After few tests in various devices, it seems that SELinux context modifications are unnecessary for the injection to work.
We thus remove all related manipulations. Further (partial) reverting of the commit must be justified with SELinux logs:
> adb shell su -c 'cat /proc/kmsg | grep avc'
- Implement fallbacks to `PTRACE_GETREGS` and `PTRACE_SETREGS` for 32-bit ARM (`__arm__`). Some kernels return `EIO` or `EINVAL` when attempting to access `NT_PRSTATUS` via `PTRACE_GETREGSET`/`PTRACE_SETREGSET`.
- Update `transfer_fd_to_remote` to use `libc_return_addr` instead of `0` as the return address during the `recvmsg` split-call. This ensures the remote process stops predictably at a known non-executable location rather than relying on a potentially unsafe jump to `0x0`.
- Clarify comments regarding i386 argument passing in `utils.cpp`. Correctly note that a linear `write_proc` starting at the new SP matches the `cdecl` Right-to-Left memory layout (since stacks grow downwards while memory writes move upwards), removing the suggestion that arguments needed reversing.
- Strictly adhere to the System V AMD64 ABI by skipping the 128-byte "Red Zone" before modifying the stack, see page 23 of https://gitlab.com/x86-psABIs/x86-64-ABI/-/jobs/artifacts/master/raw/x86-64-ABI/abi.pdf?job=build for details.
- Added `inject_via_staging` as a fallback strategy:
1. Copies the payload to `/data/local/tmp`.
2. Sets permissions/context (`u:object_r:system_file:s0`).
3. Loads via standard `dlopen`.
4. Immediately unlinks the file for stealth.
- Introduced `RegisterRestorer` RAII class to guarantee original registers are restored even if the injection logic returns early due to error.
This commit introduces the main application subproject, 'app', and sets up the necessary infrastructure for the TEESimulator.
Key changes:
* 'app' Subproject Setup: Added the new :app module with its initial structure, including build files, manifest, and Kotlin main entry point.
* LSPlt Integration: Added the LSPlt hooking framework as a Git submodule in app/src/main/cpp/external/ and configured its use in CMake.
* Native Build Configuration: Configured the C++ build to use LSPlt statically and compile two essential native libraries: libinject.so (for injection) and libTEESimulator.so (for interception/logic).
* Module Packaging: Implemented complex Gradle logic within app/build.gradle.kts to automate the creation of a flashable zip module (supporting Magisk, Ksu, and Apatch) with versioning based on Git information.
* Initial Module Files: Added the template files (module.prop, update-binary, updater-script) for the flashable module structure.
JingMatrix