爆破注册机
之前由于需要用mathematica进行微分方程的模拟，所以需要mathematica12.1的注册码，于是找到了注册机，结果这个注册机居然需要密码！！
注册机是个windows平台下64位的命令行程序，打开后显示
This keygen is locked. Enter password to unlock:
就很离谱
想着好久没玩过逆向了，就下载x64dbg打开看看。
好家伙，完全没有加壳和混淆，直接就找到关键跳转，然后改变zf标志位就绕过了密码输入，成功得到注册码
btw 由于最近比较忙，爆破完简单看了下算法就没看了。如果有时间，尝试写一个注册机的注册机-……-
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