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What so_replace_bytes does on SO Analyzer MCP
AI agents use so_replace_bytes to create or update resources in SO Analyzer MCP, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your SO Analyzer MCP environment.
Why so_replace_bytes is rated Medium
While byte replacement could theoretically be reversible (backed up files could be restored), the tool's purpose in a decompilation/analysis context is to patch binaries in-place, modifying executable code or data structures.
From the tool's definition Tool description '查找并替换字节' (Find and replace bytes) indicates direct binary modification of SO/native library files. The server context emphasizes 'binary modification' capabilities, and this tool enables irreversible patching of compiled native code.
Attacks that exploit this kind of access
The rule that runs so_replace_bytes safely
PolicyLayer is an MCP gateway: it sits between your AI agents and SO Analyzer MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For so_replace_bytes, this is the rule to start with:
so_replace_bytes stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect SO Analyzer MCP, apply this rule, and every so_replace_bytes call is checked against it from then on.
Questions about so_replace_bytes
查找并替换字节. It is categorised as a Write tool in the SO Analyzer MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the SO Analyzer MCP server in PolicyLayer and add a rule for so_replace_bytes: 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 SO Analyzer MCP. Nothing to install.
so_replace_bytes is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the so_replace_bytes 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 so_replace_bytes. 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.
so_replace_bytes is provided by the SO Analyzer MCP server (1600822305/so-analyzer-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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