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Author: vxnetrip

dllcrack_template.cpp

@@ -0,0 +1,63 @@
+// dllmain.cpp : Defines the entry point for the DLL application.
+#include "pch.h"
+
+#define TARGET_MODULE L"app.exe"
+
+DWORD WINAPI MainThread(HMODULE hModule)
+{
+    AllocConsole();
+    FILE* f;
+    freopen_s(&f, "CONOUT$", "w", stdout);
+
+    printf("");
+
+    //Sleep(2000);
+    //FreeConsole();
+
+    DWORD moduleBase = (DWORD)GetModuleHandle(TARGET_MODULE);
+
+    // std::cout << std::hex << moduleBase << std::endl;
+
+    HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, GetCurrentProcessId());
+
+    if (hProcess == NULL)
+    {
+        printf("Error opening process: %d\n", GetLastError());
+        return 1;
+    }
+
+    DWORD dwAddress = moduleBase + 0x15D9;
+
+    // je value 2370315380 found with cheat engine 
+
+    DWORD patchValue = 2370315381; // jne value 2370315381
+
+    if (!WriteProcessMemory(hProcess, (LPVOID)dwAddress, &patchValue, sizeof(patchValue), 0))
+    {
+        printf("Error writing to process memory: %d\n", GetLastError());
+        CloseHandle(hProcess);
+        return 1;
+    }
+    CloseHandle(hProcess);
+
+    return 0;
+}
+
+
+
+BOOL APIENTRY DllMain( HMODULE hModule,
+                       DWORD  ul_reason_for_call,
+                       LPVOID lpReserved
+                     )
+{
+    switch (ul_reason_for_call)
+    {
+    case DLL_PROCESS_ATTACH:
+        CloseHandle(CreateThread(nullptr, 0, (LPTHREAD_START_ROUTINE)MainThread, hModule, 0, nullptr));
+    case DLL_THREAD_ATTACH:
+    case DLL_THREAD_DETACH:
+    case DLL_PROCESS_DETACH:
+        break;
+    }
+    return TRUE;
+}