I think there may be...
Its not hard, but may sound complicated at first.
Practice on a CD-RW.
Use this link -
i6comp tool
This is a brief description of what to do!
An .exe file is stored in .cab files, usually data1.cab.
Those .cab files are CABINET files.
Do not be fooled, they are NOT Windows .cab files which can be opened with WinZip. These are special.
There is a tool from Sony that allows you extract files in those .cab files, and I think it allows you to archive them back.
So, you might want to make a perfect 1:1 copy (or perfect as it gets, since you are going to use a crack anyway!).
Open it (if its an ISO format, or maybe you can open BlindWrite files with something?), extract the data.cab, data1.hdr and data2.cab files. Then, use the tool (i6comp) to open and extract those, then replace the .exe file, then archive them back, put .cab files back into the dumped image (somehow), and if everyting goes OK - the game will be installed with a cracked .exe file!
Make sure to save the original file though!
Now, all this is THEORY, and its possible that non of it will work due to CRC checks, size checks, etc...
Just try!