Pes4 and pes5 engine?

Is it possible to edit the engine(exe file) with programs like hexeditor,
unity engine or unreal engine 4?
 
So you want to make PES 5 use the Unreal Engine 4 by hexediting the .exe?

I didn't want pes 5 to use the unreal engine 4, i just wanted a program which give you the possibility to open the pes5 exe file
and to rewrite/edit the game's(gameplay) code
 
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