public static byte[] GetHeadBytes(byte[] code)
{
IntPtr ptr3 = Marshal.AllocHGlobal(code.Length);
Marshal.Copy(code, 0, ptr3, code.Length);
UInt32 len = 0;
unsafe
{
byte *p = (byte *)ptr3.ToPointer();
byte *i = p;
while (i - p < 5)
{
Ldasm.ldasm_data data = new Ldasm.ldasm_data();
UInt32 t = Ldasm.ldasm(i, ref data, false);
i += t;
}
len = (UInt32)(i - p);
}
Marshal.FreeHGlobal(ptr3);
byte[] v = new byte[len];
for (int i = 0; i < len; i++)
{
v[i] = code[i];
}
return(v);
}
private static byte[] ProcessJmps(byte[] b, int rawAddr, int targetAddr)
{
IntPtr ptr3 = Marshal.AllocHGlobal(b.Length);
Marshal.Copy(b, 0, ptr3, b.Length);
unsafe
{
byte *p = (byte *)ptr3;
byte *i = p;
while (i - p < b.Length)
{
if (*i == 0xe9 || *i == 0xe8) //jmp or call
{
*((int *)(i + 1)) += rawAddr - targetAddr; //move the call
}
Ldasm.ldasm_data data = new Ldasm.ldasm_data();
uint t = Ldasm.ldasm(i, ref data, false);
i += t;
}
}
byte[] result = new byte[b.Length];
Marshal.Copy(ptr3, result, 0, b.Length);
Marshal.FreeHGlobal(ptr3);
return(result);
}
