feat: 添加VNC扫描功能

Core/Registry.go

@@ -15,7 +15,6 @@ func init() {
 
 	Common.RegisterPlugin("ssh", Common.ScanPlugin{
 		Name:     "SSH",
-		Port:     22,
 		ScanFunc: Plugins.SshScan,
 	})
 
@@ -67,6 +66,12 @@ func init() {
 		ScanFunc: Plugins.PostgresScan,
 	})
 
+	Common.RegisterPlugin("vnc", Common.ScanPlugin{
+		Name:     "VNC",
+		Port:     5900,
+		ScanFunc: Plugins.VncScan,
+	})
+
 	Common.RegisterPlugin("redis", Common.ScanPlugin{
 		Name:     "Redis",
 		Port:     6379,
@@ -106,7 +111,6 @@ func init() {
 
 	Common.RegisterPlugin("web", Common.ScanPlugin{
 		Name:     "WebTitle",
-		Port:     0,
 		ScanFunc: Plugins.WebTitle,
 	})
 
@@ -124,7 +128,6 @@ func init() {
 
 	Common.RegisterPlugin("localinfo", Common.ScanPlugin{
 		Name:     "LocalInfo",
-		Port:     0,
 		ScanFunc: Plugins.LocalInfoScan,
 	})
 }

Plugins/VNC.go

@@ -0,0 +1,81 @@
+package Plugins
+
+import (
+	"fmt"
+	"github.com/mitchellh/go-vnc"
+	"github.com/shadow1ng/fscan/Common"
+	"net"
+	"time"
+)
+
+// VncScan 执行VNC服务扫描及密码尝试
+func VncScan(info *Common.HostInfo) (tmperr error) {
+	// 如果已开启暴力破解则直接返回
+	if Common.IsBrute {
+		return
+	}
+
+	modename := "vnc"
+	starttime := time.Now().Unix()
+
+	// 遍历密码字典尝试连接
+	for _, pass := range Common.Passwords {
+		flag, err := VncConn(info, pass)
+
+		if flag && err == nil {
+			// 连接成功，记录结果
+			result := fmt.Sprintf("[+] %s://%v:%v 密码: %v", modename, info.Host, info.Ports, pass)
+			Common.LogSuccess(result)
+			return err
+		}
+
+		// 连接失败，记录错误信息
+		errlog := fmt.Sprintf("[-] %s://%v:%v 尝试密码: %v 错误: %v",
+			modename, info.Host, info.Ports, pass, err)
+		Common.LogError(errlog)
+		tmperr = err
+
+		// 检查是否需要中断扫描
+		if Common.CheckErrs(err) {
+			return err
+		}
+
+		// 检查是否超时
+		if time.Now().Unix()-starttime > (int64(len(Common.Passwords)) * Common.Timeout) {
+			return fmt.Errorf("扫描超时")
+		}
+	}
+	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
+}

go.mod

@@ -38,6 +38,7 @@ require (
 	github.com/lunixbochs/struc v0.0.0-20200707160740-784aaebc1d40 // indirect
 	github.com/mattn/go-colorable v0.0.9 // indirect
 	github.com/mattn/go-isatty v0.0.3 // indirect
+	github.com/mitchellh/go-vnc v0.0.0-20150629162542-723ed9867aed // indirect
 	github.com/stoewer/go-strcase v1.2.0 // indirect
 	go.uber.org/atomic v1.5.0 // indirect
 	go.uber.org/multierr v1.3.0 // indirect

go.sum

@@ -168,6 +168,8 @@ github.com/mitchellh/cli v1.0.0/go.mod h1:hNIlj7HEI86fIcpObd7a0FcrxTWetlwJDGcceT
 github.com/mitchellh/go-homedir v1.0.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/go-testing-interface v1.0.0/go.mod h1:kRemZodwjscx+RGhAo8eIhFbs2+BFgRtFPeD/KE+zxI=
+github.com/mitchellh/go-vnc v0.0.0-20150629162542-723ed9867aed h1:FI2NIv6fpef6BQl2u3IZX/Cj20tfypRF4yd+uaHOMtI=
+github.com/mitchellh/go-vnc v0.0.0-20150629162542-723ed9867aed/go.mod h1:3rdaFaCv4AyBgu5ALFM0+tSuHrBh6v692nyQe3ikrq0=
 github.com/mitchellh/gox v0.4.0/go.mod h1:Sd9lOJ0+aimLBi73mGofS1ycjY8lL3uZM3JPS42BGNg=
 github.com/mitchellh/iochan v1.0.0/go.mod h1:JwYml1nuB7xOzsp52dPpHFffvOCDupsG0QubkSMEySY=
 github.com/mitchellh/mapstructure v0.0.0-20160808181253-ca63d7c062ee/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=