Linux System Password hack

(i) CentOS Linux system password cracking

1. Press E to enter edit mode on the GRUB Options menu
2. Edit Kernel line/init 1 (or/single)
3. Press B to restart
4. After entering, execute the following command
[Email protected] #passwd root (set root password)
Enter new UNIX password: Enter the password
[Email protected] #init 6

(ii) Ubuntu & Debian Linux system password cracking

1. In the Grub Options menu ' Debian gnu/linux,... (recovery mode) ', press E to enter edit mode

2. Edit kernel the last RO single to RW single init=/bin/bash, press B to perform the restart

3. After entering, execute the following command

[Email protected] (none) #mount-A

[Email protected] (none) #passwdroot

[Email protected] (none) #reboot

(iii) FREEBSD system password cracking

1. Booting into the boot menu

2. Select each item (press 4) to enter single user mode

3. Enter a list of commands after entering

[Email protected] #mount-A

[Email protected] #fsck-y

[Email protected] #passwd (change password command)

[Email protected] #root (username to crack the password)

Enter New UNIX Password:

[Email protected] #init6 (restart)

(iv) Solaris system password cracking

1. Select the Solaris FAILASFE entry in the Grub Options menu

2. Is the system prompt does wish to has it mounted read-write on/a? [Y,n,?] Select Y

3. Enter single-user mode

4. Enter the following command

#passwd

#New passwd: Enter a new password

#Re-enter New passwd: Enter the password in the second

#init 6 (restart)

(v) NETBSD system password hack

1. Power on: When the prompt sign appears and start the countdown for five seconds, type the following command:

> boot-s (enter single-user mode command)

2. In the following hint symbol

Enter pathname of shell or RETURN for SH:

Press Enter.

3. Type the following command:

# mount-a

# fsck-y

4. Use passwd to change the root password.

Linux System Password hack