195 lines
4.9 KiB
Go
195 lines
4.9 KiB
Go
package main
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import (
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"context"
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"fmt"
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"os"
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"sync"
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"time"
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"github.com/CaliDog/certstream-go"
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"github.com/jmoiron/jsonq"
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"github.com/ns3777k/go-shodan/v4/shodan"
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"github.com/segmentio/kafka-go"
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"github.com/sirupsen/logrus"
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"github.com/spf13/viper"
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"gitlab.dcso.lolcat/LABS/styx/broker"
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"gitlab.dcso.lolcat/LABS/styx/filters"
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"gitlab.dcso.lolcat/LABS/styx/models"
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)
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func init() {
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// Setting up logging.
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logrus.SetFormatter(&logrus.TextFormatter{
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FullTimestamp: true,
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})
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logrus.SetReportCaller(true)
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viper.SetConfigName("config")
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viper.SetConfigType("yaml")
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viper.AddConfigPath(".")
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}
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func main() {
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err := viper.ReadInConfig()
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if err != nil {
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panic(err)
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}
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os.Setenv("SHODAN_KEY", viper.GetString("shodan.key"))
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fmt.Println("Starting to get data from the Internet...")
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// The false flag specifies that we want heartbeat messages.
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conn, err := broker.SetUpKafkaConnecter()
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if err != nil {
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panic(err)
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}
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// stop channel
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stopChan := make(chan os.Signal)
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var wg sync.WaitGroup
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wg.Add(3)
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go broker.ReadEventFromKafka()
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// certstream
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stream, errStream := certstream.CertStreamEventStream(false)
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if viper.GetBool("certstream.activated") {
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go certstreamRoutine(stream, errStream, conn, stopChan, &wg)
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}
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// pastebin
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if viper.GetBool("pastebin.activated") {
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go pastebinRoutine(stopChan, &wg)
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}
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// shodan
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client := shodan.NewEnvClient(nil)
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ch := make(chan *shodan.HostData)
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err = client.GetBannersByPorts(context.Background(), viper.GetIntSlice("shodan.ports"), ch)
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if err != nil {
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logrus.Panic(err)
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}
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if viper.GetBool("shodan.activated") {
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go shodanRoutine(client, ch, conn, stopChan, &wg)
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}
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wg.Wait()
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}
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// routines
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// CertstreamRoutine wraps the routine for grabbing Certstream data.
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func certstreamRoutine(stream chan jsonq.JsonQuery, errStream chan error, conn *kafka.Conn, stopChan chan os.Signal, wg *sync.WaitGroup) {
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fmt.Println("certstream is activated")
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for {
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select {
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case jq := <-stream:
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if data, err := models.ExtractCertFromStream(jq); err == nil {
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rawNode := models.WrapCertStreamData(*data)
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models.SaveCertStreamRaw("raw_certstream.json", rawNode)
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certNode := models.BuildCertNode(rawNode)
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models.SaveCertNode("cert_nodes.json", certNode)
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mainNode := models.BuildNode("node", "certstream", certNode.ID)
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models.SaveNode("nodes.json", mainNode)
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edge := models.BuildEdge("certstream", rawNode.ID, mainNode.ID)
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models.SaveEdge(edge)
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edge = models.BuildEdge("certstream", mainNode.ID, certNode.ID)
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models.SaveEdge(edge)
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allDomains := data.Data.LeafCert.AllDomains
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saveSingleValues(conn, "certstream", "domain", certNode.ID, allDomains)
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}
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case err := <-errStream:
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logrus.Error(err)
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case <-stopChan:
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wg.Done()
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return
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}
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}
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}
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func pastebinRoutine(stopChan chan os.Signal, wg *sync.WaitGroup) {
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fmt.Println("pastebin is activated")
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for {
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select {
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default:
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pastes, err := models.QueryPastes()
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if err != nil {
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logrus.Panic(err)
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}
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for _, p := range pastes {
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paste, err := models.FetchPaste(p)
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if err != nil {
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logrus.Error("cannot fetch paste", err)
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}
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fp := models.FullPaste{
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Meta: p,
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Full: paste,
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}
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res := models.BuildPasteNode(&fp)
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models.SavePaste("paste_formatted.json", res)
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time.Sleep(1 * time.Second)
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}
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time.Sleep(3 * time.Second)
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case <-stopChan:
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wg.Done()
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return
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}
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}
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}
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func shodanRoutine(client *shodan.Client, shodanChan chan *shodan.HostData, conn *kafka.Conn, stopChan chan os.Signal, wg *sync.WaitGroup) {
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fmt.Println("shodan is activated")
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for {
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select {
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default:
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banner, ok := <-shodanChan
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if !ok {
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logrus.Error("channel is closed")
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break
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}
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shodanNode := models.BuildShodanNode(banner)
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// first filter poc
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if !filters.IsAkamai(shodanNode.Data.IP) {
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fmt.Println("is not Akamai", shodanNode.Data.IP)
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hostnames := shodanNode.Data.Hostnames
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if len(hostnames) != 0 {
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saveSingleValues(conn, "shodan_stream", "hostname", shodanNode.ID, hostnames)
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}
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domains := shodanNode.Data.Domains
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if len(domains) != 0 {
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saveSingleValues(conn, "shodan_stream", "domain", shodanNode.ID, domains)
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}
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models.SaveShodanNode("raw_shodan.json", shodanNode)
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node := models.BuildNode("shodan", "shodan_stream", shodanNode.ID)
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models.SaveNode("nodes.json", node)
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edge := models.BuildEdge("shodan", shodanNode.ID, node.ID)
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models.SaveEdge(edge)
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} else {
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fmt.Println("is akamai", shodanNode.Data.IP)
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}
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case <-stopChan:
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wg.Done()
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return
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}
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}
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}
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// helpers
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func saveSingleValues(brokerConn *kafka.Conn, source string, datatype string, originNodeID string, values []string) {
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for _, value := range values {
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domainNode := models.BuildNode(source, datatype, value)
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models.SaveNode("nodes.json", domainNode)
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if domainNode.Type == "domain" || domainNode.Type == "hostname" {
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broker.SendEventToKafka(brokerConn, *domainNode)
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}
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edge := models.BuildEdge(source, originNodeID, domainNode.ID)
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models.SaveEdge(edge)
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}
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}
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