from Hacker News

The Dex File Format

by fractalwrench on 1/4/18, 6:41 PM with 3 comments

• by vmarquet on 1/5/18, 1:25 AM

  For a quick reference of the Dex file format, Ange Albertini (known for PoC||GTFO) made a poster: https://github.com/corkami/pics/blob/master/binary/DalvikEXe...

  All his posters are pretty amazing: https://github.com/corkami/pics/blob/master/binary/README.md

• by xg15 on 1/5/18, 12:48 PM

  > The next value is a checksum, which is calculated by applying a function to the contents of the entire file, excluding any bytes preceding the checksum.

  [...]

  > The header also includes a SHA-1 hash of the file (excluding any preceding bytes).

  Wait, each checksum includes the other? How does that work?