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<div align="center"><span class="p"><b><font color="#FF3333" class="p11">第十课
crack常见技巧</font></b></span></div>
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<div align="left"><span class="p9"><span class="p9">1、<span class="p9"><a href="lesson1401.htm" tppabs="http://toye.dihou.org/lesson1401.htm"><span class="p9"><span class="p9">一些常用方法</span></span></a></span></span></span></div>
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<div align="left"><span class="p9"><span class="p9">5、<a href="lesson1406.htm" tppabs="http://toye.dihou.org/lesson1406.htm">Key
File保护</a></span></span></div>
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<div align="left"><span class="p9"><span class="p9">2、<span class="p9"><span class="p9"><a href="lesson1402.htm" tppabs="http://toye.dihou.org/lesson1402.htm">序列号方式</a></span></span></span></span></div>
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<td width="50%" valign="top" class="p9" height="20"><span class="p9"><span class="p9">6、<span class="p9"><span class="p9"><font color="#FF3333">功能限制的程序</font></span></span><font color="#FF3333"> </font></span></span></td>
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<div align="left"><span class="p9"><span class="p9">3、<a href="lesson1403.htm" tppabs="http://toye.dihou.org/lesson1403.htm">NAG方式（警告窗口）</a></span></span></div>
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<td width="50%" valign="top" class="p9" height="20"><span class="p9"><span class="p9">7、<span class="p9"><span class="p9"><span class="p9"><span class="p9"><span class="p9"><a href="lesson1408.htm" tppabs="http://toye.dihou.org/lesson1408.htm">InstallSHIELD
Setups </a></span> </span> </span></span> </span></span></span></td>
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<div align="left"><span class="p9"><span class="p9">4、<a href="lesson1404.htm" tppabs="http://toye.dihou.org/lesson1404.htm">运行时间限制</a></span></span></div>
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<td width="50%" valign="top" class="p9" height="20">8、<a href="lesson1410.htm" tppabs="http://toye.dihou.org/lesson1410.htm">CD-check</a></td>
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<p align="center" class="p9"><span class="p9"><span class="p9">6、<a href="lesson1407.htm" tppabs="http://toye.dihou.org/lesson1407.htm"><span class="p9"><span class="p9">功能限制的程序</span></span></a></span></span>
<font color="#FF3333">【习题】 </font></p>
<p align="left" class="p9"><b>1、习题一</b> <a href="javascript:if(confirm('http://toye.dihou.org/lesson1407-ex-01%20.zip \n\n这个文件不能通过 Teleport Pro 取回, 因为 没有遇到方案的文件类型说明. \n\n你想从服务器打开它吗?'))window.location='http://toye.dihou.org/lesson1407-ex-01%20.zip'" tppabs="http://toye.dihou.org/lesson1407-ex-01%20.zip">lesson1407-ex-01</a>
菜单选项呈灰色 大小：163K 易</p>
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1、习题一 答案</a> </span></div>
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<p class="p9">这个程序是利用函数EnableMenuItem来使菜单变灰的，用W32DASM打开程序，查找EnableMenuItem，你会发现这部分是重点：
<br>
| <br>
:004329E4 8B7E58
mov edi, dword ptr [esi+58] <br>
:004329E7 85FF
test edi, edi <br>
:004329E9 7427
je 00432A12<---如是零则跳过 EnableMenuItem <br>
:004329EB F6462002
test [esi+20], 02 <br>
:004329EF 7521
jne 00432A12 <br>
:004329F1 33C0
xor eax, eax <br>
:004329F3 8AC3
mov al, bl <br>
:004329F5 8B0485D4374400 mov eax,
dword ptr [4*eax+004437D4] <br>
:004329FC 83C800
or eax, 00000000 <br>
:004329FF 50
push eax <br>
:00432A00 0FB74644
movzx eax, word ptr [esi+44] <br>
:00432A04 50
push eax <br>
:00432A05 8BC7
mov eax, edi <br>
:00432A07 E824F4FFFF
call 00431E30 <br>
:00432A0C 50
push eax <br>
<br>
* Reference To: user32.EnableMenuItem, Ord:0000h <br>
| <br>
:00432A0D E89A36FDFF
Call 004060AC <br>
<br>
* Referenced by a (U)nconditional or (C)onditional Jump at Addresses:
<br>
|:004329E9(C), :004329EF(C) <br>
| <br>
:00432A12 33D2
xor edx, edx <br>
:00432A14 8BC6
mov eax, esi <br>
:00432A16 8B08
mov ecx, dword ptr [eax] <br>
:00432A18 FF5134
call [ecx+34] <br>
<br>
<br>
这有很多办法可使其跳转，但在这里选用另一法，你在SOFTICE下跟踪会发现在:004329E7 一行，EBX是0,因此将： <br>
004329E7 85FF test edi, edi <br>
改成： test
ebx, edi <br>
菜单功能恢复正常。
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