Encrypted EA BIGF Files

Extraction and unpacking of game archives and compression, encryption, obfuscation, decoding of unknown files
bama1ma
Posts: 3
Joined: Tue Apr 06, 2021 5:57 am

Encrypted EA BIGF Files

Post by bama1ma »

Hi everyone,

I'm new to this forum and have been trying to encrypt a file used in the game 'EA Sports Rugby 08'.

The file appears to be in EA BIGF format, but is likely encypted.

I had a look in hex and see that it contains several files in .viv format.

I have tried using tools such as BIGGUI and several other scripts I have tried (including the
BIG file extractor).

There are two files attached here, one is the file in .big format and a .bin file - which may be an index file of sorts.

https://www.mediafire.com/file/w821m0a9 ... e.rar/file

I would appreciate any assistance with trying to decrypt this file.
beedy
Posts: 81
Joined: Sat Aug 26, 2017 8:09 am

Re: Encrypted EA BIGF Files

Post by beedy »

The file is 90FB compressed which is some kind of Refpack (typically 10FB) compression format. Here is compressor/decompressor for it.
https://cncguild.net/item-133

type decompress.exe 4bff1461263dfe7d59a840cbfd8520aa.big 4bff1461263dfe7d59a840cbfd8520aa_decompressed.big

You can extract decrypted BIGF and .viv files inside it using quickbms and this script:
http://aluigi.altervista.org/bms/ea_big4.bms
bama1ma
Posts: 3
Joined: Tue Apr 06, 2021 5:57 am

Re: Encrypted EA BIGF Files

Post by bama1ma »

Thanks for the help. Really appreciate it.