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psse-decrypt

Decrypt PSSE layer of PSM Games (on PC) Works on Unity and PSM games, and meets all requirements of: https://github.com/vita-nuova/bounties/issues/73 Usage: psse_decrypt.py <psm game folder>

Discoveries:

Every game has its own aes-128-cbc key, (located 0x120 bytes into FAKE.rif), so its probably not possible to decrypt a game without a license
PSM Runtime has a hard coded key for its runtime libaries. - A8693C4DF0AEEDBC9ABFD8213692912D

After 9 years, the encryption used by PlayStation Mobile games is finally cracked!!

Requires: pycryptodome cryptography