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@smx-smx
Created December 14, 2022 21:29
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GetEntryAssembly override
private static unsafe void ReplaceGetEntryAssembly() {
MethodInfo methodToReplace = typeof(Assembly).GetMethod("GetEntryAssembly", BindingFlags.Instance | BindingFlags.Static | BindingFlags.NonPublic | BindingFlags.Public);
MethodInfo methodToInject = typeof(EzDotnetCompat).GetMethod("MyGetEntryAssembly", BindingFlags.Instance | BindingFlags.Static | BindingFlags.NonPublic | BindingFlags.Public);
RuntimeHelpers.PrepareMethod(methodToReplace.MethodHandle);
RuntimeHelpers.PrepareMethod(methodToInject.MethodHandle);
long* inj = (long*)methodToInject.MethodHandle.Value.ToPointer() + 1;
long* tar = (long*)methodToReplace.MethodHandle.Value.ToPointer() + 1;
byte* injInst = (byte*)*inj;
byte* tarInst = (byte*)*tar;
int* injSrc = (int*)(injInst + 1);
int* tarSrc = (int*)(tarInst + 1);
*tarSrc = (((int)injInst + 5) + *injSrc) - ((int)tarInst + 5);
}
private static Assembly MyGetEntryAssembly() {
return typeof(Program).Assembly;
}
public static void InstallHooks() {
// this is required for Log4Net to function properly
ReplaceGetEntryAssembly();
}
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