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[原创]1st Email Address Verifier V4.99注册算法浅析
2008-9-19 23:24 5994

[原创]1st Email Address Verifier V4.99注册算法浅析

2008-9-19 23:24
5994
【文章标题】: 1st Email Address Verifier V4.99注册算法浅析
【文章作者】: 蚊香
【作者邮箱】: xpi386com@gmail.com
【作者主页】: http://www.xpi386.com
【软件大小】: 1.23MB
【下载地址】: http://www.skycn.com/soft/29878.html
【使用工具】: PEiD,OllyDBG,计算器
【操作平台】: D版XP-SP3
【软件介绍】: 一款对邮件列表中的电子邮件地址进行验证的工具。
【作者声明】: 只是感兴趣,没有其他目的。失误之处敬请诸位大侠赐教!
--------------------------------------------------------------------------------
【详细过程】
  PEiD瞄了一下,Delphi~~~ OD载入时发现卡的很~~~ 换个版本的OD情况依然~~~ 于是改为OD附加进程..这回成功了,哈~~
  试注册发现弹框提示错误,于是用F12暂停找堆栈调用的方法很快找到关键的地方~~~~~
  
  005C29F3    55              PUSH EBP                                 ; 用F12暂停法找到这里下断
  005C29F4    68 CF2B5C00     PUSH XVerifie.005C2BCF
  005C29F9    64:FF30         PUSH DWORD PTR FS:[EAX]
  005C29FC    64:8920         MOV DWORD PTR FS:[EAX],ESP
  005C29FF    8D55 F0         LEA EDX,DWORD PTR SS:[EBP-10]
  005C2A02    8B45 FC         MOV EAX,DWORD PTR SS:[EBP-4]
  005C2A05    8B80 08030000   MOV EAX,DWORD PTR DS:[EAX+308]
  005C2A0B    E8 940AECFF     CALL XVerifie.004834A4                   ; 取用户名
  005C2A10    8B45 F0         MOV EAX,DWORD PTR SS:[EBP-10]
  005C2A13    8D55 F4         LEA EDX,DWORD PTR SS:[EBP-C]
  005C2A16    E8 1169E4FF     CALL XVerifie.0040932C
  005C2A1B    837D F4 00      CMP DWORD PTR SS:[EBP-C],0
  005C2A1F    0F84 5A010000   JE XVerifie.005C2B7F
  005C2A25    8D55 E8         LEA EDX,DWORD PTR SS:[EBP-18]
  005C2A28    8B45 FC         MOV EAX,DWORD PTR SS:[EBP-4]
  005C2A2B    8B80 10030000   MOV EAX,DWORD PTR DS:[EAX+310]
  005C2A31    E8 6E0AECFF     CALL XVerifie.004834A4                   ; 取注册码
  005C2A36    8B45 E8         MOV EAX,DWORD PTR SS:[EBP-18]
  005C2A39    8D55 EC         LEA EDX,DWORD PTR SS:[EBP-14]
  005C2A3C    E8 EB68E4FF     CALL XVerifie.0040932C
  005C2A41    837D EC 00      CMP DWORD PTR SS:[EBP-14],0
  005C2A45    0F84 34010000   JE XVerifie.005C2B7F
  005C2A4B    8D55 E0         LEA EDX,DWORD PTR SS:[EBP-20]
  005C2A4E    8B45 FC         MOV EAX,DWORD PTR SS:[EBP-4]
  005C2A51    8B80 10030000   MOV EAX,DWORD PTR DS:[EAX+310]
  005C2A57    E8 480AECFF     CALL XVerifie.004834A4                   ; 注册码位数
  005C2A5C    8B45 E0         MOV EAX,DWORD PTR SS:[EBP-20]
  005C2A5F    8D55 E4         LEA EDX,DWORD PTR SS:[EBP-1C]
  005C2A62    E8 C568E4FF     CALL XVerifie.0040932C
  005C2A67    8B45 E4         MOV EAX,DWORD PTR SS:[EBP-1C]
  005C2A6A    50              PUSH EAX
  005C2A6B    8D55 DC         LEA EDX,DWORD PTR SS:[EBP-24]
  005C2A6E    8B45 FC         MOV EAX,DWORD PTR SS:[EBP-4]
  005C2A71    8B80 08030000   MOV EAX,DWORD PTR DS:[EAX+308]
  005C2A77    E8 280AECFF     CALL XVerifie.004834A4                   ; 用户名位数
  005C2A7C    8B55 DC         MOV EDX,DWORD PTR SS:[EBP-24]
  005C2A7F    A1 6C995C00     MOV EAX,DWORD PTR DS:[5C996C]
  005C2A84    8B00            MOV EAX,DWORD PTR DS:[EAX]
  005C2A86    8B80 44030000   MOV EAX,DWORD PTR DS:[EAX+344]
  005C2A8C    33C9            XOR ECX,ECX
  005C2A8E    E8 5573FAFF     CALL XVerifie.00569DE8                   ; 关键CALL,F7进
  005C2A93    84C0            TEST AL,AL
  005C2A95    74 6A           JE SHORT XVerifie.005C2B01               ; 跳向失败
  005C2A97    A1 3C975C00     MOV EAX,DWORD PTR DS:[5C973C]
  005C2A9C    C600 01         MOV BYTE PTR DS:[EAX],1
  005C2A9F    6A 40           PUSH 40
  005C2AA1    8D55 D8         LEA EDX,DWORD PTR SS:[EBP-28]
  005C2AA4    A1 189B5C00     MOV EAX,DWORD PTR DS:[5C9B18]
  005C2AA9    8B00            MOV EAX,DWORD PTR DS:[EAX]
  005C2AAB    E8 C009EEFF     CALL XVerifie.004A3470
  005C2AB0    8B45 D8         MOV EAX,DWORD PTR SS:[EBP-28]
  005C2AB3    E8 E422E4FF     CALL XVerifie.00404D9C
  005C2AB8    50              PUSH EAX
  005C2AB9    8D55 D4         LEA EDX,DWORD PTR SS:[EBP-2C]
  005C2ABC    A1 4C9B5C00     MOV EAX,DWORD PTR DS:[5C9B4C]
  005C2AC1    E8 FE41E4FF     CALL XVerifie.00406CC4
  005C2AC6    8B45 D4         MOV EAX,DWORD PTR SS:[EBP-2C]
  005C2AC9    E8 CE22E4FF     CALL XVerifie.00404D9C
  005C2ACE    8BD0            MOV EDX,EAX
  005C2AD0    A1 189B5C00     MOV EAX,DWORD PTR DS:[5C9B18]
  005C2AD5    8B00            MOV EAX,DWORD PTR DS:[EAX]
  005C2AD7    59              POP ECX
  005C2AD8    E8 FB0FEEFF     CALL XVerifie.004A3AD8                   ; 正确提示
  005C2ADD    8B15 3C975C00   MOV EDX,DWORD PTR DS:[5C973C]            ; XVerifie.005CCFB8
  005C2AE3    8A12            MOV DL,BYTE PTR DS:[EDX]
  005C2AE5    A1 6C995C00     MOV EAX,DWORD PTR DS:[5C996C]
  005C2AEA    8B00            MOV EAX,DWORD PTR DS:[EAX]
  005C2AEC    8B80 CC030000   MOV EAX,DWORD PTR DS:[EAX+3CC]
  005C2AF2    E8 BD4FFFFF     CALL XVerifie.005B7AB4
  005C2AF7    8B45 FC         MOV EAX,DWORD PTR SS:[EBP-4]
  005C2AFA    E8 85D7EDFF     CALL XVerifie.004A0284
  005C2AFF    EB 3C           JMP SHORT XVerifie.005C2B3D
  005C2B01    6A 10           PUSH 10
  005C2B03    8D55 D0         LEA EDX,DWORD PTR SS:[EBP-30]
  005C2B06    A1 D0955C00     MOV EAX,DWORD PTR DS:[5C95D0]
  005C2B0B    E8 B441E4FF     CALL XVerifie.00406CC4
  005C2B10    8B45 D0         MOV EAX,DWORD PTR SS:[EBP-30]
  005C2B13    E8 8422E4FF     CALL XVerifie.00404D9C
  005C2B18    50              PUSH EAX
  005C2B19    8D55 CC         LEA EDX,DWORD PTR SS:[EBP-34]
  005C2B1C    A1 B4965C00     MOV EAX,DWORD PTR DS:[5C96B4]
  005C2B21    E8 9E41E4FF     CALL XVerifie.00406CC4
  005C2B26    8B45 CC         MOV EAX,DWORD PTR SS:[EBP-34]
  005C2B29    E8 6E22E4FF     CALL XVerifie.00404D9C
  005C2B2E    8BD0            MOV EDX,EAX
  005C2B30    A1 189B5C00     MOV EAX,DWORD PTR DS:[5C9B18]
  005C2B35    8B00            MOV EAX,DWORD PTR DS:[EAX]
  005C2B37    59              POP ECX
  005C2B38    E8 9B0FEEFF     CALL XVerifie.004A3AD8                   ; 错误提示
  005C2B3D    A1 6C995C00     MOV EAX,DWORD PTR DS:[5C996C]
  005C2B42    8B00            MOV EAX,DWORD PTR DS:[EAX]
  005C2B44    8B80 44030000   MOV EAX,DWORD PTR DS:[EAX+344]
  005C2B4A    FF70 48         PUSH DWORD PTR DS:[EAX+48]
  005C2B4D    68 E42B5C00     PUSH XVerifie.005C2BE4
  005C2B52    A1 6C995C00     MOV EAX,DWORD PTR DS:[5C996C]
  005C2B57    8B00            MOV EAX,DWORD PTR DS:[EAX]
  005C2B59    8B80 44030000   MOV EAX,DWORD PTR DS:[EAX+344]
  005C2B5F    FF70 5C         PUSH DWORD PTR DS:[EAX+5C]
  005C2B62    8D45 C8         LEA EAX,DWORD PTR SS:[EBP-38]
  005C2B65    BA 03000000     MOV EDX,3
  005C2B6A    E8 F520E4FF     CALL XVerifie.00404C64
  005C2B6F    8B45 C8         MOV EAX,DWORD PTR SS:[EBP-38]
  005C2B72    8B15 3C975C00   MOV EDX,DWORD PTR DS:[5C973C]            ; XVerifie.005CCFB8
  005C2B78    8A12            MOV DL,BYTE PTR DS:[EDX]
  005C2B7A    E8 5553FFFF     CALL XVerifie.005B7ED4
  005C2B7F    33C0            XOR EAX,EAX
  005C2B81    5A              POP EDX
  005C2B82    59              POP ECX
  005C2B83    59              POP ECX
  005C2B84    64:8910         MOV DWORD PTR FS:[EAX],EDX
  005C2B87    68 D62B5C00     PUSH XVerifie.005C2BD6
  005C2B8C    8D45 C8         LEA EAX,DWORD PTR SS:[EBP-38]
  005C2B8F    BA 05000000     MOV EDX,5
  005C2B94    E8 4B1DE4FF     CALL XVerifie.004048E4
  005C2B99    8D45 DC         LEA EAX,DWORD PTR SS:[EBP-24]
  005C2B9C    BA 02000000     MOV EDX,2
  005C2BA1    E8 3E1DE4FF     CALL XVerifie.004048E4
  005C2BA6    8D45 E4         LEA EAX,DWORD PTR SS:[EBP-1C]
  005C2BA9    E8 121DE4FF     CALL XVerifie.004048C0
  005C2BAE    8D45 E8         LEA EAX,DWORD PTR SS:[EBP-18]
  005C2BB1    E8 0A1DE4FF     CALL XVerifie.004048C0
  005C2BB6    8D45 EC         LEA EAX,DWORD PTR SS:[EBP-14]
  005C2BB9    E8 021DE4FF     CALL XVerifie.004048C0
  005C2BBE    8D45 F0         LEA EAX,DWORD PTR SS:[EBP-10]
  005C2BC1    E8 FA1CE4FF     CALL XVerifie.004048C0
  005C2BC6    8D45 F4         LEA EAX,DWORD PTR SS:[EBP-C]
  005C2BC9    E8 F21CE4FF     CALL XVerifie.004048C0
  005C2BCE    C3              RETN
  005C2BCF  ^ E9 AC15E4FF     JMP XVerifie.00404180
  005C2BD4  ^ EB B6           JMP SHORT XVerifie.005C2B8C
  005C2BD6    8BE5            MOV ESP,EBP
  005C2BD8    5D              POP EBP
  005C2BD9    C3              RETN

  
进入 005C2A8E
  
  00569DE8    55              PUSH EBP
  00569DE9    8BEC            MOV EBP,ESP
  00569DEB    83C4 E8         ADD ESP,-18
  00569DEE    53              PUSH EBX
  00569DEF    33DB            XOR EBX,EBX
  00569DF1    895D E8         MOV DWORD PTR SS:[EBP-18],EBX
  00569DF4    895D EC         MOV DWORD PTR SS:[EBP-14],EBX
  00569DF7    894D F4         MOV DWORD PTR SS:[EBP-C],ECX
  00569DFA    8955 F8         MOV DWORD PTR SS:[EBP-8],EDX
  00569DFD    8945 FC         MOV DWORD PTR SS:[EBP-4],EAX
  00569E00    8B45 F8         MOV EAX,DWORD PTR SS:[EBP-8]
  00569E03    E8 84AFE9FF     CALL XVerifie.00404D8C
  00569E08    8B45 F4         MOV EAX,DWORD PTR SS:[EBP-C]
  00569E0B    E8 7CAFE9FF     CALL XVerifie.00404D8C
  00569E10    8B45 08         MOV EAX,DWORD PTR SS:[EBP+8]
  00569E13    E8 74AFE9FF     CALL XVerifie.00404D8C
  00569E18    33C0            XOR EAX,EAX
  00569E1A    55              PUSH EBP
  00569E1B    68 F79E5600     PUSH XVerifie.00569EF7
  00569E20    64:FF30         PUSH DWORD PTR FS:[EAX]
  00569E23    64:8920         MOV DWORD PTR FS:[EAX],ESP
  00569E26    8B45 F8         MOV EAX,DWORD PTR SS:[EBP-8]
  00569E29    E8 76ADE9FF     CALL XVerifie.00404BA4
  00569E2E    8B55 FC         MOV EDX,DWORD PTR SS:[EBP-4]
  00569E31    3B42 4C         CMP EAX,DWORD PTR DS:[EDX+4C]            ; 用户名位数必须小于64H
  00569E34    7F 1C           JG SHORT XVerifie.00569E52
  00569E36    8B45 F8         MOV EAX,DWORD PTR SS:[EBP-8]
  00569E39    E8 66ADE9FF     CALL XVerifie.00404BA4
  00569E3E    8B55 FC         MOV EDX,DWORD PTR SS:[EBP-4]
  00569E41    3B42 50         CMP EAX,DWORD PTR DS:[EDX+50]            ; 用户名位数必须大于等于3
  00569E44    7C 0C           JL SHORT XVerifie.00569E52
  00569E46    8B45 08         MOV EAX,DWORD PTR SS:[EBP+8]
  00569E49    E8 56ADE9FF     CALL XVerifie.00404BA4
  00569E4E    85C0            TEST EAX,EAX
  00569E50    75 06           JNZ SHORT XVerifie.00569E58
  00569E52    C645 F3 00      MOV BYTE PTR SS:[EBP-D],0
  00569E56    EB 6F           JMP SHORT XVerifie.00569EC7
  00569E58    8D55 EC         LEA EDX,DWORD PTR SS:[EBP-14]
  00569E5B    8B45 08         MOV EAX,DWORD PTR SS:[EBP+8]
  00569E5E    E8 59F2E9FF     CALL XVerifie.004090BC
  00569E63    8B55 EC         MOV EDX,DWORD PTR SS:[EBP-14]
  00569E66    8D45 08         LEA EAX,DWORD PTR SS:[EBP+8]
  00569E69    E8 EAAAE9FF     CALL XVerifie.00404958
  00569E6E    8D4D E8         LEA ECX,DWORD PTR SS:[EBP-18]
  00569E71    8B55 F8         MOV EDX,DWORD PTR SS:[EBP-8]
  00569E74    8B45 FC         MOV EAX,DWORD PTR SS:[EBP-4]
  00569E77    E8 D4FBFFFF     CALL XVerifie.00569A50                   ; 经过此CALL后出现真码,F7进去
  00569E7C    8B45 E8         MOV EAX,DWORD PTR SS:[EBP-18]
  00569E7F    8B55 08         MOV EDX,DWORD PTR SS:[EBP+8]
  00569E82    E8 ADF2E9FF     CALL XVerifie.00409134                   ; 真假码比较
  00569E87    85C0            TEST EAX,EAX
  00569E89    74 06           JE SHORT XVerifie.00569E91               ; 关键跳转
  00569E8B    C645 F3 00      MOV BYTE PTR SS:[EBP-D],0
  00569E8F    EB 36           JMP SHORT XVerifie.00569EC7
  00569E91    8B45 FC         MOV EAX,DWORD PTR SS:[EBP-4]
  00569E94    83C0 48         ADD EAX,48
  00569E97    8B55 F8         MOV EDX,DWORD PTR SS:[EBP-8]
  00569E9A    E8 75AAE9FF     CALL XVerifie.00404914
  00569E9F    8B45 FC         MOV EAX,DWORD PTR SS:[EBP-4]
  00569EA2    83C0 54         ADD EAX,54
  00569EA5    8B55 F4         MOV EDX,DWORD PTR SS:[EBP-C]
  00569EA8    E8 67AAE9FF     CALL XVerifie.00404914
  00569EAD    8B45 FC         MOV EAX,DWORD PTR SS:[EBP-4]
  00569EB0    83C0 5C         ADD EAX,5C
  00569EB3    8B55 08         MOV EDX,DWORD PTR SS:[EBP+8]
  00569EB6    E8 59AAE9FF     CALL XVerifie.00404914
  00569EBB    8B45 FC         MOV EAX,DWORD PTR SS:[EBP-4]
  00569EBE    E8 49020000     CALL XVerifie.0056A10C
  00569EC3    C645 F3 01      MOV BYTE PTR SS:[EBP-D],1
  00569EC7    33C0            XOR EAX,EAX
  00569EC9    5A              POP EDX
  00569ECA    59              POP ECX
  00569ECB    59              POP ECX
  00569ECC    64:8910         MOV DWORD PTR FS:[EAX],EDX
  00569ECF    68 FE9E5600     PUSH XVerifie.00569EFE
  00569ED4    8D45 E8         LEA EAX,DWORD PTR SS:[EBP-18]
  00569ED7    BA 02000000     MOV EDX,2
  00569EDC    E8 03AAE9FF     CALL XVerifie.004048E4
  00569EE1    8D45 F4         LEA EAX,DWORD PTR SS:[EBP-C]
  00569EE4    BA 02000000     MOV EDX,2
  00569EE9    E8 F6A9E9FF     CALL XVerifie.004048E4
  00569EEE    8D45 08         LEA EAX,DWORD PTR SS:[EBP+8]
  00569EF1    E8 CAA9E9FF     CALL XVerifie.004048C0
  00569EF6    C3              RETN
  00569EF7  ^ E9 84A2E9FF     JMP XVerifie.00404180
  00569EFC  ^ EB D6           JMP SHORT XVerifie.00569ED4
  00569EFE    8A45 F3         MOV AL,BYTE PTR SS:[EBP-D]
  00569F01    5B              POP EBX
  00569F02    8BE5            MOV ESP,EBP
  00569F04    5D              POP EBP
  00569F05    C2 0400         RETN 4

  
进入 00569E77
  
  00569A50    55              PUSH EBP
  00569A51    8BEC            MOV EBP,ESP
  00569A53    83C4 DC         ADD ESP,-24
  00569A56    53              PUSH EBX
  00569A57    33DB            XOR EBX,EBX
  00569A59    895D DC         MOV DWORD PTR SS:[EBP-24],EBX
  00569A5C    895D E8         MOV DWORD PTR SS:[EBP-18],EBX
  00569A5F    894D F4         MOV DWORD PTR SS:[EBP-C],ECX
  00569A62    8955 F8         MOV DWORD PTR SS:[EBP-8],EDX
  00569A65    8945 FC         MOV DWORD PTR SS:[EBP-4],EAX
  00569A68    8B45 F8         MOV EAX,DWORD PTR SS:[EBP-8]
  00569A6B    E8 1CB3E9FF     CALL XVerifie.00404D8C
  00569A70    33C0            XOR EAX,EAX
  00569A72    55              PUSH EBP
  00569A73    68 8E9B5600     PUSH XVerifie.00569B8E
  00569A78    64:FF30         PUSH DWORD PTR FS:[EAX]
  00569A7B    64:8920         MOV DWORD PTR FS:[EAX],ESP
  00569A7E    8B45 F8         MOV EAX,DWORD PTR SS:[EBP-8]
  00569A81    E8 1EB1E9FF     CALL XVerifie.00404BA4
  00569A86    8B55 FC         MOV EDX,DWORD PTR SS:[EBP-4]
  00569A89    3B42 4C         CMP EAX,DWORD PTR DS:[EDX+4C]            ; 用户名位数小于64H
  00569A8C    7F 10           JG SHORT XVerifie.00569A9E
  00569A8E    8B45 F8         MOV EAX,DWORD PTR SS:[EBP-8]
  00569A91    E8 0EB1E9FF     CALL XVerifie.00404BA4
  00569A96    8B55 FC         MOV EDX,DWORD PTR SS:[EBP-4]
  00569A99    3B42 50         CMP EAX,DWORD PTR DS:[EDX+50]            ; 用户名位数大于等于3
  00569A9C    7D 0D           JGE SHORT XVerifie.00569AAB
  00569A9E    8B45 F4         MOV EAX,DWORD PTR SS:[EBP-C]
  00569AA1    E8 1AAEE9FF     CALL XVerifie.004048C0
  00569AA6    E9 BD000000     JMP XVerifie.00569B68
  00569AAB    8B45 F8         MOV EAX,DWORD PTR SS:[EBP-8]
  00569AAE    E8 F1B0E9FF     CALL XVerifie.00404BA4
  00569AB3    8945 F0         MOV DWORD PTR SS:[EBP-10],EAX
  00569AB6    EB 39           JMP SHORT XVerifie.00569AF1
  00569AB8    8B45 F8         MOV EAX,DWORD PTR SS:[EBP-8]
  00569ABB    8B55 F0         MOV EDX,DWORD PTR SS:[EBP-10]
  00569ABE    8A4410 FF       MOV AL,BYTE PTR DS:[EAX+EDX-1]           ; 从右至左依次用户名ASCII
  00569AC2    25 FF000000     AND EAX,0FF
  00569AC7    33D2            XOR EDX,EDX
  00569AC9    52              PUSH EDX
  00569ACA    50              PUSH EAX
  00569ACB    8B45 FC         MOV EAX,DWORD PTR SS:[EBP-4]
  00569ACE    8B50 6C         MOV EDX,DWORD PTR DS:[EAX+6C]
  00569AD1    8B40 68         MOV EAX,DWORD PTR DS:[EAX+68]
  00569AD4    E8 0BC0E9FF     CALL XVerifie.00405AE4                   ; 分别被常数 04B234EEH 取余
  00569AD9    52              PUSH EDX
  00569ADA    50              PUSH EAX
  00569ADB    8D45 DC         LEA EAX,DWORD PTR SS:[EBP-24]
  00569ADE    E8 21FDE9FF     CALL XVerifie.00409804                   ; 转10进制
  00569AE3    8B55 DC         MOV EDX,DWORD PTR SS:[EBP-24]
  00569AE6    8D45 E8         LEA EAX,DWORD PTR SS:[EBP-18]
  00569AE9    E8 BEB0E9FF     CALL XVerifie.00404BAC
  00569AEE    FF4D F0         DEC DWORD PTR SS:[EBP-10]
  00569AF1    8B45 F8         MOV EAX,DWORD PTR SS:[EBP-8]
  00569AF4    E8 ABB0E9FF     CALL XVerifie.00404BA4
  00569AF9    83E8 06         SUB EAX,6
  00569AFC    3B45 F0         CMP EAX,DWORD PTR SS:[EBP-10]
  00569AFF    7F 06           JG SHORT XVerifie.00569B07
  00569B01    837D F0 00      CMP DWORD PTR SS:[EBP-10],0              ; 控制循环,从右至左取7位(如果够7位的话)
  00569B05  ^ 7F B1           JG SHORT XVerifie.00569AB8
  00569B07    8D55 EC         LEA EDX,DWORD PTR SS:[EBP-14]
  00569B0A    8B45 E8         MOV EAX,DWORD PTR SS:[EBP-18]            ; 连接上面得到的(小于等于)7组数字,作为一个10进制整数,设为sn1
  00569B0D    E8 DEC0E9FF     CALL XVerifie.00405BF0
  00569B12    8945 E0         MOV DWORD PTR SS:[EBP-20],EAX
  00569B15    8955 E4         MOV DWORD PTR SS:[EBP-1C],EDX
  00569B18    8B45 FC         MOV EAX,DWORD PTR SS:[EBP-4]
  00569B1B    8378 60 00      CMP DWORD PTR DS:[EAX+60],0
  00569B1F    7F 12           JG SHORT XVerifie.00569B33
  00569B21    FF75 E4         PUSH DWORD PTR SS:[EBP-1C]
  00569B24    FF75 E0         PUSH DWORD PTR SS:[EBP-20]
  00569B27    8B55 F4         MOV EDX,DWORD PTR SS:[EBP-C]
  00569B2A    33C0            XOR EAX,EAX
  00569B2C    E8 43FDE9FF     CALL XVerifie.00409874
  00569B31    EB 35           JMP SHORT XVerifie.00569B68
  00569B33    FF75 E4         PUSH DWORD PTR SS:[EBP-1C]
  00569B36    FF75 E0         PUSH DWORD PTR SS:[EBP-20]
  00569B39    8B55 F4         MOV EDX,DWORD PTR SS:[EBP-C]
  00569B3C    8B45 FC         MOV EAX,DWORD PTR SS:[EBP-4]
  00569B3F    8B40 60         MOV EAX,DWORD PTR DS:[EAX+60]
  00569B42    E8 2DFDE9FF     CALL XVerifie.00409874
  00569B47    8B45 F4         MOV EAX,DWORD PTR SS:[EBP-C]
  00569B4A    8B00            MOV EAX,DWORD PTR DS:[EAX]               ; 将上面得到的sn1转换成16进制(若不足12位,则前面补0至12位),设为sn2(最终注册码)
  00569B4C    E8 53B0E9FF     CALL XVerifie.00404BA4
  00569B51    8BC8            MOV ECX,EAX
  00569B53    8B45 FC         MOV EAX,DWORD PTR SS:[EBP-4]
  00569B56    2B48 60         SUB ECX,DWORD PTR DS:[EAX+60]
  00569B59    8B45 FC         MOV EAX,DWORD PTR SS:[EBP-4]
  00569B5C    8B50 60         MOV EDX,DWORD PTR DS:[EAX+60]
  00569B5F    42              INC EDX
  00569B60    8B45 F4         MOV EAX,DWORD PTR SS:[EBP-C]
  00569B63    E8 D4B2E9FF     CALL XVerifie.00404E3C
  00569B68    33C0            XOR EAX,EAX
  00569B6A    5A              POP EDX
  00569B6B    59              POP ECX
  00569B6C    59              POP ECX
  00569B6D    64:8910         MOV DWORD PTR FS:[EAX],EDX
  00569B70    68 959B5600     PUSH XVerifie.00569B95
  00569B75    8D45 DC         LEA EAX,DWORD PTR SS:[EBP-24]
  00569B78    E8 43ADE9FF     CALL XVerifie.004048C0
  00569B7D    8D45 E8         LEA EAX,DWORD PTR SS:[EBP-18]
  00569B80    E8 3BADE9FF     CALL XVerifie.004048C0
  00569B85    8D45 F8         LEA EAX,DWORD PTR SS:[EBP-8]
  00569B88    E8 33ADE9FF     CALL XVerifie.004048C0
  00569B8D    C3              RETN
  00569B8E  ^ E9 EDA5E9FF     JMP XVerifie.00404180
  00569B93  ^ EB E0           JMP SHORT XVerifie.00569B75
  00569B95    5B              POP EBX
  00569B96    8BE5            MOV ESP,EBP
  00569B98    5D              POP EBP
  00569B99    C3              RETN

  
--------------------------------------------------------------------------------
【算法总结】
  首先用户名长度L必须满足3≤L<100.如果大于7位,则只取后7位.
  从右至左取用户名的ASCII,分别被78787822(04B234EEH)取余,余数依次连接作为一个10进制整数sn1.
  将sn1转成16进制数sn2.若sn2长度不足12,则在其前面补0至12位(最终注册码).
  注册信息以加密的形式保存在注册表中 ~~~
  
  KeyGen核心源码(VB Code):
  
'需要添加一个支持10进制天文数字转16进制的模块.
'两个文本框,一个Command按钮.
Private Sub Command1_Click()
Dim Name, Name1, Name2 As String
Dim L, I As Integer
Dim sn1, sn2 As String
Name = CStr(Text1.Text)
Name1 = StrReverse(Name)
L = Len(Name)
If L < 3 Or L >= 100 Then
   Text2.Text = "用户名位数大于等于3,小于100"
ElseIf L >= 3 And L < 8 Then
   For I = 1 To L
   sn1 = sn1 & (78787822 Mod Asc(Mid(Name1, I, 1)))
   Next I
   sn2 = dectohex(sn1)
   For I = 1 To (12 - Len(sn2))
   sn2 = "0" & sn2
   Next I
   Text2.Text = sn2

Else
   Name2 = Left(Name1, 7)
   For I = 1 To 7
   sn1 = sn1 & (78787822 Mod Asc(Mid(Name2, I, 1)))
   Next I
   sn2 = dectohex(sn1)
   For I = 1 To (12 - Len(sn2))
   sn2 = "0" & sn2
   Next I
   Text2.Text = sn2
   
End If
End Sub

  
附:网上找的一个支持10进制天文数字转16进制的模块代码:

Dim largehex As String, largedec As String, start As Long, Y(20) As String

'预备函数
Function sums(ByVal X As String, ByVal Y As String) As String ' sum of two hugehexnum(两个大数之和)
    Dim max As Long, temp As Long, I As Long, result As Variant
    max = IIf(Len(X) >= Len(Y), Len(X), Len(Y))
    X = Right(String(max, "0") & X, max)
    Y = Right(String(max, "0") & Y, max)
    ReDim result(0 To max)
    For I = max To 1 Step -1
        result(I) = Val(Mid(X, I, 1)) + Val(Mid(Y, I, 1))
    Next
    For I = max To 1 Step -1
        temp = result(I) \ 10
        result(I) = result(I) Mod 10
        result(I - 1) = result(I - 1) + temp
    Next
    If result(0) = 0 Then result(0) = ""
    sums = Join(result, "")
    Erase result

End Function

Function multi(ByVal X As String, ByVal Y As String) As String 'multi of two huge hexnum(两个大数之积)
    Dim result As Variant
    Dim xl As Long, yl As Long, temp As Long, I As Long
    xl = Len(Trim(X))
    yl = Len(Trim(Y))

    ReDim result(1 To xl + yl)
    For I = 1 To xl
        For temp = 1 To yl
            result(I + temp) = result(I + temp) + Val(Mid(X, I, 1)) * Val(Mid(Y, temp, 1))
        Next
    Next

    For I = xl + yl To 2 Step -1
        temp = result(I) \ 10
        result(I) = result(I) Mod 10
        result(I - 1) = result(I - 1) + temp
    Next

    If result(1) = "0" Then result(1) = ""
    multi = Join(result, "")
    Erase result

End Function
Function POWERS(ByVal X As Integer) As String ' GET 16777216^X,ie 16^(6*x)(16777216的X 次方)
    POWERS = 1
    Dim I As Integer
    For I = 1 To X
        POWERS = multi(POWERS, CLng(&H1000000))
    Next
End Function
Function half(ByVal X As String) As String 'get half of x(取半)
    X = 0 & X
    Dim I As Long
    ReDim result(2 To Len(X)) As String
    For I = 2 To Len(X)
        result(I) = CStr(Val(Mid(X, I, 1)) \ 2 + IIf(Val(Mid(X, I - 1, 1)) Mod 2 = 1, 5, 0))
    Next
    half = Join(result, "")
    If Left(half, 1) = "0" Then half = Right(half, Len(half) - 1) ' no zero ahead
End Function

'另一个有用的函数:
Function POWERXY(ByVal X As Integer, ByVal Y As Integer) As String 'GET  X^Y(X 的 Y 次方)
    Dim I As Integer
    POWERXY = X
    For I = 2 To Y
        POWERXY = multi(POWERXY, X)
    Next
End Function

'进制转换函数:

'16 to 10
Function HEXTODEC(ByVal X As String) As String
    Dim A() As String, I As Long, UNIT As Integer
    For I = 1 To Len(X)
        If Not IsNumeric("&h" & Mid(X, I, 1)) Then MsgBox "NOT A HEX FORMAT!", 64, "INFO": Exit Function
    Next
    X = String((6 - Len(X) Mod 6) Mod 6, "0") & X

    UNIT = Len(X) \ 6 - 1
    ReDim A(UNIT)
    For I = 0 To UNIT
        A(I) = CLng("&h" & Mid(X, I * 6 + 1, 6))
    Next
    For I = 0 To UNIT
        A(I) = multi(A(I), POWERS(UNIT - I))
        HEXTODEC = sums(HEXTODEC, A(I))
    Next
End Function

' 10 to 16
Function dectohex(ByVal hugenum As String) As String ' trans hugenum to hex
    Do While Len(hugenum) > 2
        dectohex = Hex(Val(Right(hugenum, 4)) Mod 16) & dectohex
        For I = 1 To 4 'devide hugenum  by 16
            hugenum = half(hugenum)
        Next
    Loop
    dectohex = Hex(Val(hugenum)) & dectohex
End Function

Private Sub Form_Load()
    For I = 0 To 20
        Y(I) = "1234567890ABCDEF"
    Next

    largehex = Join(Y, "")
End Sub

--------------------------------------------------------------------------------
【版权声明】: 本文由 蚊香 原创,转载请注明作者并保持文章的完整,谢谢!

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向蚊香大侠学习
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support.

建议文章设置精华.
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拜读一下高人文章
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绝对新手~~~ 楼上两位才是大虾
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算法----我心中永远的痛

学习了
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很好,学习了。
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很好 虽然看不懂 但是谢谢了
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