捌玖网络工作室 - Powered by Discuz! Board

标题: 网页制作中页面的加密和破解 [打印本页]

作者: admin 时间: 2008-1-19 23:24 标题: 网页制作中页面的加密和破解

当你在浏览网页时，看到一个很漂亮的特效，你查看源代码时看到的是一队乱码，那多扫兴呀！根据本人的研究，总结出了三种解密方法，与大家分享！！7 |) `/ S% `* ~1 ?" p

方法一：8 _; s. M! V2 o/ z7 }3 E. w9 z
3 s# k' G6 P6 h# V6 V: C6 m: _
' S& Y, K4 Z9 V3 Z7 a
　　有一种加密的办法是采用javascript的escape()函数，把某些符号、汉字等变成乱码，以达到迷惑人的目的。解密这种代码的办法是采用其反函数加以还原。下面是一个经过加密的例子：
  d) {6 b, o# r! d$ W
<HTML>
<SCRIPT LANGUAGE="javascript">: T4 B& d- }5 L4 Z1 X
var Words ="%3Chtml%3E%3Cbody%20bgcolor%3D%22red%22%3E%3Cp%3E%u8FD9%u662F%u4F8B%u5B50%uFF01%uFF01%uFF1A%uFF09%3C/p%3E%3C/body%3E%3C/html%3E"4 C- t: b2 M* r& E
var NewWords;
NewWords = unescape(Words);
document.write(NewWords)9 _8 M5 G7 r9 L$ e
</SCRIPT>5 w: A  B' a$ N8 a) _, D3 {" w
<BODY>
</BODY>0 S9 w( M9 G( K; u1 j2 g, G5 |
</HTML>

　　这种文件最好解密，一看就明白，关键是unescape()函数起了还原源代码的作用。要想看到加密前的代码是什么样子，可以用下面的办法：3 X1 D7 A3 a' `# I

<HTML><SCRIPT LANGUAGE="javascript">
var Words ="%3Chtml%3E%3Cbody%20bgcolor%3D%22red%22%3E%3Cp%3E%u8FD9%u662F%u4F8B%u5B50%uFF01%uFF01%uFF1A%uFF09%3C/p%3E%3C/body%3E%3C/html%3E"3 [, Q, Z* [$ D6 o2 m9 o7 A( q
var NewWords;, s0 C8 B% J( `9 b6 G
NewWords = unescape(Words);$ Q: W; W. L1 Q! q3 b0 c0 V" s4 p
NewWords=NewWords.toString();% `! e( ~2 I8 Q
function password(){% R1 J2 T5 N0 b, R" Z
document.pw.txtpw.value=NewWords;
}9 {4 }3 K( u1 L8 D) I! j; B9 C
</SCRIPT>. t2 h3 e, N; ]( \. F+ B5 Q
<BODY>
<form name=pw>' r& p4 f$ h9 u. w
<input type=button onclick="password()" value="解密">! ?: |! k* X% Z2 ?3 f5 O
<br>4 I  P0 R! g% y9 C
<textarea name="txtpw" cols="100" rows="100"></textarea>4 Y. M- F- a% E
</form>4 H( R- q. n( v
</BODY>
</HTML>
1 b0 G  I. A) N+ Z
方法二：( C* n( @1 `: a  x6 ^
5 W5 i8 @' Q" `% ?/ o7 p4 ]2 }
　　有一个软件叫HTMLEncrypt.exe，它就是把源代码进行加密的软件，这个软件的加密的原理是把字符转换成Unicode代码。下面的例子是一个分帧的页面：
* P! N3 w" V2 `  j1 E/ u- e  N
<html><head><script>1 U6 l0 O6 k6 t! f6 }
function Carbosoft( s ) { var sRet=""; for(j=0; j< s.length; j++ ){ var n= s.charCodeAt(j); if (n>=8364) {n = 128;} sRet += String.fromCharCode( n - 3 ); } return( sRet ); }
var sJsCmds ="" +
"?kwpoA?khdgA?phwd#kwws0htxly@%Frqwhqw0W|sh%#frqwhqw@%wh{w2kwpo>#fkduvhw@lvr0;;8<04%A?wlwohAZHOFRPH?2wlwohA?phwd#qdph@%JHQHUDWRU%#frqwhqw@%Plfurvriw#IurqwSdjh#613%A?phwd#qdph@%Plfurvriw#Wkhph%#frqwhqw@%qrqh/#ghidxow%A?phwd#qdph@%Plfurvriw#Erughu%#frqwhqw@%qrqh/#ghidxow%A?2khdgA?iudphvhw#erughu@%3%#iudpherughu@%3%#urzv@%-/93%A##?iudph#qdph@%pdlq%#vuf@%xs1kwp%#vfuroolqj@%dxwr%A##?iudph#qdph@%rqolqh%#vuf@%grzq1kwp%#vfuroolqj@%qr%#qruhvl}h#wdujhw@%beodqn%A##?qriudphvA##?erg|A##?sAWklv#sdjh#xvhv#iudphv/#exw#|rxu#eurzvhu#grhvq*w#vxssruw#wkhp1#?2sA##?2erg|A##?2qriudphvA?2iudphvhwA?2kwpoA?irqw#froru@%&33333%A?s#doljq@%fhqwhu%A?vpdooA?irqw#idfh@%Wdkrpd%AWklv#iloh#zdv#hqfu|swhg#xvlqj#dq#xquhjlvwhuhg#yhuvlrq#ri#?d#kuhi@%kwws=22fduer{1wkhgqv1qhw2kwpohqfu|sw1kwp%AKWPO#Hqfu|sw#y413?2dA1?2irqwA?2vpdooA?2sA" +
"";; w1 x0 y" ]* c( ~+ S: k4 r1 e
var s= Carbosoft( sJsCmds);
document.write (s);
</script>
</head><body></body></html>

　　从上面可以看出，浏览器解释这写代码前，进行了还原，从而可以得到破解的方法如下：

<script>3 o4 E; d4 u$ _/ ~; V5 X  }
function Carbosoft( s ) { var sRet=""; for(j=0; j< s.length; j++ ){ var n= s.charCodeAt(j); if (n>=8364) {n = 128;} sRet += String.fromCharCode( n - 3 ); } return( sRet ); }
var sJsCmds ="" +0 ^8 r+ g7 o" m
"?kwpoA?khdgA?phwd#kwws0htxly@%Frqwhqw0W|sh%#frqwhqw@%wh{w2kwpo>#fkduvhw@lvr0;;8<04%A?wlwohAZHOFRPH?2wlwohA?phwd#qdph@%JHQHUDWRU%#frqwhqw@%Plfurvriw#IurqwSdjh#613%A?phwd#qdph@%Plfurvriw#Wkhph%#frqwhqw@%qrqh/#ghidxow%A?phwd#qdph@%Plfurvriw#Erughu%#frqwhqw@%qrqh/#ghidxow%A?2khdgA?iudphvhw#erughu@%3%#iudpherughu@%3%#urzv@%-/93%A##?iudph#qdph@%pdlq%#vuf@%xs1kwp%#vfuroolqj@%dxwr%A##?iudph#qdph@%rqolqh%#vuf@%grzq1kwp%#vfuroolqj@%qr%#qruhvl}h#wdujhw@%beodqn%A##?qriudphvA##?erg|A##?sAWklv#sdjh#xvhv#iudphv/#exw#|rxu#eurzvhu#grhvq*w#vxssruw#wkhp1#?2sA##?2erg|A##?2qriudphvA?2iudphvhwA?2kwpoA?irqw#froru@%&33333%A?s#doljq@%fhqwhu%A?vpdooA?irqw#idfh@%Wdkrpd%AWklv#iloh#zdv#hqfu|swhg#xvlqj#dq#xquhjlvwhuhg#yhuvlrq#ri#?d#kuhi@%kwws=22fduer{1wkhgqv1qhw2kwpohqfu|sw1kwp%AKWPO#Hqfu|sw#y413?2dA1?2irqwA?2vpdooA?2sA" +
"";
var s= Carbosoft( sJsCmds);% e" I- Z  c" d0 w; w, m
</script>
<form name=qq>7 \" M5 h2 X3 ?/ G" j; x, p
<textarea name=ww cols=100 rows=10></textarea>
<input onclick='ww.value=s' type=button value="解密">1 x; q6 A" u3 r6 q5 r: U
</form>
- _4 c+ ^, S1 u* U5 x
0 b6 e0 Z% [! J2 _8 Z3 Z
方法三：

　　有一种加密方法是每行单独加密，还原起来比较复杂。看一个加密过的原文：
- c, V! `/ B7 {/ n) z2 ]4 P* v; ^/ x
<HTML>2 F; _, V! O! Q! a# S
<BODY>
<SCRIPT LANGUAGE="javascript">
function Decode() {
d("FrfmnD");d("FruyvDFgwhqjfWnyeseysuEXpydy%whqjf~J~XWghwEXfkjJpgXDFIgwhqjfD");d("FmufyWrffjKuieqdEX?klfulfK$ajuXWwklfulfEXfubfIrfmnGWwryhgufEsx}{~}XD");d("FfqfnuDejFIfqfnuD");d("FIruyvD");d("FxkvaD");d("FIxkvaD");d("FIrfmnD");d("W");return 0;}, r8 R( M2 [4 F2 b. A
</SCRIPT>5 c9 j* r, f& n0 \% c
<SCRIPT LANGUAGE="javascript">& u. j: {; O4 [; K2 B- ?, Q0 M
function d (enc) {document.write(codeIt(key,enc));}
var key = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!\"\ \|#$%&\'()*+,-.\/:;<=>?@[\\]^_\t\`{}~\n";function codeIt (mC, eS) {var wTG, mcH = mC.length / 2, nS = "", dv;for (var x = 0; x < eS.length; x++) { wTG = mC.indexOf(eS.charAt(x));if (wTG > mcH) {dv = wTG - mcH; nS = nS + mC.charAt(48 - dv);}else {dv = mcH - wTG;nS = nS + mC.charAt(48 + dv);}}return nS;}
</SCRIPT>  y* ]% t# P: G5 z9 v
<SCRIPT LANGUAGE="javascript">
Decode();+ F$ w7 g/ Z" O7 s
</SCRIPT>* ~3 m) i0 ?3 s8 G$ K
</BODY>" S  j' r" Z1 A9 K) M5 w. o
</HTML>
& d. C$ k, v: J# p
　　还原的时候，也必须每行单独解密，用下面的方法可以看到源代码：: ?# @* S7 n9 v  s4 \8 B0 `# g
" f, C8 p6 S; Z6 ~* H
<HTML>/ u/ [- A$ c/ m
<BODY>% D$ F/ x$ x. v/ A1 D( [$ ~# d& B0 S9 G
<SCRIPT LANGUAGE="javascript">
function Decode() {/ o6 S, c; V/ Y* u
d("FrfmnD");d("FruyvDFgwhqjfWnyeseysuEXpydy%whqjf~J~XWghwEXfkjJpgXDFIgwhqjfD");d("FmufyWrffjKuieqdEX?klfulfK$ajuXWwklfulfEXfubfIrfmnGWwryhgufEsx}{~}XD");d("FfqfnuDejFIfqfnuD");d("FIruyvD");d("FxkvaD");d("FIxkvaD");d("FIrfmnD");d("W");return 0;}8 P. O4 P5 c, D5 S2 V
</SCRIPT>& l8 d# m6 k  h( M) A" Z
<SCRIPT LANGUAGE="javascript">
function d (enc) {alert(codeIt(key,enc));}
var key = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!\"\ \|#$%&\'()*+,-.\/:;<=>?@[\\]^_\t\`{}~\n";function codeIt (mC, eS) {var wTG, mcH = mC.length / 2, nS = "", dv;for (var x = 0; x < eS.length; x++) { wTG = mC.indexOf(eS.charAt(x));if (wTG > mcH) {dv = wTG - mcH; nS = nS + mC.charAt(48 - dv);}else {dv = mcH - wTG;nS = nS + mC.charAt(48 + dv);}}return nS;}& A, l  O, i9 B2 T2 [. ^
</SCRIPT>. g( h& Z* m+ o& N
<SCRIPT LANGUAGE="javascript">
Decode();
</SCRIPT>
</BODY>
</HTML>% Z* ?3 T8 ~+ y  d2 o

　　哈哈！！:=)是不是很精彩！！

欢迎光临捌玖网络工作室 (http://www.89w.org/)