iOS App IPA package picture decryption

iOS app is actually a zip compression package, after decompression there are a lot of pictures, but these pictures are encrypted, open can see is black. It took a few days to finish the study and write a conversion tool. A smooth conversion of encrypted PNG images is possible.

Picture after conversion

Using the method is simple, drag the command-line window and enter the original and destination paths. Tools I upload to the resources, can be downloaded to use.

PngConver.exe C:\source.png C:\dest.png

Source code transfer, but definitely more than your own research cost-effective. qq:2506314894

iOS App IPA package picture decryption