Leftover Leftovers β GPN CTF 2026
A two-stage Java AOT-cache app whose integrity hash covers bytecode and pointers but not the archived heap β patching the pre-resolved heap String redirects the image directory and reads /flag.
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A two-stage Java AOT-cache app whose integrity hash covers bytecode and pointers but not the archived heap β patching the pre-resolved heap String redirects the image directory and reads /flag.
Reversing a Javalin app whose real password validator lives in an AOT/CDS cache that overrides the jar β dumping the loaded class with the HotSpot Serviceability Agent unlocks a file-read to /flag.