Unlocking The Campaign With A Hex Editor

Feb 26, 2016
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#1
So Halo 2 by default encrypts all of your saves and gametypes using your Windows profile. The latest update got rid of this so it's much easier to read in hex than it was before. This thread will be what the title implies. No more having to copy the map files 15 times and skipping cutscenes to do this. You will need a hex editor to do this. I personally use HxD.

https://mh-nexus.de/en/hxd/

Go to the following folder location

"C:\Users\(USER)\AppData\Local\Microsoft\Halo 2\Saved Games"

There should be a ton of folders labled something like "S0000000" or "S0000005"

Go ahead and look inside the folders one by one and check if it has the following contents
auxilary.bin
profile
savemeta.bin

If it has those three then open the profile file in a hex editor and see if it says your profile name on the top. Like so


If it looks nothing like this and looks like a jumbled mess of letters and numbers then your profile hasn't been unencrypted. Go ingame and change a color or something on your profile and exit. It should update it so it looks more like what I have here. Now press CTRL+G and type "2DC"


Should end up on this part of the file. Now change the line there from "FF FF FF FF" to "21 03 00 00" like so.


You will need to log out of your account if you are still logged in for it to update. You should have the entire campaign unlocked after that.