Address
304 North Cardinal St.
Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
One of the challenges in ABCTF 2016 last week was some JavaScript deobfuscation to obtain a flag. As this is something I’ve never fully done before, I figured this would be a good start.
To start things off, the original code is below.
// original - http://pastebin.com/raw/9Y55hxbw
eval(new Buffer('process.stdin.resume();process.stdin.setEncoding('utf8');console.log("Give me a flag");process.stdin.on('data',(t)=>{t=t.trim();if(t.length===+[[+!+[]]+[!+[]+!+[]+!+[]+!+[]+!+[]+!+[]+!+[]+!+[]+!+[]]]){if(t.substr(+[],[!+[]+!+[]+!+[]+!+[]+!+[]]+[])===(+![]+[][([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(+![]+(![])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]][([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]]((!![]+[])[+!+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+([][[]]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+!+[]]+(+[![]]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+!+[]]]+(!![]+[])[!+[]+!+[]+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(![]+[])[+!+[]]+(+(!+[]+!+[]+[+!+[]]+[+!+[]]))[(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(+![]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(+![]+[![]]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[!+[]+!+[]+[+[]]]](!+[]+!+[]+!+[]+[+!+[]])[+!+[]]+(!![]+[])[!+[]+!+[]+!+[]])()(([]+[])[([![]]+[][[]])[+!+[]+[+[]]]+(!![]+[])[+[]]+(![]+[])[+!+[]]+(![]+[])[!+[]+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(![]+[])[!+[]+!+[]+!+[]]]()[+[]])[!+[]+!+[]]+(+[![]]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]][([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]]((!![]+[])[+!+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+([][[]]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+!+[]]+(+[![]]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+!+[]]]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]][([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]]((!![]+[])[+!+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+([][[]]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+!+[]]+(+[![]]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+!+[]]]+(!![]+[])[!+[]+!+[]+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(![]+[])[+!+[]]+(+(!+[]+!+[]+[+!+[]]+[+!+[]]))[(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(+![]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(+![]+[![]]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[!+[]+!+[]+[+[]]]](!+[]+!+[]+!+[]+[+!+[]])[+!+[]]+(!![]+[])[!+[]+!+[]+!+[]])()(([]+[])[(![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(!![]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]]()[+!+[]+[+!+[]]])[!+[]+!+[]]+(![]+[])[+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]])()())[!+[]+!+[]+!+[]+[+[]]]+(+![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]][([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]){if(t[[!+[]+!+[]+!+[]+!+[]+!+[]]+[]].charCodeAt(+[])===t[[+!+[]]+[!+[]+!+[]+!+[]+!+[]+!+[]+!+[]+!+[]+!+[]]].charCodeAt(+[])-!+[]-!+[]&&t[[!+[]+!+[]+!+[]+!+[]+!+[]]+[]].charCodeAt(+[])===+((+!![]+[])+(!+[]+!![]+[])+(!+[]+!![]+!![]+[]))){if(t.substr([!+[]+!+[]+!+[]+!+[]+!+[]+!+[]]+[],[!+[]+!+[]+!+[]+!+[]]+[])===Object.keys(process.versions)[+!+[]]){if(t[[+!+[]]+[+[]]]===t[[+!+[]]+[!+[]+!+[]+!+[]]]&&t[[+!+[]]+[+[]]].charCodeAt(+[])===+((!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+[])+(!+[]+!![]+!![]+!![]+!![]+[]))){if(t.substr([+!+[]]+[+!+[]],!+[]+!+[])===((typeof x)[[!+[]+!+[]+!+[]+!+[]+!+[]]+[]]+(typeof t)[+[]])){if(t.substr([+!+[]]+[!+[]+!+[]+!+[]+!+[]],[!+[]+!+[]+!+[]+!+[]]+[])===(+(!+[]+!+[]+!+[]+[!+[]+!+[]]))[(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(+![]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(+![]+[![]]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[!+[]+!+[]+[+[]]]](!+[]+!+[]+!+[]+[!+[]+!+[]+!+[]])+[!+[]+!+[]+!+[]+!+[]]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]][([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]]((!![]+[])[+!+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+([][[]]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+!+[]]+(+[![]]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+!+[]]]+(!![]+[])[!+[]+!+[]+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(![]+[])[+!+[]]+(+(!+[]+!+[]+[+!+[]]+[+!+[]]))[(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(+![]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(+![]+[![]]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[!+[]+!+[]+[+[]]]](!+[]+!+[]+!+[]+[+!+[]])[+!+[]]+(!![]+[])[!+[]+!+[]+!+[]])()(([]+[])[([![]]+[][[]])[+!+[]+[+[]]]+(!![]+[])[+[]]+(![]+[])[+!+[]]+(![]+[])[!+[]+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(![]+[])[!+[]+!+[]+!+[]]]()[+[]])[!+[]+!+[]]+(+(!+[]+!+[]+[+[]]))[(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(+![]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(+![]+[![]]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[!+[]+!+[]+[+[]]]](!+[]+!+[]+[+!+[]])){console.log("nice job!");process.exit();}}}}}}}console.log("nope!");process.exit();});
','base64').toString());
The first thing I did was to base64 decode it obviously.
process.stdin.resume();process.stdin.setEncoding('utf8');console.log("Give me a flag");process.stdin.on('data',(t)=>{t=t.trim();if(
< ...snip ...>
){console.log("nice job!");process.exit();}}}}}}}console.log("nope!");process.exit();});
Running this through the JavaScript beautifier at least gave me some white-space to work with, but that was about it.
process.stdin.resume();
process.stdin.setEncoding('utf8');
console.log("Give me a flag");
process.stdin.on('data', (t) => {
t = t.trim();
if (t.length === +[
[+!+[]] + [!+[] + !+[] + !+[] + !+[] + !+[] + !+[] + !+[] + !+[] + !+[]]
]) {
if (t.substr(+[], [!+[] + !+[] + !+[] + !+[] + !+[]] + []) === (+![] + [][([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (+![] + (![])[([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]][([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]]((!![] + [])[+!+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + ([][
[]
] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+!+[]] + (+[![]] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+!+[]]] + (!![] + [])[!+[] + !+[] + !+[]] + (![] + [])[!+[] + !+[] + !+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (![] + [])[+!+[]] + (+(!+[] + !+[] + [+!+[]] + [+!+[]]))[(!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (+![] + ([] + [])[([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (+![] + [![]] + ([] + [])[([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]])[!+[] + !+[] + [+[]]]](!+[] + !+[] + !+[] + [+!+[]])[+!+[]] + (!![] + [])[!+[] + !+[] + !+[]])()(([] + [])[([![]] + [][
[]
])[+!+[] + [+[]]] + (!![] + [])[+[]] + (![] + [])[+!+[]] + (![] + [])[!+[] + !+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (![] + [])[!+[] + !+[] + !+[]]]()[+[]])[!+[] + !+[]] + (+[![]] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]][([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]]((!![] + [])[+!+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + ([][
[]
] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+!+[]] + (+[![]] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+!+[]]] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]][([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]]((!![] + [])[+!+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + ([][
[]
] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+!+[]] + (+[![]] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+!+[]]] + (!![] + [])[!+[] + !+[] + !+[]] + (![] + [])[!+[] + !+[] + !+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (![] + [])[+!+[]] + (+(!+[] + !+[] + [+!+[]] + [+!+[]]))[(!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (+![] + ([] + [])[([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (+![] + [![]] + ([] + [])[([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]])[!+[] + !+[] + [+[]]]](!+[] + !+[] + !+[] + [+!+[]])[+!+[]] + (!![] + [])[!+[] + !+[] + !+[]])()(([] + [])[(![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (!![] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]]()[+!+[] + [+!+[]]])[!+[] + !+[]] + (![] + [])[+!+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]])()())[!+[] + !+[] + !+[] + [+[]]] + (+![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]][([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]]) {
if (t[[!+[] + !+[] + !+[] + !+[] + !+[]] + []].charCodeAt(+[]) === t[[+!+[]] + [!+[] + !+[] + !+[] + !+[] + !+[] + !+[] + !+[] + !+[]]].charCodeAt(+[]) - !+[] - !+[] && t[[!+[] + !+[] + !+[] + !+[] + !+[]] + []].charCodeAt(+[]) === +((+!![] + []) + (!+[] + !![] + []) + (!+[] + !![] + !![] + []))) {
if (t.substr([!+[] + !+[] + !+[] + !+[] + !+[] + !+[]] + [], [!+[] + !+[] + !+[] + !+[]] + []) === Object.keys(process.versions)[+!+[]]) {
if (t[[+!+[]] + [+[]]] === t[[+!+[]] + [!+[] + !+[] + !+[]]] && t[[+!+[]] + [+[]]].charCodeAt(+[]) === +((!+[] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + []) + (!+[] + !![] + !![] + !![] + !![] + []))) {
if (t.substr([+!+[]] + [+!+[]], !+[] + !+[]) === ((typeof x)[[!+[] + !+[] + !+[] + !+[] + !+[]] + []] + (typeof t)[+[]])) {
if (t.substr([+!+[]] + [!+[] + !+[] + !+[] + !+[]], [!+[] + !+[] + !+[] + !+[]] + []) === (+(!+[] + !+[] + !+[] + [!+[] + !+[]]))[(!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (+![] + ([] + [])[([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (+![] + [![]] + ([] + [])[([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]])[!+[] + !+[] + [+[]]]](!+[] + !+[] + !+[] + [!+[] + !+[] + !+[]]) + [!+[] + !+[] + !+[] + !+[]] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]][([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]]((!![] + [])[+!+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + ([][
[]
] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+!+[]] + (+[![]] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+!+[]]] + (!![] + [])[!+[] + !+[] + !+[]] + (![] + [])[!+[] + !+[] + !+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (![] + [])[+!+[]] + (+(!+[] + !+[] + [+!+[]] + [+!+[]]))[(!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (+![] + ([] + [])[([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (+![] + [![]] + ([] + [])[([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]])[!+[] + !+[] + [+[]]]](!+[] + !+[] + !+[] + [+!+[]])[+!+[]] + (!![] + [])[!+[] + !+[] + !+[]])()(([] + [])[([![]] + [][
[]
])[+!+[] + [+[]]] + (!![] + [])[+[]] + (![] + [])[+!+[]] + (![] + [])[!+[] + !+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (![] + [])[!+[] + !+[] + !+[]]]()[+[]])[!+[] + !+[]] + (+(!+[] + !+[] + [+[]]))[(!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (+![] + ([] + [])[([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (+![] + [![]] + ([] + [])[([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + ([][
[]
] + [])[+!+[]] + (![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[+!+[]] + ([][
[]
] + [])[+[]] + ([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]])[!+[] + !+[] + [+[]]]](!+[] + !+[] + [+!+[]])) {
console.log("nice job!");
process.exit();
}
}
}
}
}
}
}
console.log("nope!");
process.exit();
});
At this point, I remembered the recent post on PortSwigger, so I knew I would have to get my hands dirty.
In cases like this, the easiest way is to use the language (and available tools) against itself. For this specific example, I opened up my browser console and started cleaning up some of the non alphanumeric code. I prefer to break the code up into chunks (sections between parenthesis, curly braces, specific methods, etc.) and decode it piece by piece. This prevents the interpreter from missing something or me copying and pasting too much somewhere.
>> console.log(+[
[+!+[]] + [!+[] + !+[] + !+[] + !+[] + !+[] + !+[] + !+[] + !+[] + !+[]]
])
19
>> console.log(+[], [!+[] + !+[] + !+[] + !+[] + !+[]] + [])
0 5
// everything after the === and before the {
>> console.log((+![] + [][([][(![] + [])[+[]] + ([![]] + [][
[]
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]] + [])[!+[] + !+[] + !+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
< ... snip ... >
ABCTF
With those 3 changes alone, the top 7 lines of my file were now readable and useful.
process.stdin.resume();
process.stdin.setEncoding('utf8');
console.log("Give me a flag");
process.stdin.on('data', (t) => {
t = t.trim();
if (t.length === 19) {
if (t.substr(0,5) === "ABCTF") {
At this point I already knew that my flag was 19 characters long and started with ABCTF (which was expected).
Next up was line 8.
>> console.log([!+[] + !+[] + !+[] + !+[] + !+[]] + []) 5 >> console.log(+[]) 0 >> console.log([+!+[]] + [!+[] + !+[] + !+[] + !+[] + !+[] + !+[] + !+[] + !+[]]) 18 >> console.log(- !+[] - !+[]) -2 >> console.log(+((+!![] + []) + (!+[] + !![] + []) + (!+[] + !![] + !![] + []))) 123
if (t[5].charCodeAt(0) === t[18].charCodeAt(0) - 2 && t[5].charCodeAt(0) === 123) {
Line 9 was much simpler, as there were only two non-alphanumeric strings to deal with for now.
>> console.log([!+[] + !+[] + !+[] + !+[] + !+[] + !+[]] + [], [!+[] + !+[] + !+[] + !+[]] + []) 6 4 >> console.log(+!+[]) 1
That gave me the following line (I’d have to come back to the rest of it later).
if (t.substr(6,4) === Object.keys(process.versions)[1]) {
Line 10 was similar to the ones earlier, and I decoded it the same way.
>> console.log([+!+[]] + [+[]]) 10 >> console.log([+!+[]] + [!+[] + !+[] + !+[]]) 13 >> console.log(+((!+[] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + !![] + []) + (!+[] + !![] + !![] + !![] + !![] + []))) 95
At this point I understood how I was decoding the lines, so I figured I would just finish off the rest of the script and get it in a more readable form.
>> console.log([+!+[]] + [+!+[]], !+[] + !+[])
11 2
>> console.log([!+[] + !+[] + !+[] + !+[] + !+[]] + [])
5
>> console.log(+[])
0
>> console.log([+!+[]] + [!+[] + !+[] + !+[] + !+[]], [!+[] + !+[] + !+[] + !+[]] + [])
14 4
>> console.log(+(!+[] + !+[] + !+[] + [!+[] + !+[]]))
32
>> console.log((+(!+[] + !+[] + !+[] + [!+[] + !+[]]))[(!![] + [])[+[]] + (!![] + [][(![] + [])[+[]] + ([![]] + [][
< ... EVERYTHING ELSE UNTIL THE LAST { ... >
])[+!+[] + [+[]]] + (![] + [])[!+[] + !+[]] + (!![] + [])[+[]] + (!![] + [])[!+[] + !+[] + !+[]] + (!![] + [])[+!+[]]])[+!+[] + [+[]]] + (!![] + [])[+!+[]]])[!+[] + !+[] + [+[]]]](!+[] + !+[] + [+!+[]]))
w4Ck
Now I finally had a mostly useful script, that I would be able to work with.
process.stdin.resume();
process.stdin.setEncoding('utf8');
console.log("Give me a flag");
process.stdin.on('data', (t) => {
t = t.trim();
if (t.length === 19) {
if (t.substr(0,5) === "ABCTF") {
if (t[5].charCodeAt(0) === t[18].charCodeAt(0) && t[5].charCodeAt(0) === 123) {
if (t.substr(6,4) === Object.keys(process.versions)[1]) {
if (t[10] === t[13] && t[10].charCodeAt(0) === 95) {
if (t.substr(11,2) === ((typeof x)[5] + (typeof t)[0])) {
if (t.substr(14,4) === "w4Ck") {
console.log("nice job!");
process.exit();
}
}
}
}
}
}
}
console.log("nope!");
process.exit();
});
Based on lines 6 and 7, I knew that the 19 character flag started with “ABCTF”. Based on line 8 I knew that the 6th and 18th characters were character code 123 and 125 respectively (console.log(String.fromCharCode(123)) = ‘{‘; 125 = ‘}’).
With line 12 I knew that the 14th through 18th characters were “w4CK”, giving me a fair chunk of the flag already.
ABCTF{????????w4Ck}
Next up was line 9. The process.versions command didn’t work in my console originally, until I realized it was for Node.js.
root@kali:~# node > process.versions { http_parser: '2.6.2', node: '5.10.1', v8: '4.6.85.31', uv: '1.8.0', zlib: '1.2.8', ares: '1.10.1-DEV', icu: '56.1', modules: '47', openssl: '1.0.2g' } > console.log(Object.keys(process.versions)[1]) node
With that string, I knew that the 6th through 10th characters of the flag would be “node”.
Line 10 provided the location of the underscores (String.fromCharCode(95) = “_”), so I was down to 2 unknown characters in my flag.
ABCTF{node_??_w4Ck}
At this point, I could have probably guessed the last two characters, but I wanted to do it the right way.
The last line was actually kind of interesting, and I liked the way they used it to finish up my flag.
if (t.substr(11,2) === ((typeof x)[5] + (typeof t)[0])) {
For this line, my last two characters were actually individual characters taken from the type of two variables.
I knew that t was a “string” since it was the flag, so the second character was ‘s’.
There wasn’t actually an x variable in this entire script, so its type was actually “undefined”. The 6th character of undefined is ‘i’, giving me ‘is’ for the middle of my flag.
When it was all said and done, the following (and correct) flag was what I got.
ABCTF{node_is_w4Ck}
Ray Doyle is an avid pentester/security enthusiast/beer connoisseur who has worked in IT for almost 16 years now. From building machines and the software on them, to breaking into them and tearing it all down; he’s done it all. To show for it, he has obtained an OSCE, OSCP, eCPPT, GXPN, eWPT, eWPTX, SLAE, eMAPT, Security+, ICAgile CP, ITIL v3 Foundation, and even a sabermetrics certification!
He currently serves as a Senior Staff Adversarial Engineer for Avalara, and his previous position was a Principal Penetration Testing Consultant for Secureworks.
This page contains links to products that I may receive compensation from at no additional cost to you. View my Affiliate Disclosure page here. As an Amazon Associate, I earn from qualifying purchases.
