CENTOS7&CENTOS6 root password hack detailed

CENTOS7&CENTOS6 root password hack detailed

When it comes to Linux root login password, I believe that as an operations manager is a sensitive issue, if the administrator forgot the root login password, need to crack the words is and is convenient, not like Windows login password hack, Password hack for Windows login we need to intervene tools to hack, now the most used is the old peaches and other tools. And today we mainly introduce the CENTOS7 and cenos6 password of the hack method. The use of Centos7 children's shoes is experienced, Centos7 and CENTOS6 version of the command is a certain difference, the most significant firewall type, from iptables to Firewalld, such as CENTOS6 restart the service command format for services Iptables stop, and Centos7 's command format is Systemctl stop firewalld.service, such as Centos6 chkconfig off iptables to systemctl disable Firewalld.service, change Chkconfig iptables on to Systemctl enable Firewalld.serivce, of course, crack centos6.x and Centos7 password method is not the same, specifically see below:

The first is the CentOS 6.x root password hack method: Power on Press ESC

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Press "E" to enter edit mode

Then choose kernel/vmlinuz-2.6.32 ... Also press "E" to edit this mode

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After entering edit mode, we enter "simple" or "1" after quiet

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Enter "1" after we return to the edit mode, then we press "B" into the single user mode

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After you press "B" into single-user mode, we can

passwd Root

Change the password.

Enter two times New password enter

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Then we

Reboot

Perform a system restart

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After rebooting, we can log in with a new password

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Next, let's talk about Centos7 's Hack method.

Click on the Boot

Esc

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We move the bottom by moving the anti-directional keyboard

linux16/vmlinuz-3.10.0-229.e17x86_64 root-/dev/mapper/centos-root ro\ rd.lvm.lv-centos/root modified result is Linux16/ vmlinuz-3.10.0-229.e17x86_64 root-/dev/mapper/centos-root RW init=/sysroot/bin/sh rd.lvm.lv-centos/root

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We need to

Ro modified to RM init=/sysroot/bin/sh

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Then we execute

Ctrl+x

Enter single-user mode

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Change the program root directory:

Chroot/sysroot

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Reset Password:

passwd Root

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Update System Information:

Touch/.autorelabel

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Exit Chroot:

Exit

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Restart the system:

Reboot

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Login successful with new password after reboot

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CENTOS7&CENTOS6 root password hack detailed