Developed by the legendary Chainfire, this is the most common "file" users seek. It is a modified stock kernel that injects the su binary and the Superuser APK into the system partition.
During the analysis, the following key observations were made:
| Issue | Cause | Workaround | |-------|-------|-------------| | Boot loop after rooting | Improper install-recovery.sh | Flash stock recovery via Odin, re-root with different SuperSU version | | Lost root after reboot | KNOX resetting system partition | Use systemless root (not available on KitKat) or patch boot.img | | Recovery not sticking | Samsung recovery restoration | Rename or delete /system/recovery-from-boot.p | | No root in adb shell | Missing ro.secure=0 | Patch default.prop in boot image |