Ndk on Security Notes

Ndk on Security Notes https://blog.omiilgo.com/tags/ndk/ Recent content in Ndk on Security Notes Hugo en-us Sat, 04 Jan 2025 10:00:00 +0800 NDK .so Session: readelf, llvm-objdump -d, JNI_OnLoad https://blog.omiilgo.com/posts/android-native-library-re-notes/ Sat, 04 Jan 2025 10:00:00 +0800 https://blog.omiilgo.com/posts/android-native-library-re-notes/ One lab APK, one arm64-v8a .so. file/readelf/llvm-objdump through JNI_OnLoad, Java_* exports, GetStringUTFChars, a 32-byte stack copy, tombstone and ASAN. Frida logs length and prefix only. JNI_OnLoad vs Java_* Name Mangling on a Lab APK https://blog.omiilgo.com/posts/android-jni-onload-name-mangling/ Mon, 02 Dec 2019 10:00:00 +0800 https://blog.omiilgo.com/posts/android-jni-onload-name-mangling/ Self-built APK where javah-style Java_com_lab_onload_Bridge_* exports sit next to a RegisterNatives table. readelf -s, ARM64 JNIEnv GetObjectClass, crash on an unbounded UTF copy.