Saving a exe file after changes.

Help on how to use HxD.
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amori1
Posts: 1
Joined: 01 Sep 2012 11:44

Saving a exe file after changes.

Post by amori1 »

Hey,

I have a tool and made somechanges (ONLY NAME and website info) and tried to save the file. But after saving the file became unstartable.

I used your tool to edit the Hex code.

I got this Error "XXXXX.exe is not a valid Win32 Application."

Any suggistion why ?

Thank you for help!
Maël
Site Admin
Posts: 1455
Joined: 12 Mar 2005 14:15

Re: Saving a exe file after changes.

Post by Maël »

You cannot change the size of an EXE without adapting some other fields, if you just overwrite then it should be no problem. But there is also a CRC (checksum) sometimes the file wasn't modified. Have a look at the PE format to find out how to do that.
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