65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
#include <injshared.h>
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#include <lpayload.h>
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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(ENV_EXE_PATH, 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(ENV_DLL_PATH, 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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