android hacks

Some android dirty hacks I written.

prop-trace (bionic)

• bionic/0001-trace-property-reads.patch

Tracing property reads.

nobody ptraces (kernel)

• ./generic-kernel/0001-calm-down-nobody-is-ptracing-you.patch

Force TracerPid to be zero, which could be used to ptrace an unwilling application (e.g. DroidGuard)

fake nosuid and nodev mount options for /data (kernel)

• ./generic-kernel/fake-nosuid-and-nodev-for-data.patch

DroidGuard reads /proc/self/mount{s,info}. So if you mount /data without nosuid and nodev, SafetyNet and PlayIntegrity will show "No Integrity" to you.

This patch fakes the nosuid and nodev options for /data mountpoint.

Make docker use overlayfs driver on devices that released after sdcardfs deprecation

• ./generic-kernel/overlayfs-dont-make-DCACHE-OP-HASH-or-COMPARE-weird.patch

See the commit message and https://gist.github.com/FreddieOliveira/efe850df7ff3951cb62d74bd770dce27?permalink_comment_id=4842046#gistcomment-4842046 for more details.