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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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<td width="33%" valign="middle" align="center" class="p9" height="23">
<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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<td width="33%" valign="middle" align="center" class="p9" height="23">
<div align="center">2、<a href="Chap6-1-2.htm">警告（NAG）窗口</a></div>
</td>
<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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<td width="33%" valign="middle" align="center" class="p9" height="23">
<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>6、<a href="Chap6-1-6.htm">CD-check</a>
</b> <font color="#FF3366">【习题】</font></span></span></p>
<p><br>
</p>
<p align="left" class="p9"><b><span class="p9">1、习题一</span></b><span class="p9">
<a href="Exercise/section06/chap6-1-6-01.zip">chap6-1-6-01</a> 15K ( 需要<a href="Exercise/cw3220.zip">cw3220.dll</a>
) 易</span></p>
<p align="left" class="p9"><b><span class="p9">2、习题二</span></b><span class="p9">
<a href="Exercise/section06/chap6-1-6-02.zip">chap6-1-6-02</a> 5K 易</span></p>
<p align="left" class="p9"><b><span class="p9">3、习题三</span></b><span class="p9">
<a href="Exercise/section06/chap6-1-6-03.zip">chap6-1-6-03</a> 6K ( 需要<a href="Exercise/cw3220.zip">cw3220.dll</a>
) 中</span></p>
<p align="left" class="p9"><b><span class="p9">4、习题四</span></b><span class="p9">
<a href="Exercise/section06/chap6-1-6-04.zip">chap6-1-6-04</a> 4K 中</span></p>
<p align="left" class="p9">
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<div id="KB1Parent" class="parent"> <span class="p9"><a href="#" onClick="expandIt('KB1'); return false">
1、习题一 答案</a> </span></div>
<div id="KB1Child" class="child"> <span class="p9"> </span>
<table width="100%" align="center" cellspacing="0">
<tr bgcolor="#EFEFEF">
<td height="7" class="p9">用W32DASM装载程序，反汇编，在串式数据参考查找"This program isn't
being run from "，如下： <br>
<br>
* Reference To: KERNEL32.GetDriveTypeA, Ord:0000h <br>
| <br>
:00401087 E884040000 Call
00401510 <br>
:0040108C 8BC8
mov ecx, eax <br>
:0040108E BBAE3E0F00 mov
ebx, 000F3EAE <br>
:00401093 90
nop <br>
:00401094 40
inc eax <br>
:00401095 42
inc edx <br>
:00401096 47
inc edi <br>
:00401097 90
nop <br>
:00401098 48
dec eax <br>
:00401099 4A
dec edx <br>
:0040109A 4F
dec edi <br>
:0040109B 90
nop <br>
:0040109C 3BD9
cmp ebx, ecx <br>
:0040109E 7525
jne 004010C5<----如没CD则跳走出错 <br>
:004010A0 6800100000 push
00001000 <br>
<br>
* Possible StringData Ref from Data Obj ->"Well Done" <br>
| <br>
:004010A5 6898204000 push
00402098 <br>
<br>
* Possible StringData Ref from Data Obj ->"This program is being run from
" <br>
->"a CD" <br>
| <br>
:004010AA 6874204000 push
00402074 <br>
:004010AF 6A00
push 00000000 <br>
<br>
* Reference To: USER32.MessageBoxA, Ord:0000h <br>
| <br>
:004010B1 E86C040000 Call
00401522 <br>
<br>
* Possible StringData Ref from Data Obj ->"Correct CD In Drive" <br>
| <br>
:004010B6 68A2204000 push
004020A2 <br>
<br>
* Possible Reference to Dialog: DialogID_0001, CONTROL_ID:0065, "" <br>
| <br>
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