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5文字で書くJavaScript/ Shibuya.XSS techtalk #10
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Masato Kinugawa
December 13, 2017
Technology
35
21k
5文字で書くJavaScript/ Shibuya.XSS techtalk #10
Shibuya.XSS techtalk #10 の発表資料です。
Masato Kinugawa
December 13, 2017
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Transcript
|>|>|>|>|>|>|>|>|>|>|>|>|>|>|>|>|>|> >|>|>|>|>|>|>|>|>|>|>|>|>|>|>|>|>|> |>|>|>|>|>|>|>|>|>|>|> |>|>|>|>|>|>|>|>|>|>|>
• • •
None
None
• • http://utf-8.jp/public/jjencode.html
• •
• • 0 1 2 3 4 5 6 7
8 9 a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
None
None
BANG!
|>
https://github.com/tc39/proposal-pipeline-operator The pipeline operator is essentially a useful syntactic sugar
on a function call with a single argument. |>
alert(1)
1 |> alert
• []()!+|> 8-2=6
• [] !+|> 6-1=5
• []+|> 5
• • •
None
• •
> Function("alert(1)") < ƒ anonymous() {alert(1)}
> Function("alert(1)")() OK
> [].constructor
> []["constructor"]
> []["constructor"] === Array < true > []["constructor"]["constructor"] === Function
< true
> []["constructor"]["constructor"]("alert(1)")() OK
> []["constructor"]["constructor"]("CODE")()
> []["constructor"]["constructor"]("CODE")()
> "CODE"|>[]["constructor"]["constructor"] > []["constructor"]["constructor"]("CODE")
> []|>"CODE"|>[]["constructor"]["constructor"] > []["constructor"]["constructor"]("CODE")()
exclaim(capitalize(doubleSay("hello"))); "hello" |> doubleSay |> capitalize |> exclaim;
> ("CODE"|>[]["constructor"]["constructor"])()
> ["CODE"|>[]["constructor"]["constructor"]][0]() ( Expression ) [ Expression ][0]
> []|>["CODE"|>[]["constructor"]["constructor"]][0]
> []|>["CODE"|>[]["constructor"]["constructor"]][0]
//JSFuckの基本型 []["constructor"]["constructor"]("CODE")() //5文字JSの基本型 []|>["CODE"|>[]["constructor"]["constructor"]][0]
None
> +[] < 0
> []>[] < false > [0]>[] < true
> [][[]] < undefined
> +[true][0] < 1 > +[true][0]+[true][0] < 2 > +[true][0]+[true][0]+[true][0]
< 3 > ...
> [true][0]+[] < "true" > [false][0]+[] < "false" > [undefined][0]+[]
< "undefined"
> ["true"][0][0] < "t" > ["true"][0][1] < "r" > ["true"][0][2]
< "u"
> []|>["CODE"|>[]["constructor"]["constructor"]][0]
> []["fill"]+[] < "function fill() { [native code] }"
None
[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[ [+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]] >[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]][+[]][+ [[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]> []][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+ [[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[][[]]+[]][+[]][+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]] +[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[+[]]>[]]+[]][+[]][+[]]+[[[+[]]>[]]+[]][+[]][+[[+[]]>[]][+[]]]+[[ [+[]]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[ ]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]] [+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[+[]
]>[]]+[]][+[]][+[]]+[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+ [[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]] ]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[ ]][+[]]]+[[[+[]]>[]]+[]][+[]][+[[+[]]>[]][+[]]]
> []|>["alert(1)"|>[]["constructor"]["constructor"]][0]
[]|>[[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[+[]]>[]]+[] ][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[+[]]>[]]+[]][+[]][+[[+[]]>[]][+[]]]+[[[+[]]>[]] +[]][+[]][+[]]+[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+ []][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[ [+[]]>[]][+[]]+[+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[+[[+[]]>[]][+[]]][+[]]+[[][[[[]>[]]+[]] [+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[] ]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[+[[+[]]>[]][+[] ]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]|>[][[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[] ]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[ ]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[][[[[]>[]]+[]][+
[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]> []][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[ +[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[][[]]+[]][+[]][+[[+[]]>[]][+[]]]+[[[]>[]]+ []][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[+[]]>[]]+[]][+[]][+[]]+[[[+[]]>[]]+[]][+[]][+ [[+[]]>[]][+[]]]+[[[+[]]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[] ]+[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[] ]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[ [+[]]>[]]+[]][+[]][+[]]+[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+ [[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[] ][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[ [+[]]>[]]+[]][+[]][+[[+[]]>[]][+[]]]][[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]][+[]][+[[+[]]>[] ][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]] >[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]] +[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]] +[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[ ]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[][[]]+[]][+[]][+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[ ]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[+[]]>[]]+[]][+[]][+[]]+[[[+[]]>[]]+[]][+[]][+[[+[]]>[]][+[]]]+[ [[+[]]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]] [+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]] >[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[+[]]>[]]+[]][+[]] [+[]]+[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][ +[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]] [+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[+[]]>[]]+[]][+[]] [+[[+[]]>[]][+[]]]]][+[]]
[]|>[[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[+[]]>[]]+[] ][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[+[]]>[]]+[]][+[]][+[[+[]]>[]][+[]]]+[[[+[]]>[]] +[]][+[]][+[]]+[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+ []][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[ [+[]]>[]][+[]]+[+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[+[[+[]]>[]][+[]]][+[]]+[[][[[[]>[]]+[]] [+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[] ]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[+[[+[]]>[]][+[] ]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]|>[][[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[] ]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[ ]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[][[[[]>[]]+[]][+
[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]> []][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[ +[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[][[]]+[]][+[]][+[[+[]]>[]][+[]]]+[[[]>[]]+ []][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[+[]]>[]]+[]][+[]][+[]]+[[[+[]]>[]]+[]][+[]][+ [[+[]]>[]][+[]]]+[[[+[]]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[] ]+[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[] ]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[ [+[]]>[]]+[]][+[]][+[]]+[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+ [[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[] ][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[ [+[]]>[]]+[]][+[]][+[[+[]]>[]][+[]]]][[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]][+[]][+[[+[]]>[] ][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]] >[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]] +[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]] +[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[ ]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[][[]]+[]][+[]][+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[ ]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[+[]]>[]]+[]][+[]][+[]]+[[[+[]]>[]]+[]][+[]][+[[+[]]>[]][+[]]]+[ [[+[]]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]] [+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]] >[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[+[]]>[]]+[]][+[]] [+[]]+[[][[[[]>[]]+[]][+[]][+[]]+[[[[]>[]]+[]][+[]]+[][[]]][+[]][+[[+[]]>[]][+[]]+[+[]]]+[[[]>[]]+[]][+[]][ +[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[]>[]]+[]][+[]][+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]]+[]][+[]][+[[+[]]>[]] [+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]+[[+[]]>[]][+[]]]+[[[+[]]>[]]+[]][+[]] [+[[+[]]>[]][+[]]]]][+[]] OK
unescape("%u0051")
https://syllab.fr/projets/experiments/xcharsjs/5chars.pipeline. html https://babeljs.io/repl/build/5099/#?babili=false&browsers=& build=&builtIns=false&code_lz=IwHwfAhgNgpgTgFyA&debug=f alse&circleciRepo=&evaluate=true&lineWrap=false&presets=st age-0&prettier=false&targets=&version=7.0.0- beta.2%2Bpr.6335
• •
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