EASF compression format used by EA Sport in FIFA series

[Rinaldo]

Ciao Luigi,
I develop editing tools for FIFA but I am in trouble to figure out the compression method used. I am able to decompress files marked as "chunkzip" into a plain text file. But now another file marked "EASF" has been introduced. Btw. I am pretty sure that the output of the "EASF" decompression must be a "chunkzip" file because, using a file of a previous version of FIFA, it is evident that the length of the decompressed "EASF" file is equal to the length of the compressed "chunkzip". Unfortunately I don't know how to get the "chunkzip" out from the "EASF".

Attached you can find the plain text file, the chunzip file and the EASF file.
Can you help me ?

Grazie,
Rinaldo

[aluigi]

EASF is an encryption and I guess that Fifa File Explorer decrypts and extracts these files.

[Rinaldo]

Grazie Luigi.
Unfortunately this tool does not work fine (it worked for some files of FIFA 14 but not for FIFA 15 and it crashes quite often) and the author is not available to share what he discovered. Do you have any clue about the encryption method ?

btw. I wonder if the file are attached... I can't see them.

[aluigi]

Unfortunately I don't have information about the EASF encryption because I never worked on it and have no intention on doing it (it would mean to work on all the FIFA series... lot of work).

Regarding the attachment, probably you forgot to hit "Add the file" before Submit.

[Rinaldo]

OK, I understand.
Btw.I attached the files if somobody is curious or wants to help.

Thanks anyway.

[JohnHudeski]

Here

[Skoczek]

EASF is an encryption and I guess that Fifa File Explorer decrypts and extracts these files.

Although it decrypts .ini and .lua files pretty easily, it doesn't want to decrypt files such as splash screens (in old .fsh format). The output file always contains 0 kb. Or you found a way how to force this program to make this work?