"Hacking" is almost always a largely self-taught skill, too; we can point you at things you need to know (some reverse engineering, some coding, an understanding of the OS security mechanisms, an understanding of the application model, etc.) and some tools you will want (the WP8 SDK, additional WP8 library files (possibly extracted using a tool like dll2lib) and headers, a managed code decompiler such as Reflector or JustDecompile, a native code disassembler such as IDA, etc.), but we can't tell you how to put it all together. If we knew that ourselves, we wouldn't need any help... but the help we need is from people who can figure things out without having their hands held.
Win8/Windows RT projects:
List of desktop apps for hacked RT devices
Native Access WebServer and Libraries
WP8 Interop Unlocks
XapHandler, Root Webserver, OEM Marketplace XAPs, Bookmarklets collection (Find On Page), Interop-unlock hacks.