Examples

Tubes and Spawners

Here are a few examples of how to use tubes and spawners together to provide easy interface with applications

hakkit.spawn.cmd

s = new hakkit.spawn.cmd("cat", [], "stdout")
var tb = new hakkit.tube(s)

count = 0
tb.on("input", function() {
	if (count < 5) {
		tb.count++
		return `Hello World ${tb.count}` 
	} else if (count == 5) {
		setTimeout(function() {
			tb.sendline("Done!")
			tb.close()
		}, 1000)
		count ++
	}
})

console.log(`1. ${tb.recvline().toString()}`)
console.log(`2. ${tb.recvuntil(/[3-6]\n/).toString()}`)
tb.sendline("Hiya!")
console.log(`3. ${tb.recv().toString()}`)
console.log(`4. ${tb.recv().toString()}`)
console.log(`5. ${tb.recv().toString()}`)

will output the following

1. Hello World 1

2. Hello World 2
Hello World 3

3. Hello World 4
Hello World 5

4. Hiya!

5. Done!

Another example, using tb.interactive

s = new hakkit.spawn.cmd("/bin/bash", [], "stdout", {BOO: "FOO"})
var tb = new hakkit.tube(s)
tb.interactive()

Which will open a prompt that allows you to run

echo $BOO
FOO

hakkit.spawn.net

s = new hakkit.spawn.net("dttw.tech", 80) 

var tb = new hakkit.tube(s)

tb.sendline("GET / HTTP/1.1")
tb.sendline("Host: dttw.tech")
tb.sendline()

tb.recvuntil(/Set-Cookie:/)
console.log(tb.recvline().toString())

tb.close()

will fetch the cookie header from an http request, printing out

__cfduid=d52a14e65a3e064092b72565297ee1bbc1460755116; expires=Sat, 15-Apr-17 21:18:36 GMT; path=/; domain=.dttw.tech; HttpOnly

hakkit.spawn.ssh.cmd

s = new hakkit.spawn.ssh.cmd( {host: "test.webserver.com", user: "zwade" }, "cat", ["~/flag.txt"])
var tb = new hakkit.tube(s)
console.log(tb.recvline().toString())

will first prompt for a password and then print out the read file

Password for zwade@test.webserver.com -
**********
flage{mush_flage_good_job}

hakkit.spawn.ssh.shell

s = new hakkit.spawn.ssh.shell({user: "zacharywade", privateKey: "/Users/zacharywade/.ssh/id_rsa"})
var tb = new hakkit.tube(s)
tb.interactive()

will open a shell on the local machine allowing you to interact with it as

>>> whoami
zacharywade

hakkit.file

s = new hakkit.file("message.txt", "ra", "ascii")
console.log("Signature: "+s.read(16+1)) 
console.log("Message: "+s.read())
s.write("Ok, it will be seen to shortly.")

>>> cat > message.txt
0123456789ABCDEF
Please pick up more baking soda.

will read the full contents of the file, and then append a reply to it. Thus running it will produce

Signature: 01234567890ABCDEF

Message: Please pick up more baking soda

and

>>> cat message.txt
0123456789ABCDEF
Please pick up more baking soda
Ok, it will be seen to shortly

Alternatively, files may be used in conjunction with a tube, as such

s = new hakkit.file("/usr/share/dict/web2")
var tb = new hakkit.tube(s)
console.log(tb.recvuntil(/aardvark\n/).toString())

will print out

A
a
aa
aal
aalii
aam
Aani
aardvark