duangsuse Puts
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@duangsuse 的强势转载mark

倾向于不适合全部领域人看的内容
可能会有比较底层的知识
基本都是转载mark
@dsuse 技术纯度还高
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[YazawaNico] 第二不要在 grsec 内核进行热替换操作
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[YazawaNico] 因为 grsec 有 chroot 防护措施……
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[YazawaNico] 上次我拷贝完文件系统,然后满屏幕都是无法设置 CAP_SYS_ADMIN 权限,我才意识到发生了什么
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[YazawaNico] 当时我只剩下一个 chroot 终端了
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[YazawaNico] 没办法解除防护
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[YazawaNico] 然后忽然意识到既然文件系统已经拷贝完了,只是有权限问题,为何不退 chroot 用一下刚刚拷贝好的 /sbin/chroot
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[YazawaNico] 退出之后果然啥都 command not found
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[YazawaNico] 然后 source /etc/profile 一下
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[YazawaNico] Shell 就能用了
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[YazawaNico] s/chroot/sysctl
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[YazawaNico] 用 sysctl 关闭防护后 chroot 再来一次
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[YazawaNico] 搞定
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[YazawaNico] 没用
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[YazawaNico] 直接 bash
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[YazawaNico] 完整系统
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(我用的busybox static linking
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[YazawaNico] @rainbow_sea: 你是不是开着一个 busybox 然后自己删自己再复制文件完成的?
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是先把busybox抓出来
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[YazawaNico] 正确的方法应该是准备好 chroot
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[YazawaNico] 然后在 chroot 里用 mount --bind 功能
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然后根目录删剩下chroot目录和busybox