软件名称:ColorPicker V2.06 难度:易 破解工具:AspackDie,TRW2000,Winasm
Fi一看是Aspack的壳,AspackDie脱之。Winasm查找字符串"The Registration information is invaild!Please recheck your information." 一查看他的跳转处来到::004A0338 8D45DC lea eax, dword ptr [ebp-24] :004A033B 50 push eax :004A033C 8B4DF8 mov ecx, dword ptr [ebp-08] :004A033F BA2E391E00 mov edx, 001E392E :004A0344 8B45FC mov eax, dword ptr [ebp-04] :004A0347 E88C020000 call 004A05D8 ********关键处call :004A034C 8B55DC mov edx, dword ptr [ebp-24] :004A034F 8B45F4 mov eax, dword ptr [ebp-0C] :004A0352 E86945F6FF call 004048C0 :004A0357 0F8541010000 jne 004A049E 〈==跳到出错处 跟进004A0347关键call处: 以下是算法关键处: :004A0630 BF01000000 mov edi, 00000001 〈==edi这个计数器赋初值 * Referenced by a (U)nconditional or (C)onditional Jump at Address: :004A0654(C)
:004A0635 8B45F8 mov eax, dword ptr [ebp-08] 〈==指向用户名 :004A0638 E83F41F6FF call 0040477C 〈==取用户名长度 * Referenced by a (U)nconditional or (C)onditional Jump at Address: :004A05D2(C)
:004A063D F76DFC imul [ebp-04] 〈==用户名长度乘以0x1E392E
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