1.提取IPA（它包含单个Payload目录）：

$ unzip MyApp.ipa

1. Info.plist的打印内容

$ plutil -p ./Payload/MyApp.app/Info.plist

 "CFBundleIcons" => {
   "CFBundlePrimaryIcon" => {
     "CFBundleIconFiles" => [
       0 => "AppIcon60x60"
     ]
     "CFBundleIconName" => "AppIcon"
   }
 }
 "CFBundleIcons~ipad" => {
   "CFBundlePrimaryIcon" => {
     "CFBundleIconFiles" => [
       0 => "AppIcon60x60"
       1 => "AppIcon76x76"
     ]
     "CFBundleIconName" => "AppIcon"
   }
 }

1.将./Payload/MyApp.app/中列出的所有图标替换为新图标。

1. Zip修改./Payload为新IPA

$ zip -vr NewMyApp.ipa ./Payload

1.带有新图标的NewMyApp.ipa可以使用