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42 lines
805 B
Go
42 lines
805 B
Go
package syn_scan
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import (
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"fmt"
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"time"
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"github.com/evilsocket/islazy/async"
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)
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const bannerGrabTimeout = time.Duration(5) * time.Second
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type bannerGrabberFn func(mod *SynScanner, ip string, port int) string
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type grabberJob struct {
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IP string
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Port *OpenPort
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}
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func (mod *SynScanner) bannerGrabber(arg async.Job) {
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job := arg.(grabberJob)
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if job.Port.Proto != "tcp" {
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return
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}
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ip := job.IP
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port := job.Port.Port
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sport := fmt.Sprintf("%d", port)
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fn := tcpGrabber
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if port == 80 || port == 443 || sport[0] == '8' {
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fn = httpGrabber
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} else if port == 53 || port == 5353 {
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fn = dnsGrabber
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}
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mod.Debug("grabbing banner for %s:%d", ip, port)
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job.Port.Banner = fn(mod, ip, port)
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if job.Port.Banner != "" {
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mod.Info("found banner for %s:%d -> %s", ip, port, job.Port.Banner)
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}
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}
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