研究 XSS 过滤只是很好奇这种 js 是怎么样编码的? - V2EX
V2EX = way to explore
V2EX 是一个关于分享和探索的地方
现在注册
已注册用户请  登录
推荐关注
Meteor
JSLint - a Javascript code quality tool
jsFiddle
D3.js
WebStorm
推荐书目
Javascript 权威指南第 5 版
Closure: The Definitive Guide
lshero
V2EX    Javascript

研究 XSS 过滤只是很好奇这种 js 是怎么样编码的?

  •  
  •   lshero 2014-09-28 16:23:57 +08:00 4909 次点击
    这是一个创建于 4031 天前的主题,其中的信息可能已经有所发展或是发生改变。
    xss一些人用unicode字符来替换关键字已经很常见了但是对于这种代码是怎么执行的比较好奇


    <script>[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]][([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]]((![]+[])[+!+[]]+(![]+[])[!+[]+!+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]+(!![]+[])[+[]]+(![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[!+[]+!+[]+[+[]]]+[!+[]+!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[!+[]+!+[]+[+[]]])()</script>
    10 条回复    2014-09-30 06:45:00 +08:00
    cxe2v
        1
    cxe2v  
       2014-09-28 16:26:20 +08:00
    应该是有个map可以映射unicode和关键字
    lshero
        2
    lshero  
    OP
       2014-09-28 16:33:41 +08:00
    @cxe2v 搜索了一下貌似是这种映射
    http://www.cnblogs.com/pandora/archive/2010/02/27/1674833.html
    突然觉得要把 0-9 a-z凑齐的话那也应该算是蛮拼的了吧。
    woodthom
        3
    woodthom  
       2014-09-28 16:34:56 +08:00   1
    lshero
        4
    lshero  
    OP
       2014-09-28 16:35:19 +08:00
    @woodthom 好东西收藏之
    emric
        5
    emric  
       2014-09-28 17:04:21 +08:00
    之前研究过, 这类代码仅在 JS 文件或 Script 标签能运行, 转义好字符就没有太大问题了.
    Mutoo
        6
    Mutoo  
       2014-09-28 17:50:20 +08:00   1
    ichou
        7
    ichou  
       2014-09-28 18:52:32 +08:00
    @woodthom 这个已经坏了 =。=-
    zzNucker
        8
    zzNucker  
       2014-09-28 19:18:12 +08:00
    这不是jsfuck么
    willwen
        9
    willwen  
       2014-09-28 22:31:33 +08:00 via iPhone
    jsfuck,Google
    cha1
        10
    cha1  
       2014-09-30 06:45:00 +08:00   1
    关于     帮助文档     自助推广系统     博客     API &nsp;   FAQ     Solana     2676 人在线   最高记录 6679       Select Language
    创意工作者们的社区
    World is powered by solitude
    VERSION: 3.9.8.5 27ms UTC 02:18 PVG 10:18 LAX 19:18 JFK 22:18
    Do have faith in what you're doing.
    ubao snddm index pchome yahoo rakuten mypaper meadowduck bidyahoo youbao zxmzxm asda bnvcg cvbfg dfscv mmhjk xxddc yybgb zznbn ccubao uaitu acv GXCV ET GDG YH FG BCVB FJFH CBRE CBC GDG ET54 WRWR RWER WREW WRWER RWER SDG EW SF DSFSF fbbs ubao fhd dfg ewr dg df ewwr ewwr et ruyut utut dfg fgd gdfgt etg dfgt dfgd ert4 gd fgg wr 235 wer3 we vsdf sdf gdf ert xcv sdf rwer hfd dfg cvb rwf afb dfh jgh bmn lgh rty gfds cxv xcv xcs vdas fdf fgd cv sdf tert sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf shasha9178 shasha9178 shasha9178 shasha9178 shasha9178 liflif2 liflif2 liflif2 liflif2 liflif2 liblib3 liblib3 liblib3 liblib3 liblib3 zhazha444 zhazha444 zhazha444 zhazha444 zhazha444 dende5 dende denden denden2 denden21 fenfen9 fenf619 fen619 fenfe9 fe619 sdf sdf sdf sdf sdf zhazh90 zhazh0 zhaa50 zha90 zh590 zho zhoz zhozh zhozho zhozho2 lislis lls95 lili95 lils5 liss9 sdf0ty987 sdft876 sdft9876 sdf09876 sd0t9876 sdf0ty98 sdf0976 sdf0ty986 sdf0ty96 sdf0t76 sdf0876 df0ty98 sf0t876 sd0ty76 sdy76 sdf76 sdf0t76 sdf0ty9 sdf0ty98 sdf0ty987 sdf0ty98 sdf6676 sdf876 sd876 sd876 sdf6 sdf6 sdf9876 sdf0t sdf06 sdf0ty9776 sdf0ty9776 sdf0ty76 sdf8876 sdf0t sd6 sdf06 s688876 sd688 sdf86