Function main

Self-Remapping Code/main.cpp:111–151

}

int main(int argc, char* argv[])
{
    const PVOID imagebase = GetModuleHandleA(NULL);
    if (ValidateSectionAlignment(imagebase))
    {
        const DWORD imageSize = GetSizeOfImage(imagebase);
        
        // Allocate an executable / writable memory region where the remapping code will execute.
        if (PVOID remapperRegion = VirtualAlloc(NULL, imageSize, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE))
        {
            // Copy SelfRemappingCode.exe's image to this region.
            memcpy(remapperRegion, imagebase, imageSize);
            
            // Calculate remap::RemapSelfImage's VA in this region.
            typedef void(*Remap_t)(PVOID);
            Remap_t Remap = Remap_t(SIZE_T(remapperRegion) + SIZE_T(remap::RemapSelfImage) - SIZE_T(imagebase));
           
            // Process execution continues in the new region.
            Remap(remapperRegion);
            // Process execution returns to the original (remapped) region.
            
            VirtualFree(remapperRegion, 0, MEM_RELEASE);
            TestVirtualProtect(imagebase);
            for (;;)
            {
                printf("Zzz...\n");
                Sleep(3000);
            }
        }
        else
            printf("VirtualAlloc failed for remapper region:  %d.\n", GetLastError());
    }
    else
        printf("Error: .rdata or .data are not aligned to system allocation granularity.\n");

    // Force-include filler code / data.
    if (SIZE_T(imagebase) == 1) { filler::text(); const double zxcv = filler::rdata[3]; }

    getchar();
    return 0;
}