const MD5=function(e){function h(a,b){var c,d,e,f,g;e=a&2147483648;f=b&2147483648;c=a&1073741824;d=b&1073741824;g=(a&1073741823)+(b&1073741823);return c&d?g^2147483648^e^f:c|d?g&1073741824?g^3221225472^e^f:g^1073741824^e^f:g^e^f}
function k(a,b,c,d,e,f,g){a=h(a,h(h(b&c|~b&d,e),g));return h(a<<f|a>>>32-f,b)}
function l(a,b,c,d,e,f,g){a=h(a,h(h(b&d|c&~d,e),g));return h(a<<f|a>>>32-f,b)}
function m(a,b,d,c,e,f,g){a=h(a,h(h(b^d^c,e),g));return h(a<<f|a>>>32-f,b)}
function n(a,b,d,c,e,f,g){a=h(a,h(h(d^(b|~c),e),g));return h(a<<f|a>>>32-f,b)}
function p(a){var b="",d="",c;for(c=0;3>=c;c++)d=a>>>8*c&255,d="0"+d.toString(16),b+=d.substr(d.length-2,2);return b}
var f=[],q,r,s,t,a,b,c,d;e=function(a){a=a.replace(/\r\n/g,"\n");for(var b="",d=0;d<a.length;d++){var c=a.charCodeAt(d);128>c?b+=String.fromCharCode(c):(127<c&&2048>c?b+=String.fromCharCode(c>>6|192):(b+=String.fromCharCode(c>>12|224),b+=String.fromCharCode(c>>6&63|128)),b+=String.fromCharCode(c&63|128))}
return b}(e);f=function(b){var a,c=b.length;a=c+8;for(var d=16*((a-a%64)/64+1),e=Array(d-1),f=0,g=0;g<c;)a=(g-g%4)/4,f=g%4*8,e[a]|=b.charCodeAt(g)<<f,g++;a=(g-g%4)/4;e[a]|=128<<g%4*8;e[d-2]=c<<3;e[d-1]=c>>>29;return e}(e);a=1732584193;b=4023233417;c=2562383102;d=271733878;for(e=0;e<f.length;e+=16)q=a,r=b,s=c,t=d,a=k(a,b,c,d,f[e+0],7,3614090360),d=k(d,a,b,c,f[e+1],12,3905402710),c=k(c,d,a,b,f[e+2],17,606105819),b=k(b,c,d,a,f[e+3],22,3250441966),a=k(a,b,c,d,f[e+4],7,4118548399),d=k(d,a,b,c,f[e+5],12,1200080426),c=k(c,d,a,b,f[e+6],17,2821735955),b=k(b,c,d,a,f[e+7],22,4249261313),a=k(a,b,c,d,f[e+8],7,1770035416),d=k(d,a,b,c,f[e+9],12,2336552879),c=k(c,d,a,b,f[e+10],17,4294925233),b=k(b,c,d,a,f[e+11],22,2304563134),a=k(a,b,c,d,f[e+12],7,1804603682),d=k(d,a,b,c,f[e+13],12,4254626195),c=k(c,d,a,b,f[e+14],17,2792965006),b=k(b,c,d,a,f[e+15],22,1236535329),a=l(a,b,c,d,f[e+1],5,4129170786),d=l(d,a,b,c,f[e+6],9,3225465664),c=l(c,d,a,b,f[e+11],14,643717713),b=l(b,c,d,a,f[e+0],20,3921069994),a=l(a,b,c,d,f[e+5],5,3593408605),d=l(d,a,b,c,f[e+10],9,38016083),c=l(c,d,a,b,f[e+15],14,3634488961),b=l(b,c,d,a,f[e+4],20,3889429448),a=l(a,b,c,d,f[e+9],5,568446438),d=l(d,a,b,c,f[e+14],9,3275163606),c=l(c,d,a,b,f[e+3],14,4107603335),b=l(b,c,d,a,f[e+8],20,1163531501),a=l(a,b,c,d,f[e+13],5,2850285829),d=l(d,a,b,c,f[e+2],9,4243563512),c=l(c,d,a,b,f[e+7],14,1735328473),b=l(b,c,d,a,f[e+12],20,2368359562),a=m(a,b,c,d,f[e+5],4,4294588738),d=m(d,a,b,c,f[e+8],11,2272392833),c=m(c,d,a,b,f[e+11],16,1839030562),b=m(b,c,d,a,f[e+14],23,4259657740),a=m(a,b,c,d,f[e+1],4,2763975236),d=m(d,a,b,c,f[e+4],11,1272893353),c=m(c,d,a,b,f[e+7],16,4139469664),b=m(b,c,d,a,f[e+10],23,3200236656),a=m(a,b,c,d,f[e+13],4,681279174),d=m(d,a,b,c,f[e+0],11,3936430074),c=m(c,d,a,b,f[e+3],16,3572445317),b=m(b,c,d,a,f[e+6],23,76029189),a=m(a,b,c,d,f[e+9],4,3654602809),d=m(d,a,b,c,f[e+12],11,3873151461),c=m(c,d,a,b,f[e+15],16,530742520),b=m(b,c,d,a,f[e+2],23,3299628645),a=n(a,b,c,d,f[e+0],6,4096336452),d=n(d,a,b,c,f[e+7],10,1126891415),c=n(c,d,a,b,f[e+14],15,2878612391),b=n(b,c,d,a,f[e+5],21,4237533241),a=n(a,b,c,d,f[e+12],6,1700485571),d=n(d,a,b,c,f[e+3],10,2399980690),c=n(c,d,a,b,f[e+10],15,4293915773),b=n(b,c,d,a,f[e+1],21,2240044497),a=n(a,b,c,d,f[e+8],6,1873313359),d=n(d,a,b,c,f[e+15],10,4264355552),c=n(c,d,a,b,f[e+6],15,2734768916),b=n(b,c,d,a,f[e+13],21,1309151649),a=n(a,b,c,d,f[e+4],6,4149444226),d=n(d,a,b,c,f[e+11],10,3174756917),c=n(c,d,a,b,f[e+2],15,718787259),b=n(b,c,d,a,f[e+9],21,3951481745),a=h(a,q),b=h(b,r),c=h(c,s),d=h(d,t);return(p(a)+p(b)+p(c)+p(d)).toLowerCase()};(()=>{const open=XMLHttpRequest.prototype.open;XMLHttpRequest.prototype.open=function(){this.addEventListener('load',function(){if(this.responseURL!=='https://gall.dcinside.com/kcaptcha/session'){return}
const hash=this.responseText
console.log('Captcha hash is '+hash)
for(i=parseInt("aaa",36),len=parseInt("zzz",36);i<=len;i++){const value=i.toString(36)
if(hash===MD5(value)){console.log('Captcha is '+value)
document.querySelector('input#code').value=value
return}}
alert('Failed to resolve captcha :(')});open.apply(this,arguments)}})()


캡챠 세션 불러오면 md5 값 반환해주는데 그거 캡챠 값 해시한거임

3-5자까진 무작위 대입하면 1초 내로 답 나옴

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