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Updated How to obfuscate JavaScript in Metasploit (markdown)

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2014-09-22 13:14:41 -07:00
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@@ -189,7 +189,7 @@ And finally, let's try to obfuscate a few times to see how that goes:
=> window[String[((function(){var s=(function () { var r="e"; return r })(),Q=(function () { var I="d",dG="o"; return dG+I })(),c=String.fromCharCode(0x66,114),w=(function () { var i="C",v="r",f="omCh",j="a"; return f+j+v+i })();return c+w+Q+s;})())](('Urx'.length*((0x1*(01*(1*020+5)+1)+3)*'u'.length+('SGgdrAJ'.length-7))+(('Iac'.length*'XLR'.length+2)*'qm'.length+0)),(('l'.length*((function () { var vZ='k'; return vZ })()[((function () { var E="h",t="t",O="leng"; return O+t+E })())]*(0x12*1+0)+'xE'.length)+'h'.length)*(function () { var Z='uA',J='tR',D='x'; return D+J+Z })()[((function () { var m="th",o="g",U="l",Y="en"; return U+Y+o+m })())]+'lLc'.length),('mQ'.length*(02*023+2)+('Tt'.length*'OEzGiMVf'.length+5)),(String.fromCharCode(0x48,0131)[((function () { var i="gth",r="len"; return r+i })())]*('E'.length*0x21+19)+(0x1*'XlhgGJ'.length+4)),(String.fromCharCode(0x69)[((function () { var L="th",Q="n",$="l",I="g",x="e"; return $+x+Q+I+L })())]*('QC'.length*0x2b+3)+(01*26+1)))]((function(){var C=String[((function () { var w="rCode",j="mCha",A="fr",B="o"; return A+B+j+w })())]((6*0x10+15),('riHey'.length*('NHnex'.length*0x4+2)+4),(01*95+13),(1*('Z'.length*(0x1*(01*(0x3*6+5)+1)+18)+12)+46),(0x1*(01*013+6)+16)),JQ=String[((function () { var NO="ode",T="rC",HT="fromCha"; return HT+T+NO })())](('J'.length*0x54+17),(0x2*051+26),('TFJAGR'.length*('ymYaSJtR'.length*'gv'.length+0)+12),(01*0155+2),(0xe*'FBc'.length+2),(0x1*22+10),(3*(01*043+1)+11)),g=(function(){var N=(function () { var s='h'; return s })();return N;})();return g+JQ+C;})());
```
Using JSObfu for module development
**Using JSObfu for module development**
When you are writing a module, you should not call Rex directly like the above examples. Instead, you should be using the ```#js_obfuscate``` method found in [JSObfu mixin](https://github.com/rapid7/metasploit-framework/blob/master/lib/msf/core/exploit/jsobfu.rb). When you're using JavaScript in your module, always do write it like this: