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A Peek inside a PS3 PKG file! 550°
382w ago - Had a little time over the weekend to play with some PS3 .PKG files.

Here is a peek inside a PS3 Package file, see below!

For reference, some files like executables are still encrypted even when unpacked from a .PKG file, sound files are not. PSARC files are definitely compressed and likely encrypted as well.

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Revised PS3 Boot Information 250°
389w ago - Our Resident DEVS have revised the PS3 Bootup procedure, with some more interesting information.

asecure_loader is not at start of the NAND. The first 512KB also is skipped, or actually any 512 block of FF is skipped.

Furthermore, the asecure_loader differs per box, possibly encrypted with a per-box key. Files of course are not in clear, that suggests that at every step an encryption/decryption is done.

The boot loader in IDA does not look microcode for IDL, maybe it's encrypted with cpu key (the IBM secure boot/asecure_loader), that can explain also why...

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PS3 Development Discoveries: Week 1 100°
394w ago - Each week or so we will post a brief report from the resident PS3 Devs here, and below is one for this week:

The PS3 Boot-up Procedure.

The SCC (Super Companion Chip), made by Toshiba gets the PS3 started up. It reads asecure_loader from flash, and loads it into SPE in isolation mode. The Flash reading is interesting, as the data on the flash chips are interleaved, so the SCC merges them, among other things.

asecure_loader is then decrypted and ran, and it brings up lv1ldr. The keys for self decryption (among other things) are most likely accessible...

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