mirror of
https://github.com/shadow1ng/fscan.git
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124 lines
3.1 KiB
Go
124 lines
3.1 KiB
Go
package Plugins
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import (
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"bufio"
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"crypto/tls"
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"fmt"
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"github.com/shadow1ng/fscan/Common"
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"net"
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"strings"
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"time"
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)
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func POP3Scan(info *Common.HostInfo) (tmperr error) {
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if Common.DisableBrute {
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return
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}
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starttime := time.Now().Unix()
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for _, user := range Common.Userdict["pop3"] {
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for _, pass := range Common.Passwords {
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pass = strings.Replace(pass, "{user}", user, -1)
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flag, err := POP3Conn(info, user, pass)
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if flag && err == nil {
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return err
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}
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errlog := fmt.Sprintf("[-] POP3服务 %v:%v 尝试失败 用户名: %v 密码: %v 错误: %v", info.Host, info.Ports, user, pass, err)
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Common.LogError(errlog)
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tmperr = err
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if Common.CheckErrs(err) {
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return err
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}
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if time.Now().Unix()-starttime > (int64(len(Common.Userdict["pop3"])*len(Common.Passwords)) * Common.Timeout) {
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return err
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}
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}
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}
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return tmperr
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}
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func POP3Conn(info *Common.HostInfo, user string, pass string) (bool, error) {
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host, port := info.Host, info.Ports
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timeout := time.Duration(Common.Timeout) * time.Second
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addr := fmt.Sprintf("%s:%s", host, port)
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// 首先尝试普通连接
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conn, err := net.DialTimeout("tcp", addr, timeout)
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if err == nil {
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if flag, err := tryPOP3Auth(conn, host, port, user, pass, timeout, false); err == nil {
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return flag, nil
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}
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conn.Close()
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}
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// 如果普通连接失败，尝试TLS连接
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tlsConfig := &tls.Config{
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InsecureSkipVerify: true,
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}
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conn, err = tls.DialWithDialer(&net.Dialer{Timeout: timeout}, "tcp", addr, tlsConfig)
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if err != nil {
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return false, fmt.Errorf("连接失败: %v", err)
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}
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defer conn.Close()
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return tryPOP3Auth(conn, host, port, user, pass, timeout, true)
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}
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func tryPOP3Auth(conn net.Conn, host string, port string, user string, pass string, timeout time.Duration, isTLS bool) (bool, error) {
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reader := bufio.NewReader(conn)
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conn.SetDeadline(time.Now().Add(timeout))
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// 读取欢迎信息
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_, err := reader.ReadString('\n')
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if err != nil {
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return false, fmt.Errorf("读取欢迎消息失败: %v", err)
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}
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// 发送用户名
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conn.SetDeadline(time.Now().Add(timeout))
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_, err = conn.Write([]byte(fmt.Sprintf("USER %s\r\n", user)))
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if err != nil {
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return false, fmt.Errorf("发送用户名失败: %v", err)
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}
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// 读取用户名响应
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conn.SetDeadline(time.Now().Add(timeout))
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response, err := reader.ReadString('\n')
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if err != nil {
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return false, fmt.Errorf("读取用户名响应失败: %v", err)
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}
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if !strings.Contains(response, "+OK") {
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return false, fmt.Errorf("用户名无效")
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}
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// 发送密码
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conn.SetDeadline(time.Now().Add(timeout))
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_, err = conn.Write([]byte(fmt.Sprintf("PASS %s\r\n", pass)))
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if err != nil {
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return false, fmt.Errorf("发送密码失败: %v", err)
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}
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// 读取密码响应
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conn.SetDeadline(time.Now().Add(timeout))
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response, err = reader.ReadString('\n')
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if err != nil {
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return false, fmt.Errorf("读取密码响应失败: %v", err)
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}
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if strings.Contains(response, "+OK") {
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result := fmt.Sprintf("[+] POP3服务 %v:%v 爆破成功 用户名: %v 密码: %v", host, port, user, pass)
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if isTLS {
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result += " (TLS)"
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}
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Common.LogSuccess(result)
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return true, nil
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}
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return false, fmt.Errorf("认证失败")
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}
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