[高额悬赏]放一个VC CrackMe 测试保护强度
初学VC，写个VC程序... （要求：分析算法 -- 非常简单 非常非常简单）试一试 自己出钱高额悬赏
不能运行请下载 Visual C++ 2008 Runtime Library
http://www.microsoft.com/downloads/details.aspx?familyid=9B2DA534-3E03-4391-8A4D-074B9F2BC1BF&displaylang=en
2-3M
CrackMe1.exe 我错了
动不起来
http://pic.禁止使用网挣网盘/servlet/ReadFileStream?filename=//zzage/上传分享/2008/10/23/10.jpg 不知道可有我写的那个强大，好象不能运行，自己更新下附件。 运行不起来,进程里可以看到但是没有界面,郁闷!
OD载入看了一下,莫非这里就是大牛所说的非常简单 非常非常简单的算法?
........
004011E3F>call ebp
004011E58>lea edx,dword ptr ds:
004011E88>cmp edx,0D;判断??的位数
004011EB0>ja CrackMe2.004012B0
004011F18>cmp eax,0C;??的位数必须为12位
004011F40>jnz CrackMe2.004012B0
004011FA8>lea eax,dword ptr ds:
004011FD5>push eax
004011FE8>lea ecx,dword ptr ss:
004012025>push ecx
004012035>push edi
004012048>mov edi,dword ptr ds:[<&USER32.GetWindow>; USER32.GetWindowTextW
0040120AF>call edi
0040120C6>push 0D
0040120E8>lea edx,dword ptr ss:
004012125>push edx
004012135>push ebx
00401214F>call edi
004012163>xor edi,edi
004012183>xor ecx,ecx
0040121A8>test esi,esi
0040121C7>jle short CrackMe2.00401239
0040121E8>mov edi,edi
______________________________________________________________
004012200>movzx eax,word ptr ss:;按位取运算
004012259>cdq
00401226B>mov ebx,1E
0040122BF>idiv ebx
0040122D4>inc ecx
0040122E3>cmp ecx,esi
004012308>lea edi,dword ptr ds:
00401237^ 7>jl short CrackMe2.00401220
_______________________________________________________________
004012395>push edi
0040123A8>lea eax,dword ptr ss:
0040123E6>push CrackMe2.00402190 ; UNICODE "0000%8X"
004012435>push eax
00401244F>call dword ptr ds:[<&USER32.wsprintfW>]; USER32.wsprintfW
0040124A8>add esp,0C;上面完成结果格式化
0040124D8>lea ecx,dword ptr ss:
004012518>lea eax,dword ptr ss:
004012556>mov dx,word ptr ds:;这下面的就是比较了
004012586>cmp dx,word ptr ds:
0040125B7>jnz short CrackMe2.0040127B
0040125D6>test dx,dx
004012607>je short CrackMe2.00401277
004012626>mov dx,word ptr ds:
004012666>cmp dx,word ptr ds:
0040126A7>jnz short CrackMe2.0040127B
0040126C8>add eax,4
0040126F8>add ecx,4
004012726>test dx,dx
00401275^ 7>jnz short CrackMe2.00401255
004012773>xor eax,eax
00401279E>jmp short CrackMe2.00401280
0040127B1>sbb eax,eax
0040127D8>sbb eax,-1
004012806>push 0
004012826>push 0
004012848>test eax,eax
004012867>jnz short CrackMe2.0040129C
004012888>mov ecx,dword ptr ds:
0040128E6>push 464
........ 库安装出错 同上。。。。。 http://www.microsoft.com/downloads/details.aspx?familyid=9B2DA534-3E03-4391-8A4D-074B9F2BC1BF&displaylang=en
试试这个 004011F1 .83F8 0C cmp eax, 0C
004011F4 .0F85 B6000000 jnz 004012B0 //注册码 密码12位
00401220 > /0FB7444C 48 movzx eax, word ptr
00401225 . |99cdq
00401226 . |BB 1E000000 mov ebx, 1E
0040122B . |F7FBidivebx
0040122D . |41inc ecx
0040122E . |3BCEcmp ecx, esi
00401230 . |8DBC17 8AF62F>lea edi, dword ptr // edi=edi+edx+0x12ff68a
00401237 .^\7C E7 jlshort 00401220//逐个取用户名
00401239 >57pushedi; |
0040123A .8D4424 14 lea eax, dword ptr ; |
0040123E .68 90214000 push00402190 ; |0000%8x
00401243 .50pusheax; |s
00401244 .FF15 C4204000 calldword ptr [<&USER32.wsprintfW>]; \wsprintfW//对结果edi格式化得到注册码
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