nemu_scan_memory
Scan emulated memory for a byte pattern (like Volatility). Searches a guest address range for an exact byte match using Boyer-Moore-Horspool. Returns a list of matched addresses. Skips unmapped regions silently — use nemu_mem_map to extend the scan range if needed.
This record as markdown: /tools/io-github-vmoranv-jshookmcp/nemu-scan-memory.md
What nemu_scan_memory does on Jshookmcp
AI agents call nemu_scan_memory to retrieve information from Jshookmcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why nemu_scan_memory is rated Low
Memory scanning is read-only forensic analysis without side effects or code execution capabilities.
From the tool's definition Scan emulated memory for byte pattern, searches guest address range
Attacks that exploit this kind of access
The rule that runs nemu_scan_memory safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Jshookmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For nemu_scan_memory, this is the rule to start with:
nemu_scan_memory is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Jshookmcp, apply this rule, and every nemu_scan_memory call is checked against it from then on.
Questions about nemu_scan_memory
Scan emulated memory for a byte pattern (like Volatility). Searches a guest address range for an exact byte match using Boyer-Moore-Horspool. Returns a list of matched addresses. Skips unmapped regions silently — use nemu_mem_map to extend the scan range if needed. It is categorised as a Read tool in the Jshookmcp MCP Server, which means it retrieves data without modifying state.
Register the Jshook MCP server in PolicyLayer and add a rule for nemu_scan_memory: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Jshookmcp. Nothing to install.
nemu_scan_memory is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the nemu_scan_memory rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for nemu_scan_memory. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
nemu_scan_memory is provided by the Jshook MCP server (@jshookmcp/jshook). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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