This README is translated from README_CN by ChatGPT.

X-Monitor

X-Monitor is an open-source, extensible event monitoring tool for macOS that provides security professionals with the ability to perform process behavior auditing. It is implemented natively in Objective-C.

Deny process And Low version macOS

If you need:

1. Deny new process execve.
2. 10.12 ~ 10.14 macOS support.

You can use NuwaStone, this project supports deny new process that has no signature.

NuwaStone may merge with X-Monitor in the future and move to Macintosh-Mystery organization.

Feature

Current support:

1. It currently supports: notify_exec,notify_open,notify_fork,notify_close,notify_create,notify_exchangedata,notify_exit,notify_get_task,notify_kextload,notify_kextunload,notify_link,notify_mmap,notify_mprotect,notify_mount,notify_unmount,notify_iokit_open,notify_rename,notify_setattrlist,notify_setextattr,notify_setflags,notify_setmode,notify_setowner,notify_signal,notify_unlink,notify_write,notify_file_provider_materialize,notify_file_provider_update,notify_readlink,notify_truncate,notify_lookup,notify_chdir,notify_getattrlist,notify_stat,notify_access,notify_chroot,notify_utimes,notify_clone,notify_fcntl,notify_getextattr,notify_listextattr,notify_readdir,notify_deleteextattr,notify_fsgetpath,notify_dup,notify_settime,notify_uipc_bind,notify_uipc_connect,notify_setacl,notify_pty_grant,notify_pty_close,notify_proc_check,notify_searchfs,notify_proc_suspend_resume,notify_cs_invalidated events from the Endpoint Security framework.
2. It support event classification according to the event type.

It will support in the future:

1. All events from the Endpoint Security framework. (H1 priority)(X-Monitor is designed to be extensible, thus adding events is very easy. For example, Add set extend attribute event, it only requires to parser the event unique attribute in the event handler.)
2. Event filter. (H1 priority)
3. Process chain analysis. (H2 priority)
4. Network connection and DNS events from the Network Extension framework. (H2 priority)
5. Save events to local disk. (H3 priority)

Installation

X-Monitor can be built from source code or installed from pre-compiled binaries.

Build

Required Xcode Version 14.3.

Usage

System Requirements

X-Monitor is designed to support macOS 10.15 and above.

During the project creation, consideration was given to using Kernel Extensions (KEXT) to support systems from 10.12 to 10.14. However:

1. KEXT is deprecated.
2. KEXT's event support is far less than SEXT (from Endpoint Security).

Therefore, after careful consideration, the development plan for KEXT has been indefinitely postponed.

Notes

Due to the lack of corresponding Entitlements for X-Monitor developers, please disable SIP.

Start Event Monitor

1. Click the "start" button to begin monitoring events. Subscription settings can be configured through X-Monitor -> Settings in the menu.
2. Clicking on a specific row will display detailed information about the event.

Uninstallation

Simply move X-Monitor to the trash bin.

Support

If you encounter any issues while using X-Monitor, please feel free to submit an issue.

Other Pending Tasks

1. Unit testing.
2. Documentation writing.
3. Implement system extension XPC peer signing verification.
4. Optimize performance of NSTableView used for displaying events.(Added)