Use SCS Extractor (official) to unpack, e.g., def.scs or base.scs .
are saved in an encrypted format to save space and prevent easy tampering.
Drag your encrypted .sii file and drop it directly onto the SII_Decrypt.exe icon.
“I spent 3 hours looking for a decryptor – just use SCS Extractor + the XOR script. Most ‘encrypted’ SII files are just XORed with 0x55. Check the Tools subforum sticky.” – (SCS Forum user, 2022)
SII files are used by SCS Software in their games for data storage. These files contain information in a text format that can be easily read and edited.
name: "D13K500" torque: 2500
: Save the text file and launch the game. There is no need to re-encrypt; the game will automatically re-serialize the file upon the next save. SCS Software Troubleshooting Common Issues trucky/sii-decrypt-ts - NPM