From 6ab1613157a6a5d3eabf9d2fe2adf4699d29a5ba Mon Sep 17 00:00:00 2001
From: Marin Ivanov <dev@metala.org>
Date: Sun, 24 Mar 2019 21:45:18 +0200
Subject: Make TCP connection tarpit

This first version of the command has support for SSH protocol tarpit.
---
 ssh.go | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 ssh.go

(limited to 'ssh.go')

diff --git a/ssh.go b/ssh.go
new file mode 100644
index 0000000..3d43a6c
--- /dev/null
+++ b/ssh.go
@@ -0,0 +1,33 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"io/ioutil"
+	"math/rand"
+	"net"
+	"time"
+)
+
+type empty struct{}
+
+func sshHandler(conn net.Conn) {
+	eof := make(chan empty)
+	go func() {
+		io.Copy(ioutil.Discard, conn)
+		eof <- empty{}
+	}()
+
+	tick := time.Tick(10 * time.Second)
+	for {
+		select {
+		case <-eof:
+			return
+		case <-tick:
+			_, err := fmt.Fprintf(conn, "%x\r\n", rand.Uint32())
+			if err != nil {
+				return
+			}
+		}
+	}
+}
-- 
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