tretrauit/jadeite
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Refuse to launch if the patcher is inside the game directory

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This commit is contained in:
mkrsym1 2023-07-02 23:21:17 +03:00
parent 181d14e4ce
commit cf5d87f7a7
1 changed files with 38 additions and 2 deletions
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40
injector/src/dll.c
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@ -5,6 +5,10 @@
#include <game_p.h>
typedef char *(*wgufn_t)(wchar_t* path); // wine_get_unix_file_name
const char *J_MB_TITLE = "Jadeite Launcher Payload";
BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved) {
// Only listen for attach
if (reason != DLL_PROCESS_ATTACH) {
@ -25,6 +29,38 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved) {
strcpy(workdir, targetExe);
*(strrchr(workdir, '\\')) = '\0';
// SAFETY: verify that the injector is not inside the game directory
HMODULE kernel32 = GetModuleHandleA("kernel32.dll");
wgufn_t wine_get_unix_file_name = (wgufn_t)GetProcAddress(kernel32, "wine_get_unix_file_name");
if (wine_get_unix_file_name) {
wchar_t wInjectDll[MAX_PATH], wWorkdir[MAX_PATH];
MultiByteToWideChar(CP_UTF8, 0, injectDll, strlen(injectDll) + 1, wInjectDll, MAX_PATH);
MultiByteToWideChar(CP_UTF8, 0, workdir, strlen(workdir) + 1, wWorkdir, MAX_PATH);
char *unixInjectDll = wine_get_unix_file_name(wInjectDll);
char *unixWorkdir = wine_get_unix_file_name(wWorkdir);
char startsWith = 0;
while (*unixInjectDll != '\0' && *unixWorkdir != '\0') {
startsWith = *unixInjectDll == *unixWorkdir;
if (!startsWith) break;
unixInjectDll++, unixWorkdir++;
}
HANDLE heap = GetProcessHeap();
HeapFree(heap, 0, unixInjectDll);
HeapFree(heap, 0, unixWorkdir);
if (startsWith) {
MessageBoxA(NULL, "Putting the patcher (or any other foreign PE binaries) inside the game directory is dangerous! Please move it elsewhere.", J_MB_TITLE, MB_OK | MB_ICONERROR);
exit(1);
}
} else {
MessageBoxA(NULL, "Could not find wine_get_unix_file_name! Wine version too old?", J_MB_TITLE, MB_OK | MB_ICONWARNING);
}
// Start the game
STARTUPINFO si;
ZeroMemory(&si, sizeof(si));
@ -47,7 +83,7 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved) {
)) {
char message[64];
sprintf(message, "Failed to start game process: %ld", GetLastError());
MessageBoxA(NULL, message, "Jadeite Launcher Payload", MB_OK | MB_ICONERROR);
MessageBoxA(NULL, message, J_MB_TITLE, MB_OK | MB_ICONERROR);
exit(1);
}
@ -62,7 +98,7 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved) {
if (waitEnabled && strcmp(waitEnabled, "") != 0) {
char message[64];
sprintf(message, "PID: %ld. Press OK to continue", pi.dwProcessId);
MessageBoxA(NULL, message, "Jadeite Launcher Payload", MB_OK | MB_ICONINFORMATION);
MessageBoxA(NULL, message, J_MB_TITLE, MB_OK | MB_ICONINFORMATION);
}
// Resume the process