNameA(GAME_INJECT_DLL, sizeof(gamePayloadPath), gamePayloadPath, NULL);
|
||||
|
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char launcherPayloadPath[MAX_PATH];
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GetFullPathNameA(LAUNCHER_INJECT_DLL, sizeof(launcherPayloadPath), launcherPayloadPath, NULL);
|
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|
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printf("Starting \"%s\" via \"%s\"\n", gameExePath, launcherPath);
|
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|
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// Set envvars
|
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SetEnvironmentVariableA(EXE_ENV, gameExePath);
|
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SetEnvironmentVariableA(INJECT_DLL_ENV, gamePayloadPath);
|
||||
|
||||
// Start the launcher
|
||||
STARTUPINFO si;
|
||||
ZeroMemory(&si, sizeof(si));
|
||||
|
||||
PROCESS_INFORMATION pi;
|
||||
si.cb = sizeof(si);
|
||||
ZeroMemory(&pi, sizeof(pi));
|
||||
|
||||
if (!CreateProcessA(
|
||||
launcherPath,
|
||||
NULL,
|
||||
NULL,
|
||||
NULL,
|
||||
FALSE,
|
||||
CREATE_SUSPENDED,
|
||||
NULL,
|
||||
NULL,
|
||||
&si,
|
||||
&pi
|
||||
)) {
|
||||
fprintf(stderr, "Could not start process! (%ld)\n", GetLastError());
|
||||
exit(1);
|
||||
}
|
||||
|
||||
printf("Started launcher process (%ld)\n", pi.dwProcessId);
|
||||
|
||||
// Inject
|
||||
void *payloadStart = &_binary_ipayload_o_p_payload_bin_start;
|
||||
size_t payloadSize = (size_t)&_binary_ipayload_o_p_payload_bin_size; // yes this is valid
|
||||
inject(pi.hProcess, payloadStart, payloadSize, launcherPayloadPath);
|
||||
|
||||
// Resume the process
|
||||
ResumeThread(pi.hThread);
|
||||
|
||||
return 0;
|
||||
}
|
||||
98
injector/src/payload.asm
Normal file
98
injector/src/payload.asm
Normal file
@ -0,0 +1,98 @@
|
||||
BITS 64
|
||||
|
||||
main: ; Replacement entry point
|
||||
push rbp
|
||||
mov rbp, rsp
|
||||
sub rsp, 10h + 90h
|
||||
|
||||
|
||||
call GetKernel32ModuleHandle
|
||||
mov [rbp - 8h], rax ; kernel32.dll
|
||||
|
||||
mov rcx, rax
|
||||
call GetAddressOf_GetProcAddress
|
||||
mov [rbp - 10h], rax ; *GetProcAddress
|
||||
|
||||
|
||||
mov rcx, [rbp - 8h] ; kernel32.dll
|
||||
lea rdx, [rel s_LoadLibraryA]
|
||||
mov rax, [rbp - 10h] ; *GetProcAddress
|
||||
call rax ; rax = *LoadLibraryA
|
||||
|
||||
lea rcx, [rel dllPath]
|
||||
call rax ; LoadLibraryA(dllPath)
|
||||
|
||||
|
||||
add rsp, 10h + 90h
|
||||
pop rbp
|
||||
ret
|
||||
|
||||
|
||||
; https://dennisbabkin.com/blog/?t=how-to-implement-getprocaddress-in-shellcode
|
||||
GetKernel32ModuleHandle:
|
||||
mov rax, gs:[60h]
|
||||
mov rax, [rax + 18h]
|
||||
mov rax, [rax + 20h]
|
||||
mov rax, [rax]
|
||||
mov rax, [rax]
|
||||
mov rax, [rax + 20h]
|
||||
ret
|
||||
|
||||
|
||||
GetAddressOf_GetProcAddress:
|
||||
mov eax, [rcx + 3ch]
|
||||
add rax, rcx
|
||||
lea rax, [rax + 88h]
|
||||
|
||||
mov edx, [rax]
|
||||
lea rax, [rcx + rdx]
|
||||
|
||||
mov edx, [rax + 18h]
|
||||
mov r8d, [rax + 20h]
|
||||
lea r8, [rcx + r8]
|
||||
|
||||
mov r10, 41636f7250746547h ; "GetProcA"
|
||||
mov r11, 0073736572646441h ; "Address\0"
|
||||
|
||||
GAO_GPA@1:
|
||||
mov r9d, [r8]
|
||||
lea r9, [rcx + r9]
|
||||
|
||||
; Function name comparision
|
||||
cmp r10, [r9]
|
||||
jnz GAO_GPA@2
|
||||
cmp r11, [r9 + 7]
|
||||
jnz GAO_GPA@2
|
||||
|
||||
; Found GetProcAddress
|
||||
neg rdx
|
||||
mov r10d, [rax + 18h]
|
||||
lea rdx, [r10 + rdx]
|
||||
|
||||
mov r10d, [rax + 24h]
|
||||
lea r10, [rcx + r10]
|
||||
movzx rdx, word [r10 + rdx * 2]
|
||||
|
||||
mov r10d, [rax + 1ch]
|
||||
lea r10, [rcx + r10]
|
||||
|
||||
mov r10d, [r10 + rdx * 4]
|
||||
|
||||
lea rax, [rcx + r10] ; Function address
|
||||
jmp GAO_GPA@end
|
||||
|
||||
GAO_GPA@2:
|
||||
add r8, 4
|
||||
dec rdx
|
||||
jnz GAO_GPA@1
|
||||
|
||||
GAO_GPA@end:
|
||||
ret
|
||||
|
||||
|
||||
; Strings
|
||||
s_LoadLibraryA: db "LoadLibraryA", 0
|
||||
|
||||
dllPath:
|
||||
; This will be filled out by the injector
|
||||
; Path to the dll to inject into the launcher
|
||||
Reference in New Issue
Block a user