ad_asreproast
Perform AS-REP Roasting to get hashes for accounts with pre-auth disabled.
This record as markdown: /tools/zebbern-zebbern-kali-mcp/ad-asreproast.md
What ad_asreproast does on Zebbern Kali MCP
AI agents invoke ad_asreproast to trigger actions in Zebbern Kali MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why ad_asreproast is rated High
AS-REP Roasting is an active credential harvesting attack against Active Directory Kerberos infrastructure. It queries the KDC for AS-REP responses for accounts that don't require pre-authentication, returning crackable password hashes. This is an offensive security operation that triggers external network operations against authentication systems.
From the tool's definition Perform AS-REP Roasting to get hashes for accounts with pre-auth disabled
Attacks that exploit this kind of access
The rule that runs ad_asreproast safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Zebbern Kali MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For ad_asreproast, this is the rule to start with:
ad_asreproast stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Zebbern Kali MCP, apply this rule, and every ad_asreproast call is checked against it from then on.
Questions about ad_asreproast
Perform AS-REP Roasting to get hashes for accounts with pre-auth disabled. It is categorised as a Execute tool in the Zebbern Kali MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Zebbern Kali MCP server in PolicyLayer and add a rule for ad_asreproast: 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 Zebbern Kali MCP. Nothing to install.
ad_asreproast is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the ad_asreproast 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 ad_asreproast. 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.
ad_asreproast is provided by the Zebbern Kali MCP server (zebbern/zebbern-kali-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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