Easter Egg in APK Files: What Is Frosting

Frosting and APK Signing Block

  • 0x504b4453 (DEPENDENCY_INFO_BLOCK_ID) — a block that apparently contains dependency metadata, which is saved by the Android Gradle plugin to identify any issues related to dependencies
  • 0x71777777 (APK_CHANNEL_BLOCK_ID) — a Walle (Chinese gizmo) assembler block, which contains JSON with a channel ID
  • 0xff3b5998 — a zero block, which I ran into in the file — I couldn't find any information on that
  • 0x2146444e — a block with the necessary metadata from Google Play

Frosting and Play Market

Frosting and ProtoBuf

  • com.google.android.feature.DPS
  • com.google.android.feature.PIXEL_EXPERIENCE
  • com.google.android.feature.PIXEL_2017_EXPERIENCE
  • com.google.android.feature.PIXEL_2019_EXPERIENCE
  • com.google.android.feature.ANDROID_ONE_EXPERIENCE
  • com.google.android.feature.PIXEL_2018_EXPERIENCE
  • com.google.android.feature.PIXEL_2020_EXPERIENCE
  • android.hardware.ram.low
  • com.google.android.apps.dialer.GO_EXPERIENCE
  • com.google.android.feature.PIXEL_2020_EXPERIENCE
  • android.hardware.camera.level.full
  • com.google.android.feature.PIXEL_2020_EXPERIENCE

Conclusion

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