Use length in header for checksum, fix error in Dex v41#2711
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skylot merged 2 commits intoskylot:masterfrom Dec 2, 2025
Merged
Use length in header for checksum, fix error in Dex v41#2711skylot merged 2 commits intoskylot:masterfrom
skylot merged 2 commits intoskylot:masterfrom
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skylot
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Dec 2, 2025
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@kmod-midori thank you for fix and sample 👍 |
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Dex v41 (#2128) allows storing multiple dex files inside a single container. Currently the checksum verification uses the whole file for calculation, which fails if there are multiple files inside a single dex, as the checksum only covers the dex entry that is immediately following the header, not the whole file which is actually 2 or more dex files. This leads to JADX failing to load services.jar in various Android 16 ROMs.
This passes all currently available tests, but I don't know if it will fail on ill-formed dex files out there, one can always disable checksum checking tho.
Example file (taking from Samsung OneUI 8.0):
services.zip