Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/asaotomo/deepsentry/webshell-huntnpx skills add asaotomo/DeepSentry --skill webshell-huntgit clone --depth 1 https://github.com/asaotomo/DeepSentryWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/asaotomo/deepsentry/webshell-hunt)<a href="https://agentmods.dev/skills/asaotomo/deepsentry/webshell-hunt"><img src="https://agentmods.dev/badge/skills/asaotomo/deepsentry/webshell-hunt.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00040 | $0.00573 |
| Opus 5 | $0.00020 | $0.00287 |
| Sonnet 5 | $0.00008 | $0.00115 |
| Haiku 4.5 | $0.00004 | $0.00057 |
Grade A, and why
webshell-hunt scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Webshell 狩猎 Skill
何时使用
- 用户要求在 Web 目录中查找后门/木马
- 应急响应中需要快速定位 Webshell
- CMS/框架目录出现异常文件
工作流程
阶段 1: 签名扫描（快速但误报多）
find /var/www -name "*.php" -exec grep -l "eval\s*(" {} \; 2>/dev/null
find /var/www -name "*.php" -exec grep -l "base64_decode" {} \; 2>/dev/null
find /var/www -name "*.jsp" -exec grep -l "Runtime.getRuntime" {} \; 2>/dev/null
阶段 2: 行为分析（降低误报）
# 最近 30 天修改的 PHP 文件
find /var/www -name "*.php" -mtime -30 -ls 2>/dev/null
# 非框架目录的可疑文件
find /var/www -name "*.php" -not -path "*/vendor/*" -not -path "*/node_modules/*" -mtime -7
阶段 3: 内容确认
对可疑文件使用 read_file 或 cat 查看内容，识别：
<?php @eval($_POST[...]); ?>— 一句话木马base64_decode+eval组合 — 混淆后门system()/exec()/shell_exec()— 命令执行
阶段 4: 处置建议
- 确认后建议隔离（移动到 quarantine 目录）而非直接删除
- 记录文件 hash:
md5sum <file> - 检查同目录其他文件和访问日志
输出格式
## Webshell 狩猎报告
- 扫描范围: [目录路径]
- 可疑文件: [路径 | 修改时间 | 风险特征]
- 确认木马: [路径 | 类型 | 内容摘要]
- 建议措施: [隔离/删除/监控]
注意事项
- jQuery/CMS 核心文件常有 eval，需结合路径判断
- 优先行为分析（mtime）而非纯签名
- 高危删除操作需用户确认
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 4d ago First seen · 63 lines · 40 tokens per session scan A 14e4b5c866e6
webshell-hunt is a skill published in the GitHub repository asaotomo/DeepSentry (24 stars, last pushed today), licensed Apache-2.0. It adds 40 tokens to every session and 573 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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