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打卡一下网鼎杯 太菜了orz 做啥啥不会o(╥﹏╥)o
题目：boom （crypto） 下载是exe文件，运行有三关 1.MD5解密，直接找个网站在线解
2.三元一次方程组
3.一元二次方程，emmm，数字比较大，所以试了一下用网站在线分解
解完得到flag
尝试了一下逆向和pwn，果然是我太菜了，都卡了 555
