首页 > 代码库 > [反汇编练习] 160个CrackMe之014
[反汇编练习] 160个CrackMe之014
[反汇编练习] 160个CrackMe之014.
本系列文章的目的是从一个没有任何经验的新手的角度(其实就是我自己)，一步步尝试将160个CrackMe全部破解，如果可以，通过任何方式写出一个类似于注册机的东西。
其中，文章中按照如下逻辑编排（解决如下问题）：
1、使用什么环境和工具
2、程序分析
3、思路分析和破解流程
4、注册机的探索
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提醒各位看客: 如果文章中的逻辑看不明白,那你一定是没有亲手操刀!OD中的跳转提示很强大,只要你跟踪了,不用怎么看代码就理解了!
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1、工具和环境：
WinXP SP3 + 52Pojie六周年纪念版OD + PEID + 汇编金手指。
160个CrackMe的打包文件。
下载地址： http://pan.baidu.com/s/1xUWOY 密码: jbnq
注：
1、Win7系统对于模块和程序开启了随机初始地址的功能，会给分析带来很大的负担，所以不建议使用Win7进行分析。
2、以上工具都是在52PoJie论坛下的原版程序，NOD32不报毒，个人承诺绝对不会进行任何和木马病毒相关内容。
2、程序分析：
想要破解一个程序，必须先了解这个程序。所以，在破解过程中，对最初程序的分析很重要，他可以帮助我们理解作者的目的和意图，特别是对于注册码的处理细节，从而方便我们反向跟踪和推导。
和上一节一样，打开CHM，选择第14个bjanes.exe，保存下来。运行程序，程序界面如下：
和之前的很多程序一样，有错误对话框。
使用PEID查看：VB 5.0 – 6.0
3、思路分析和破解流程
由于没壳，还有信息框，所以我们直接使用OD暂停，查看堆栈就可以跟踪到了。具体步骤：
1、打开OD，将exe拖入OD中，F9运行。
2、在Exe中输入伪码123456，点击Check it，信息框提示try again!
3、回到OD，点击暂停按钮（Ctrl+F2）,然后点击K图标（Ctrl+K），可以看到此时的堆栈信息
选中最后一个rtcMsgBox，右键->Show Call，返回到了反汇编窗口。
4、从Call xxxrtcMsgBox的位置开始，在附近浏览代码，发现很明显有提示正确和失败的文本。
00403A1D .^ E9 5AFDFFFF jmp 0040377C00403A22 > 33DB xor ebx,ebx00403A24 > 8B35 A4104000 mov esi,dword ptr ds:[<&MSVBVM60.__vbaVa>; msvbvm60.__vbaVarDup00403A2A . B9 04000280 mov ecx,0x8002000400403A2F . 894D 98 mov dword ptr ss:[ebp-0x68],ecx00403A32 . B8 0A000000 mov eax,0xA00403A37 . 894D A8 mov dword ptr ss:[ebp-0x58],ecx00403A3A . BF 08000000 mov edi,0x800403A3F . 8D95 50FFFFFF lea edx,dword ptr ss:[ebp-0xB0]00403A45 . 8D4D B0 lea ecx,dword ptr ss:[ebp-0x50]00403A48 . 8945 90 mov dword ptr ss:[ebp-0x70],eax00403A4B . 8945 A0 mov dword ptr ss:[ebp-0x60],eax00403A4E . C785 58FFFFFF F0>mov dword ptr ss:[ebp-0xA8],004022F0 ; UNICODE "Wrong serial!"00403A58 . 89BD 50FFFFFF mov dword ptr ss:[ebp-0xB0],edi00403A5E . FFD6 call esi ; <&MSVBVM60.__vbaVarDup>00403A60 . 8D95 60FFFFFF lea edx,dword ptr ss:[ebp-0xA0]00403A66 . 8D4D C0 lea ecx,dword ptr ss:[ebp-0x40]00403A69 . C785 68FFFFFF C8>mov dword ptr ss:[ebp-0x98],004022C8 ; UNICODE "Sorry, try again!"00403A73 . 89BD 60FFFFFF mov dword ptr ss:[ebp-0xA0],edi00403A79 . FFD6 call esi00403A7B . 8D45 90 lea eax,dword ptr ss:[ebp-0x70]00403A7E . 8D4D A0 lea ecx,dword ptr ss:[ebp-0x60]00403A81 . 50 push eax00403A82 . 8D55 B0 lea edx,dword ptr ss:[ebp-0x50]00403A85 . 51 push ecx00403A86 . 52 push edx00403A87 . 8D45 C0 lea eax,dword ptr ss:[ebp-0x40]00403A8A . 53 push ebx00403A8B . 50 push eax00403A8C . FF15 30104000 call dword ptr ds:[<&MSVBVM60.#595>] ; msvbvm60.rtcMsgBox00403A92 . 8D4D 90 lea ecx,dword ptr ss:[ebp-0x70]00403A95 . 8D55 A0 lea edx,dword ptr ss:[ebp-0x60]00403A98 . 51 push ecx00403A99 . 8D45 B0 lea eax,dword ptr ss:[ebp-0x50]00403A9C . 52 push edx00403A9D . 8D4D C0 lea ecx,dword ptr ss:[ebp-0x40]00403AA0 . 50 push eax00403AA1 . 51 push ecx00403AA2 . EB 7E jmp short 00403B2200403AA4 > 8B35 A4104000 mov esi,dword ptr ds:[<&MSVBVM60.__vbaVa>; msvbvm60.__vbaVarDup00403AAA . B9 04000280 mov ecx,0x8002000400403AAF . 894D 98 mov dword ptr ss:[ebp-0x68],ecx00403AB2 . B8 0A000000 mov eax,0xA00403AB7 . 894D A8 mov dword ptr ss:[ebp-0x58],ecx00403ABA . BF 08000000 mov edi,0x800403ABF . 8D95 50FFFFFF lea edx,dword ptr ss:[ebp-0xB0]00403AC5 . 8D4D B0 lea ecx,dword ptr ss:[ebp-0x50]00403AC8 . 8945 90 mov dword ptr ss:[ebp-0x70],eax00403ACB . 8945 A0 mov dword ptr ss:[ebp-0x60],eax00403ACE . C785 58FFFFFF A4>mov dword ptr ss:[ebp-0xA8],004022A4 ; UNICODE "Correct serial!"00403AD8 . 89BD 50FFFFFF mov dword ptr ss:[ebp-0xB0],edi00403ADE . FFD6 call esi ; <&MSVBVM60.__vbaVarDup>00403AE0 . 8D95 60FFFFFF lea edx,dword ptr ss:[ebp-0xA0]00403AE6 . 8D4D C0 lea ecx,dword ptr ss:[ebp-0x40]00403AE9 . C785 68FFFFFF 58>mov dword ptr ss:[ebp-0x98],00402258 ; UNICODE "Good job, tell me how you do that!"00403AF3 . 89BD 60FFFFFF mov dword ptr ss:[ebp-0xA0],edi00403AF9 . FFD6 call esi00403AFB . 8D55 90 lea edx,dword ptr ss:[ebp-0x70]00403AFE . 8D45 A0 lea eax,dword ptr ss:[ebp-0x60]00403B01 . 52 push edx00403B02 . 8D4D B0 lea ecx,dword ptr ss:[ebp-0x50]00403B05 . 50 push eax00403B06 . 51 push ecx00403B07 . 8D55 C0 lea edx,dword ptr ss:[ebp-0x40]00403B0A . 53 push ebx00403B0B . 52 push edx00403B0C . FF15 30104000 call dword ptr ds:[<&MSVBVM60.#595>] ; msvbvm60.rtcMsgBox
5、从这段代码开始，继续向上寻找，发现je/jg/jmp等跳转时选中这一行，查看跳转的位置，分析一下大概流程：
00403787 0F8F 17030000 jg 00403AA4 ; // 这个直接跳到正确，关键跳转0040378D . 8B17 mov edx,dword ptr ds:[edi]0040378F . 57 push edi00403790 . FF92 08030000 call dword ptr ds:[edx+0x308]00403796 . 50 push eax00403797 . 8D45 D4 lea eax,dword ptr ss:[ebp-0x2C]0040379A . 50 push eax0040379B . FF15 2C104000 call dword ptr ds:[<&MSVBVM60.__vbaObjSe>; msvbvm60.__vbaObjSet004037A1 . 8BD8 mov ebx,eax004037A3 . 8D55 E4 lea edx,dword ptr ss:[ebp-0x1C]004037A6 . 52 push edx004037A7 . 53 push ebx004037A8 . 8B0B mov ecx,dword ptr ds:[ebx]004037AA . FF91 A0000000 call dword ptr ds:[ecx+0xA0]004037B0 . 85C0 test eax,eax004037B2 . DBE2 fclex004037B4 . 7D 12 jge short 004037C8 ; // 不是004037B6 . 68 A0000000 push 0xA0004037BB . 68 44224000 push 00402244004037C0 . 53 push ebx004037C1 . 50 push eax004037C2 . FF15 24104000 call dword ptr ds:[<&MSVBVM60.__vbaHresu>; msvbvm60.__vbaHresultCheckObj004037C8 > 8B07 mov eax,dword ptr ds:[edi]004037CA . 57 push edi004037CB . FF90 08030000 call dword ptr ds:[eax+0x308]004037D1 . 8D4D D0 lea ecx,dword ptr ss:[ebp-0x30]004037D4 . 50 push eax004037D5 . 51 push ecx004037D6 . FF15 2C104000 call dword ptr ds:[<&MSVBVM60.__vbaObjSe>; msvbvm60.__vbaObjSet004037DC . 8BF8 mov edi,eax004037DE . 8D45 DC lea eax,dword ptr ss:[ebp-0x24]004037E1 . 50 push eax004037E2 . 57 push edi004037E3 . 8B17 mov edx,dword ptr ds:[edi]004037E5 . FF92 A0000000 call dword ptr ds:[edx+0xA0]004037EB . 85C0 test eax,eax004037ED . DBE2 fclex004037EF . 7D 12 jge short 00403803 ; // 不是004037F1 . 68 A0000000 push 0xA0004037F6 . 68 44224000 push 00402244004037FB . 57 push edi004037FC . 50 push eax004037FD . FF15 24104000 call dword ptr ds:[<&MSVBVM60.__vbaHresu>; msvbvm60.__vbaHresultCheckObj00403803 > 0FBF7D E8 movsx edi,word ptr ss:[ebp-0x18]00403807 . 8B55 DC mov edx,dword ptr ss:[ebp-0x24]0040380A . B9 01000000 mov ecx,0x10040380F . 894D C8 mov dword ptr ss:[ebp-0x38],ecx00403812 . 894D B8 mov dword ptr ss:[ebp-0x48],ecx00403815 . 8D4D B0 lea ecx,dword ptr ss:[ebp-0x50]00403818 . B8 02000000 mov eax,0x20040381D . 51 push ecx0040381E . 57 push edi0040381F . 52 push edx00403820 . 8945 C0 mov dword ptr ss:[ebp-0x40],eax00403823 . 8945 B0 mov dword ptr ss:[ebp-0x50],eax00403826 . FF15 44104000 call dword ptr ds:[<&MSVBVM60.#631>] ; msvbvm60.rtcMidCharBstr0040382C . 8BD0 mov edx,eax0040382E . 8D4D D8 lea ecx,dword ptr ss:[ebp-0x28]00403831 . FFD6 call esi00403833 . 50 push eax00403834 . FF15 1C104000 call dword ptr ds:[<&MSVBVM60.#516>] ; msvbvm60.rtcAnsiValueBstr0040383A . 8B4D E4 mov ecx,dword ptr ss:[ebp-0x1C]0040383D . 33DB xor ebx,ebx0040383F . 66:3D 3900 cmp ax,0x3900403843 . 8D45 C0 lea eax,dword ptr ss:[ebp-0x40]00403846 . 50 push eax00403847 . 57 push edi00403848 . 0F9FC3 setg bl0040384B . 51 push ecx0040384C . F7DB neg ebx0040384E . FF15 44104000 call dword ptr ds:[<&MSVBVM60.#631>] ; msvbvm60.rtcMidCharBstr00403854 . 8BD0 mov edx,eax00403856 . 8D4D E0 lea ecx,dword ptr ss:[ebp-0x20]00403859 . FFD6 call esi0040385B . 50 push eax0040385C . FF15 1C104000 call dword ptr ds:[<&MSVBVM60.#516>] ; msvbvm60.rtcAnsiValueBstr00403862 . 33D2 xor edx,edx00403864 . 66:3D 3000 cmp ax,0x3000403868 . 0F9CC2 setl dl0040386B . F7DA neg edx0040386D . 8D45 D8 lea eax,dword ptr ss:[ebp-0x28]00403870 . 23DA and ebx,edx00403872 . 8D4D DC lea ecx,dword ptr ss:[ebp-0x24]00403875 . 50 push eax00403876 . 8D55 E0 lea edx,dword ptr ss:[ebp-0x20]00403879 . 51 push ecx0040387A . 8D45 E4 lea eax,dword ptr ss:[ebp-0x1C]0040387D . 52 push edx0040387E . 50 push eax0040387F . 6A 04 push 0x400403881 . FF15 90104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeS>; msvbvm60.__vbaFreeStrList00403887 . 8D4D D0 lea ecx,dword ptr ss:[ebp-0x30]0040388A . 8D55 D4 lea edx,dword ptr ss:[ebp-0x2C]0040388D . 51 push ecx0040388E . 52 push edx0040388F . 6A 02 push 0x200403891 . FF15 18104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeO>; msvbvm60.__vbaFreeObjList00403897 . 8D45 B0 lea eax,dword ptr ss:[ebp-0x50]0040389A . 8D4D C0 lea ecx,dword ptr ss:[ebp-0x40]0040389D . 50 push eax0040389E . 51 push ecx0040389F . 6A 02 push 0x2004038A1 . FF15 0C104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeV>; msvbvm60.__vbaFreeVarList004038A7 . 83C4 2C add esp,0x2C004038AA . 66:85DB test bx,bx004038AD . 0F85 6F010000 jnz 00403A22 ; // 不是004038B3 . 8B45 08 mov eax,dword ptr ss:[ebp+0x8]004038B6 . 50 push eax004038B7 . 8B10 mov edx,dword ptr ds:[eax]004038B9 . FF92 08030000 call dword ptr ds:[edx+0x308]004038BF . 50 push eax004038C0 . 8D45 D4 lea eax,dword ptr ss:[ebp-0x2C]004038C3 . 50 push eax004038C4 . FF15 2C104000 call dword ptr ds:[<&MSVBVM60.__vbaObjSe>; msvbvm60.__vbaObjSet004038CA . 8BD8 mov ebx,eax004038CC . 8D55 E4 lea edx,dword ptr ss:[ebp-0x1C]004038CF . 52 push edx004038D0 . 53 push ebx004038D1 . 8B0B mov ecx,dword ptr ds:[ebx]004038D3 . FF91 A0000000 call dword ptr ds:[ecx+0xA0]004038D9 . 85C0 test eax,eax004038DB . DBE2 fclex004038DD . 7D 12 jge short 004038F1 ; // 选中5，不是004038DF . 68 A0000000 push 0xA0004038E4 . 68 44224000 push 00402244004038E9 . 53 push ebx004038EA . 50 push eax004038EB . FF15 24104000 call dword ptr ds:[<&MSVBVM60.__vbaHresu>; msvbvm60.__vbaHresultCheckObj004038F1 > 66:8B45 E8 mov ax,word ptr ss:[ebp-0x18]004038F5 . 8B1D 74104000 mov ebx,dword ptr ds:[<&MSVBVM60.#536>] ; msvbvm60.rtcStrFromVar004038FB . 66:35 0200 xor ax,0x2004038FF . 8D4D A0 lea ecx,dword ptr ss:[ebp-0x60]00403902 . 0F80 A4020000 jo 00403BAC ; // 选中4，不是00403908 . 51 push ecx00403909 . 66:8945 A8 mov word ptr ss:[ebp-0x58],ax0040390D . C745 A0 02000000 mov dword ptr ss:[ebp-0x60],0x200403914 . FFD3 call ebx ; <&MSVBVM60.#536>00403916 . 8BD0 mov edx,eax00403918 . 8D4D D8 lea ecx,dword ptr ss:[ebp-0x28]0040391B . FFD6 call esi0040391D . 8B45 E4 mov eax,dword ptr ss:[ebp-0x1C]00403920 . 8D55 C0 lea edx,dword ptr ss:[ebp-0x40]00403923 . 52 push edx00403924 . 57 push edi00403925 . 50 push eax00403926 . C745 C8 01000000 mov dword ptr ss:[ebp-0x38],0x10040392D . C745 C0 02000000 mov dword ptr ss:[ebp-0x40],0x200403934 . FF15 44104000 call dword ptr ds:[<&MSVBVM60.#631>] ; msvbvm60.rtcMidCharBstr0040393A . 8BD0 mov edx,eax0040393C . 8D4D E0 lea ecx,dword ptr ss:[ebp-0x20]0040393F . FFD6 call esi00403941 . 50 push eax00403942 . FF15 1C104000 call dword ptr ds:[<&MSVBVM60.#516>] ; msvbvm60.rtcAnsiValueBstr00403948 . 8D4D B0 lea ecx,dword ptr ss:[ebp-0x50]0040394B . 66:8945 B8 mov word ptr ss:[ebp-0x48],ax0040394F . 51 push ecx00403950 . C745 B0 02000000 mov dword ptr ss:[ebp-0x50],0x200403957 . FFD3 call ebx00403959 . 8BD0 mov edx,eax0040395B . 8D4D DC lea ecx,dword ptr ss:[ebp-0x24]0040395E . FFD6 call esi00403960 . 50 push eax00403961 . FF15 84104000 call dword ptr ds:[<&MSVBVM60.__vbaR8Str>; msvbvm60.__vbaR8Str00403967 . DC25 D8104000 fsub qword ptr ds:[0x4010D8]0040396D . 8D55 90 lea edx,dword ptr ss:[ebp-0x70]00403970 . 6A 01 push 0x100403972 . 52 push edx00403973 . C785 30FFFFFF 05>mov dword ptr ss:[ebp-0xD0],0x80050040397D . DD9D 38FFFFFF fstp qword ptr ss:[ebp-0xC8]00403983 . DFE0 fstsw ax00403985 . A8 0D test al,0xD00403987 . 0F85 1A020000 jnz 00403BA7 ; // 选中3，查看，也不是0040398D . 8B45 D8 mov eax,dword ptr ss:[ebp-0x28]00403990 . C745 D8 00000000 mov dword ptr ss:[ebp-0x28],0x000403997 . 8945 98 mov dword ptr ss:[ebp-0x68],eax0040399A . 8D45 80 lea eax,dword ptr ss:[ebp-0x80]0040399D . 50 push eax0040399E . C745 90 08000000 mov dword ptr ss:[ebp-0x70],0x8004039A5 . FF15 B0104000 call dword ptr ds:[<&MSVBVM60.#619>] ; msvbvm60.rtcRightCharVar004039AB . 8D8D 30FFFFFF lea ecx,dword ptr ss:[ebp-0xD0]004039B1 . 8D55 80 lea edx,dword ptr ss:[ebp-0x80]004039B4 . 51 push ecx004039B5 . 52 push edx004039B6 . FF15 A0104000 call dword ptr ds:[<&MSVBVM60.__vbaVarTs>; msvbvm60.__vbaVarTstNe004039BC . 8BF8 mov edi,eax004039BE . 8D45 D8 lea eax,dword ptr ss:[ebp-0x28]004039C1 . 8D4D DC lea ecx,dword ptr ss:[ebp-0x24]004039C4 . 50 push eax004039C5 . 8D55 E0 lea edx,dword ptr ss:[ebp-0x20]004039C8 . 51 push ecx004039C9 . 8D45 E4 lea eax,dword ptr ss:[ebp-0x1C]004039CC . 52 push edx004039CD . 50 push eax004039CE . 6A 04 push 0x4004039D0 . FF15 90104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeS>; msvbvm60.__vbaFreeStrList004039D6 . 83C4 14 add esp,0x14004039D9 . 8D4D D4 lea ecx,dword ptr ss:[ebp-0x2C]004039DC . FF15 C4104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeO>; msvbvm60.__vbaFreeObj004039E2 . 8D4D 80 lea ecx,dword ptr ss:[ebp-0x80]004039E5 . 8D55 90 lea edx,dword ptr ss:[ebp-0x70]004039E8 . 51 push ecx004039E9 . 8D45 A0 lea eax,dword ptr ss:[ebp-0x60]004039EC . 52 push edx004039ED . 8D4D B0 lea ecx,dword ptr ss:[ebp-0x50]004039F0 . 50 push eax004039F1 . 8D55 C0 lea edx,dword ptr ss:[ebp-0x40]004039F4 . 51 push ecx004039F5 . 52 push edx004039F6 . 6A 05 push 0x5004039F8 . FF15 0C104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeV>; msvbvm60.__vbaFreeVarList004039FE . 83C4 18 add esp,0x1800403A01 . 66:85FF test di,di00403A04 . 75 1C jnz short 00403A22 ; // 选中2，不是00403A06 . 8B7D 08 mov edi,dword ptr ss:[ebp+0x8]00403A09 . B8 01000000 mov eax,0x100403A0E . 66:0345 E8 add ax,word ptr ss:[ebp-0x18]00403A12 . 0F80 94010000 jo 00403BAC ; // 选中1，查看跳转，不是00403A18 . 8945 E8 mov dword ptr ss:[ebp-0x18],eax00403A1B . 33DB xor ebx,ebx00403A1D .^ E9 5AFDFFFF jmp 0040377C
到这段代码最上的位置时，发现回调到正确文本的位置，所以我么可以很肯定，这个跳转时关键跳转，改为jmp强制跳转就可以了。我们试试，选中这一行->空格键->将jg 00403AA4改为jmp 00403AA4,记得左下角的Nop填充打钩。然后回到程序，再次点击check it,发现仍然提示失败！
5、继续向上看：
004036D3 . FF15 24104000 call dword ptr ds:[<&MSVBVM60.__vbaHresu>; msvbvm60.__vbaHresultCheckObj004036D9 > 8B45 E4 mov eax,dword ptr ss:[ebp-0x1C]004036DC . 50 push eax ; // eax="123123"004036DD . FF15 08104000 call dword ptr ds:[<&MSVBVM60.__vbaLenBs>; msvbvm60.__vbaLenBstr004036E3 . 33C9 xor ecx,ecx004036E5 . 83F8 09 cmp eax,0x9 ; // 比较字符串长度与0x9，否则直接失败004036E8 . 0F95C1 setne cl ; // cl=1004036EB . F7D9 neg ecx ; // 取补，-1004036ED . 8BF1 mov esi,ecx004036EF . 8D4D E4 lea ecx,dword ptr ss:[ebp-0x1C]004036F2 . FF15 C0104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeS>; msvbvm60.__vbaFreeStr004036F8 . 8D4D D4 lea ecx,dword ptr ss:[ebp-0x2C]004036FB . FF15 C4104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeO>; msvbvm60.__vbaFreeObj00403701 . 66:3BF3 cmp si,bx00403704 0F85 1A030000 jnz 00403A24 ; // 这个会直接跳到失败0040370A . 8B17 mov edx,dword ptr ds:[edi]0040370C . 57 push edi0040370D . FF92 08030000 call dword ptr ds:[edx+0x308]
到这里发现它使用cmp比较和jnz进行字符串长度判断，如果不等于9则直接跳转到失败！所以，文本的长度必须为9。我们重新输入伪码123123123，点击check it，哈哈哈！成功了！
当然，你也可以将jnz跳转也修改了！这样字符串长度也不用必须是9了。
4、注册机的探索
注册码判断的内容在关键跳转的上面，我们大概分析一下：
0040373F . FF15 24104000 call dword ptr ds:[<&MSVBVM60.__vbaHresu>; msvbvm60.__vbaHresultCheckObj00403745 > 8B45 E4 mov eax,dword ptr ss:[ebp-0x1C]00403748 . 50 push eax ; // "123123123"00403749 . FF15 08104000 call dword ptr ds:[<&MSVBVM60.__vbaLenBs>; msvbvm60.__vbaLenBstr0040374F . 8BC8 mov ecx,eax ; // eax = 900403751 . FF15 50104000 call dword ptr ds:[<&MSVBVM60.__vbaI2I4>>; msvbvm60.__vbaI2I400403757 . 8D4D E4 lea ecx,dword ptr ss:[ebp-0x1C] ; // ecx = "123123123"0040375A . 8985 14FFFFFF mov dword ptr ss:[ebp-0xEC],eax ; // eax = 900403760 . C745 E8 01000>mov dword ptr ss:[ebp-0x18],0x100403767 . FF15 C0104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeS>; msvbvm60.__vbaFreeStr0040376D . 8D4D D4 lea ecx,dword ptr ss:[ebp-0x2C]00403770 . FF15 C4104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeO>; msvbvm60.__vbaFreeObj00403776 . 8B35 AC104000 mov esi,dword ptr ds:[<&MSVBVM60.__vbaSt>; msvbvm60.__vbaStrMove0040377C > 66:8B8D 14FFF>mov cx,word ptr ss:[ebp-0xEC] ; // cx =eax00403783 . 66:394D E8 cmp word ptr ss:[ebp-0x18],cx ; // cx与0x1比较00403787 0F8F 17030000 jg 00403AA4 ; // 这个直接跳到正确，关键跳转
这块算法只进行了一个比较，将文本长度和0x1比较，大于则成功！但是，由于在这之前又进行了文本长度校验，长度必须为9，所以按照正常逻辑，这是永远不可能提示正确的！
SO，这个程序没有注册码，只能爆破！
BY 笨笨D幸福
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