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Lego Legacy deobfuscate png files

Posted: Tue Mar 09, 2021 9:46 pm
by AsparagusCute1467
Tried to get some png files from "Lego Legacy: Heroes Unboxed", but as usual with Gameloft they are obfuscated. The content of the files start with "GCBF", so I guess they are not compressed additionally. I tried the "gcbf_versus.bms" script from http://aluigi.altervista.org/quickbms.htm but it didn't work.

Anybody any idea what I'm missing? Or maybe even with a working solution?

Re: Lego Legacy deobfuscate png files

Posted: Wed Mar 10, 2021 6:10 am
by andree
Post a sample file.

Re: Lego Legacy deobfuscate png files

Posted: Wed Mar 10, 2021 7:32 am
by AsparagusCute1467
Sure thing!

Within the zip is the original, obfuscated file from the APK.

Re: Lego Legacy deobfuscate png files

Posted: Wed Mar 10, 2021 7:33 am
by AsparagusCute1467
(Sorry for splitting this in two replies, could not add two files at once)

Deobfuscated it should look like this:
yeti.png
(Got that image from another, uncomplete & outdated, source)

Re: Lego Legacy deobfuscate png files

Posted: Thu Mar 11, 2021 4:10 am
by AsparagusCute1467
Forget that I ever asked!

QuickBMS with the mentioned script is working perfect! I just missed the part, that the resulting file is a ktx file and not a straight png. So with an additional step I've got the pictures.