这个CM十分的简单，适合我这样的菜鸟，希望能得到一个邀请码，正式加入看雪学院，在这里学习。
     运行CM，是console的，需要username和password。
     用IDA载入，智能的IDA已经帮我们定位到main函数了。
     下面是关键部分代码：

mov     [esp+58h+var_58], offset aEnterYourLogin ; "Enter your login:"
.text:004012C1                 call    printf
.text:004012C6                 lea     eax, [ebp+var_28]
.text:004012C9                 mov     [esp+58h+var_58], eax
.text:004012CC                 call    gets
.text:004012D1                 mov     [esp+58h+var_58], offset aEnterPassword ; "Enter password:"
.text:004012D8                 call    printf
.text:004012DD                 lea     eax, [ebp+var_2C]
.text:004012E0                 mov     [esp+58h+var_54], eax
.text:004012E4                 mov     [esp+58h+var_58], offset aLd ; "%ld"
.text:004012EB                 call    scanf
.text:004012F0                 mov     [ebp+var_30], 0
.text:004012F7                 lea     eax, [ebp+var_28]
.text:004012FA                 mov     [esp+58h+var_58], eax
.text:004012FD                 call    strlen
.text:00401302                 mov     [ebp+var_30], eax
.text:00401305                 mov     eax, [ebp+var_30]
.text:00401308                 shl     eax, 5
.text:0040130B                 add     eax, 21F911h
.text:00401310                 mov     [ebp+var_30], eax
.text:00401313                 mov     eax, [ebp+var_2C]
.text:00401316                 cmp     eax, [ebp+var_30]
.text:00401319                 jnz     short loc_401329
.text:0040131B                 mov     [esp+58h+var_58], offset aGoodJobNowMake ; "Good job!, now make a keygen\n"
.text:00401322                 call    printf
.text:00401327                 jmp     short loc_401335
.text:00401329 ; ---------------------------------------------------------------------------
.text:00401329
.text:00401329 loc_401329:                             ; CODE XREF: _main+89 j
.text:00401329                 mov     [esp+58h+var_58], offset aKeepTryingYouL ; "Keep trying you'l get it"
.text:00401330                 call    printf
.text:00401335
.text:00401335 loc_401335:                             ; CODE XREF: _main+97 j

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