package Plugins import ( "fmt" "github.com/mitchellh/go-vnc" "github.com/shadow1ng/fscan/Common" "net" "time" ) func VncScan(info *Common.HostInfo) (tmperr error) { if Common.DisableBrute { return } maxRetries := Common.MaxRetries modename := "vnc" Common.LogDebug(fmt.Sprintf("开始扫描 %v:%v", info.Host, info.Ports)) totalPass := len(Common.Passwords) Common.LogDebug(fmt.Sprintf("开始尝试密码组合 (总密码数: %d)", totalPass)) tried := 0 // 遍历所有密码 for _, pass := range Common.Passwords { tried++ Common.LogDebug(fmt.Sprintf("[%d/%d] 尝试密码: %s", tried, totalPass, pass)) // 重试循环 for retryCount := 0; retryCount < maxRetries; retryCount++ { if retryCount > 0 { Common.LogDebug(fmt.Sprintf("第%d次重试密码: %s", retryCount+1, pass)) } // 执行VNC连接 done := make(chan struct { success bool err error }, 1) go func(pass string) { success, err := VncConn(info, pass) select { case done <- struct { success bool err error }{success, err}: default: } }(pass) // 等待结果或超时 var err error select { case result := <-done: err = result.err if result.success && err == nil { // 连接成功 successLog := fmt.Sprintf("%s://%v:%v 密码: %v", modename, info.Host, info.Ports, pass) Common.LogSuccess(successLog) return nil } case <-time.After(time.Duration(Common.Timeout) * time.Second): err = fmt.Errorf("连接超时") } // 处理错误情况 if err != nil { errlog := fmt.Sprintf("%s://%v:%v 尝试密码: %v 错误: %v", modename, info.Host, info.Ports, pass, err) Common.LogError(errlog) // 检查是否是需要重试的错误 if retryErr := Common.CheckErrs(err); retryErr != nil { if retryCount == maxRetries-1 { continue } continue // 继续重试 } } break // 如果不需要重试,跳出重试循环 } } Common.LogDebug(fmt.Sprintf("扫描完成,共尝试 %d 个密码", tried)) return tmperr } // VncConn 尝试建立VNC连接 func VncConn(info *Common.HostInfo, pass string) (flag bool, err error) { flag = false Host, Port := info.Host, info.Ports // 建立TCP连接 conn, err := net.DialTimeout("tcp", fmt.Sprintf("%s:%s", Host, Port), time.Duration(Common.Timeout)*time.Second) if err != nil { return } defer conn.Close() // 配置VNC客户端 config := &vnc.ClientConfig{ Auth: []vnc.ClientAuth{ &vnc.PasswordAuth{ Password: pass, }, }, } // 尝试VNC认证 client, err := vnc.Client(conn, config) if err == nil { defer client.Close() flag = true } return }