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`proc/self/exe` is a symbolic link to `/system/bin/app_process64`. Hence, it can be used to test if this file is mounted under a file system that is different from the normal one (EXT4).
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The mounted file system type is leaked via |
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If the
/systemdirectory is mounted by KernelSU as overlayfs, then many detectors can still detect the mounting trace even the target is correctly unmounted.In Holmes V1.5.1, it is shown as
Inconsistent Mount. In Hunter 6.41, it is shown asI am going to figure out this detection. However, no luck via scanning /proc/self/fd yet.