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<p><a href="../catalog.htm">目录</a>＞＞第6章</p>
<p align="center" class="shadow1Copy"><b class="p3">第6章 软件保护技术</b></p>
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<div align="center"><a href="Chap6-1.htm"><font color="#FFFFFF">第一节 常见保护技巧</font></a></div>
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<div align="center"><a href="Chap6-2.htm"><font color="#FFFFFF">第二节 反跟踪技术</font></a></div>
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<div align="center"><a href="Chap6-3.htm"><font color="#FFFFFF">第三节 加密算法</font></a></div>
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<div align="center"><a href="Chap6-4.htm"><font color="#FFFFFF">第四节 软件保护建议</font></a></div>
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<p align="center"><span class="p9"><b>第一节 常见保护技巧</b></span></p>
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<div align="center" class="p"><span class="p9"><span class="p9">1、<a href="Chap6-1-1.htm">序列号方式</a> </span></span></div>
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<div align="center">2、<a href="Chap6-1-2.htm">警告（NAG）窗口</a></div>
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<td width="34%" valign="top" class="p9" height="23">
<div align="center"><span class="p9">3、<a href="Chap6-1-3.htm">时间限制</a></span></div>
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<div align="center">4、<a href="Chap6-1-4.htm">Key File保护</a></div>
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<td width="33%" valign="middle" align="center" class="p9" height="23">
<div align="center">5、<a href="Chap6-1-5.htm">功能限制的程序</a> </div>
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<td width="34%" valign="top" class="p9" height="23">
<div align="center">6、<a href="Chap6-1-6.htm">CD-check</a></div>
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<p align="center"><span class="p9"><span class="p9"><b>1、<a href="Chap6-1-1.htm">序列号方式</a>
</b> <b><font color="#FF0000">【习题】</font></b></span></span></p>
<p align="left" class="p9"><b>1、习题一</b> <a href="Exercise/section01/chap6-1-1-01.zip">chap6-1-1-01</a>
2K Serial 中</p>
<p align="left" class="p9"><b>2、习题二</b> <a href="Exercise/section01/chap6-1-1-02.zip">chap6-1-1-02</a>
2K code 稍难</p>
<p align="left" class="p9"><b>3、习题三</b> <a href="Exercise/section01/chap6-1-1-03.zip">chap6-1-1-03</a>
16K Serial ( 需要<a href="Exercise/cw3220.zip">cw3220.dll</a> ) 中</p>
<p align="left" class="p9"><b>4、习题四 </b><a href="Exercise/section01/chap6-1-1-04.zip">chap6-1-1-04</a>
5K Name/Serial 中</p>
<p align="left" class="p9"><b>5、习题五 </b><a href="Exercise/section01/chap6-1-1-05.zip">chap6-1-1-05</a>
103K Name/Serial 中</p>
<p align="left" class="p9"><b>6、习题六 </b><a href="Exercise/section01/chap6-1-1-06.zip">chap6-1-1-06</a>
91K code 中</p>
<p align="left" class="p9"><b>7、习题七 </b><a href="Exercise/section01/chap6-1-1-07.zip">chap6-1-1-07</a>
26K Name/Group/Serial</p>
<p align="left" class="p9"><b>8、习题八 </b><a href="Exercise/section01/chap6-1-1-08.zip">chap6-1-1-08</a>
5K Name/Serial 中</p>
<p align="left" class="p9"><b>9、习题九 </b><a href="Exercise/section01/chap6-1-1-09.zip">chap6-1-1-09</a>
119K Name/Serial 中</p>
<p align="left" class="p9"><b>10、习题十 </b><a href="Exercise/section01/chap6-1-1-10.zip">chap6-1-1-10</a>
34K Name/Group/Serial 最难</p>
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1、习题一 答案</a></div>
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<p class="p9" align="left">破解chap6-1-1-01<br>
<br>
* Referenced by a CALL at Address: <br>
|:004010B0 <br>
| <br>
:004010C9 56
push esi <br>
:004010CA 57
push edi <br>
:004010CB 51
push ecx <br>
:004010CC 33F6
xor esi, esi <br>
:004010CE 33FF
xor edi, edi <br>
:004010D0 B908000000
mov ecx, 00000008 ---定义循环次数 <br>
:004010D5 BE44304000
mov esi, 00403044 ---调出输入的密码 <br>
:004010DA 803632
xor byte ptr [esi], 32 ---把密码个字节与32取异或 <br>
:004010DD 46
inc esi <br>
:004010DE E2FA
loop 004010DA
---向上循环 <br>
:004010E0 BE44304000
mov esi, 00403044 <br>
:004010E5 B904000000
mov ecx, 00000004 ---8变4 <br>
:004010EA 8A06
mov al, byte ptr [esi] <br>
:004010EC 8A5E01
mov bl, byte ptr [esi+01] <br>
:004010EF 32C3
xor al, bl
---把变化后的密码前后取异或 <br>
:004010F1 88874C304000 mov
byte ptr [edi+0040304C], al <br>
:004010F7 83C602
add esi, 00000002 <br>
:004010FA 47
inc edi <br>
:004010FB E2ED
loop 004010EA
---向上循环 <br>
:004010FD BE4C304000
mov esi, 0040304C ---将生成的4个数变成2个 <br>
:00401102 8A06
mov al, byte ptr [esi] <br>
:00401104 8A5E01
mov bl, byte ptr [esi+01] <br>
:00401107 32C3
xor al, bl <br>
:00401109 8A5E02
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