0040649A CALL FREECELL.00438648 ; \FREECELL.00438648
0040649F PUSH EDI ; /Arg3
004064A0 PUSH FREECELL.004541BC ; Arg2 = 004541BC ASCII "RegisterCode"
004064A5 PUSH FREECELL.00454158 ; Arg1 = 00454158 ASCII "Options"
004064AA MOV ECX,ESI ;
004064AC CALL FREECELL.004385D3 ; \FREECELL.004385D3
004064B1 MOV BYTE PTR DS:[ESI+C1],1
004064B8 CALL FREECELL.00435B86
004064BD TEST EAX,EAX
004064BF JE SHORT FREECELL.004064CA
004064C1 MOV EDX,DWORD PTR DS:[EAX]
004064C3 MOV ECX,EAX
004064C5 CALL DWORD PTR DS:[EDX+74]
004064C8 JMP SHORT FREECELL.004064CC
004064CA XOR EAX,EAX
004064CC MOV EAX,DWORD PTR DS:[EAX+1C]
004064CF PUSH 105 ; /Redraw = RDW_INVALIDATERDW_ERASERDW_UPDATENOW
004064D4 PUSH 0 ; hUpdateRgn = NULL
004064D6 PUSH 0 ; pRect = NULL
004064D8 PUSH EAX ; hWnd
004064D9 CALL DWORD PTR DS:[<&USER32.RedrawWi>; \RedrawWindow 重新显示整个窗口，窗口中将显示“本软件注册为: ...”等字样。
-----------------------进入注册码生成过程的CALL中------------------------
00405DB8 MOV ECX,DWORD PTR DS:[EAX-8]
00405DBB MOV ESI,0D431 <---------初始化 ESI
00405DC0 TEST ECX,ECX <---------比较用户名是否为空，ECX中为用户名字串长度。
00405DC2 JLE SHORT FREECELL.00405DF8
00405DC4 / MOVSX EAX,BYTE PTR DS:[EDI+EAX] <--------取出用户名中的一位到EAX
00405DC8 XOR EAX,14142135 <-----对其进行一次异或
00405DCD PUSH EAX <-----将EAX压栈
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