LinuxCategory

You need a USB stick to put the Windows 10 from the official website image with a size of 5.4 Gb.

Shell
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# woeusb -v --device  Win10_1909_English_x64.iso /dev/sdc --target-filesystem NTFS
trap_return: INFO: returning from process_commandline_parameters
WoeUSB v3.3.1
==============================
determine_target_parameters: Info: Target device is '/dev/sdc'.
determine_target_parameters: Info: Target partition is '/dev/sdc1'.
Mounting source filesystem...
Wiping all existing partition table and filesystem signatures in /dev/sdc...
/dev/sdc: 2 bytes were erased at offset 0x000001fe (dos): 55 aa
/dev/sdc: calling ioctl to re-read partition table: Success
Ensure that /dev/sdc is really wiped...
Creating new partition table on /dev/sdc...
Creating target partition...
Making system realize that partition table has changed...
Wait 3 seconds for block device nodes to populate...
Cluster size has been automatically set to 4096 bytes.
Creating NTFS volume structures.
mkntfs completed successfully. Have a nice day.
--2020-04-02 23:04:52--  https://github.com/pbatard/rufus/raw/master/res/uefi/uefi-ntfs.img
Resolving github.com (github.com)... 140.82.118.4
Connecting to github.com (github.com)|140.82.118.4|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://raw.githubusercontent.com/pbatard/rufus/master/res/uefi/uefi-ntfs.img [following]
--2020-04-02 23:04:52--  https://raw.githubusercontent.com/pbatard/rufus/master/res/uefi/uefi-ntfs.img
Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 151.101.112.133
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|151.101.112.133|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 524288 (512K) [application/octet-stream]
Saving to: ‘/tmp/WoeUSB.o2ZmsU.tempdir/uefi-ntfs.img’
 
uefi-ntfs.img       100%[===================>] 512,00K  1,56MB/s    in 0,3s    
 
2020-04-02 23:04:53 (1,56 MB/s) - ‘/tmp/WoeUSB.o2ZmsU.tempdir/uefi-ntfs.img’ saved [524288/524288]
 
1024+0 records in
1024+0 records out
524288 bytes (524 kB, 512 KiB) copied, 0,214865 s, 2,4 MB/s
Mounting target filesystem...
Applying workaround to prevent 64-bit systems with big primary memory from being unresponsive during copying files.
Copying files from source media...
...
INFO: Copying "./sources/imagingprovider.dll"...
11%
INFO: Copying "./sources/inf/setup.cfg"...
11%
INFO: Copying "./sources/input.dll"...
11%
INFO: Copying "./sources/install.wim"...
11%
...
INFO: Copying "./support/logging/winsetupetw.dll"...
Installing GRUB bootloader for legacy PC booting support...
Installing for i386-pc platform.
...
Warning: command "echo 0 > /proc/sys/vm/dirty_bytes" - returned code  $?
Unmounting and removing "/media/woeusb_source_1585857878_9470"...
Unmounting and removing "/media/woeusb_target_1585857878_9470"...
You may now safely detach the target device
Done :)
The target device should be bootable now

Reboot with the USB stick with the boot set on USB Device and you can install the Windows 10.

Let’s read from a text file named new_file.txt with an assembler program.

Assembly (x86)
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[mythcat@desk fasm]$ vim read_file.fasm
[mythcat@desk fasm]$ ./fasm.x64 read_file.fasm
flat assembler  version 1.73.16  (16384 kilobytes memory, x64)
2 passes, 261 bytes.
[mythcat@desk fasm]$ ./read_file
FASM : Hello, world![mythcat@desk fasm]$

The source code is easy to understand. This source code shows you how you can use a macro for print. The base of this source code use INT 0x80 with a rax register for many functions like… Continue Reading Programming with FASM – the format ELF executable – part 006 .

Let’s write into a text file named new_file.txt with an assembler program. First, you need to create this text file using the command touch.

Assembly (x86)
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[mythcat@desk fasm]$ vim write_file.fasm
[mythcat@desk fasm]$ ./fasm.x64 write_file.fasm
flat assembler  version 1.73.16  (16384 kilobytes memory, x64)
2 passes, 256 bytes.
[mythcat@desk fasm]$ touch new_file.txt
[mythcat@desk fasm]$ cat new_file.txt
[mythcat@desk fasm]$ ./write_file
[mythcat@desk fasm]$ cat new_file.txt
FASM : Hello, world!

The assembler FASM let us to write in the file using the INT 80 and some functions used with rax, rbx, rcx, rdx registers. For… Continue Reading Programming with FASM – the format ELF executable – part 005 .

The tutorial for today is a simple one. I will show you how to delete the file created with in the last tutorial. Let’s create a new file named delete_file.fasm and used to delete the new_file.txt.

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[mythcat@desk ~]$ cd fasm/
[mythcat@desk fasm]$ vim delete_file.fasm
[mythcat@desk fasm]$ ./fasm.x64 delete_file.fasm
flat assembler  version 1.73.16  (16384 kilobytes memory, x64)
2 passes, 170 bytes.
[mythcat@desk fasm]$ ls new_file.txt
new_file.txt
[mythcat@desk fasm]$ ./delete_file
[mythcat@desk fasm]$ ls new_file.txt
ls: cannot access 'new_file.txt': No such file or directory
[mythcat@desk fasm]$

In the file delete_file.fasm I used the int 0x80 and mov rax, 10.… Continue Reading Programming with FASM – the format ELF executable – part 004 .

If you want to learn assembly programming for Windows O.S. or Linux with the Intel C.P.U. then you need the FASM tool and this manual. Today I will show you how to create a file using my Fedora 31 Linux distro and FASM tool. The name of this file will… Continue Reading Programming with FASM – the format ELF executable – part 003 .

This is a common report error and this doesn’t actually refer to the amount of storage space, but to the amount of inotify watches that are available for a given file system Linux show me this:

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(0x7ffedb2c1390) Critical: inotify_add_watch(/home/mythcat/.config/lxqt/lxqt.conf) failed: (No space left on device)
(0x7ffedb2c1390) Critical: inotify_add_watch(/usr/share/icons/breeze/icon-theme.cache) failed: (No space left on device)
(0x7ffedb2c1390) Critical: inotify_add_watch(/home/mythcat/.config/lxqt/lxqt.conf) failed: (No space left on device)
(0x7fffe9047930) Critical: inotify_add_watch(/home/mythcat/.config/lxqt/lxqt.conf) failed: (No space left on device)
(0x7fffe9047930) Critical: inotify_add_watch(/usr/share/icons/breeze/icon-theme.cache) failed: (No space left on device)
(0x7fffe9047930) Critical: inotify_add_watch(/home/mythcat/.config/lxqt/lxqt.conf) failed: (No space left on device)

You can fix with this command:

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echo fs.inotify.max_user_watches=65536 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p

This tool is provided by R-fx Networks.

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[mythcat@desk ~]$ wget http://www.rfxn.com/downloads/maldetect-current.tar.gz
[mythcat@desk ~]$ tar -xf maldetect-current.tar.gz
[mythcat@desk ~]$ cd maldetect-1.6.4/
[mythcat@desk maldetect-1.6.4]$ su
Password:
[root@desk maldetect-1.6.4]# ./install.sh
Failed to enable unit: Unit file maldet.service does not exist.
Linux Malware Detect v1.6.4
            (C) 2002-2019, R-fx Networks <proj@r-fx.org>
            (C) 2019, Ryan MacDonald <ryan@r-fx.org>
This program may be freely redistributed under the terms of the GNU GPL
 
installation completed to /usr/local/maldetect
config file: /usr/local/maldetect/conf.maldet
exec file: /usr/local/maldetect/maldet
exec link: /usr/local/sbin/maldet
exec link: /usr/local/sbin/lmd
cron.daily: /etc/cron.daily/maldet
maldet(31046): {sigup} performing signature update check...
maldet(31046): {sigup} local signature set is version 201907043616
maldet(31046): {sigup} new signature set 2019081912001 available
maldet(31046): {sigup} downloading https://cdn.rfxn.com/downloads/maldet-sigpack.tgz
maldet(31046): {sigup} downloading https://cdn.rfxn.com/downloads/maldet-cleanv2.tgz
maldet(31046): {sigup} verified md5sum of maldet-sigpack.tgz
maldet(31046): {sigup} unpacked and installed maldet-sigpack.tgz
maldet(31046): {sigup} verified md5sum of maldet-clean.tgz
maldet(31046): {sigup} unpacked and installed maldet-clean.tgz
maldet(31046): {sigup} signature set update completed
maldet(31046): {sigup} 15552 signatures (12740 MD5 | 2035 HEX | 777 YARA | 0 USER)
[root@desk maldetect-1.6.4]# vim /usr/local/maldetect/conf.maldet

Change this row to scan_user_access=1 Now you can run it:

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[mythcat@desk ~]$ /usr/local/sbin/maldet -a

In the last tutorial I wrote about two commands: chcon and restorecon. Today I will show you one list with some of the more commonly used command-line utilities for managing and operating SELinux provided by utilities: by policycoreutils package: fixfiles: Fixes the security context on file systems load_policy: Loads a… Continue Reading SELinux – Commonly used commands.