【破解作者】 Bmzy
【作者主页】 http://www.9ycn.com/
【使用工具】 OllyDbg v1.10 , PEiD v0.92 , HexWorkshop v4.23
【破解平台】 WinXP SP2
【软件名称】 Multi Clipboard m9.75.01
【下载地址】 http://www.skycn.com/soft/3865.html
【软件简介】 一个小巧简单易用的剪贴板增强程序。它提供了每个可
以保存10240个字符的多达33个保存区域，在您需要粘贴
的时候，只需要轻松点击该区域的按钮即可，真正让您随
心贴。您还可以自定义按钮的名称和顺序，支持多种数据
格式，您可以保存多种不同格式的文本资源，尤其适用于
烦琐单一的资料填写，不愧是您网络填表的好帮手。
【软件大小】 349 KB
【破解声明】 学习交流并快乐着......
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【破解内容】
PEiD检查，程序的编程语言是Microsoft Visual C++ 7.0，无壳。
od载入，软件开始，到注册处，填入1234abcd。设断MessageBoxA，按确定按钮，停下后按Ctrl+F9往上返，返到4070EB，
向上拉判断应是确定按钮的处理函数，开始分析。
这个软件是明码比较，做内存注册机很简单，我在这里使用修改代码使程序自己显示注册码的方法，当作练习。
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00406C61 mov eax,dword ptr ss:[esp+8]
00406C65 push ebx
00406C66 and eax,0FFFF
00406C6B push esi
00406C6C cmp eax,486
00406C71 push edi
00406C72 mov dword ptr ss:[esp+C],ecx
00406C76 jl MLTCLIP.004070D4
00406C7C cmp eax,487
00406C81 jg MLTCLIP.004070D4
00406C87 push 50 ; /Arg3 = 00000050
00406C89 push MLTCLIP.00451760 ; |Arg2 = 00451760 ASCII "Bmzy"
00406C8E push 484 ; |Arg1 = 00000484
00406C93 mov ecx,MLTCLIP.0044B350 ; |ASCII "4cC"
00406C98 call MLTCLIP.0042C56B ; \MLTCLIP.0042C56B
00406C9D mov edi,MLTCLIP.00451760 ; ASCII "Bmzy"
00406CA2 or ecx,FFFFFFFF
00406CA5 xor eax,eax
00406CA7 repne scas byte ptr es:[edi]
00406CA9 not ecx
00406CAB dec ecx
00406CAC cmp ecx,3 检测Register Name 字串长不能小于等于3
00406CAF jnb short MLTCLIP.00406D07
00406CB1 push MLTCLIP.00451760 ; ASCII "Bmzy"
00406CB6 push MLTCLIP.00446A2C ; ASCII "The name (%s) that you are attempting to register is
not valid, because it is too short."
00406CBB push MLTCLIP.0044B71C ; ASCII "303438373B3B"
00406CC0 call MLTCLIP.00418D55
00406CC5 add esp,0C
00406CC8 mov ecx,MLTCLIP.0044B350 ; ASCII "4cC"
00406CCD push 40
00406CCF push MLTCLIP.0044450C ; ASCII "Multi Clipboard"
00406CD4 push MLTCLIP.0044B71C ; ASCII "303438373B3B"
00406CD9 call MLTCLIP.0042B41F
00406CDE push 484
00406CE3 mov ecx,MLTCLIP.0044B350 ; ASCII "4cC"
00406CE8 call MLTCLIP.0042C513
00406CED mov eax,dword ptr ds:[eax+1C]
00406CF0 mov ecx,dword ptr ds:[44B36C]
00406CF6 push 1 ; /lParam = 1
00406CF8 push eax ; |wParam
00406CF9 push 28 ; |Message = WM_NEXTDLGCTL
00406CFB push ecx ; |hWnd => 1509D8
00406CFC call dword ptr ds:[<&USER32.SendMessageA>] ; \SendMessageA
00406D02 jmp MLTCLIP.004070D4
00406D07 push 50 ; /Arg3 = 00000050
00406D09 push MLTCLIP.004517B0 ; |Arg2 = 004517B0 ASCII "Bmzy@PCG.com"
00406D0E push 485 ; |Arg1 = 00000485
00406D13 mov ecx,MLTCLIP.0044B350 ; |ASCII "4cC"
00406D18 call MLTCLIP.0042C56B ; \MLTCLIP.0042C56B
00406D1D mov edx,dword ptr ds:[4A6498]
00406D23 push 1
00406D25 push MLTCLIP.004517B0 ; ASCII "Bmzy@PCG.com"
00406D2A push edx
00406D2B call MLTCLIP.0040D7A0
00406D30 add esp,0C
00406D33 cmp eax,1 检测Register Email 填的是否符合要求
00406D36 je short MLTCLIP.00406D8E
00406D38 push MLTCLIP.0044450C ; ASCII "Multi Clipboard"
00406D3D push MLTCLIP.00445D34 ; ASCII "%s, Your Email Address"
00406D42 push MLTCLIP.00451074
00406D47 call MLTCLIP.00418D55
00406D4C push MLTCLIP.0043F35C ; ASCII "Enter your [tech-support]...."
00406D51 push 50
00406D53 push MLTCLIP.004517B0 ; ASCII "Bmzy@PCG.com"
00406D58 call MLTCLIP.004091C0
00406D5D add esp,18
00406D60 mov ecx,MLTCLIP.0044B350 ; ASCII "4cC"
00406D65 push MLTCLIP.004517B0 ; ASCII "Bmzy@PCG.com"
00406D6A push 485
00406D6F call MLTCLIP.0042C60A
00406D74 mov eax,dword ptr ds:[4A6498]
00406D79 push 1
00406D7B push MLTCLIP.004517B0 ; ASCII "Bmzy@PCG.com"
00406D80 push eax
00406D81 call MLTCLIP.0040D7A0
00406D86 add esp,0C
00406D89 cmp eax,1
00406D8C jnz short MLTCLIP.00406D38
00406D8E push 0
00406D90 push 1
00406D92 call MLTCLIP.00409480
00406D97 add esp,8
00406D9A mov ecx,8
00406D9F xor eax,eax
00406DA1 mov edi,MLTCLIP.00453110 ; ASCII "1111"
00406DA6 rep stos dword ptr es:[edi]
00406DA8 push 20 ; /Arg3 = 00000020
00406DAA push MLTCLIP.00453110 ; |Arg2 = 00453110 ASCII "1111"
00406DAF push 483 ; |Arg1 = 00000483
00406DB4 mov ecx,MLTCLIP.0044B350 ; |ASCII "4cC"
00406DB9 call MLTCLIP.0042C56B ; \MLTCLIP.0042C56B
00406DBE mov ecx,40
00406DC3 xor eax,eax
00406DC5 mov edi,MLTCLIP.0044B41C ; ASCII "303438373B3B"
00406DCA push MLTCLIP.0044B41C ; ASCII "303438373B3B"
00406DCF push MLTCLIP.0044450C ; ASCII "Multi Clipboard"
00406DD4 push MLTCLIP.00451760 ; ASCII "Bmzy"
00406DD9 rep stos dword ptr es:[edi]
00406DDB call MLTCLIP.00408C60
00406DE0 push MLTCLIP.0044B41C ; ASCII "303438373B3B"
00406DE5 call MLTCLIP.00408BE0
00406DEA push MLTCLIP.00453110 ; ASCII "1111"
00406DEF call MLTCLIP.00408BE0
00406DF4 mov edi,MLTCLIP.00453110 ; ASCII "1111"
00406DF9 or ecx,FFFFFFFF
00406DFC xor eax,eax
00406DFE add esp,14
00406E01 repne scas byte ptr es:[edi]
00406E03 not ecx
00406E05 sub edi,ecx
00406E07 mov ebx,dword ptr ds:[<&KERNEL32.WritePrivateProfil>; kernel32.WritePrivateProfileStringA
00406E0D mov edx,ecx
00406E0F mov esi,edi
00406E11 mov edi,MLTCLIP.0043F488 ; ASCII "1111"
00406E16 push MLTCLIP.00450F70 ; /FileName = "D:\WINDOWS\MLTCLIP.INI"
00406E1B shr ecx,2 ; |
00406E1E rep movs dword ptr es:[edi],dword ptr ds:[esi] ; |
00406E20 mov ecx,edx ; |
00406E22 push MLTCLIP.0043F488 ; |String = "1111"
00406E27 and ecx,3 ; |
00406E2A push MLTCLIP.00444274 ; |Key = "CurrentUserStatus"
00406E2F rep movs byte ptr es:[edi],byte ptr ds:[esi] ; |
00406E31 push MLTCLIP.004441B8 ; |Section = "Configure"
00406E36 call ebx ; \WritePrivateProfileStringA
00406E38 mov edi,MLTCLIP.0044B41C ; ASCII "303438373B3B"
00406E3D or ecx,FFFFFFFF
00406E40 xor eax,eax
00406E42 mov esi,MLTCLIP.00453110 ; ASCII "1111"
00406E47 repne scas byte ptr es:[edi]
00406E49 not ecx
00406E4B dec ecx
00406E4C mov edi,MLTCLIP.0044B41C ; ASCII "303438373B3B"
00406E51 xor eax,eax
00406E53 repe cmps byte ptr es:[edi],byte ptr ds:[esi]
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00406E55 jnz short MLTCLIP.00406ECC 这两句被我改为 00406E55 jnz MLTCLIP.00400350
00406E57 mov edi,MLTCLIP.0044B41C 00406E5B nop
这里是比较注册码，然后跳转。正确的注册码在[edi]中，我在这里修改，如果填的注册码不对，就
跳到我在400350处填的语句，显示一个对话框，显示出正确的注册码。这里占用了406E57，因此，到
400350处要补上。在400350处执行完毕后，再跳回下面的406E5C继续执行。
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00406E5C or ecx,FFFFFFFF
00406E5F repne scas byte ptr es:[edi]
00406E61 not ecx
00406E63 dec ecx
00406E64 mov edi,MLTCLIP.00453110 ; ASCII "1111"
00406E69 mov edx,ecx
00406E6B or ecx,FFFFFFFF
00406E6E repne scas byte ptr es:[edi]
00406E70 not ecx
00406E72 dec ecx
00406E73 cmp ecx,edx
00406E75 jnz short MLTCLIP.00406ECC
00406E77 push MLTCLIP.0044450C ; ASCII "Multi Clipboard"
00406E7C push MLTCLIP.004431F4 ; ASCII "Thank you for registering "
00406E81 push MLTCLIP.00446A24 ; ASCII "%s%s!"
00406E86 push MLTCLIP.0044B71C ; ASCII "303438373B3B"
00406E8B mov dword ptr ds:[4A62D4],1
00406E95 call MLTCLIP.00418D55
00406E9A add esp,10
00406E9D mov ecx,MLTCLIP.0044B350 ; ASCII "4cC"
00406EA2 push 40
00406EA4 push MLTCLIP.0044450C ; ASCII "Multi Clipboard"
00406EA9 push MLTCLIP.0044B71C ; ASCII "303438373B3B"
00406EAE call MLTCLIP.0042B41F
00406EB3 mov ecx,MLTCLIP.0044B350 ; ASCII "4cC"
00406EB8 mov dword ptr ds:[4A632C],0
00406EC2 call MLTCLIP.0042987D
00406EC7 jmp MLTCLIP.004070D4
00406ECC push 20 ; /Arg3 = 00000020
00406ECE push MLTCLIP.00453110 ; |Arg2 = 00453110 ASCII "1111"
00406ED3 push 483 ; |Arg1 = 00000483
00406ED8 mov ecx,MLTCLIP.0044B350 ; |ASCII "4cC"
00406EDD call MLTCLIP.0042C56B ; \MLTCLIP.0042C56B
00406EE2 push MLTCLIP.00453110 ; ASCII "1111"
00406EE7 call MLTCLIP.0040B2A0
00406EEC add esp,4
00406EEF mov dword ptr ds:[451488],eax
00406EF4 test eax,eax
00406EF6 jle MLTCLIP.004070A5 注册码将被在这里写入ini文件
00406EFC push MLTCLIP.00450F70 ; /IniFileName = "D:\WINDOWS\MLTCLIP.INI"
00406F01 push 2800 ; |BufSize = 2800 (10240.)
00406F06 push MLTCLIP.0044B71C ; |ReturnBuffer = MLTCLIP.0044B71C
00406F0B mov ecx,0A00 ; |
00406F10 xor eax,eax ; |
00406F12 mov edi,MLTCLIP.0044B71C ; |ASCII "303438373B3B"
00406F17 push MLTCLIP.0044B71C ; |Default = "303438373B3B"
00406F1C push MLTCLIP.00444288 ; |Key = "CurrentUserTmpReg"
00406F21 rep stos dword ptr es:[edi] ; |
00406F23 push MLTCLIP.004441B8 ; |Section = "Configure"
00406F28 call dword ptr ds:[<&KERNEL32.GetPrivateProfileStri>; \GetPrivateProfileStringA
00406F2E push MLTCLIP.0044B71C ; ASCII "303438373B3B"
00406F33 call MLTCLIP.0040B2A0
00406F38 add esp,4
00406F3B test eax,eax
00406F3D jnz MLTCLIP.00406FE6
00406F43 mov edi,MLTCLIP.00453110 ; ASCII "1111"
00406F48 or ecx,FFFFFFFF
00406F4B repne scas byte ptr es:[edi]
00406F4D not ecx
00406F4F sub edi,ecx
00406F51 push MLTCLIP.004A6350
00406F56 mov eax,ecx
00406F58 mov esi,edi
00406F5A mov edi,MLTCLIP.0044B71C ; ASCII "303438373B3B"
00406F5F shr ecx,2
00406F62 rep movs dword ptr es:[edi],dword ptr ds:[esi]
00406F64 mov ecx,eax
00406F66 and ecx,3
00406F69 rep movs byte ptr es:[edi],byte ptr ds:[esi]
00406F6B call MLTCLIP.004192DE
00406F70 mov eax,dword ptr ds:[451488]
00406F75 lea eax,dword ptr ds:[eax+eax*2]
00406F78 lea eax,dword ptr ds:[eax+eax*4]
00406F7B lea eax,dword ptr ds:[eax+eax*4]
00406F7E lea ecx,dword ptr ds:[eax+eax*8]
00406F81 mov eax,dword ptr ds:[4A6350]
00406F86 shl ecx,7
00406F89 add eax,ecx
00406F8B push eax
00406F8C push MLTCLIP.00445D4C ; ASCII "%lu"
00406F91 push MLTCLIP.0044B41C ; ASCII "303438373B3B"
00406F96 mov dword ptr ds:[4A6350],eax
00406F9B call MLTCLIP.00418D55
00406FA0 mov edi,MLTCLIP.0044B41C ; ASCII "303438373B3B"
00406FA5 or ecx,FFFFFFFF
00406FA8 xor eax,eax
00406FAA add esp,10
00406FAD repne scas byte ptr es:[edi]
00406FAF not ecx
00406FB1 sub edi,ecx
00406FB3 push MLTCLIP.00450F70 ; ASCII "D:\WINDOWS\MLTCLIP.INI"
00406FB8 mov esi,edi
00406FBA mov edx,ecx
00406FBC mov edi,MLTCLIP.0044B71C ; ASCII "303438373B3B"
00406FC1 or ecx,FFFFFFFF
00406FC4 repne scas byte ptr es:[edi]
00406FC6 mov ecx,edx
00406FC8 dec edi
00406FC9 shr ecx,2
00406FCC rep movs dword ptr es:[edi],dword ptr ds:[esi]
00406FCE mov ecx,edx
00406FD0 push MLTCLIP.0044B71C ; ASCII "303438373B3B"
00406FD5 and ecx,3
00406FD8 push MLTCLIP.00444288 ; ASCII "CurrentUserTmpReg"
00406FDD rep movs byte ptr es:[edi],byte ptr ds:[esi]
00406FDF push MLTCLIP.004441B8 ; ASCII "Configure"
00406FE4 call ebx
00406FE6 push MLTCLIP.0044B71C ; ASCII "303438373B3B"
00406FEB call MLTCLIP.0040B2A0
00406FF0 add esp,4
00406FF3 test eax,eax
00406FF5 jle MLTCLIP.004070A5
00406FFB mov edi,MLTCLIP.00443210 ; ASCII "T1M1PMC"
00407000 or ecx,FFFFFFFF
00407003 xor eax,eax
00407005 repne scas byte ptr es:[edi]
00407007 not ecx
00407009 dec ecx
0040700A add ecx,MLTCLIP.0044B71C ; ASCII "303438373B3B"
00407010 push ecx
00407011 call MLTCLIP.00419248
00407016 push MLTCLIP.004A6354
0040701B mov dword ptr ds:[4A6350],eax
00407020 call MLTCLIP.004192DE
00407025 mov eax,dword ptr ds:[4A6354]
0040702A mov ecx,dword ptr ds:[4A6350]
00407030 add eax,32
00407033 add esp,8
00407036 mov dword ptr ds:[4A6354],eax
0040703B lea edx,dword ptr ds:[eax+BDD80]
00407041 cmp ecx,edx
00407043 jnb short MLTCLIP.0040709B
00407045 cmp eax,ecx
00407047 jnb short MLTCLIP.0040709B
00407049 push MLTCLIP.0044450C ; ASCII "Multi Clipboard"
0040704E push MLTCLIP.004431F4 ; ASCII "Thank you for registering "
00407053 push MLTCLIP.00446A24 ; ASCII "%s%s!"
00407058 push MLTCLIP.0044B71C ; ASCII "303438373B3B"
0040705D mov dword ptr ds:[4A62D4],2
00407067 call MLTCLIP.00418D55
0040706C add esp,10
0040706F mov ecx,MLTCLIP.0044B350 ; ASCII "4cC"
00407074 push 40
00407076 push MLTCLIP.0044450C ; ASCII "Multi Clipboard"
0040707B push MLTCLIP.0044B71C ; ASCII "303438373B3B"
00407080 call MLTCLIP.0042B41F
00407085 mov ecx,MLTCLIP.0044B350 ; ASCII "4cC"
0040708A mov dword ptr ds:[4A632C],0
00407094 call MLTCLIP.0042987D
00407099 jmp short MLTCLIP.004070D4
0040709B mov dword ptr ds:[4A632C],1
004070A5 cmp word ptr ss:[esp+14],487
004070AC jnz short MLTCLIP.004070C0
004070AE push MLTCLIP.0044B350 ; ASCII "4cC"
004070B3 call MLTCLIP.00410F90 错误会走到这里，出错误提示消息
004070B8 add esp,4
004070BB cmp eax,6
004070BE je short MLTCLIP.004070D4
004070C0 mov ecx,MLTCLIP.0044B350 ; ASCII "4cC"
004070C5 mov dword ptr ds:[44E274],1
004070CF call MLTCLIP.00406940
004070D4 mov eax,dword ptr ss:[esp+18]
004070D8 mov ecx,dword ptr ss:[esp+14]
004070DC push eax ; /Arg2
004070DD push ecx ; |Arg1
004070DE mov ecx,dword ptr ss:[esp+14] ; |
004070E2 call MLTCLIP.0042B22D ; \MLTCLIP.0042B22D
004070E7 pop edi
004070E8 pop esi
004070E9 pop ebx
004070EA pop ecx
004070EB retn 8
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要调用MessageBox，一般程序都会调用，找到导入表这个函数的地址就行了，如果程序没有调用，可以自己添加导入函数，PEedit就有这个功能。
我将自己为了显示消息框的代码和数据放到了程序前面，dos头的后面。400300处放了一个字串。我添加的代码从400350开始，首先保存寄存器。因为这个注册对话框的属性是总在最前，如果调用MessageBox的父窗口参数传0，消息框为桌面窗口的子窗口，消息框将显示在注册对话框的后面，必须给这个参数传对话框窗口的句柄，这样我要显示的对话框才能在前面。那对话框窗口的句柄在哪里呢,经过分析当执行到这句时堆栈栈顶指向的是一个结构的指针，在它偏移1C处就是注册对话框的句柄。好，因为我调用了pushad,因此，我要从[esp+20]处取这个结构的指针，然后就可以调MessageBox了。调用后，恢复寄存器，再重写原改动跳转占用的406E57一句，最后跳回。
00400300 B1 F0 CF B9 CA D4 C1 CB A3 A1 C4 E3 B5 C4 D7 A2 别瞎试了！你的注
00400310 B2 E1 C2 EB D3 A6 B8 C3 CA C7 00 00 00 00 00 00 册码应该是......
00400350 60 pushad 保存寄存器
00400351 8B4424 20 mov eax,dword ptr ss:[esp+20] 获得结构地址
00400355 8B40 1C mov eax,dword ptr ds:[eax+1C] 获得偏移1C处的注册对话框窗口句柄
00400358 6A 00 push 0 对话框样式传0，只要确定按钮
0040035A 68 00034000 push MLTCLIP.00400300 窗口标题传我的字串
0040035F 57 push edi 消息内容传正确的注册码字串的地址
00400360 50 push eax 传注册对话框窗口句柄
00400361 FF15 98544300 call dword ptr ds:[<&USER32.MessageBoxA>] 调用USER32.MessageBoxA
00400367 61 popad 恢复寄存器
00400368 BF 1CB44400 mov edi,MLTCLIP.0044B41C 重写被覆盖的语句
0040036D E9 EA6A0000 jmp MLTCLIP.00406E5C 跳回
好，用HexWorkshop打开程序，写入，保存。运行程序，随便填一个注册码，显示消息框，注册码是303438373B3B，
填入，成功。
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得到的一个可用的注册码为：
Register Name ： Bmzy
Register Email ： Bmzy@PCG.com
Registration Code ：303438373B3B
这个程序是注册名、Email和注册码相对应的。
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