Tag: Frida

Hardware key attestation lets an Android app prove to its backend that a key lives in secure hardware on a locked, verified device. It is also the wall that stops a security analyst working on a rooted phone. This article opens the mechanism from the analyst's chair, from the certificate chain and the attestation extension down to the root of trust, then shows a simple bypass that never touches the secure hardware. We relay the attestation to a clean device and splice a genuine chain back into the target app with a Frida hook. A companion repository ships the validation backend, the demo apps and the instrumentation, so the whole setup can be run and inspected rather than taken on faith.

This article is about greybox fuzzing of userland targets that can be encountered in Android using AFL++ and its Frida mode. We also discuss how to target JNI functions, to test the native features invoked by Java code.

This blog post dives into how to get a better understanding of an Android native function by taking full advantage of both Frida and QBDI.