well it's still an NT kernel and you're still using the same headers for the PE as you would for Windows like the way the PE table is set up the same just different information however the structure is almost identical have you had a chance to look at any of the Xbox original source code that got leaked or any of the Xbox One Source Code that got leaked. it would give you a better idea of what you're looking at especially when looking at the differences in the NT. we're not ruining Linux were running a special version of Windows. if you want more detail just ask I was just giving you a Beka basic understanding if you want to learn more about PE headers that would be awesome and I recommend Google.
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