Roblox File Unpatch All Exploit. Integrity of DLLor EXE if its CRC32 and unpacked you can actually use an exploit of adding more data to the end of the PE to apply any modifications you want This was popular to get around checkcum check on many early software/games rr/CRCmanipulator If your interested more in this this blog post has a great write up.
Roblox How To Fly Hack In Any Game Unpatched Youtube from youtube.com