SoulCalibur2-game-unpacker

program to decrypt and unpack the PS2AC05 binary blob from System246 SoulCalibur2

PS2AC05 is the main game binary blob. the game loader (SCSLOAD file inside dongle) will look for PS2AC05 inside the security dongle (mc0), developer flash (rom1:) or inside the disc (cdrom0:\) (in this order)

the file gets directly loaded into ram 0x1000000, from there SCSLOAD will decrypt and unpack the file in-place, then the 0x1000000 is casted as a function pointer and called, starting the game

thanks to @DiscoStarslayer for helping me to get the unpacking and decryption working.

Usage

SC2_unpacker.exe <INPUT> <OUTPUT1> <OUTPUT2>

• INPUT: your PS2AC05 file
• OUTPUT1: the path to write the decrypted binary (normally you don't care of this file)
• OUTPUT2: the path to write the decrypted and decompressed binary