mirror of
https://github.com/mandiant/gopacket
synced 2026-06-21 13:57:02 +00:00
Jacob Paullus
100 lines
2.6 KiB
Go
100 lines
2.6 KiB
Go
// Copyright 2026 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package relay
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import (
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"encoding/json"
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"fmt"
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"log"
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"net"
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"net/http"
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)
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// APIServer exposes relay session data as a REST API, matching Impacket's
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// Flask server on port 9090 when SOCKS mode is enabled.
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type APIServer struct {
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addr string
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listener net.Listener
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socks *SOCKSServer
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server *http.Server
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}
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// NewAPIServer creates a new REST API server.
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func NewAPIServer(addr string, socks *SOCKSServer) *APIServer {
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return &APIServer{
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addr: addr,
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socks: socks,
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}
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}
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// Start begins serving the REST API in a background goroutine.
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func (a *APIServer) Start() error {
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listener, err := net.Listen("tcp", a.addr)
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if err != nil {
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return fmt.Errorf("REST API listen on %s: %v", a.addr, err)
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}
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a.listener = listener
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mux := http.NewServeMux()
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mux.HandleFunc("/", a.handleRoot)
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mux.HandleFunc("/ntlmrelayx/api/v1.0/relays", a.handleRelays)
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a.server = &http.Server{Handler: mux}
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log.Printf("[*] REST API started on %s", a.addr)
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go a.server.Serve(listener)
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return nil
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}
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// Stop shuts down the REST API server.
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func (a *APIServer) Stop() {
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if a.server != nil {
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a.server.Close()
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}
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}
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// handleRoot serves "Relays available: N!" matching Impacket's index route.
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func (a *APIServer) handleRoot(w http.ResponseWriter, r *http.Request) {
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if r.URL.Path != "/" {
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http.NotFound(w, r)
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return
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}
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relays := a.socks.ListRelayDetails()
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fmt.Fprintf(w, "Relays available: %d!", len(relays))
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}
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// handleRelays returns relay sessions as a JSON array-of-arrays matching
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// Impacket's /ntlmrelayx/api/v1.0/relays format:
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//
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// [["SMB","192.168.1.100","DOMAIN\\COMPUTER$","TRUE","445","0"],...]
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func (a *APIServer) handleRelays(w http.ResponseWriter, r *http.Request) {
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relays := a.socks.ListRelayDetails()
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result := make([][]string, 0, len(relays))
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for _, ri := range relays {
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result = append(result, []string{
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ri.Protocol,
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ri.Target,
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ri.Username,
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ri.AdminStatus,
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ri.Port,
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"0", // client_id placeholder — matches Impacket's 6-field format
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})
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(result)
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}
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