The EBOOT.BIN is a digitally signed and encrypted executable file based on the ELF (Executable and Linkable Format) standard, similar to Linux binaries but wrapped in Sony’s proprietary security layers. When you insert a PS3 disc or launch a digital title, the following happens:

(Signed ELF) files. The "S" signifies it is wrapped in a proprietary layer of Sony encryption and digital signatures to prevent unauthorized code execution.

Technically, every game has its own unique EBOOT. If you are browsing your PS3's internal files via FTP or a file manager like or multiMAN , you can usually find the EBOOT.BIN in the following directory: /dev_hdd0/game/[GAME_ID]/USRDIR/