123456789
You can call the following function:1._start2.main3.hello_ctfshow4.ctfshow('echo /ctfshow_flag')5.print('/ctfshow_flag')6.system('cat /ctfshow_flag')7.puts('/ctfshow_flag')8.exit
4 5 7都是打印路径字符串
只有6是读取文件内容
system()
strcmp