mirror of
https://github.com/takeshixx/redstar-tools
synced 2025-07-17 20:43:21 +00:00
54 lines
1.9 KiB
Markdown
54 lines
1.9 KiB
Markdown
# Tools for Red Star OS (붉은별)
|
|
|
|
This repository includes several binaries from and tools for Red Star OS. These can be used for further research work.
|
|
|
|
## Disable malicious components
|
|
|
|
1. Get root privileges via `/usr/sbin/rootsetting`
|
|
2. Disable SELinux
|
|
|
|
SELinux protects several files an directories (e.g. /var/log). It should be disabled in order to make changes to some parts of the system.
|
|
|
|
setenforce 0
|
|
|
|
In order to keep SELinux disabled after rebooting, append `selinux=0` to the kernel line in the GRUB config file (/boot/grub/grub.conf).
|
|
|
|
3. Kill `securityd`
|
|
|
|
Killing `securityd` will prevent the system from rebooting when editing/deleting various protected files.
|
|
|
|
killall -9 securityd
|
|
|
|
4. Disable `rtscan` kernel module
|
|
|
|
Either via `resctl.py` (see `rtscan`) or via a Python shell as follows:
|
|
|
|
[root@localhost ~]# python
|
|
Python 2.6 (r26:66714, Oct 7 2012, 13:39:47)
|
|
[GCC 4.4.0 20090506 (Red Hat 4.4.0-4)] on linux2
|
|
Type "help", "copyright", "credits" or "license" for more information.
|
|
>>> import fcntl
|
|
>>> fcntl.ioctl(open('/dev/res', 'wb'), 29187)
|
|
0
|
|
|
|
After disabling `rtscan` protected processes like `opprc` will become killable.
|
|
|
|
5. Kill `scnprc` and `opprc`
|
|
|
|
killall scnprc
|
|
killall opprc
|
|
|
|
6. Replace `/usr/lib/libos.so.0.0.0`
|
|
|
|
See `libos` for further information. Replacing this file will prevent the system from rebooting via `securityd` after rebooting the system. It also will prevent reboot loops by `kdm` rendering the system unusable.
|
|
|
|
7. Delete `/usr/share/autostart/scnprc.desktop`
|
|
|
|
Deleting this file will prevent `kdeinit` from starting the framework after a system reboot.
|
|
|
|
8. Reboot the system
|
|
|
|
## Disclaimer
|
|
|
|
All of the information is based on research dedicated to analyzing Red Star OS. The authors take no responsibility for the accuracy, completeness or quality of the information provided.
|