Merge pull request #4647 from 5amu/remove-kerberos-dependency

switch dependency for kerberos js module (ropnop/gorkb5 -> jcmturner/gokrb5)

go.mod

@@ -93,7 +93,6 @@ require (
 	github.com/projectdiscovery/utils v0.0.77
 	github.com/projectdiscovery/wappalyzergo v0.0.109
 	github.com/redis/go-redis/v9 v9.1.0
-	github.com/ropnop/gokrb5/v8 v8.0.0-20201111231119-729746023c02
 	github.com/sashabaranov/go-openai v1.15.3
 	github.com/stretchr/testify v1.8.4
 	github.com/zmap/zgrab2 v0.1.8-0.20230806160807-97ba87c0e706
@@ -153,14 +152,14 @@ require (
 	github.com/google/go-github/v30 v30.1.0 // indirect
 	github.com/google/pprof v0.0.0-20230821062121-407c9e7a662f // indirect
 	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 // indirect
-	github.com/hashicorp/go-uuid v1.0.2 // indirect
+	github.com/hashicorp/go-uuid v1.0.3 // indirect
 	github.com/hashicorp/go-version v1.6.0 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.6 // indirect
 	github.com/hbakhtiyor/strsim v0.0.0-20190107154042-4d2bbb273edf // indirect
 	github.com/jcmturner/aescts/v2 v2.0.0 // indirect
 	github.com/jcmturner/dnsutils/v2 v2.0.0 // indirect
-	github.com/jcmturner/gofork v1.0.0 // indirect
+	github.com/jcmturner/gofork v1.7.6 // indirect
-	github.com/jcmturner/rpc/v2 v2.0.2 // indirect
+	github.com/jcmturner/rpc/v2 v2.0.3 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/jmespath/go-jmespath v0.4.0 // indirect
 	github.com/kataras/jwt v0.1.10 // indirect
@@ -316,6 +315,7 @@ require (
 	github.com/golang-jwt/jwt v3.2.2+incompatible // indirect
 	github.com/imdario/mergo v0.3.16 // indirect
 	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect
+	github.com/jcmturner/gokrb5/v8 v8.4.4
 	github.com/kevinburke/ssh_config v1.2.0 // indirect
 	github.com/labstack/gommon v0.4.0 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect

go.sum

@@ -504,7 +504,7 @@ github.com/gorilla/css v1.0.1/go.mod h1:BvnYkspnSzMmwRK+b8/xgNPLiIuNZr6vbZBTPQ2A
 github.com/gorilla/mux v1.6.2/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
 github.com/gorilla/mux v1.7.3/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
 github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
-github.com/gorilla/sessions v1.2.0/go.mod h1:dk2InVEVJ0sfLlnXv9EAgkf6ecYs/i80K/zI+bUmuGM=
+github.com/gorilla/sessions v1.2.1/go.mod h1:dk2InVEVJ0sfLlnXv9EAgkf6ecYs/i80K/zI+bUmuGM=
 github.com/gorilla/websocket v0.0.0-20170926233335-4201258b820c/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
 github.com/grpc-ecosystem/go-grpc-middleware v1.0.1-0.20190118093823-f849b5445de4/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
 github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgfV/d3M/q6VIi02HzZEHgUlZvzk=
@@ -529,8 +529,9 @@ github.com/hashicorp/go-sockaddr v1.0.0/go.mod h1:7Xibr9yA9JjQq1JpNB2Vw7kxv8xerX
 github.com/hashicorp/go-syslog v1.0.0/go.mod h1:qPfqrKkXGihmCqbJM2mZgkZGvKG1dFdvsLplgctolz4=
 github.com/hashicorp/go-uuid v1.0.0/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro=
 github.com/hashicorp/go-uuid v1.0.1/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro=
-github.com/hashicorp/go-uuid v1.0.2 h1:cfejS+Tpcp13yd5nYHWDI6qVCny6wyX2Mt5SGur2IGE=
 github.com/hashicorp/go-uuid v1.0.2/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro=
+github.com/hashicorp/go-uuid v1.0.3 h1:2gKiV6YVmrJ1i2CKKa9obLvRieoRGviZFL26PcT/Co8=
+github.com/hashicorp/go-uuid v1.0.3/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro=
 github.com/hashicorp/go-version v1.2.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
 github.com/hashicorp/go-version v1.6.0 h1:feTTfFNnjP967rlCxM/I9g701jU+RN74YKx2mOkIeek=
 github.com/hashicorp/go-version v1.6.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
@@ -569,12 +570,14 @@ github.com/jcmturner/aescts/v2 v2.0.0 h1:9YKLH6ey7H4eDBXW8khjYslgyqG2xZikXP0EQFK
 github.com/jcmturner/aescts/v2 v2.0.0/go.mod h1:AiaICIRyfYg35RUkr8yESTqvSy7csK90qZ5xfvvsoNs=
 github.com/jcmturner/dnsutils/v2 v2.0.0 h1:lltnkeZGL0wILNvrNiVCR6Ro5PGU/SeBvVO/8c/iPbo=
 github.com/jcmturner/dnsutils/v2 v2.0.0/go.mod h1:b0TnjGOvI/n42bZa+hmXL+kFJZsFT7G4t3HTlQ184QM=
-github.com/jcmturner/gofork v1.0.0 h1:J7uCkflzTEhUZ64xqKnkDxq3kzc96ajM1Gli5ktUem8=
+github.com/jcmturner/gofork v1.7.6 h1:QH0l3hzAU1tfT3rZCnW5zXl+orbkNMMRGJfdJjHVETg=
-github.com/jcmturner/gofork v1.0.0/go.mod h1:MK8+TM0La+2rjBD4jE12Kj1pCCxK7d2LK/UM3ncEo0o=
+github.com/jcmturner/gofork v1.7.6/go.mod h1:1622LH6i/EZqLloHfE7IeZ0uEJwMSUyQ/nDd82IeqRo=
 github.com/jcmturner/goidentity/v6 v6.0.1 h1:VKnZd2oEIMorCTsFBnJWbExfNN7yZr3EhJAxwOkZg6o=
 github.com/jcmturner/goidentity/v6 v6.0.1/go.mod h1:X1YW3bgtvwAXju7V3LCIMpY0Gbxyjn/mY9zx4tFonSg=
-github.com/jcmturner/rpc/v2 v2.0.2 h1:gMB4IwRXYsWw4Bc6o/az2HJgFUA1ffSh90i26ZJ6Xl0=
+github.com/jcmturner/gokrb5/v8 v8.4.4 h1:x1Sv4HaTpepFkXbt2IkL29DXRf8sOfZXo8eRKh687T8=
-github.com/jcmturner/rpc/v2 v2.0.2/go.mod h1:VUJYCIDm3PVOEHw8sgt091/20OJjskO/YJki3ELg/Hc=
+github.com/jcmturner/gokrb5/v8 v8.4.4/go.mod h1:1btQEpgT6k+unzCwX1KdWMEwPPkkgBtP+F6aCACiMrs=
+github.com/jcmturner/rpc/v2 v2.0.3 h1:7FXXj8Ti1IaVFpSAziCZWNzbNuZmnvw/i6CqLNdWfZY=
+github.com/jcmturner/rpc/v2 v2.0.3/go.mod h1:VUJYCIDm3PVOEHw8sgt091/20OJjskO/YJki3ELg/Hc=
 github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E=
 github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
@@ -908,8 +911,6 @@ github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFR
 github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
 github.com/rogpeppe/go-internal v1.11.0 h1:cWPaGQEPrBb5/AsnsZesgZZ9yb1OQ+GOISoDNXVBh4M=
 github.com/rogpeppe/go-internal v1.11.0/go.mod h1:ddIwULY96R17DhadqLgMfk9H9tvdUzkipdSkR5nkCZA=
-github.com/ropnop/gokrb5/v8 v8.0.0-20201111231119-729746023c02 h1:Nk74A6E84pynxLN74hIrQ7Q3cS0/0L5I7coOLNSFAMs=
-github.com/ropnop/gokrb5/v8 v8.0.0-20201111231119-729746023c02/go.mod h1:OGEfzIZJs5m/VgAb1BvWR8fH17RTQWx84HTB1koGf9s=
 github.com/rs/xid v1.5.0 h1:mKX4bl4iPYJtEIxp6CYiUuLQ/8DYMoz0PUdtGgMFRVc=
 github.com/rs/xid v1.5.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
 github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
@@ -1139,7 +1140,6 @@ golang.org/x/crypto v0.0.0-20190513172903-22d7a77e9e5f/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.0.0-20200117160349-530e935923ad/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200510223506-06a226fb4e37/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
@@ -1150,6 +1150,7 @@ golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5y
 golang.org/x/crypto v0.0.0-20211209193657-4570a0811e8b/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/crypto v0.3.1-0.20221117191849-2c476679df9a/go.mod h1:hebNnKkNXi2UzZN1eVRvBB7co0a+JxK6XbPiWVs/3J4=
+golang.org/x/crypto v0.6.0/go.mod h1:OFC/31mSvZgRz0V1QTNCzfAI1aIRzbiufJtkMIlEp58=
 golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU=
 golang.org/x/crypto v0.11.0/go.mod h1:xgJhtzW8F9jGdVFWZESrid1U1bjeNy4zgy5cRr/CIio=
 golang.org/x/crypto v0.17.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq4=

pkg/js/devtools/bindgen/cmd/bindgen/main.go

@@ -16,12 +16,14 @@ var (
 	dir           string
 	generatedDir  string
 	targetModules string
+	goOnly        bool
 )
 
 func main() {
 	flag.StringVar(&dir, "dir", "libs", "directory to process")
 	flag.StringVar(&generatedDir, "out", "generated", "directory to output generated files")
 	flag.StringVar(&targetModules, "target", "", "target modules to generate")
+	flag.BoolVar(&goOnly, "go", false, "generate only go files")
 	flag.Parse()
 	log.SetFlags(0)
 	if !fileutil.FolderExists(dir) {
@@ -52,9 +54,11 @@ func process() error {
 		}
 
 		prefixed := "lib" + module
-		err = data.WriteJSTemplate(filepath.Join(generatedDir, "js/"+prefixed), module)
+		if !goOnly {
-		if err != nil {
+			err = data.WriteJSTemplate(filepath.Join(generatedDir, "js/"+prefixed), module)
-			return fmt.Errorf("could not write js template: %v", err)
+			if err != nil {
+				return fmt.Errorf("could not write js template: %v", err)
+			}
 		}
 		err = data.WriteGoTemplate(path.Join(generatedDir, "go/"+prefixed), module)
 		if err != nil {

pkg/js/devtools/bindgen/generator.go

@@ -345,6 +345,10 @@ func (d *TemplateData) handleStarExpr(v *ast.StarExpr) string {
 }
 
 func (d *TemplateData) collectTypeFromExternal(pkg *types.Package, pkgName, name string) {
+	if pkgName == "goja" {
+		// no need to attempt to collect types from goja ( this is metadata )
+		return
+	}
 	extra := PackageTypeExtra{
 		Fields: make(map[string]string),
 	}

pkg/js/generated/go/libkerberos/kerberos.go

@@ -15,16 +15,25 @@ func init() {
 	module.Set(
 		gojs.Objects{
 			// Functions
+			"ASRepToHashcat":              lib_kerberos.ASRepToHashcat,
+			"CheckKrbError":               lib_kerberos.CheckKrbError,
+			"NewKerberosClient":           lib_kerberos.NewKerberosClient,
+			"NewKerberosClientFromString": lib_kerberos.NewKerberosClientFromString,
+			"SendToKDC":                   lib_kerberos.SendToKDC,
+			"TGStoHashcat":                lib_kerberos.TGStoHashcat,
 
 			// Var and consts
 
 			// Types (value type)
+			"Client":                lib_kerberos.NewKerberosClient,
 			"EnumerateUserResponse": func() lib_kerberos.EnumerateUserResponse { return lib_kerberos.EnumerateUserResponse{} },
-			"KerberosClient":        func() lib_kerberos.KerberosClient { return lib_kerberos.KerberosClient{} },
+			"TGS":                   func() lib_kerberos.TGS { return lib_kerberos.TGS{} },
+			"Config":                func() lib_kerberos.Config { return lib_kerberos.Config{} },
 
 			// Types (pointer type)
-			"NewEnumerateUserResponse": func() *lib_kerberos.EnumerateUserResponse { return &lib_kerberos.EnumerateUserResponse{} },
+			// "NewClient":                func() *lib_kerberos.Client { return &lib_kerberos.Client{} },
-			"NewKerberosClient":        func() *lib_kerberos.KerberosClient { return &lib_kerberos.KerberosClient{} },
+			// "NewEnumerateUserResponse": func() *lib_kerberos.EnumerateUserResponse { return &lib_kerberos.EnumerateUserResponse{} },
+			// "NewTGS":                   func() *lib_kerberos.TGS { return &lib_kerberos.TGS{} },
 		},
 	).Register()
 }

pkg/js/libs/kerberos/kerberos.go

@@ -1,193 +0,0 @@
-package kerberos
-
-import (
-	"encoding/hex"
-	"fmt"
-	"html/template"
-	"strings"
-
-	"github.com/projectdiscovery/nuclei/v3/pkg/protocols/common/protocolstate"
-	kclient "github.com/ropnop/gokrb5/v8/client"
-	kconfig "github.com/ropnop/gokrb5/v8/config"
-	"github.com/ropnop/gokrb5/v8/iana/errorcode"
-	"github.com/ropnop/gokrb5/v8/messages"
-)
-
-// Client is a kerberos client
-type KerberosClient struct{}
-
-type kerberosEnumUserOpts struct {
-	realm  string
-	config *kconfig.Config
-	kdcs   map[int]string
-}
-
-// Taken from kerbrute: https://github.com/ropnop/kerbrute/blob/master/session/session.go
-
-const krb5ConfigTemplateDNS = `[libdefaults]
-dns_lookup_kdc = true
-default_realm = {{.Realm}}
-`
-
-const krb5ConfigTemplateKDC = `[libdefaults]
-default_realm = {{.Realm}}
-[realms]
-{{.Realm}} = {
-	kdc = {{.DomainController}}
-	admin_server = {{.DomainController}}
-}
-`
-
-func buildKrb5Template(realm, domainController string) string {
-	data := map[string]interface{}{
-		"Realm":            realm,
-		"DomainController": domainController,
-	}
-	var kTemplate string
-	if domainController == "" {
-		kTemplate = krb5ConfigTemplateDNS
-	} else {
-		kTemplate = krb5ConfigTemplateKDC
-	}
-	t := template.Must(template.New("krb5ConfigString").Parse(kTemplate))
-	builder := &strings.Builder{}
-	if err := t.Execute(builder, data); err != nil {
-		panic(err)
-	}
-	return builder.String()
-}
-
-func newKerbrosEnumUserOpts(domain, domainController string) (*kerberosEnumUserOpts, error) {
-	realm := strings.ToUpper(domain)
-	configstring := buildKrb5Template(realm, domainController)
-	Config, err := kconfig.NewFromString(configstring)
-	if err != nil {
-		return nil, err
-	}
-	_, kdcs, err := Config.GetKDCs(realm, false)
-	if err != nil {
-		err = fmt.Errorf("couldn't find any KDCs for realm %s. Please specify a Domain Controller", realm)
-		return nil, err
-	}
-	return &kerberosEnumUserOpts{realm: realm, config: Config, kdcs: kdcs}, nil
-}
-
-// EnumerateUserResponse is the response from EnumerateUser
-type EnumerateUserResponse struct {
-	Valid     bool
-	ASREPHash string
-}
-
-// EnumerateUser returns true if the user exists in the domain
-//
-// If the user is not found, false is returned.
-// If the user is found, true is returned. Optionally, the AS-REP
-// hash is also returned if discovered.
-func (c *KerberosClient) EnumerateUser(domain, controller string, username string) (EnumerateUserResponse, error) {
-
-	resp := EnumerateUserResponse{}
-
-	if !protocolstate.IsHostAllowed(domain) {
-		// host is not valid according to network policy
-		return resp, protocolstate.ErrHostDenied.Msgf(domain)
-	}
-
-	opts, err := newKerbrosEnumUserOpts(domain, controller)
-	if err != nil {
-		return resp, err
-	}
-	cl := kclient.NewWithPassword(username, opts.realm, "foobar", opts.config, kclient.DisablePAFXFAST(true))
-	defer cl.Destroy()
-
-	req, err := messages.NewASReqForTGT(cl.Credentials.Domain(), cl.Config, cl.Credentials.CName())
-	if err != nil {
-		return resp, err
-	}
-	b, err := req.Marshal()
-	if err != nil {
-		return resp, err
-	}
-	rb, err := cl.SendToKDC(b, opts.realm)
-	if err == nil {
-		var ASRep messages.ASRep
-		err = ASRep.Unmarshal(rb)
-		if err != nil {
-			// something went wrong, it's not a valid response
-			return resp, err
-		}
-		hashcatString, _ := asRepToHashcat(ASRep)
-		resp.Valid = true
-		resp.ASREPHash = hashcatString
-		return resp, nil
-	}
-	e, ok := err.(messages.KRBError)
-	if !ok {
-		return resp, nil
-	}
-	switch e.ErrorCode {
-	case errorcode.KDC_ERR_C_PRINCIPAL_UNKNOWN:
-		return resp, nil
-	case errorcode.KDC_ERR_PREAUTH_REQUIRED:
-		resp.Valid = true
-		return resp, nil
-	default:
-		return resp, err
-
-	}
-}
-
-func asRepToHashcat(asrep messages.ASRep) (string, error) {
-	return fmt.Sprintf("$krb5asrep$%d$%s@%s:%s$%s",
-		asrep.EncPart.EType,
-		asrep.CName.PrincipalNameString(),
-		asrep.CRealm,
-		hex.EncodeToString(asrep.EncPart.Cipher[:16]),
-		hex.EncodeToString(asrep.EncPart.Cipher[16:])), nil
-}
-
-type TGS struct {
-	Ticket messages.Ticket
-	Hash   string
-}
-
-func (c *KerberosClient) GetServiceTicket(domain, controller string, username, password string, target, spn string) (TGS, error) {
-	var tgs TGS
-
-	if !protocolstate.IsHostAllowed(domain) {
-		// host is not valid according to network policy
-		return tgs, protocolstate.ErrHostDenied.Msgf(domain)
-	}
-
-	opts, err := newKerbrosEnumUserOpts(domain, controller)
-	if err != nil {
-		return tgs, err
-	}
-	cl := kclient.NewWithPassword(username, opts.realm, password, opts.config, kclient.DisablePAFXFAST(true))
-	defer cl.Destroy()
-
-	ticket, _, err := cl.GetServiceTicket(spn)
-	if err != nil {
-		return tgs, err
-	}
-
-	hashcat, err := tgsToHashcat(ticket, target)
-	if err != nil {
-		return tgs, err
-	}
-
-	return TGS{
-		Ticket: ticket,
-		Hash:   hashcat,
-	}, nil
-}
-
-func tgsToHashcat(tgs messages.Ticket, username string) (string, error) {
-	return fmt.Sprintf("$krb5tgs$%d$*%s$%s$%s*$%s$%s",
-		tgs.EncPart.EType,
-		username,
-		tgs.Realm,
-		strings.Join(tgs.SName.NameString[:], "/"),
-		hex.EncodeToString(tgs.EncPart.Cipher[:16]),
-		hex.EncodeToString(tgs.EncPart.Cipher[16:]),
-	), nil
-}

pkg/js/libs/kerberos/kerberosx.go

@@ -0,0 +1,313 @@
+package kerberos
+
+import (
+	"strings"
+
+	"github.com/dop251/goja"
+	kclient "github.com/jcmturner/gokrb5/v8/client"
+	kconfig "github.com/jcmturner/gokrb5/v8/config"
+	"github.com/jcmturner/gokrb5/v8/iana/errorcode"
+	"github.com/jcmturner/gokrb5/v8/messages"
+	"github.com/projectdiscovery/nuclei/v3/pkg/js/utils"
+	"github.com/projectdiscovery/nuclei/v3/pkg/protocols/common/protocolstate"
+	ConversionUtil "github.com/projectdiscovery/utils/conversion"
+)
+
+// Known Issues:
+// Hardcoded timeout in gokrb5 library
+// TGT / Session Handling not exposed
+
+// EnumerateUserResponse is the response from EnumerateUser
+type EnumerateUserResponse struct {
+	Valid     bool   `json:"valid"`
+	ASREPHash string `json:"asrep_hash"`
+	Error     string `json:"error"`
+}
+
+// TGS is the response from GetServiceTicket
+type TGS struct {
+	Ticket messages.Ticket `json:"ticket"`
+	Hash   string          `json:"hash"`
+	ErrMsg string          `json:"error"`
+}
+
+// Config is extra configuration for the kerberos client
+type Config struct {
+	ip      string
+	timeout int // in seconds
+}
+
+func (c *Config) SetIPAddress(ip string) *Config {
+	c.ip = ip
+	return c
+}
+
+func (c *Config) SetTimeout(timeout int) *Config {
+	c.timeout = timeout
+	return c
+}
+
+// Example Values for jargons
+// Realm: ACME.COM (Authentical zone / security area)
+// Domain: acme.com (Public website / domain)
+// DomainController: dc.acme.com (Domain Controller / Active Directory Server)
+// KDC: kdc.acme.com (Key Distribution Center / Authentication Server)
+
+// Updated Package definations and structure
+type Client struct {
+	nj         *utils.NucleiJS // helper functions/bindings
+	Krb5Config *kconfig.Config
+	Realm      string
+	config     Config
+}
+
+// Constructor for KerberosClient
+// if controller is empty a dns lookup for default kdc server will be performed
+// Signature: Client(domain, {controller})
+// @param domain: string
+// @param controller: string (optional)
+// When controller is empty or not given krb5 will perform a DNS lookup for the default KDC server
+// and retrieve its address from the DNS server
+func NewKerberosClient(call goja.ConstructorCall, runtime *goja.Runtime) *goja.Object {
+	// setup nucleijs utils
+	c := &Client{nj: utils.NewNucleiJS(runtime)}
+	c.nj.ObjectSig = "Client(domain, controller)" // will be included in error messages
+
+	// get arguments (type assertion is efficient than reflection)
+	// when accepting type as input like net.Conn we can use utils.GetArg
+	domain, _ := c.nj.GetArg(call.Arguments, 0).(string)
+	controller, _ := c.nj.GetArg(call.Arguments, 1).(string)
+
+	// validate arguments
+	c.nj.Require(domain != "", "domain cannot be empty")
+
+	cfg := kconfig.New()
+
+	if controller != "" {
+		// validate controller hostport
+		if !protocolstate.IsHostAllowed(controller) {
+			c.nj.Throw("domain controller address blacklisted by network policy")
+		}
+
+		tmp := strings.Split(controller, ":")
+		if len(tmp) == 1 {
+			tmp = append(tmp, "88")
+		}
+		realm := strings.ToUpper(domain)
+		cfg.LibDefaults.DefaultRealm = realm // set default realm
+		cfg.Realms = []kconfig.Realm{
+			{
+				Realm:         realm,
+				KDC:           []string{tmp[0] + ":" + tmp[1]},
+				AdminServer:   []string{tmp[0] + ":" + tmp[1]},
+				KPasswdServer: []string{tmp[0] + ":464"}, // default password server port
+			},
+		}
+		cfg.DomainRealm = make(kconfig.DomainRealm)
+	} else {
+		// if controller is empty use DNS lookup
+		cfg.LibDefaults.DNSLookupKDC = true
+		cfg.LibDefaults.DefaultRealm = strings.ToUpper(domain)
+		cfg.DomainRealm = make(kconfig.DomainRealm)
+	}
+	c.Krb5Config = cfg
+	c.Realm = strings.ToUpper(domain)
+
+	// Link Constructor to Client and return
+	return utils.LinkConstructor(call, runtime, c)
+}
+
+// NewKerberosClientFromString creates a new kerberos client from a string
+// by parsing krb5.conf
+// @param cfg: string
+// Example krb5.conf:
+// [libdefaults]
+// default_realm = ACME.COM
+// dns_lookup_kdc = true
+func NewKerberosClientFromString(cfg string) (*Client, error) {
+	config, err := kconfig.NewFromString(cfg)
+	if err != nil {
+		return nil, err
+	}
+	return &Client{Krb5Config: config}, nil
+}
+
+// SetConfig sets additional config for the kerberos client
+// Signature: SetConfig(cfg)
+// @param cfg: @Config
+// Note: as of now ip and timeout overrides are only supported
+// in EnumerateUser due to fastdialer but can be extended to other methods currently
+func (c *Client) SetConfig(cfg *Config) {
+	if cfg == nil {
+		c.nj.Throw("config cannot be nil")
+	}
+	c.config = *cfg
+}
+
+// EnumerateUser and attempt to get AS-REP hash by disabling PA-FX-FAST
+// Signature: EnumerateUser(username, {password})
+// @param username: string
+func (c *Client) EnumerateUser(username string) (EnumerateUserResponse, error) {
+	c.nj.Require(c.Krb5Config != nil, "Kerberos client not initialized")
+	password := "password"
+	// client does not actually attempt connection it manages state here
+	client := kclient.NewWithPassword(username, c.Realm, password, c.Krb5Config, kclient.DisablePAFXFAST(true))
+	defer client.Destroy()
+
+	// generate ASReq hash
+	req, err := messages.NewASReqForTGT(client.Credentials.Domain(), client.Config, client.Credentials.CName())
+	c.nj.HandleError(err, "failed to generate TGT request")
+
+	// marshal request
+	b, err := req.Marshal()
+	c.nj.HandleError(err, "failed to marshal TGT request")
+
+	data, err := SendToKDC(c, string(b))
+	rb := ConversionUtil.Bytes(data)
+
+	if err == nil {
+		var ASRep messages.ASRep
+		resp := EnumerateUserResponse{Valid: true}
+		err = ASRep.Unmarshal(rb)
+		if err != nil {
+			resp.Error = err.Error()
+			return resp, nil
+		}
+		hashcatString, _ := ASRepToHashcat(ASRep)
+		resp.ASREPHash = hashcatString
+		return resp, nil
+	}
+
+	resp := EnumerateUserResponse{}
+	e, ok := err.(messages.KRBError)
+	if !ok {
+		return resp, err
+	}
+	if e.ErrorCode == errorcode.KDC_ERR_PREAUTH_REQUIRED {
+		resp.Valid = true
+		resp.Error = errorcode.Lookup(e.ErrorCode)
+		return resp, nil
+	}
+	resp.Error = errorcode.Lookup(e.ErrorCode)
+	return resp, nil
+}
+
+// GetServiceTicket returns a TGS for a given user, password, target and SPN
+// Signature: GetServiceTicket(User, Pass, Target, SPN)
+// @param User: string
+// @param Pass: string
+// @param SPN: string Service Principal Name
+func (c *Client) GetServiceTicket(User, Pass, SPN string) (TGS, error) {
+	c.nj.Require(c.Krb5Config != nil, "Kerberos client not initialized")
+	c.nj.Require(User != "", "User cannot be empty")
+	c.nj.Require(Pass != "", "Pass cannot be empty")
+	c.nj.Require(SPN != "", "SPN cannot be empty")
+
+	if len(c.Krb5Config.Realms) > 0 {
+		// this means dc address was given
+		for _, r := range c.Krb5Config.Realms {
+			for _, kdc := range r.KDC {
+				if !protocolstate.IsHostAllowed(kdc) {
+					c.nj.Throw("KDC address %v blacklisted by network policy", kdc)
+				}
+			}
+			for _, kpasswd := range r.KPasswdServer {
+				if !protocolstate.IsHostAllowed(kpasswd) {
+					c.nj.Throw("Kpasswd address %v blacklisted by network policy", kpasswd)
+				}
+			}
+		}
+	} else {
+		// here net.Dialer is used instead of fastdialer hence get possible addresses
+		// and check if they are allowed by network policy
+		_, kdcs, _ := c.Krb5Config.GetKDCs(c.Realm, true)
+		for _, v := range kdcs {
+			if !protocolstate.IsHostAllowed(v) {
+				c.nj.Throw("KDC address %v blacklisted by network policy", v)
+			}
+		}
+	}
+
+	// client does not actually attempt connection it manages state here
+	client := kclient.NewWithPassword(User, c.Realm, Pass, c.Krb5Config, kclient.DisablePAFXFAST(true))
+	defer client.Destroy()
+
+	resp := TGS{}
+
+	ticket, _, err := client.GetServiceTicket(SPN)
+	resp.Ticket = ticket
+	if err != nil {
+		if code, ok := err.(messages.KRBError); ok {
+			resp.ErrMsg = errorcode.Lookup(code.ErrorCode)
+			return resp, err
+		}
+		return resp, err
+	}
+	// convert AS-REP to hashcat format
+	hashcat, err := TGStoHashcat(ticket, c.Realm)
+	if err != nil {
+		if code, ok := err.(messages.KRBError); ok {
+			resp.ErrMsg = errorcode.Lookup(code.ErrorCode)
+			return resp, err
+		}
+		return resp, err
+	}
+	resp.Ticket = ticket
+	resp.Hash = hashcat
+	return resp, nil
+}
+
+// // GetASREP returns AS-REP for a given user and password
+// // it contains Client's TGT , Principal and Session Key
+// // Signature: GetASREP(User, Pass)
+// // @param User: string
+// // @param Pass: string
+// func (c *Client) GetASREP(User, Pass string) messages.ASRep {
+// 	c.nj.Require(c.Krb5Config != nil, "Kerberos client not initialized")
+// 	c.nj.Require(User != "", "User cannot be empty")
+// 	c.nj.Require(Pass != "", "Pass cannot be empty")
+
+// 	if len(c.Krb5Config.Realms) > 0 {
+// 		// this means dc address was given
+// 		for _, r := range c.Krb5Config.Realms {
+// 			for _, kdc := range r.KDC {
+// 				if !protocolstate.IsHostAllowed(kdc) {
+// 					c.nj.Throw("KDC address blacklisted by network policy")
+// 				}
+// 			}
+// 			for _, kpasswd := range r.KPasswdServer {
+// 				if !protocolstate.IsHostAllowed(kpasswd) {
+// 					c.nj.Throw("Kpasswd address blacklisted by network policy")
+// 				}
+// 			}
+// 		}
+// 	} else {
+// 		// here net.Dialer is used instead of fastdialer hence get possible addresses
+// 		// and check if they are allowed by network policy
+// 		_, kdcs, _ := c.Krb5Config.GetKDCs(c.Realm, true)
+// 		for _, v := range kdcs {
+// 			if !protocolstate.IsHostAllowed(v) {
+// 				c.nj.Throw("KDC address blacklisted by network policy")
+// 			}
+// 		}
+// 	}
+
+// 	// login to get TGT
+// 	cl := kclient.NewWithPassword(User, c.Realm, Pass, c.Krb5Config, kclient.DisablePAFXFAST(true))
+// 	defer cl.Destroy()
+
+// 	// generate ASReq
+// 	ASReq, err := messages.NewASReqForTGT(cl.Credentials.Domain(), cl.Config, cl.Credentials.CName())
+// 	c.nj.HandleError(err, "failed to generate TGT request")
+
+// 	// exchange AS-REQ for AS-REP
+// 	resp, err := cl.ASExchange(c.Realm, ASReq, 0)
+// 	c.nj.HandleError(err, "failed to exchange AS-REQ")
+
+// 	// try to decrypt encrypted parts of the response and TGT
+// 	key, err := resp.DecryptEncPart(cl.Credentials)
+// 	if err == nil {
+// 		_ = resp.Ticket.Decrypt(key)
+// 	}
+// 	return resp
+// }

pkg/js/libs/kerberos/sendtokdc.go

@@ -0,0 +1,206 @@
+package kerberos
+
+// the following code is adapted from the original library
+// https://github.com/jcmturner/gokrb5/blob/855dbc707a37a21467aef6c0245fcf3328dc39ed/v8/client/network.go
+// it is copied here because the library does not export "SendToKDC()"
+
+import (
+	"context"
+	"encoding/binary"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"net"
+	"strings"
+	"time"
+
+	"github.com/jcmturner/gokrb5/v8/messages"
+	"github.com/projectdiscovery/nuclei/v3/pkg/protocols/common/protocolstate"
+)
+
+// sendtokdc.go deals with actual sending and receiving responses from KDC
+// SendToKDC sends a message to the KDC and returns the response.
+func SendToKDC(kclient *Client, msg string) (string, error) {
+	if kclient == nil || kclient.nj == nil || kclient.Krb5Config == nil || kclient.Realm == "" {
+		return "", fmt.Errorf("kerberos client is not initialized")
+	}
+	if kclient.config.timeout == 0 {
+		kclient.config.timeout = 5 // default timeout 5 seconds
+	}
+	var response []byte
+	var err error
+
+	response, err = sendToKDCTcp(kclient, msg)
+	if err == nil {
+		// if it related to tcp
+		bin, err := CheckKrbError(response)
+		if err == nil {
+			return string(bin), nil
+		}
+		// if it is krb error no need to do udp
+		if e, ok := err.(messages.KRBError); ok {
+			return string(response), e
+		}
+	}
+
+	// fallback to udp
+	response, err = sendToKDCUdp(kclient, msg)
+	if err == nil {
+		// if it related to udp
+		bin, err := CheckKrbError(response)
+		if err == nil {
+			return string(bin), nil
+		}
+	}
+	return string(response), err
+}
+
+// sendToKDCTcp sends a message to the KDC via TCP.
+func sendToKDCTcp(kclient *Client, msg string) ([]byte, error) {
+	_, kdcs, err := kclient.Krb5Config.GetKDCs(kclient.Realm, true)
+	kclient.nj.HandleError(err, "error getting KDCs")
+	kclient.nj.Require(len(kdcs) > 0, "no KDCs found")
+
+	var errs []string
+	for i := 1; i <= len(kdcs); i++ {
+		host, port, err := net.SplitHostPort(kdcs[i])
+		if err == nil && kclient.config.ip != "" {
+			// use that ip address instead of realm/domain for resolving
+			host = kclient.config.ip
+		}
+		tcpConn, err := protocolstate.Dialer.Dial(context.TODO(), "tcp", net.JoinHostPort(host, port))
+		if err != nil {
+			errs = append(errs, fmt.Sprintf("error establishing connection to %s: %v", kdcs[i], err))
+			continue
+		}
+		defer tcpConn.Close()
+		_ = tcpConn.SetDeadline(time.Now().Add(time.Duration(kclient.config.timeout) * time.Second)) //read and write deadline
+		rb, err := sendTCP(tcpConn.(*net.TCPConn), []byte(msg))
+		if err != nil {
+			errs = append(errs, fmt.Sprintf("error sending to %s: %v", kdcs[i], err))
+			continue
+		}
+		return rb, nil
+	}
+	if len(errs) > 0 {
+		return nil, fmt.Errorf("error sending to a KDC: %s", strings.Join(errs, "; "))
+	}
+	return nil, nil
+}
+
+// sendToKDCUdp sends a message to the KDC via UDP.
+func sendToKDCUdp(kclient *Client, msg string) ([]byte, error) {
+	_, kdcs, err := kclient.Krb5Config.GetKDCs(kclient.Realm, true)
+	kclient.nj.HandleError(err, "error getting KDCs")
+	kclient.nj.Require(len(kdcs) > 0, "no KDCs found")
+
+	var errs []string
+	for i := 1; i <= len(kdcs); i++ {
+		host, port, err := net.SplitHostPort(kdcs[i])
+		if err == nil && kclient.config.ip != "" {
+			// use that ip address instead of realm/domain for resolving
+			host = kclient.config.ip
+		}
+		udpConn, err := protocolstate.Dialer.Dial(context.TODO(), "udp", net.JoinHostPort(host, port))
+		if err != nil {
+			errs = append(errs, fmt.Sprintf("error establishing connection to %s: %v", kdcs[i], err))
+			continue
+		}
+		defer udpConn.Close()
+		_ = udpConn.SetDeadline(time.Now().Add(time.Duration(kclient.config.timeout) * time.Second)) //read and write deadline
+		rb, err := sendUDP(udpConn.(*net.UDPConn), []byte(msg))
+		if err != nil {
+			errs = append(errs, fmt.Sprintf("error sending to %s: %v", kdcs[i], err))
+			continue
+		}
+		return rb, nil
+	}
+	if len(errs) > 0 {
+		// fallback to tcp
+		return nil, fmt.Errorf("error sending to a KDC: %s", strings.Join(errs, "; "))
+	}
+	return nil, nil
+}
+
+// sendUDP sends bytes to connection over UDP.
+func sendUDP(conn *net.UDPConn, b []byte) ([]byte, error) {
+	var r []byte
+	defer conn.Close()
+	_, err := conn.Write(b)
+	if err != nil {
+		return r, fmt.Errorf("error sending to (%s): %v", conn.RemoteAddr().String(), err)
+	}
+	udpbuf := make([]byte, 4096)
+	n, _, err := conn.ReadFrom(udpbuf)
+	r = udpbuf[:n]
+	if err != nil {
+		return r, fmt.Errorf("sending over UDP failed to %s: %v", conn.RemoteAddr().String(), err)
+	}
+	if len(r) < 1 {
+		return r, fmt.Errorf("no response data from %s", conn.RemoteAddr().String())
+	}
+	return r, nil
+}
+
+// sendTCP sends bytes to connection over TCP.
+func sendTCP(conn *net.TCPConn, b []byte) ([]byte, error) {
+	defer conn.Close()
+	var r []byte
+	// RFC 4120 7.2.2 specifies the first 4 bytes indicate the length of the message in big endian order.
+	hb := make([]byte, 4)
+	binary.BigEndian.PutUint32(hb, uint32(len(b)))
+	b = append(hb, b...)
+
+	_, err := conn.Write(b)
+	if err != nil {
+		return r, fmt.Errorf("error sending to KDC (%s): %v", conn.RemoteAddr().String(), err)
+	}
+
+	sh := make([]byte, 4)
+	_, err = conn.Read(sh)
+	if err != nil {
+		return r, fmt.Errorf("error reading response size header: %v", err)
+	}
+	s := binary.BigEndian.Uint32(sh)
+
+	rb := make([]byte, s)
+	_, err = io.ReadFull(conn, rb)
+	if err != nil {
+		return r, fmt.Errorf("error reading response: %v", err)
+	}
+	if len(rb) < 1 {
+		return r, fmt.Errorf("no response data from KDC %s", conn.RemoteAddr().String())
+	}
+	return rb, nil
+}
+
+// CheckKrbError checks if the response bytes from the KDC are a KRBError.
+func CheckKrbError(b []byte) ([]byte, error) {
+	var KRBErr messages.KRBError
+	if err := KRBErr.Unmarshal(b); err == nil {
+		return b, KRBErr
+	}
+	return b, nil
+}
+
+// TGStoHashcat converts a TGS to a hashcat format.
+func TGStoHashcat(tgs messages.Ticket, username string) (string, error) {
+	return fmt.Sprintf("$krb5tgs$%d$*%s$%s$%s*$%s$%s",
+		tgs.EncPart.EType,
+		username,
+		tgs.Realm,
+		strings.Join(tgs.SName.NameString[:], "/"),
+		hex.EncodeToString(tgs.EncPart.Cipher[:16]),
+		hex.EncodeToString(tgs.EncPart.Cipher[16:]),
+	), nil
+}
+
+// ASRepToHashcat converts an AS-REP message to a hashcat format
+func ASRepToHashcat(asrep messages.ASRep) (string, error) {
+	return fmt.Sprintf("$krb5asrep$%d$%s@%s:%s$%s",
+		asrep.EncPart.EType,
+		asrep.CName.PrincipalNameString(),
+		asrep.CRealm,
+		hex.EncodeToString(asrep.EncPart.Cipher[:16]),
+		hex.EncodeToString(asrep.EncPart.Cipher[16:])), nil
+}

pkg/js/utils/nucleijs.go

@@ -0,0 +1,158 @@
+package utils
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+	"sync"
+
+	"github.com/dop251/goja"
+)
+
+// temporary on demand runtime to throw errors when vm is not available
+var (
+	tmpRuntime  *goja.Runtime
+	runtimeInit func() = sync.OnceFunc(func() {
+		tmpRuntime = goja.New()
+	})
+)
+
+func getRuntime() *goja.Runtime {
+	runtimeInit()
+	return tmpRuntime
+}
+
+// NucleiJS is js bindings that handles goja runtime related issue
+// and allows setting a defer statements to close resources
+type NucleiJS struct {
+	vm        *goja.Runtime
+	ObjectSig string
+}
+
+// NewNucleiJS creates a new nucleijs instance
+func NewNucleiJS(vm *goja.Runtime) *NucleiJS {
+	return &NucleiJS{vm: vm}
+}
+
+// internal runtime getter
+func (j *NucleiJS) runtime() *goja.Runtime {
+	if j == nil {
+		return getRuntime()
+	}
+	return j.vm
+}
+
+// see: https://arc.net/l/quote/wpenftpc for throwing docs
+
+// ThrowError throws an error in goja runtime if is not nil
+func (j *NucleiJS) ThrowError(err error) {
+	if err == nil {
+		return
+	}
+	panic(j.runtime().ToValue(err.Error()))
+}
+
+// HandleError handles error and throws a
+func (j *NucleiJS) HandleError(err error, msg ...string) {
+	if err == nil {
+		return
+	}
+	if len(msg) == 0 {
+		j.ThrowError(err)
+	}
+	j.Throw(fmt.Sprintf("%s: %s", strings.Join(msg, ":"), err.Error()))
+}
+
+// Throw throws an error in goja runtime
+func (j *NucleiJS) Throw(format string, args ...interface{}) {
+	panic(j.runtime().ToValue(fmt.Sprintf(format, args...)))
+}
+
+// GetArg returns argument at index from goja runtime if not found throws error
+func (j *NucleiJS) GetArg(args []goja.Value, index int) any {
+	if index >= len(args) {
+		j.Throw("Missing argument at index %v: %v", index, j.ObjectSig)
+	}
+	val := args[index]
+	if goja.IsUndefined(val) {
+		j.Throw("Missing argument at index %v: %v", index, j.ObjectSig)
+	}
+	return val.Export()
+}
+
+// GetArgSafe returns argument at index from goja runtime if not found returns default value
+func (j *NucleiJS) GetArgSafe(args []goja.Value, index int, defaultValue any) any {
+	if index >= len(args) {
+		return defaultValue
+	}
+	val := args[index]
+	if goja.IsUndefined(val) {
+		return defaultValue
+	}
+	return val.Export()
+}
+
+// Require throws an error if expression is false
+func (j *NucleiJS) Require(expr bool, msg string) {
+	if !expr {
+		j.Throw(msg)
+	}
+}
+
+// LinkConstructor links a type with invocation doing this allows
+// usage of instance of type in js
+func LinkConstructor[T any](call goja.ConstructorCall, vm *goja.Runtime, obj T) *goja.Object {
+	instance := vm.ToValue(obj).(*goja.Object)
+	_ = instance.SetPrototype(call.This.Prototype())
+	return instance
+}
+
+// GetStructType gets a type defined in go and passed as argument from goja runtime if not found throws error
+// Donot use this unless you are accepting a struct type from constructor
+func GetStructType[T any](nj *NucleiJS, args []goja.Value, index int, FuncSig string) T {
+	if nj == nil {
+		nj = &NucleiJS{}
+	}
+	if index >= len(args) {
+		if FuncSig == "" {
+			nj.Throw("Missing argument at index %v", index)
+		}
+		nj.Throw("Missing arguments expected : %v", FuncSig)
+	}
+	value := args[index]
+	// validate type
+	var ptr T
+	expected := reflect.ValueOf(ptr).Type()
+	argType := expected.Name()
+	valueType := value.ExportType().Name()
+
+	if argType != valueType {
+		nj.Throw("Type Mismatch expected %v got %v", argType, valueType)
+	}
+
+	ptrValue := reflect.New(expected).Elem()
+	ptrValue.Set(reflect.ValueOf(value.Export()))
+
+	return ptrValue.Interface().(T)
+}
+
+// GetStructTypeSafe gets an type defined in go and passed as argument from goja runtime if not found returns default value
+// Donot use this unless you are accepting a struct type from constructor
+func GetStructTypeSafe[T any](nj *NucleiJS, args []goja.Value, index int, defaultValue T) T {
+	if nj == nil {
+		nj = &NucleiJS{}
+	}
+	if index >= len(args) {
+		return defaultValue
+	}
+	value := args[index]
+	// validate type
+	var ptr T
+	argType := reflect.ValueOf(ptr).Type().Name()
+	valueType := value.ExportType().Name()
+
+	if argType != valueType {
+		return defaultValue
+	}
+	return value.ToObject(nj.runtime()).Export().(T)
+}

pkg/protocols/common/protocolstate/headless.go

@@ -1,6 +1,7 @@
 package protocolstate
 
 import (
+	"net"
 	"strings"
 
 	"github.com/go-rod/rod"
@@ -81,6 +82,24 @@ func IsHostAllowed(targetUrl string) bool {
 	if NetworkPolicy == nil {
 		return true
 	}
+	sepCount := strings.Count(targetUrl, ":")
+	if sepCount > 1 {
+		// most likely a ipv6 address (parse url and validate host)
+		return NetworkPolicy.Validate(targetUrl)
+	}
+	if sepCount == 1 {
+		host, _, _ := net.SplitHostPort(targetUrl)
+		if _, ok := NetworkPolicy.ValidateHost(host); !ok {
+			return false
+		}
+		return true
+		// portInt, _ := strconv.Atoi(port)
+		// fixme:  broken port validation logic in networkpolicy
+		// if !NetworkPolicy.ValidatePort(portInt) {
+		// 	return false
+		// }
+	}
+	// just a hostname or ip without port
 	_, ok := NetworkPolicy.ValidateHost(targetUrl)
 	return ok
 }