Assembly code to patch ram

i need a very small app written in assembler language which will be compatible with win7 /8 all it will do is patch memory of a dll with or without admin rights it must be very small it will be run from administrator cmd prompt 1: run 2: find dll in memory 3: given hex bytes to search for , finds 4: patches 5: closes if possible that it can be done without annoying antivirus would be good must be compatibek with x86/x64 windows xp , win7 , win8