Fix oat_hook for recent Android versions#387
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JingMatrix merged 2 commits intomasterfrom Aug 9, 2025
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We used to hook functions `OatHeader::GetKeyValueStore` and `OatHeader::GetKeyValueStoreSize` to clean the `dex2oat` trace introduced by LSPosed. However, in recent versions of Android, these two functions are no longer exported. Moreover, the `OatHeader` structure has changed, which now sets certain entries to have fixed length by padding zeros. To address these two changes, we hook `OatHeader::ComputeChecksum` as an entrypoint (fallback), and then employ the header file of `OatHeader` copied from AOSP to precisely locate its fields. Using this strategy, we modify `key_value_store` in memory, depending on whether the entry `dex2oat-cmdline` is padded.
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Otherwise, uint32_t is shown as negative numbers in logs.
lshwjgpt25
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Sep 3, 2025
This reverts commit 6703b45. r掉
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We used to hook functions
OatHeader::GetKeyValueStoreandOatHeader::GetKeyValueStoreSizeto clean thedex2oattrace introduced by LSPosed. However, in recent versions of Android, these two functions are no longer exported. Moreover, theOatHeaderstructure has changed, which now sets certain entries to have fixed length by padding zeros.To address these two changes, we hook
OatHeader::ComputeChecksumas an entrypoint (fallback), and then employ the header file ofOatHeadercopied from AOSP to precisely locate its fields. Using this strategy, we modifykey_value_storein memory, depending on whether the entrydex2oat-cmdlineis padded.