View Full Version : Battlefield 3 Decryptor
mojobojo
10-30-2011, 02:37 AM
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"
Game Wizard
10-30-2011, 04:25 AM
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?
Vincent Valentine
10-30-2011, 05:53 AM
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.
xI cHOcOLaTe
10-30-2011, 08:07 AM
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.
Resigner
10-30-2011, 08:08 PM
What file is this suppose to decrypt?
mojobojo
10-30-2011, 08:22 PM
What file is this suppose to decrypt?
The encrypted game resources in the game directory.
mel4nch0ly
10-31-2011, 02:56 AM
What does that do/give access to etc..?
sgtmcmeowmeow
11-03-2011, 05:24 AM
so what does it do
Emerald Lance
11-07-2011, 09:10 AM
It allows you to mod the game itself. It's not a save fixer, so you can't use it to mod your save (I have a feeling that's where this is going).
Just as Horizons said, all your online stats and unlocks are stored server-side, so they can't be edited. If you tried, it would either result in being reset to what it was before modding, being reset to beginning, or ban. Sorry guys, I thought about it too.
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