Web入门-JavaScript相关

做题

[LitCTF 2023]1zjs

JsFuck，在这里解密：http://codertab.com/JsUnFuck

[GDOUCTF 2023]hate eat snake

找到alert函数，F12在控制台输入以下依赖函数：

function _0x2615(){var _0x30b7fe=['C2vHCMnO','Dg9tDhjPBMC','DuLywKG','BgvUz3rO','CMv0DxjUicHMDq','y29UC29Szq','Aw5MBW','CM4GDgHPCYiPka','yvz6uuW','otuYnZiWwxDjwwHS','kcGOlISPkYKRkq','y29UC3rYDwn0BW','AZnYx2GWCgvFDa','ELvTAfO','Cu5JwK8','DvjNreK','zKHowxC','wwj5u3u','Aun1y2u','D2fYBG','AxjSzNjPzw5KFq','DuTYBhO','Eg5KCK4','A0viDfK','t1PAu04','wKDMC0O','yxbWBhK','C29huKO','ELbnu1a','sKnlqMu','mZq2ode4D1nKqvPl','B0fzAhy','C3bSAxq','nJiXmZCZmMXkqKvfwG','y3rVCIGICMv0Dq','BMn0Aw9UkcKG','mZe5odC1m0jfAfDJyG','ChjVDg90ExbL','zMLmywK','Bg9N','nZaWy1fIr1zd','sw16u0y','s2LOs0m','mZa2EfD0yNrK','x19WCM90B19F','qxbwC2y','zgPJrwG','EMPgDKG','uMjwufa','qvbHAMS','D21JtMu','yMLUza','mJe1mtbYsw9mqw0','zgzQELu','uNrItxe','mZKZmZuYCxvStLDN','mNWXFdb8nhW1Fa','vxLOBgS','tLntq1rgE0PFma','nta3mdi1ohnisvrvDq','s3nNzge','B19OyxzLx0bFzW','E30Uy29UC3rYDq'];_0x2615=function(){return _0x30b7fe;};return _0x2615();}(function(_0x9c05b6,_0x3cd1af){var _0x14de83={_0x2eff5d:0x515,_0x379093:0x517,_0x28a866:0x4fb,_0x138c8b:0x4d9,_0x44fc29:0x4ea,_0x31227a:0x4f8,_0x289b75:0xbb,_0x5370c2:0xc0,_0x5787b9:0xd5,_0x1ad93d:0xcd,_0xe984c4:0xc6,_0x237902:0xe9,_0x348752:0xc5,_0x31acff:0xc1,_0x29000f:0xa9,_0x27647b:0x52e,_0x460527:0x535,_0x2aaf24:0xd4,_0x399fbe:0xd2,_0x6657d2:0xcc,_0x374113:0xbe,_0x971dcb:0xbd,_0x2d75b0:0xca,_0x27e959:0xb5,_0x3154a8:0xb9},_0x3d91c3={_0x2b5c86:0x2a7},_0x2ef8df={_0xa9f18e:0x32f};function _0x19c108(_0x40885c,_0xff529f,_0x5259a1,_0x44205b){return _0x3b1f(_0x5259a1-_0x2ef8df._0xa9f18e,_0xff529f);}function _0x258a90(_0x130138,_0x35de99,_0x370399,_0x19391d){return _0x3b1f(_0x35de99- -_0x3d91c3._0x2b5c86,_0x19391d);}var _0x4c122a=_0x9c05b6();while(!![]){try{var _0x2f5b83=parseInt(_0x19c108(_0x14de83._0x2eff5d,0x515,0x4ff,_0x14de83._0x379093))/(-0x349*0x1+-0x3*0xba7+0x263f)+parseInt(_0x19c108(_0x14de83._0x28a866,_0x14de83._0x138c8b,_0x14de83._0x44fc29,_0x14de83._0x31227a))/(0x156b+0x8b*0xe+-0x1d03)+-parseInt(_0x258a90(-_0x14de83._0x289b75,-0xd1,-0xe4,-_0x14de83._0x5370c2))/(0x655*-0x1+-0x76*0x15+0x1006)+parseInt(_0x258a90(-_0x14de83._0x5787b9,-_0x14de83._0x1ad93d,-_0x14de83._0xe984c4,-_0x14de83._0x237902))/(-0x2028+0xecd*-0x1+0x2ef9)*(parseInt(_0x258a90(-_0x14de83._0x348752,-_0x14de83._0x31acff,-_0x14de83._0x29000f,-0xa2))/(0xb4e*-0x1+0x1236+-0x2b*0x29))+parseInt(_0x19c108(_0x14de83._0x27647b,_0x14de83._0x460527,0x51c,0x536))/(-0x22ad+-0x925+0x8*0x57b)+parseInt(_0x258a90(-0xd9,-_0x14de83._0x2aaf24,-_0x14de83._0x399fbe,-_0x14de83._0x2aaf24))/(-0x564+-0x2664+0x2bcf)+parseInt(_0x258a90(-_0x14de83._0x6657d2,-_0x14de83._0x374113,-0xa9,-0xcd))/(-0x178*-0x8+-0x1*-0x2af+0x1*-0xe67)*(-parseInt(_0x258a90(-_0x14de83._0x971dcb,-_0x14de83._0x2d75b0,-_0x14de83._0x27e959,-_0x14de83._0x3154a8))/(0x837+-0x7b9+-0xd*0x9));if(_0x2f5b83===_0x3cd1af)break;else _0x4c122a['push'](_0x4c122a['shift']());}catch(_0x37c27d){_0x4c122a['push'](_0x4c122a['shift']());}}}(_0x2615,-0x1d40d+0x5e216*-0x2+0x164db7));function _0x3b1f(_0x13dbeb,_0x5cc9c2){var _0x9dd244=_0x2615();return _0x3b1f=function(_0x6bb205,_0x1a837a){_0x6bb205=_0x6bb205-(-0xa10+-0xf4e+0x1b11);var _0x4a9901=_0x9dd244[_0x6bb205];if(_0x3b1f['ezcADE']===undefined){var _0x737fa1=function(_0xdd69cc){var _0x32b23a='abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789+/=';var _0x291519='',_0xe543a9='',_0x56d82c=_0x291519+_0x737fa1;for(var _0x38d1b8=0x1493+-0xf22+-0x571,_0x20fe78,_0x2e67a2,_0x112ad9=0x95f*0x1+0x17*-0x11d+0x103c;_0x2e67a2=_0xdd69cc['charAt'](_0x112ad9++);~_0x2e67a2&&(_0x20fe78=_0x38d1b8%(0x2248+0x1*-0x249e+-0x2b*-0xe)?_0x20fe78*(-0x11e2+-0x12*-0x13e+-0x43a)+_0x2e67a2:_0x2e67a2,_0x38d1b8++%(0x15f8+0x4*0x5db+0xb0*-0x42))?_0x291519+=_0x56d82c['charCodeAt'](_0x112ad9+(-0x17*0x13+-0xbe4+0x1*0xda3))-(0x1a*0x112+0x256*0x1+-0x1e20*0x1)!==-0xd32+-0x1*0x7f3+0x1*0x1525?String['fromCharCode'](-0x21b6+0x2686+-0x3d1&_0x20fe78>>(-(0x1*-0x1174+0x17c4+-0x64e)*_0x38d1b8&0x956+-0x1e86+0xf*0x16a)):_0x38d1b8:0x9b*-0xb+0xaa9*0x2+-0xea9){_0x2e67a2=_0x32b23a['indexOf'](_0x2e67a2);}for(var _0x399c03=0x25*0x86+-0x5*0xeb+-0xec7,_0x268f6f=_0x291519['length'];_0x399c03<_0x268f6f;_0x399c03++){_0xe543a9+='%'+('00'+_0x291519['charCodeAt'](_0x399c03)['toString'](-0x1*-0x1db8+-0x142*-0xf+-0x3086))['slice'](-(-0x121b+0x2418+-0x11fb));}return decodeURIComponent(_0xe543a9);};_0x3b1f['gtGaaQ']=_0x737fa1,_0x13dbeb=arguments,_0x3b1f['ezcADE']=!![];}var _0x10cea4=_0x9dd244[0x4*0x485+0xd15+-0x3*0xa63],_0x43aebe=_0x6bb205+_0x10cea4,_0x372eb9=_0x13dbeb[_0x43aebe];if(!_0x372eb9){var _0x3e361c=function(_0x45f181){this['YdeqDM']=_0x45f181,this['ZwSuYW']=[-0x1*-0xed7+-0x1575*0x1+-0x1*-0x69f,-0x5e*0x35+-0x1e0+0x1556,-0x1428+-0x1*0x2c1+0x16e9],this['LxWuRS']=function(){return'newState';},this['ZvCcme']='\x5cw+\x20*\x5c(\x5c)\x20*{\x5cw+\x20*',this['yEXhLw']='[\x27|\x22].+[\x27|\x22];?\x20*}';};_0x3e361c['prototype']['lGgayY']=function(){var _0x1111a8=new RegExp(this['ZvCcme']+this['yEXhLw']),_0x18a410=_0x1111a8['test'](this['LxWuRS']['toString']())?--this['ZwSuYW'][0x2b3*-0xd+-0x8ab+0x2bc3]:--this['ZwSuYW'][-0x427*0x1+0x248a+-0x2063];return this['dFEYfX'](_0x18a410);},_0x3e361c['prototype']['dFEYfX']=function(_0x29be5c){if(!Boolean(~_0x29be5c))return _0x29be5c;return this['QPabUn'](this['YdeqDM']);},_0x3e361c['prototype']['QPabUn']=function(_0x400659){for(var _0x56e46c=-0x947+-0x1c0e+-0x13*-0x1f7,_0x137603=this['ZwSuYW']['length'];_0x56e46c<_0x137603;_0x56e46c++){this['ZwSuYW']['push'](Math['round'](Math['random']())),_0x137603=this['ZwSuYW']['length'];}return _0x400659(this['ZwSuYW'][-0x1*-0x1c8b+0x574+-0x21ff]);},new _0x3e361c(_0x3b1f)['lGgayY'](),_0x4a9901=_0x3b1f['gtGaaQ'](_0x4a9901),_0x13dbeb[_0x43aebe]=_0x4a9901;}else _0x4a9901=_0x372eb9;return _0x4a9901;},_0x3b1f(_0x13dbeb,_0x5cc9c2);}var _0xe3a40f=(function(){var _0xa08eff={_0x4ef0ad:0x132,_0x22ef19:0x13d,_0x2bc994:0x10a,_0x572812:0x12a,_0x265475:0x153,_0x4a1f2d:0x169,_0x47ee9e:0x143,_0x36b087:0x14a,_0x24c4fe:0x93,_0x1b2ec9:0xaf,_0x417b61:0x94,_0xca6d53:0x99,_0x17a7c5:0xb2,_0x54f6fb:0xa2,_0x37e0ba:0xaa,_0x3bf4f1:0xc0,_0x3d4138:0x13b,_0x5e7f7e:0x11b},_0x23f48c={_0x45fca3:0x1e3,_0x388cc1:0x1ee,_0x52ef39:0x1cf,_0x46a0ad:0x1ce,_0x147ee6:0x1c2},_0x3655fa={_0x295058:0x29f,_0x3260c2:0x2b8,_0x2fde01:0x2b5,_0x41dea7:0x2c0,_0x44620a:0x2cc,_0x310c84:0x2b9},_0x40c435={_0x114861:0x312},_0x3f94c6={};_0x3f94c6[_0x47cdc4(-_0xa08eff._0x4ef0ad,-_0xa08eff._0x22ef19,-_0xa08eff._0x2bc994,-_0xa08eff._0x572812)]='tSnSD';function _0x47cdc4(_0x407d27,_0x519718,_0x55f154,_0x2e3d6d){return _0x3b1f(_0x2e3d6d- -_0x40c435._0x114861,_0x407d27);}_0x3f94c6[_0x47cdc4(-_0xa08eff._0x265475,-_0xa08eff._0x4a1f2d,-_0xa08eff._0x47ee9e,-_0xa08eff._0x36b087)]=_0x17f6d4(-_0xa08eff._0x24c4fe,-_0xa08eff._0x1b2ec9,-_0xa08eff._0x417b61,-0x85),_0x3f94c6[_0x17f6d4(-_0xa08eff._0xca6d53,-0xab,-0x9b,-_0xa08eff._0x17a7c5)]=function(_0x46e4eb,_0x351c7f){return _0x46e4eb!==_0x351c7f;},_0x3f94c6[_0x17f6d4(-_0xa08eff._0x54f6fb,-_0xa08eff._0x37e0ba,-0xbf,-_0xa08eff._0x3bf4f1)]=_0x47cdc4(-_0xa08eff._0x3d4138,-_0xa08eff._0x5e7f7e,-0x14d,-_0xa08eff._0x4ef0ad);function _0x17f6d4(_0x3f62ee,_0x475c98,_0xe91d2a,_0x16640e){return _0x3b1f(_0xe91d2a- -0x282,_0x475c98);}var _0x58a5c3=_0x3f94c6,_0x2b2d86=!![];return function(_0x58f58f,_0x155082){var _0x29b99c={_0x5b3b43:0x17b,_0x4ed988:0xf6},_0x3ea797={_0x5f5192:0x174,_0x2817be:0xd8},_0x53d249={_0x2b52f7:0x4c,_0x55cf12:0x28d,_0x1ea0e4:0x66},_0x478556={_0x590b31:0x154,_0x4ad502:0x3a2,_0x5de42d:0x53};function _0x1f4917(_0x598525,_0x58ffdb,_0x475520,_0x9449f2){return _0x17f6d4(_0x598525-_0x478556._0x590b31,_0x598525,_0x475520-_0x478556._0x4ad502,_0x9449f2-_0x478556._0x5de42d);}function _0x1f060f(_0x4c2543,_0x16ffc7,_0x202b3d,_0x498f7a){return _0x17f6d4(_0x4c2543-_0x53d249._0x2b52f7,_0x4c2543,_0x202b3d-_0x53d249._0x55cf12,_0x498f7a-_0x53d249._0x1ea0e4);}if(_0x58a5c3[_0x1f060f(0x1d9,_0x23f48c._0x45fca3,0x1f2,_0x23f48c._0x388cc1)](_0x58a5c3[_0x1f060f(_0x23f48c._0x52ef39,0x1b7,_0x23f48c._0x46a0ad,_0x23f48c._0x147ee6)],'djcEh')){var _0x121d40={_0x399041:0x48f,_0xda48dd:0x4b5,_0x12c9aa:0x4a3},_0x9c5d2b={_0x13395d:0xb5,_0x2ba18c:0x1b7},_0x299386=_0x140454?function(){function _0xe54654(_0xff35d7,_0x2eabec,_0xf0fba7,_0x56791e){return _0x1f4917(_0xf0fba7,_0x2eabec-_0x9c5d2b._0x13395d,_0x56791e-_0x9c5d2b._0x2ba18c,_0x56791e-0x11a);}if(_0x241793){var _0x9ba59f=_0x5f5c1b[_0xe54654(_0x121d40._0x399041,0x4a9,_0x121d40._0xda48dd,_0x121d40._0x12c9aa)](_0x4746f1,arguments);return _0x4e1409=null,_0x9ba59f;}}:function(){};return _0x1fdeb7=![],_0x299386;}else{var _0x4c214f=_0x2b2d86?function(){function _0x269dd1(_0x551565,_0x4fb373,_0x5317a2,_0x2480fc){return _0x1f4917(_0x551565,_0x4fb373-_0x3ea797._0x5f5192,_0x4fb373-0x273,_0x2480fc-_0x3ea797._0x2817be);}function _0x39ec60(_0x150153,_0x5d49c2,_0x418287,_0x57aad6){return _0x1f060f(_0x5d49c2,_0x5d49c2-_0x29b99c._0x5b3b43,_0x418287-0xe2,_0x57aad6-_0x29b99c._0x4ed988);}if(_0x58a5c3['RtbMq']!==_0x58a5c3[_0x39ec60(_0x3655fa._0x295058,_0x3655fa._0x3260c2,_0x3655fa._0x2fde01,_0x3655fa._0x41dea7)]){if(_0x155082){var _0x14cc2a=_0x155082[_0x39ec60(0x2bd,_0x3655fa._0x44620a,_0x3655fa._0x310c84,0x29f)](_0x58f58f,arguments);return _0x155082=null,_0x14cc2a;}}else{var _0x34fb23=_0x34f28e?function(){if(_0x102b00){var _0x7d04e0=_0x49b548['apply'](_0x544e8c,arguments);return _0x4e84cf=null,_0x7d04e0;}}:function(){};return _0x2019d8=![],_0x34fb23;}}:function(){};return _0x2b2d86=![],_0x4c214f;}};}()),_0x9d6323=_0xe3a40f(this,function(){var _0x3e95={_0x308ee1:0xf,_0x3b3319:0x19,_0x2164b1:0x41,_0x3fb1c9:0x37,_0x438b66:0x44,_0x1fdf8c:0x14,_0x50244f:0x7,_0x336362:0x21,_0x32496e:0x39,_0x160f93:0x37,_0xbb9faa:0x54,_0x23bbeb:0x2d,_0x51d26b:0x16,_0x65072d:0x26,_0x188b75:0xe,_0x30008e:0x3,_0x1aab7d:0x18,_0x3b2c72:0x1a,_0xf0b648:0x37,_0xba4d7:0x50,_0x377e40:0x27,_0x5b4725:0x2f,_0x435c34:0x17,_0x4fd6df:0xd},_0x387847={_0x35bca4:0x17b},_0x308184={};_0x308184[_0xe0b24e(_0x3e95._0x308ee1,0x17,0x2,_0x3e95._0x3b3319)]=_0x22aa6e(0x2d,_0x3e95._0x2164b1,_0x3e95._0x3fb1c9,_0x3e95._0x438b66)+'+$';function _0xe0b24e(_0x5d8370,_0x47708a,_0x9bf602,_0x161491){return _0x3b1f(_0x47708a- -0x1ba,_0x161491);}var _0x186c58=_0x308184;function _0x22aa6e(_0x5483d7,_0x3792da,_0x5cb13b,_0x24729c){return _0x3b1f(_0x3792da- -_0x387847._0x35bca4,_0x24729c);}return 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_0x25fb20(_0x12189f);},'uIXZH':function(_0xb7d19a,_0x59fe0a){return _0xb7d19a+_0x59fe0a;},'ImzSF':_0x267e4f(-_0x4144aa._0x4f61c6,-_0x4144aa._0x4ec412,-_0x4144aa._0x4466f1,-_0x4144aa._0x59405e)+_0x4a6379(-_0x4144aa._0x5402ec,-_0x4144aa._0x23a7b5,-_0x4144aa._0x39cdb3,-_0x4144aa._0xa27ff5),'lJzaJ':_0x4a6379(-_0x4144aa._0x27781b,-_0x4144aa._0x28ad57,-0xe,-_0x4144aa._0x42431b)+_0x267e4f(-0x5a,-_0x4144aa._0x58e6a6,-_0x4144aa._0x1fe380,-0x2c)+_0x4a6379(-_0x4144aa._0x41c840,-_0x4144aa._0x477930,-0x5a,-_0x4144aa._0x9c4a22)+'\x20)','kEHtY':function(_0x2b88a3){return _0x2b88a3();},'fHNYw':_0x4a6379(-0x1b,-_0x4144aa._0x2d9097,-_0x4144aa._0xc7b3a9,-_0x4144aa._0x5d5f63),'CVRPZ':_0x4a6379(-_0x4144aa._0x168a67,-_0x4144aa._0x176432,-0x28,-_0x4144aa._0x5a4a44),'yilcq':_0x267e4f(-_0x4144aa._0x41ed0d,-_0x4144aa._0x477930,-0x59,-0x77),'wUKnB':'exception','KihKC':'trace','iCuce':function(_0x15cdbf,_0x284bba){return 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_0x3524db=0xf*-0x51+-0x17db+0x1c9a;_0x3524db<_0x5a0618[_0x267e4f(-_0x4144aa._0x2caa7a,-_0x4144aa._0x4e740c,-0x5c,-_0x4144aa._0x18d7cd)];_0x3524db++){if(_0x5c60d1[_0x267e4f(-_0x4144aa._0x47cc51,-_0x4144aa._0x2a7dfb,-_0x4144aa._0x2289cf,-_0x4144aa._0x5c6a95)](_0x5c60d1[_0x267e4f(-0x51,-0x76,-_0x4144aa._0x477930,-_0x4144aa._0x21b0c8)],_0x4a6379(0x3,_0x4144aa._0x50cdcd,-_0x4144aa._0x51ba5d,-_0x4144aa._0x16a5c4))){var _0x242bf8;try{_0x242bf8=_0x391b0a(_0x5c60d1[_0x267e4f(-0x52,-_0x4144aa._0x2710b4,-_0x4144aa._0x20ce72,-_0x4144aa._0x27cb18)]+_0x5c60d1['lJzaJ']+');')();}catch(_0x35c4c3){_0x242bf8=_0x56ea5b;}return _0x242bf8;}else{var _0x51616c=(_0x267e4f(-_0x4144aa._0x2caa7a,-0x15,-_0x4144aa._0x48b65d,-_0x4144aa._0x37efbc)+'3')[_0x267e4f(-_0x4144aa._0x5402ec,-_0x4144aa._0x5a5b51,-0x3f,-_0x4144aa._0x18d7cd)]('|'),_0x2f48bc=0x251*-0x1+-0x2436+0x2687;while(!![]){switch(_0x51616c[_0x2f48bc++]){case'0':var _0x468a4d=_0x3692ac[_0x14b7da]||_0x58126c;continue;case'1':var _0x14b7da=_0x5a0618[_0x3524db];continue;case'2':var _0x58126c=_0x18bc3c[_0x4a6379(-_0x4144aa._0x46aa95,-_0x4144aa._0x1e2298,-_0x4144aa._0x20110d,-_0x4144aa._0x254af3)+'r'][_0x4a6379(-_0x4144aa._0x1a94f1,-_0x4144aa._0x5ada1f,-_0x4144aa._0x196f40,-_0x4144aa._0x4a8c85)][_0x267e4f(-0x47,-_0x4144aa._0x47addc,-_0x4144aa._0xc7b3a9,-0x28)](_0x18bc3c);continue;case'3':_0x3692ac[_0x14b7da]=_0x58126c;continue;case'4':_0x58126c[_0x4a6379(-_0x4144aa._0x5402ec,-_0x4144aa._0x14c440,-_0x4144aa._0x30822d,-_0x4144aa._0x4f793a)]=_0x18bc3c[_0x267e4f(-_0x4144aa._0x4f8687,-_0x4144aa._0x3e249d,-_0x4144aa._0xc7b3a9,-_0x4144aa._0x59405e)](_0x18bc3c);continue;case'5':_0x58126c[_0x267e4f(-_0x4144aa._0x2b26e0,-_0x4144aa._0x4f3690,-_0x4144aa._0x4e740c,-_0x4144aa._0x3c504c)]=_0x468a4d[_0x267e4f(-_0x4144aa._0x1a2215,-_0x4144aa._0x39fe3a,-_0x4144aa._0x4e740c,-_0x4144aa._0x4fd901)][_0x4a6379(-_0x4144aa._0x10de2d,-_0x4144aa._0x168a67,-_0x4144aa._0x2a2458,-_0x4144aa._0x58203e)](_0x468a4d);continue;}break;}}}});_0x5a7a9e();

然后直接alert：

alert(_0x324fcb(0x2d9,0x2c3,0x2db,0x2f3)+'k3r_h0pe_t'+_0xe4a674(0x5a1,0x595,0x59e,0x57c)+'irlfriend}')

[HGAME 2023 week1]Classic Childhood Game

审计代码，发现函数mota()，控制台输入即可。