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[原创]PhotoShrink 2.0算法分析
2009-12-7 21:57 4088

[原创]PhotoShrink 2.0算法分析

2009-12-7 21:57
4088
【破文标题】PhotoShrink 2.0算法分析
【破文作者】tianxj
【作者邮箱】[email]tianxj_2007@126.com[/email]
【作者主页】WwW.ChiNaPYG.CoM
【破解工具】PEiD,OD,DeDe
【破解平台】Windows XP sp3
【软件名称】PhotoShrink 2.0
【软件大小】1245KB
【软件语言】英文
【软件类别】国外软件/图像处理
【软件授权】共享版
【运行环境】Win9x/Me/NT/2000/XP/2003
【更新时间】2007-5-31
【原版下载】http://www.onlinedown.net/soft/58519.htm
【保护方式】注册码
【软件简介】PhotoShrink是一个使用方便的图形优化工具,可以根据电子邮件或者网页设计的需要对图形文件进行缩放以节省存储空间。它使用简单,支持批量缩放和鼠标操作,可以调整JPG格式文件的质量。
【破解声明】我是一只小菜鸟,偶得一点心得,愿与大家分享:)
--------------------------------------------------------------
【破解内容】
--------------------------------------------------------------
**************************************************************
一、对photoshrink.exe查壳为Borland Delphi 6.0 - 7.0
**************************************************************
二、用DeDe查找按钮事件就可以快速到达关键部位
00506A74  /.  55            push    ebp
00506A75  |.  8BEC          mov     ebp, esp
00506A77  |.  33C9          xor     ecx, ecx
00506A79  |.  51            push    ecx
00506A7A  |.  51            push    ecx
00506A7B  |.  51            push    ecx
00506A7C  |.  51            push    ecx
00506A7D  |.  51            push    ecx
00506A7E  |.  51            push    ecx
00506A7F  |.  53            push    ebx
00506A80  |.  8BD8          mov     ebx, eax
00506A82  |.  33C0          xor     eax, eax
00506A84  |.  55            push    ebp
00506A85  |.  68 C86B5000   push    00506BC8
00506A8A  |.  64:FF30       push    dword ptr fs:[eax]
00506A8D  |.  64:8920       mov     dword ptr fs:[eax], esp
00506A90  |.  8D55 FC       lea     edx, dword ptr [ebp-4]
00506A93  |.  8B83 08030000 mov     eax, dword ptr [ebx+308]
00506A99  |.  E8 02DFF3FF   call    004449A0
00506A9E  |.  837D FC 00    cmp     dword ptr [ebp-4], 0
00506AA2  |.  0F84 E4000000 je      00506B8C                         ;  //邮箱名为空则跳
00506AA8  |.  8D55 F4       lea     edx, dword ptr [ebp-C]
00506AAB  |.  8B83 08030000 mov     eax, dword ptr [ebx+308]
00506AB1  |.  E8 EADEF3FF   call    004449A0
00506AB6  |.  8B55 F4       mov     edx, dword ptr [ebp-C]           ;  //邮箱名
00506AB9  |.  8D4D F8       lea     ecx, dword ptr [ebp-8]
00506ABC  |.  A1 BC185100   mov     eax, dword ptr [5118BC]
00506AC1  |.  8B00          mov     eax, dword ptr [eax]
00506AC3  |.  E8 8C050000   call    00507054                         ;  //算法CALL
00506AC8  |.  8B45 F8       mov     eax, dword ptr [ebp-8]
00506ACB  |.  50            push    eax
00506ACC  |.  8D55 F0       lea     edx, dword ptr [ebp-10]
00506ACF  |.  8B83 10030000 mov     eax, dword ptr [ebx+310]
00506AD5  |.  E8 C6DEF3FF   call    004449A0
00506ADA  |.  8B55 F0       mov     edx, dword ptr [ebp-10]          ;  //试炼码
00506ADD  |.  58            pop     eax                              ;  //注册码
00506ADE  |.  E8 D9DEEFFF   call    004049BC                         ;  //比较CALL
00506AE3  |.  0F85 A3000000 jnz     00506B8C                         ;  //关键跳转
00506AE9  |.  8D55 EC       lea     edx, dword ptr [ebp-14]
00506AEC  |.  8B83 08030000 mov     eax, dword ptr [ebx+308]
00506AF2  |.  E8 A9DEF3FF   call    004449A0
00506AF7  |.  8B55 EC       mov     edx, dword ptr [ebp-14]
00506AFA  |.  A1 BC185100   mov     eax, dword ptr [5118BC]
00506AFF  |.  8B00          mov     eax, dword ptr [eax]
00506B01  |.  05 28030000   add     eax, 328
00506B06  |.  E8 EDDAEFFF   call    004045F8
00506B0B  |.  8D55 E8       lea     edx, dword ptr [ebp-18]
00506B0E  |.  8B83 10030000 mov     eax, dword ptr [ebx+310]
00506B14  |.  E8 87DEF3FF   call    004449A0
00506B19  |.  8B55 E8       mov     edx, dword ptr [ebp-18]
00506B1C  |.  A1 BC185100   mov     eax, dword ptr [5118BC]
00506B21  |.  8B00          mov     eax, dword ptr [eax]
00506B23  |.  05 2C030000   add     eax, 32C
00506B28  |.  E8 CBDAEFFF   call    004045F8
00506B2D  |.  A1 BC185100   mov     eax, dword ptr [5118BC]
00506B32  |.  8B00          mov     eax, dword ptr [eax]
00506B34  |.  C680 24030000>mov     byte ptr [eax+324], 1
00506B3B  |.  A1 BC185100   mov     eax, dword ptr [5118BC]
00506B40  |.  8B00          mov     eax, dword ptr [eax]
00506B42  |.  E8 05060000   call    0050714C
00506B47  |.  A1 BC185100   mov     eax, dword ptr [5118BC]
00506B4C  |.  8B00          mov     eax, dword ptr [eax]
00506B4E  |.  8B80 F4020000 mov     eax, dword ptr [eax+2F4]
00506B54  |.  33D2          xor     edx, edx
00506B56  |.  E8 65DDF3FF   call    004448C0
00506B5B  |.  A1 BC185100   mov     eax, dword ptr [5118BC]
00506B60  |.  8B00          mov     eax, dword ptr [eax]
00506B62  |.  8B80 08030000 mov     eax, dword ptr [eax+308]
00506B68  |.  BA 08000000   mov     edx, 8
00506B6D  |.  E8 76D5F3FF   call    004440E8
00506B72  |.  8BC3          mov     eax, ebx
00506B74  |.  E8 BB45F4FF   call    0044B134
00506B79  |.  BA D86B5000   mov     edx, 00506BD8                    ;  UNICODE "Thank you for registering PhotoShrink"
00506B7E  |.  E8 75B5F8FF   call    004920F8
00506B83  |.  8BC3          mov     eax, ebx
00506B85  |.  E8 7EB3F5FF   call    00461F08
00506B8A  |.  EB 11         jmp     short 00506B9D
00506B8C  |>  8BC3          mov     eax, ebx
00506B8E  |.  E8 A145F4FF   call    0044B134
00506B93  |.  BA 286C5000   mov     edx, 00506C28                    ;  UNICODE "Name and Key do not Match!",LF,LF,"Make sure you've entered your email address and the key correctly and th"
00506B98  |.  E8 CBB5F8FF   call    00492168
00506B9D  |>  33C0          xor     eax, eax
00506B9F  |.  5A            pop     edx
00506BA0  |.  59            pop     ecx
00506BA1  |.  59            pop     ecx
00506BA2  |.  64:8910       mov     dword ptr fs:[eax], edx
00506BA5  |.  68 CF6B5000   push    00506BCF
00506BAA  |>  8D45 E8       lea     eax, dword ptr [ebp-18]
00506BAD  |.  BA 04000000   mov     edx, 4
00506BB2  |.  E8 11DAEFFF   call    004045C8
00506BB7  |.  8D45 F8       lea     eax, dword ptr [ebp-8]
00506BBA  |.  E8 E5D9EFFF   call    004045A4
00506BBF  |.  8D45 FC       lea     eax, dword ptr [ebp-4]
00506BC2  |.  E8 DDD9EFFF   call    004045A4
00506BC7  \.  C3            retn
00506BC8   .^ E9 3FD3EFFF   jmp     00403F0C
00506BCD   .^ EB DB         jmp     short 00506BAA
00506BCF   .  5B            pop     ebx
00506BD0   .  8BE5          mov     esp, ebp
00506BD2   .  5D            pop     ebp
00506BD3   .  C3            retn
=====================================
00507054  /$  55            push    ebp
00507055  |.  8BEC          mov     ebp, esp
00507057  |.  6A 00         push    0
00507059  |.  6A 00         push    0
0050705B  |.  6A 00         push    0
0050705D  |.  53            push    ebx
0050705E  |.  56            push    esi
0050705F  |.  8BF1          mov     esi, ecx
00507061  |.  8955 FC       mov     dword ptr [ebp-4], edx
00507064  |.  8B45 FC       mov     eax, dword ptr [ebp-4]
00507067  |.  E8 F4D9EFFF   call    00404A60
0050706C  |.  33C0          xor     eax, eax
0050706E  |.  55            push    ebp
0050706F  |.  68 16715000   push    00507116
00507074  |.  64:FF30       push    dword ptr fs:[eax]
00507077  |.  64:8920       mov     dword ptr fs:[eax], esp
0050707A  |.  837D FC 00    cmp     dword ptr [ebp-4], 0
0050707E  |.  75 09         jnz     short 00507089                   ;  //邮箱名不为空则跳
00507080  |.  8BC6          mov     eax, esi
00507082  |.  E8 1DD5EFFF   call    004045A4
00507087  |.  EB 72         jmp     short 005070FB
00507089  |>  8D4D F8       lea     ecx, dword ptr [ebp-8]
0050708C  |.  BA 14000000   mov     edx, 14
00507091  |.  B8 2C715000   mov     eax, 0050712C                    ;  ASCII "How DARE you crack my software!"
00507096  |.  E8 0DB4F8FF   call    004924A8
0050709B  |.  BB 01000000   mov     ebx, 1
005070A0  |>  8B45 FC       /mov     eax, dword ptr [ebp-4]          ;  //邮箱名
005070A3  |.  E8 D0D7EFFF   |call    00404878                        ;  //取邮箱名长度
005070A8  |.  50            |push    eax
005070A9  |.  8BC3          |mov     eax, ebx
005070AB  |.  48            |dec     eax
005070AC  |.  5A            |pop     edx
005070AD  |.  8BCA          |mov     ecx, edx
005070AF  |.  99            |cdq
005070B0  |.  F7F9          |idiv    ecx
005070B2  |.  8B45 FC       |mov     eax, dword ptr [ebp-4]          ;  //邮箱名
005070B5  |.  8A0410        |mov     al, byte ptr [eax+edx]          ;  //循环取邮箱名
005070B8  |.  8B55 F8       |mov     edx, dword ptr [ebp-8]          ;  //字符串"How DARE you crack my software!"
005070BB  |.  8A541A FF     |mov     dl, byte ptr [edx+ebx-1]        ;  //逐位取字符串"How DARE you crack my software!"
005070BF  |.  32C2          |xor     al, dl                          ;  //异或
005070C1  |.  25 FF000000   |and     eax, 0FF
005070C6  |.  8D55 F4       |lea     edx, dword ptr [ebp-C]
005070C9  |.  E8 A221F0FF   |call    00409270                        ;  //EAX转10进制
005070CE  |.  8B45 F4       |mov     eax, dword ptr [ebp-C]          ;  //10进制字符
005070D1  |.  E8 A2D7EFFF   |call    00404878
005070D6  |.  8B55 F4       |mov     edx, dword ptr [ebp-C]          ;  //10进制字符
005070D9  |.  8A4402 FF     |mov     al, byte ptr [edx+eax-1]        ;  //取字符右边1位
005070DD  |.  50            |push    eax
005070DE  |.  8D45 F8       |lea     eax, dword ptr [ebp-8]
005070E1  |.  E8 E2D9EFFF   |call    00404AC8
005070E6  |.  5A            |pop     edx
005070E7  |.  885418 FF     |mov     byte ptr [eax+ebx-1], dl        ;  //保存
005070EB  |.  43            |inc     ebx                             ;  //计数器+1
005070EC  |.  83FB 15       |cmp     ebx, 15
005070EF  |.^ 75 AF         \jnz     short 005070A0                  ;  //循环
005070F1  |.  8BC6          mov     eax, esi
005070F3  |.  8B55 F8       mov     edx, dword ptr [ebp-8]           ;  //注册码
005070F6  |.  E8 FDD4EFFF   call    004045F8
005070FB  |>  33C0          xor     eax, eax
005070FD  |.  5A            pop     edx
005070FE  |.  59            pop     ecx
005070FF  |.  59            pop     ecx
00507100  |.  64:8910       mov     dword ptr fs:[eax], edx
00507103  |.  68 1D715000   push    0050711D
00507108  |>  8D45 F4       lea     eax, dword ptr [ebp-C]
0050710B  |.  BA 03000000   mov     edx, 3
00507110  |.  E8 B3D4EFFF   call    004045C8
00507115  \.  C3            retn
00507116   .^ E9 F1CDEFFF   jmp     00403F0C
0050711B   .^ EB EB         jmp     short 00507108
0050711D   .  5E            pop     esi
0050711E   .  5B            pop     ebx
0050711F   .  8BE5          mov     esp, ebp
00507121   .  5D            pop     ebp
00507122   .  C3            retn

**************************************************************  
【破解总结】
--------------------------------------------------------------
【算法总结】
用户名和固定字符串"How DARE you crack my software!"中的字符异或得到注册码
--------------------------------------------------------------
【算法注册机】
〖VB代码〗
Private Sub Command1_Click()
If Len(Text1.Text) = 0 Then
   Text2.Text = "输入有误,请重新输入!"
Else  
   For I = 1 To 20
   J = ((I - 1) Mod Len(Text1.Text)) + 1
   X = Asc(Mid(Text1.Text, J, 1)) Xor Asc(Mid("How DARE you crack my software!", I, 1))
   Y = Y & Right(X, 1)
   Next
  Text2.Text = Y
End If
End Sub
--------------------------------------------------------------
感谢飘云老大、猫老大、Nisy老大以及很多前辈们的学习教程以及所有帮助过我的论坛兄弟姐妹们!谢谢
--------------------------------------------------------------
【版权声明】破文是学习的手记,兴趣是成功的源泉;本破文纯属技术交流, 转载请注明作者并保持文章的完整, 谢谢!

[2022冬季班]《安卓高级研修班(网课)》月薪三万班招生中~

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