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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| package enum | ||
|
|
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| import ( | ||
| "GoMapEnum/src/logger" | ||
| "GoMapEnum/src/modules/smtp" | ||
| "GoMapEnum/src/orchestrator" | ||
|
|
||
| "github.com/spf13/cobra" | ||
| ) | ||
|
|
||
| var smtpOptions smtp.Options | ||
|
|
||
| // smtpCmd represents the smtp command | ||
| var smtpCmd = &cobra.Command{ | ||
| Use: "smtp", | ||
| Short: "Enumerate email address by connection to the smtp port of the target.", | ||
| Long: ` | ||
| Credits: https://github.com/cytopia/smtp-user-enum`, | ||
| Example: `go run main.go userenum smtp -u users -t mail.contoso.com -o validUsers`, | ||
| Run: func(cmdCli *cobra.Command, args []string) { | ||
| log := logger.New("Enumeration", "SMTP", smtpOptions.Target) | ||
| log.SetLevel(level) | ||
| log.Info("Starting the module SMTP") | ||
| smtpOptions.Log = log | ||
| smtpOptions.Proxy = proxy | ||
|
|
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| orchestratorOptions := orchestrator.Orchestrator{} | ||
| orchestratorOptions.PreActionUserEnum = smtp.PrepareSMTPConnections | ||
| orchestratorOptions.UserEnumFunc = smtp.UserEnum | ||
| orchestratorOptions.PostActionUserEnum = smtp.CloseSMTPConnections | ||
| validUsers = orchestratorOptions.UserEnum(&smtpOptions) | ||
|
|
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| }, | ||
| } | ||
|
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| func init() { | ||
|
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| smtpCmd.Flags().StringVarP(&smtpOptions.Domain, "domain", "d", "", "Targeted domain ") | ||
| smtpCmd.Flags().StringVarP(&smtpOptions.Mode, "mode", "m", "", "RCPT, VRFY, EXPN (default: RCPT)") | ||
| smtpCmd.Flags().StringVarP(&smtpOptions.Users, "user", "u", "", "Username or file containing the usernames") | ||
| smtpCmd.Flags().StringVarP(&smtpOptions.Target, "target", "t", "", "Host pointing to the OWA service") | ||
| smtpCmd.Flags().IntVar(&smtpOptions.Thread, "thread", 2, "Number of threads") | ||
| smtpCmd.MarkFlagRequired("user") | ||
| smtpCmd.MarkFlagRequired("target") | ||
| smtpCmd.MarkFlagRequired("domain") | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| package smtp | ||
|
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| import ( | ||
| "GoMapEnum/src/utils" | ||
|
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| smtp "github.com/nodauf/net-smtp" | ||
| ) | ||
|
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| // Options for o365 module | ||
| type Options struct { | ||
| Target string | ||
| Domain string | ||
| Mode string | ||
| utils.BaseOptions | ||
|
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| connectionsPool chan *smtp.Client | ||
| } | ||
|
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| func (options *Options) GetBaseOptions() *utils.BaseOptions { | ||
| return &options.BaseOptions | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| package smtp | ||
|
|
||
| import ( | ||
| "GoMapEnum/src/utils" | ||
| "fmt" | ||
| "strconv" | ||
| "strings" | ||
| "time" | ||
|
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| smtp "github.com/nodauf/net-smtp" | ||
| ) | ||
|
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| func PrepareSMTPConnections(optionsInterface *interface{}) { | ||
| options := (*optionsInterface).(*Options) | ||
| options.connectionsPool = make(chan *smtp.Client, options.Thread) | ||
| var nbConnectionsRequired int | ||
| nbConnectionsRequired = options.Thread | ||
| if len(options.UsernameList) < options.Thread { | ||
| nbConnectionsRequired = len(options.UsernameList) | ||
| } | ||
| options.Log.Debug("Preparing a pool of " + strconv.Itoa(nbConnectionsRequired) + " connections") | ||
| for i := 1; i <= nbConnectionsRequired; i++ { | ||
| client, err := smtp.Dial(options.Target + ":25") | ||
| if err != nil { | ||
| options.Log.Error("Failed to establish a connection " + err.Error()) | ||
| continue | ||
| } | ||
| err = client.Hello(utils.RandomString(6)) | ||
| if err != nil { | ||
| fmt.Println("hello" + err.Error()) | ||
| } | ||
| err = client.Mail(utils.RandomString(6) + "@" + options.Domain) | ||
| if err != nil { | ||
| fmt.Println("mail" + err.Error()) | ||
| } | ||
| options.connectionsPool <- client | ||
| } | ||
| } | ||
|
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| func UserEnum(optionsInterface *interface{}, username string) bool { | ||
| options := (*optionsInterface).(*Options) | ||
| valid := false | ||
| smtpConnection := <-options.connectionsPool | ||
| switch strings.ToLower(options.Mode) { | ||
| case "rcpt", "": | ||
| err := smtpConnection.Rcpt(username) | ||
| if err == nil { | ||
| options.Log.Success(username) | ||
| valid = true | ||
| } else { | ||
| options.Log.Debug(username + " => " + err.Error()) | ||
| options.Log.Fail(username) | ||
| } | ||
| case "vrfy": | ||
| err := smtpConnection.Verify(username) | ||
| if err == nil { | ||
| options.Log.Success(username) | ||
| valid = true | ||
| } else { | ||
| options.Log.Debug(username + " => " + err.Error()) | ||
| options.Log.Fail(username) | ||
| } | ||
| case "expn": | ||
| err := smtpConnection.Expand(username) | ||
| if err == nil { | ||
| options.Log.Success(username) | ||
| valid = true | ||
| } else { | ||
| code := strings.Split(err.Error(), " ")[0] | ||
| options.Log.Debug(username + " => " + err.Error()) | ||
| options.Log.Fail(username) | ||
| // If the command is not implemented no need to pursue | ||
| if code == "502" { | ||
| CloseSMTPConnections(optionsInterface) | ||
| options.Log.Fatal("The command is not implemented. No need to pursue using this method.") | ||
| } | ||
| fmt.Println(code) | ||
| } | ||
| default: | ||
| CloseSMTPConnections(optionsInterface) | ||
| options.Log.Fatal("Unrecognised mode: " + options.Mode + ". Only RCPT, VRFY and EXPN are supported.") | ||
| } | ||
|
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| options.connectionsPool <- smtpConnection | ||
| return valid | ||
| } | ||
|
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| func CloseSMTPConnections(optionsInterface *interface{}) { | ||
| options := (*optionsInterface).(*Options) | ||
| options.Log.Debug("Closing the pool of connections") | ||
| for i := 1; i <= options.Thread; i++ { | ||
| select { | ||
| case smtpConnection := <-options.connectionsPool: | ||
| smtpConnection.Close() | ||
| case <-time.After(1 * time.Second): | ||
| options.Log.Debug("Something went wrong0 A connection seems already closed") | ||
| } | ||
|
|
||
| } | ||
| close(options.connectionsPool) | ||
| } |