45f8acb24a
Poll-based host intrusion-detection daemon modeled on freeze-watcher's sample→trigger→snapshot→classify loop, with security signatures instead of performance ones: - reverse_shell (interpreter with a network socket on stdio) - ld_preload (/etc/ld.so.preload or LD_PRELOAD in writable dirs) - deleted_exe (process running from a deleted/memfd binary) - new_listener (listening port absent from startup baseline) - new_suid (new SUID/SGID binary; critical in writable dirs) - persistence (cron/systemd/authorized_keys/rc-file changes) - suspicious_egress (interpreter holding an outbound public connection) Each capture writes a forensic snapshot with per-signature incident- response guidance. Includes a safe, self-cleaning red-team harness (sentinel-redteam), hardened systemd unit, config, Makefile, and Arch packaging. Tested on Arch: detectors fire on drills, no false positives on a clean sweep, sweep cost optimized from ~15s to ~1s via batched syscalls and a gated filesystem-wide SUID scan. This bash implementation is retained as the regression oracle for the forthcoming Python rewrite. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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21 lines
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MIT License
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Copyright (c) 2026 Enodia
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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