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NoSource JR + NoSource Solve
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var enc_key_jr = "nosource"; // -> "easyctf{" -> "soupy" | |
var enc_key = "heheheh!"; // -> "easyctf{" -> "hoo_hoo!" | |
var flag_nosource_jr = "Fg4GCRoHCQ4TFh0IBxENAE4qEgwHMBsfDiwJRQImHV8GQAwBDEYvV11BCA=="; | |
var flag_nosource = "DQ4cJgsbCVofB18sNw4wRlhfCwAbXxpTC1wwKVlcGBIaUDAGJzowYDoqTiI="; | |
function process(a, b) { | |
'use strict'; | |
var len = Math.max(a.length, b.length); | |
var out = []; | |
for (var i = 0, ca, cb; i < len; i++) { | |
ca = a.charCodeAt(i % a.length); | |
cb = b.charCodeAt(i % b.length); | |
out.push(ca ^ cb); | |
} | |
return String.fromCharCode.apply(null, out); | |
} | |
function dec_flag(flag, boolean) { | |
flag_tmp = atob(flag); | |
if (boolean == 0) | |
console.log(process(flag_tmp, enc_key_jr)); | |
else | |
console.log(process(flag_tmp, enc_key)) | |
} | |
dec_flag(flag_nosource_jr, 0); | |
dec_flag(flag_nosource, 1); |
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