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Knight308, posted Sun Feb 05, 2023 12:09 pm (75301)

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Hi there, I recently found a mobile game called'?????: ?????????' It has pretty good spine animations. But its' files are all mess. Can someone help me take a look at this game. Thanks a lot.
Game Link: https://play.google.com/store/apps/deta ... h_TW&gl=US

179971c, posted Tue Feb 07, 2023 7:47 pm (75330)

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It looks like all asset files have 0C 07 08 0D 0B 09 header.
And cocos2dx version of this game is 3.17.2

When looking for the code you can find lots of cocos2d::FileUtils::s_decodeBuff, but this function point to nothing, after doing some analysis, you can find the decrypt function at AppDelegate::applicationDidFinishLaunching, because cocos2d::FileUtils::s_decodeBuff was init there, and you can find the header in the gameex function.

I test this script, although decrypt fail, but I think you can continue to finish it base on this.
viewtopic.php?t=15027

And the attachment is a program to download all hotRes files.

Kanojo_AssetDL.zip

179971c, posted Fri Feb 10, 2023 7:55 am (75386)

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179971c wrote:

It looks like all asset files have 0C 07 08 0D 0B 09 header.
And cocos2dx version of this game is 3.17.2

When looking for the code you can find lots of cocos2d::FileUtils::s_decodeBuff, but this function point to nothing, after doing some analysis, you can find the decrypt function at AppDelegate::applicationDidFinishLaunching, because cocos2d::FileUtils::s_decodeBuff was init there, and you can find the header in the gameex function.

I test this script, although decrypt fail, but I think you can continue to finish it base on this.
viewtopic.php?t=15027

And the attachment is a program to download all hotRes files.

I have sucessfully to decrypt it.
And this the tool, have fun
https://github.com/28598519a/Kanojo_AssetDecDL

Knight308, posted Fri Feb 10, 2023 1:20 pm (75389)

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thank you so much for your work!