Hex modding - VenoMKO/RealEditor GitHub Wiki

To do Hex mods you would need to find the source packages. You can follow the general guide to do this: Create a mod

After you've found the source package you can open it in the hex editor of your choice and do your magic. But keep in mind that x64 Tera bumped UDK version from 610(578 actually) to 897. This means the objects have different structure compared to x86, so you can't put your old x86 mods into new packages. But, you can recreate them using x64 packages.