Go语言在渗透测试中的应用探讨

go mod init github.com/myusername/netscan

import (
    "context"
    "fmt"
    "log"
    "net"
    "time"
)

func scan(host string, port int) {
    // 创建连接并设置超时
    conn, err := net.DialTimeout("tcp", host+":"+fmt.Sprintf("%d", port), 3*time.Second)
    if err != nil {
        log.Printf("Error connecting to %s:%d: %s", host, port, err)
        return
    }

    // 如果连接成功，则端口处于打开状态
    log.Printf("Port %d on %s is open", port, host)

    // 关闭连接
    if err := conn.Close(); err != nil {
        log.Printf("Error closing connection: %s", err)
    }
}

func main() {
    // 获取目标和端口范围
    target := "example.com"
    ports := []int{21, 22, 80, 443}

    // 遍历端口并执行扫描
    for _, port := range ports {
        go scan(target, port)
    }

    // 等待扫描完成
    time.Sleep(200 * time.Millisecond)
}

go run main.go

Port 22 on example.com is open
Port 80 on example.com is open
Port 443 on example.com is open