Results 1 to 3 of 3

Thread: need help decrypting and decompressing file

  1. #1
    Member
    Join Date
    Nov 2010
    Location
    home
    Posts
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts

    need help decrypting and decompressing file

    i assume if you guys know about compression you can reverse engineer this file. it is compressed (i believe with zlib) and encrypted (i believe with RSA but not sure). if any1 knows how to get these files decompresses/decrypted it would be great. if you make any progress post how you did it. http://www.megaupload.com/?d=H3J6MJDM

  2. #2
    Administrator Shelwien's Avatar
    Join Date
    May 2008
    Location
    Kharkov, Ukraine
    Posts
    3,334
    Thanks
    209
    Thanked 1,008 Times in 533 Posts
    It doesn't make sense to try anything with just the file.
    Afaik its some kind of xbox update, so there should be the code which decrypts it.
    So decryption is probably not the problem, but making a custom patch file which
    would be accepted by standard loader is another matter.

  3. #3
    Programmer schnaader's Avatar
    Join Date
    May 2008
    Location
    Hessen, Germany
    Posts
    561
    Thanks
    212
    Thanked 200 Times in 93 Posts
    There's a tutorial on how to edit these files here: http://insomniacgamerz.net/forums/no...gfx_mp-ff.html, but it fails on your file, so you might look for a way to decrypt it first. At least, you have a way to check successful decryption (bytes at offset 0x4025 should be 78 DA and the beginning of a zLib stram).

    Also, .FF viewer from http://dev-il.com/xbox/ffViewer.zip doesn't work, but could work on a decrypted version.
    http://schnaader.info
    Damn kids. They're all alike.

Similar Threads

  1. Ring 1.5c crash when decompressing.
    By Jahoui in forum Data Compression
    Replies: 4
    Last Post: 31st July 2009, 22:08
  2. Can't extract file from ARC file.
    By Absurd in forum Data Compression
    Replies: 3
    Last Post: 26th January 2009, 21:11

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •