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Battlefield 3 Decryptor
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  1. #1
    Divided by zero and lived

    mojobojo is offline
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    Battlefield 3 Decryptor

    I reversed the game and figured out the encryption used on the BF3 resources with the 0x00D1CE00 header magic. Just run it once on the file to decrypt it, and once again to re-encrypt it. The crypto is just a simple XOR encryption with a per-file key and a constant. I did this for the PC version, if this does not work for the xbox 360 just send me the a few files and an xex and I can fix that.

    Source is included. Compile for linux with "gcc -Os bf3decrypt.c -o bf3decrypt"
    Last edited by mojobojo; 03-02-2014 at 04:31 AM.
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  3. #2
    Haven Donator

    Game Wizard is offline
    Join Date : Dec 2010
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    Re: Battlefield 3 Decryptor

    Quote Originally Posted by mojobojo View Post
    I reversed the game and figured out the encryption used on the BF3 resources with the 0x00D1CE00 header magic. Just run it once on the file to decrypt it, and once again to re-encrypt it. The crypto is just a simple XOR encryption with a per-file key and a constant. I did this for the PC version, if this does not work for the xbox 360 just send me the a few files and an xex and I can fix that.

    Source is included. Compile for linux with "gcc -Os bf3decrypt.c -o bf3decrypt"
    http://dl.dropbox.com/u/45861203/bf3decrypt.zip
    so if this works for 360 does that mean u can mod the medals online?

  4. #3
    Vincent Valentine

    Re: Battlefield 3 Decryptor

    Quote Originally Posted by ytv View Post
    so if this works for 360 does that mean u can mod the medals online?
    Probably not since its all server side and not in the .gpd or save file. But you never know until you check for yourself but everyone else is saying that you wont be able to cause if it was possible then bf2 would have been able to be modded online with a usb.

  5. #4
    Senior Member
    xI cHOcOLaTe is offline
    Join Date : Oct 2011
    Location : NY - FL
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    Re: Battlefield 3 Decryptor

    Quote Originally Posted by mojobojo View Post
    I reversed the game and figured out the encryption used on the BF3 resources with the 0x00D1CE00 header magic. Just run it once on the file to decrypt it, and once again to re-encrypt it. The crypto is just a simple XOR encryption with a per-file key and a constant. I did this for the PC version, if this does not work for the xbox 360 just send me the a few files and an xex and I can fix that.

    Source is included. Compile for linux with "gcc -Os bf3decrypt.c -o bf3decrypt"
    http://dl.dropbox.com/u/45861203/bf3decrypt.zip
    Nice mojo :) . Amazing work.
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    My signature won't fit. :(

  6. #5
    Senior Member
    Resigner is offline
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    Re: Battlefield 3 Decryptor

    What file is this suppose to decrypt?
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  7. #6
    Divided by zero and lived

    mojobojo is offline
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    Re: Battlefield 3 Decryptor

    Quote Originally Posted by Resigner View Post
    What file is this suppose to decrypt?
    The encrypted game resources in the game directory.
    Downloads : 4 || Uploads : 1 || Rep Power : 3576 || Posts : 389 || Thanks : 52 || Thanked 1,032 Times in 236 Posts



  8. #7
    mel4nch0ly

    Re: Battlefield 3 Decryptor

    What does that do/give access to etc..?

  9. #8
    sgtmcmeowmeow

    Re: Battlefield 3 Decryptor

    so what does it do

 

 
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