You don't have to find a original EBOOT, there is an easier method that will restore all your files to default. Go into your XMB and go to Saved Data Utility (PS3), click on it. Once you've clicked on it find Call of Duty: Ghosts, while hovering over it click triangle on your PS3 controller and click "Delete". Now run Call of Duty: Ghosts, it should ask you for a update. Update it and now all your files are restored to how it was when you got the game.
Thread has been moved to "Call of Duty: Ghosts Modding Questions" section

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