1.获取name，并判断其长度是否大于等于8，否则将name和serial都置空，接着在获取serial，判断其长度是否大于等于8，否则将serial置空

0040136C  /$  55            push ebp
0040136D  |.  89E5          mov ebp,esp
0040136F  |.  83EC 40       sub esp,0x40
00401372  |.  53            push ebx
00401373  |.  56            push esi                                 ;  figugegl.00402055
00401374  |.  57            push edi
00401375  |.  8D7D C1       lea edi,dword ptr ss:[ebp-0x3F]
00401378  |.  8D35 4C204000 lea esi,dword ptr ds:[0x40204C]
0040137E  |.  B9 09000000   mov ecx,0x9
00401383  |.  F3:A4         rep movs byte ptr es:[edi],byte ptr ds:[>
00401385  |.  6A 20         push 0x20                                ; /Count = 20 (32.)
00401387  |.  8D45 DF       lea eax,dword ptr ss:[ebp-0x21]          ; |
0040138A  |.  50            push eax                                 ; |Buffer = NULL
0040138B  |.  6A 65         push 0x65                                ; |ControlID = 65 (101.)
0040138D  |.  FF75 08       push [arg.1]                             ; |hWnd = 04E6C446
00401390  |.  E8 7F020000   call <jmp.&USER32.GetDlgItemTextA>       ; \GetDlgItemTextA
00401395  |.  89C3          mov ebx,eax
00401397  |.  83FB 08       cmp ebx,0x8
0040139A  |.  7D 1F         jge short figugegl.004013BB
0040139C  |.  6A 00         push 0x0                                 ; /Text = NULL
0040139E  |.  6A 65         push 0x65                                ; |ControlID = 65 (101.)
004013A0  |.  FF75 08       push [arg.1]                             ; |hWnd = 04E6C446
004013A3  |.  E8 60020000   call <jmp.&USER32.SetDlgItemTextA>       ; \SetDlgItemTextA
004013A8  |.  6A 00         push 0x0                                 ; /Text = NULL
004013AA  |.  6A 66         push 0x66                                ; |ControlID = 66 (102.)
004013AC  |.  FF75 08       push [arg.1]                             ; |hWnd = 04E6C446
004013AF  |.  E8 54020000   call <jmp.&USER32.SetDlgItemTextA>       ; \SetDlgItemTextA
004013B4  |.  31C0          xor eax,eax
004013B6  |.  E9 91000000   jmp figugegl.0040144C
004013BB  |>  6A 14         push 0x14                                ; /Count = 14 (20.)
004013BD  |.  8D45 CA       lea eax,dword ptr ss:[ebp-0x36]          ; |
004013C0  |.  50            push eax                                 ; |Buffer = NULL
004013C1  |.  6A 66         push 0x66                                ; |ControlID = 66 (102.)
004013C3  |.  FF75 08       push [arg.1]                             ; |hWnd = 04E6C446
004013C6  |.  E8 49020000   call <jmp.&USER32.GetDlgItemTextA>       ; \GetDlgItemTextA
004013CB  |.  89C3          mov ebx,eax
004013CD  |.  83FB 08       cmp ebx,0x8
004013D0  |.  74 10         je short figugegl.004013E2
004013D2  |.  6A 00         push 0x0                                 ; /Text = NULL
004013D4  |.  6A 66         push 0x66                                ; |ControlID = 66 (102.)
004013D6  |.  FF75 08       push [arg.1]                             ; |hWnd = 04E6C446
004013D9  |.  E8 2A020000   call <jmp.&USER32.SetDlgItemTextA>       ; \SetDlgItemTextA
004013DE  |.  31C0          xor eax,eax
004013E0  |.  EB 6A         jmp short figugegl.0040144C
004013E2  |>  31DB          xor ebx,ebx

2.依次从name和serial中读取字符，并判断serial[i] = ds:[0x402038][name[i]^0x402038][7-i]%8]是否成立；0x402038对应的固定字符串"figugegl"

004013E2  |> \31DB          xor ebx,ebx
004013E4  |>  8B3D 38204000 /mov edi,dword ptr ds:[0x402038]         ;  figugegl
004013EA  |.  0FB6741D CA   |movzx esi,byte ptr ss:[ebp+ebx-0x36]
004013EF  |.  0FB6541D DF   |movzx edx,byte ptr ss:[ebp+ebx-0x21]
004013F4  |.  B9 07000000   |mov ecx,0x7
004013F9  |.  29D9          |sub ecx,ebx
004013FB  |.  0FBE0C0F      |movsx ecx,byte ptr ds:[edi+ecx]
004013FF  |.  89D0          |mov eax,edx
00401401  |.  31C8          |xor eax,ecx
00401403  |.  B9 08000000   |mov ecx,0x8
00401408  |.  99            |cdq
00401409  |.  F7F9          |idiv ecx
0040140B  |.  0FBE3C17      |movsx edi,byte ptr ds:[edi+edx]
0040140F  |.  39FE          |cmp esi,edi                             ;  figugegl.004020B1
00401411  |.  74 1A         |je short figugegl.0040142D
00401413  |.  6A 00         |push 0x0                                ; /Style = MB_OK|MB_APPLMODAL
00401415  |.  FF35 44204000 |push dword ptr ds:[0x402044]            ; |Uuuups...
0040141B  |.  FF35 48204000 |push dword ptr ds:[0x402048]            ; |Something's wrong!
00401421  |.  FF75 08       |push [arg.1]                            ; |hOwner = 00E00CA2 ('-={ figugegl }=- Crackme #3',class='#32770')
00401424  |.  E8 27020000   |call <jmp.&USER32.MessageBoxA>          ; \MessageBoxA
00401429  |.  31C0          |xor eax,eax
0040142B  |.  EB 1F         |jmp short figugegl.0040144C
0040142D  |>  43            |inc ebx
0040142E  |.  83FB 08       |cmp ebx,0x8
00401431  |.^ 7C B1         \jl short figugegl.004013E4
00401433  |.  6A 00         push 0x0                                 ; /Style = MB_OK|MB_APPLMODAL

code计算代码：

#include <iostream>using namespace std;
int main()
{char code[] = "figugegl";char name[] = "zfy1996 ";char serial[9] = {0};for (int i = 0; i < 8; i++){serial[i] = code[(name[i]^ code[7-i])%8];}cout << serial << endl;
}

提供一组code：
Name："zfy1996 "
Serial：“gigggglg”