/// <summary>
/// Restores <see cref="HookedMethod"/> to its previous state.
/// </summary>
public void Dispose()
{
var functionPointer = HookedMethod.MethodHandle.GetFunctionPointer();
using (MemoryManagement.Protect(functionPointer, (uint)_originalIntro.Length, MemProtection.ExecReadWrite))
{ Marshal.Copy(_originalIntro, 0, functionPointer, _originalIntro.Length); }
}
public HookHandle(IntPtr hookedFunc, IntPtr newFunc)
{
byte[] NewIntro = new byte[] { 0xE9, 0x90, 0x90, 0x90, 0x90, 0xC3 };
Array.Copy(BitConverter.GetBytes(newFunc.ToInt32() - hookedFunc.ToInt32() - 5), 0, NewIntro, 1, 4);
byte[] OrigIntro;
using (MemoryManagement.Protect(hookedFunc, NewIntro.Length, MemProtection.ExecReadWrite)) {
OrigIntro = new byte[NewIntro.Length];
Marshal.Copy(hookedFunc, OrigIntro, 0, OrigIntro.Length);
}
Init(hookedFunc, OrigIntro, NewIntro);
}
public static byte[] Hook(IntPtr OldFunc, IntPtr NewFunc)
{
byte[] JMP = new byte[] { 0xE9, 0x90, 0x90, 0x90, 0x90, 0xC3 };
Array.Copy(BitConverter.GetBytes(NewFunc.ToInt32() - OldFunc.ToInt32() - 5), 0, JMP, 1, 4);
using (MemoryManagement.Protect(OldFunc, (uint)JMP.Length, MemProtection.ExecReadWrite)) {
byte[] Orig = new byte[JMP.Length];
Marshal.Copy(OldFunc, Orig, 0, Orig.Length);
Marshal.Copy(JMP, 0, OldFunc, JMP.Length);
return(Orig);
}
}
void WriteIntro(byte[] Intro)
{
using (MemoryManagement.Protect(HookedFunc, Intro.Length, MemProtection.ExecReadWrite)) {
Marshal.Copy(Intro, 0, HookedFunc, Intro.Length);
}
}