This question already has an answer here:

Is it possible to deobfuscate/decrypt this javascript code?

;eval(function(w,i,s,e){var lIll=0;var ll1I=0;var Il1l=0;var ll1l=[];var l1lI=[];while(true){if(lIll<5)l1lI.push(w.charAt(lIll));else if(lIll<w.length)ll1l.push(w.charAt(lIll));lIll++;if(ll1I<5)l1lI.push(i.charAt(ll1I));else if(ll1I<i.length)ll1l.push(i.charAt(ll1I));ll1I++;if(Il1l<5)l1lI.push(s.charAt(Il1l));else if(Il1l<s.length)ll1l.push(s.charAt(Il1l));Il1l++;if(w.length+i.length+s.length+e.length==ll1l.length+l1lI.length+e.length)break;}var lI1l=ll1l.join('');var I1lI=l1lI.join('');ll1I=0;var l1ll=[];for(lIll=0;lIll<ll1l.length;lIll+=2){var ll11=-1;if(I1lI.charCodeAt(ll1I)%2)ll11=1;l1ll.push(String.fromCharCode(parseInt(lI1l.substr(lIll,2),36)-ll11));ll1I++;if(ll1I>=l1lI.length)ll1I=0;}return l1ll.join('');}('fa31e1s212a27333718263o012z1o273z2q193x3e1b3q0z112m3o01202m3x3s37242v323n11203a251q273321162z2x23211c3s291z113a231s2535211432261y1110161z153x292q1731261s3u2t312p1z3w243e153v2b2o19312411101o253c1i2c2b38162x3s12111m380w121139233v313b36182v3u121z1o2c182v39233v2b233v3b213x2b213x1z113u2711203u291s3u271r2q1g27203q3e1x23121b3x1z1120243514312o1b3x1z1k1t35211b322n3e113u2o2z1q1g25311o1o251z1s253t193z26143e1e3c3b361c3y29341v3w2u3o3u37323b3p3720391914311411121m252c1q111z3w243e1d353a3v111z21141g1u1k181f1k1g1l1d1j3c181e1t3e1c1g1d3d143e1m3g1k1e1w1g141d172c1t2e102e1u2e112c1t2d1u2e1s1e152e1v2e1y2c1u2e152e1t3g1w2c1u2c1k2e1u1e1z2e1w1c1x2c1s3f1w2e1t2e1v2c1s2d172e1t2e1u2e1u2c1e2c1u2g1t2e1u2f1t2c1s3e1x2e1s3g142e1w2e1y2c1t3g1z2e1s1e1u2c1s2e1v2e1t2e1v2e1v2c1v2c1s3f1w2e1u3e1s2c1s3e1h2e1s2f192e1u3d102c1s2f182e1s3f1j2c1s1d172e1s3g102e1u3d172c1u3f1u2e1s3f1b2c1s3d1t2e1s2f172e1w3d1v2c1s3f192e1t3e1e2c1s3d182e1u3f1y2e1u3d192c1u3f182e1s1f1b2c1u3d1e2e1s3f172e1u3e1r2c1s2f192e1s3g1e2c1s3d192e1s3g1w2e1u1d172c1s3g192e1s3f192c1s3d1b2e1s2e1u2e1u1c1f1c1b2g1e3g1c1e1k1e1m3e1r3d1c3f1c3f1k2d123d1l2f1c2f1p1e1d3c1f3e1c1g1p1g1c1g1s3e1f1c1f1f1c3e1d1f181e1s1d1b1g1c3f1c3g1i3d1g2c1f1e1d1e1c1g1r3c1f1c183f131g1h2e1d1d1k1e1d1e1g1g1j3g1l3e1j1e141g1e3f1p1g1r1e1i1e1b2e1c1g1h3d1f2d1c1c1s2g1c1f1f3g143c1f3d1f1e1p3f1o3e1f3e181e1d1e121e1b1f1b1d1f1d1d1f1j1g1c2e1q2c1f1c1f1e1d3f1c1e1a1b1f1e1h1e1r2e1t3e102c1u2c1t1e142e1t2g1v2c1u3e1u1e1t3e1t2e1w3c1z2c1r1e1w3e192e1a2c1s1c141r123e161e1m3e1i2e1f3f142e1i3f1c1e1i1d1q2g1j1e123g1e1c1t3e142e1u2g1r2e1u2c112c1u2e1g2e1u3e1v2c1w2e1w2e1t3e1t2e1w2e1i2c1t2e1x2e1u2f102c1w2c182e1s2g1x2e1w2e1d2c1s1f162e1s3e112c1u1e1g2e1u1e1u2e1v2c1m2c1u2e162e1s2g1r2c1u1d192e1u2g1p2e1w1e1z2c1s2g1y2e1s3f122c1u2c1w2e1s1f1k2e1t2e1x2c1t3g1g2e1s1f1b2c1w3d182e1s3f192e1v3e182c1s1f172e1u3f1e2c1u2d172e1u3g1g2e1u3d1b2c1u3f1d2e1s3f1a2c1w3e1e2e1s3f172e1u3d192c1s2f172e1u3e1c2c1u3d182e1s3g1a2e1u3d1a2c1s3f1a2e1s1f192c1v3d1b2e1s3f192e1u3d172c1s2f172e1u3g1y2c1u1d172e1s3f1b2e1u3d192c1s3e1z2e1s3e1y2c1m1c123f1o1g1k1f163e141d142g1s2g1c1f163e123d1i1f1d3e1d2f181e1e1d1b1f1q3f1c1g1i3d1i1c1d1e1c1e1c1g1r3c1e1c183f131g1h2e1d1d1m1d1f1e1g2e1s2g1l3e1f1c1j3e1c2f1b1g1l1d1a1c122e192f1b2f1d1d1d2d1b1e181e1d3f1a3d173c1i1f1s3f1f2g1e3e1h1c1f3e1b1e191f1t1e1u1e121e1u1g143f1e3d191d1h1f1s2g1j2g1r1c1c3e181f1p3g1d1e1j3c1e1c1g2e1c1g1h2e1k1e1e3d1f2e1r1g1v2e1w2e1w2c1s2e1w2e1p2e1w1e1v2c1s2e162e1u1f1y2c1w1c1x2e143f183f172d1z1c191m2k1g1e3g1c1c1i3c1r1g1j1f1k1e1d3c1g1d1i1f1g2e1h1g1b2c152c1w1e1o2e1t2e152c1s1c1q2e1s3g1f2e1u2c1e2c1u3g1g2e1u1f1x2c1t2e1l2e1u2g1t2e1u3e1z2c1u2e1c2e1u1e1x2c1u2c1j2e1s1e1u2e1s2c1w2c1v2e102e1u2e1z2c1t2d1w2e1s1e152e1t3e1y2c1w2e152e1t3g1u2c1u2c1m2e1u1e1z2e1u1c1x2c1u3f1w2e1t2e1t2c1s2d192e1t3e1z2e1s3d182c1u3e1b2e1s3f192c1u3e1f2e1s3f182e1s3d1d2c1u2f172e1t3f1z2c1s1d192e1s3e1k2e1s3d172c1u3f162e1s1f192c1s3d172e1s3f182e1s3d1v2c1u3f192e1s3g1g2c1s2d1b2e1s3f1b2e1s1d172c1u3e1q2e1s3f192c1u3d1v2e1s3f182e1u3e1y2c1u3f172e1s3f192c1s3d192e1s2e1u2e1s2e1f1c143g193f1q1e1m3d1r3b1f3f1c3e1b2e1m3c1y2d1m3g1c3e1c1g1m3c1d1c1a3g133g1h2e1b2d1k1e1e1e1g2e1s1g1c3e1f1c1l3e1d1f1b3f1j3d181c142e193g1c1g1g3d1g2c1e3f1s1g1k3e1l1c1i1e1j1g1c2g1k3f1k1d1k3e1m3g1c3f1c3g1j1e1h3e161e1c1g1f3f1s3c1d1c1e1e1i2g121f141d1f2d1d1g1h3d1s2f1s2d1f3c1f2g143g1o1g1a1e1i3c1l1e1c1g1c3e1x1c122c1b1f1s1f1b3f1w1e1s2e1h3e152e1r2f1t2c1u2c1e2e1w2e1u1e1q2c1t2c1x2e162f1u2e1u3c1j2c1w1e192f1r3e192c153c191v1c2s1b2m1u1t2d1s1r1r14','d312em3q1v3s241a291u3b3x2z1d3q01121m27212q1b3v3e1k1b3x1z1k1c21193s3y1121161z153x3b2q1732261u3u2t322p113w243e153x3b2o192226113z1o252e1i3c2b381y2x3s11121o380w11122b233v312b381y2v3u11121o3c182v213p1z323a251s25352e16212v252e183u2711113a251q27352e162z381y1c3u271y2u29183s291u2u291o3e113w281z113w28113u263u2o3q0z11212b3y121o272e2q1z1z231411101o272e3q2m37222q113z312b233x3038163q011c1e2v2e2b2o142u11121d311q11313825373w273u273t15382111113a391z31161j111c1o2e182v3z2r2e2b233v312q1i29313e2b3y141m141j1e1e1d1e1e1h1e122f1m1e1e2e1m1e1a3g181g171g1m1c1k1f1f2e1s1f1t2e1v2e1t2e1s3e1w2e1u2g1g2c1u1e1z2e1s3e1t2e1w2c142e1s2g1p2e1w1e1m2c1u3e1h2e1u3f112e1u3c1z2e1t1f1u2e1u1f1w2c1s2e1u2e1t3g1x2e1w2c1v2e1u3g192e1w1f102c1t2g1q2e1s2f102e1v2e1l2e1t1e1u2e1v2e1u2c1s2e1y2e1s3e1b2e1w2e102e1s3e172e1v3g1v2c1s2f172e1s3f1z2e1u3d172e1s3f1b2e1u2f1b2c1s3f1a2e1s1f1b2e1v3e162e1s3f182e1u3f1x2c1s2f172e1t3f1e2e1u3d182e1s3f142e1u3f1b2c1u3f1a2e1s3f1a2e1u3d1h2e1s1f192e1u3f1f2c1s3f172e1s3f1v2e1u2d192e1s3f162e1u3f192c1t3e1i2e1s2f192e1u3e192e1s3f172e1w2e1w2c1s2e1e1e1f1e1r1g1e1c1k2f1d3e1b2e161e141e143f1s3f1c1g1w1f1y2d1j2f181g121d1e3g1g3e1m1e1b3e1c3f1l3g153e1l1e1i1g1h1f1i2e1a1c1f2f161g1s1f1l3e1e1c1g3g141f1h3g1b3g1e3d1s1g1m3e1c1e1e3f1e3d1f3f1f3f1c3f1e1f1d2d1e3f1e3f1b2g1u3e1h1c141g1s2g1f3f1t3d1e3d1f1e1f1e181e1e2g1d2c1c1g1b3f1g2e1e2e1e1e1k1e1d3e1g1f1i2e1l1d1t2e1s1g1j3e1f3g1a1c1d3g1i1g1f1e1i3e1w2c182e1s3e1s2e1h3e1w2e1v2e1u2e102e1h2f162c1u2e102e1u1e1h2f162d1y2f1x2e1h192g1h163e1h2f183g1r3e1c3e1w3e1c1g1i3e1j1e1q1e1j2c1a1d1g3f142e1w2g1v2c1w2f1r2e1s3g1z2e1u2e162e1u2g1y2e1v2g112c1u2e1s2e1s2g1x2e1v2c1x2e1t3e1v2e1u3f1y2c1w3e1q2e1s3g1j2e1u2c112e1s2e1e2e1u2e1k2c1u3e1z2e1u2e1x2e1w1d1t2e1t1e1g2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1r2e1u1t2d2r1d2k2h221o','6fa51bac150ef9f7e25fbe006e71b61b'));

And please tell me how you did it, if you're a ninja and decrypted all that.

marked as duplicate by perror, 0xec, Dominik Antal, jvoisin, Ange Aug 18 '14 at 10:33

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • Try something, then tell us what and how you failed. Just don't ask us to do your analysis. – Ange Aug 18 '14 at 10:33

Replace return l1ll.join(''); with alert(lIll.join('')); and the pre-obfuscated code will pop right out.

It's incorrect to call this a decryption. It's just a de-obfuscation.

  • Not working.. It pop ups the obfuscated code anyways. – Afonso Aug 16 '14 at 16:52
  • 1
    the code is obfuscated many of times. you should really just write a html page to print everything on it using document.write(obj) or something. Any way, the end result seems to be: (function ola(a){var important="m" console.log(a)})("a") – Sigtran Aug 17 '14 at 16:17
  • 1
    You should probably move this to an answer, since you unraveled the final value. – Jeff-Inventor ChromeOS Aug 18 '14 at 9:14

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