Network discovery tool in the internet

 censys.io

shodan.io

viz.greynoise.io

zoomeye.org

onyphe.io

wigle.net

intelx.io

fofa.so

hunter.io

zorexeye.com

pulsedive.com

netograph.io

vigilant.pw

pipl.com

abuse.ch

maltiverse.com/search

insecam.org

honeypot low interaction

 https://github.com/OWASP/Python-Honeypot

https://gitlab.com/evilcouncil/http-honeypot

https://tulja.github.io/blogs/2019/08/18/gsocPost.html

HOW TO FOR WORK DHCP IN UBUNTU 22.04

execute: 

 apt install dhcpcd5

after: 

dhcpcd

or 

sudo dhcpcd -k enp0s3 && dhcpcd -n enp0s3 

for set static ip:

root@dlp:~# vi /etc/netplan/00-installer-config.yaml

# enable dhcp4 and comment out static IP related settings

network:

  ethernets:

    enp1s0:

      dhcp4: true

      #addresses: [10.0.0.30/24]

for clear ip address:

ip addr flush dev enp0s3

source:

https://www.server-world.info/en/note?os=Ubuntu_22.04&p=dhcp&f=2

HOW TO INSTALL HONEYPOT METACORTEXX.COM.BR - COWRIE

sudo apt update

cd ~/Downloads

wget http://archive.ubuntu.com/ubuntu/pool/universe/libe/libemu/libemu2_0.2.0+git20120122-1.2build1_amd64.deb http://archive.ubuntu.com/ubuntu/pool/universe/libe/libemu/libemu-dev_0.2.0+git20120122-1.2build1_amd64.deb

sudo apt install ./libemu2_0.2.0+git20120122-1.2build1_amd64.deb ./libemu-dev_0.2.0+git20120122-1.2build1_amd64.deb

wget "metacortexx.com.br/api/script/?text=true&script_id=2" -O deploy.sh && sudo bash deploy.sh metacortexx.com.br c4Debk2G 

if you have error:

'x86_64-linux-gnu-gcc' failed with exit status 1

For Python 2.x use:

sudo apt-get install python-dev

For Python 2.7 use:

sudo apt-get install libffi-dev

For Python 3.x use:

sudo apt-get install python3-dev

or for a specific version of Python 3, replace x with the minor version in

sudo apt-get install python3.x-dev

if you have erro from gpg repository try:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32

source:

https://stackoverflow.com/questions/26053982/setup-script-exited-with-error-command-x86-64-linux-gnu-gcc-failed-with-exit

https://chrisjean.com/fix-apt-get-update-the-following-signatures-couldnt-be-verified-because-the-public-key-is-not-available/

HOW TO INSTALL (MHN - Modern Honey Network) IN UBUNTU 22.04

 

add in /etc/apt/sources.list the repo:

deb http://cz.archive.ubuntu.com/ubuntu focal main universe

after download by git hub repository the files cloned:

$ cd /opt/
$ sudo git clone https://github.com/pwnlandia/mhn.git
$ cd mhn/

locally in your computer, execute this procedure:

edit the file "/scripts/install_mongo.sh" 

line 15:
from:
elif [ "$(lsb_release -r -s)" == "18.04" ]; then
for:
elif [ "$(lsb_release -r -s)" == "22.04" ]; then

after that install:
python2-dev python2 python-dev-is-python3

SOURCE:

https://github.com/pwnlandia/mhn

how to install openvas community 22.4 and fix https access and access from the internal network not 127.0.0.1

 You dont find this procedure described from greenbone installation procedure, than for help you in detail the exact point that you need change the configuration of procedure and provide access from:

1) access by https (https:<you greenbone server>)
2) access from internal network and not only 127.0.0.1

execute this configuration in you greenbone server:

# Generate GVM certificates for HTTPS

sudo -u gvm gvm-manage-certs -a

so, during execution this procedure from greenbone installation procedure:

than, change  the line with blue marker for:

1) will possibility access from the any place:

ExecStart=/usr/local/sbin/gsad --foreground --listen=0.0.0.0 --port=9392 --http-only

2) will possibility access from the any place and work by https

ExecStart=/usr/local/sbin/gsad --foreground --listen=0.0.0.0 --port=9392 --https

Obs, after this configuration, the product, stop to work by http for work only https

source: 

https://greenbone.github.io/docs/latest/

https://www.libellux.com/openvas/#set-up-systemd

https://www.libellux.com/openvas/#configuration-files

https://github.com/libellux/Libellux-Up-and-Running/blob/master/docs/openvas/config/ubuntu-22_04_GVM-22.4.0.sh

how to track binary dependency mapping in linux

 

In this example we looking for binary dependency from software "htop"

First of all, we need execute, which htop for understand where binary is located

now, executing "ldd /usr/bin/htop" is possible see all dependences from htop work

is important understand the dependency becasuse all time during using linux app, we need understand the dependency  that is necessary for fix correcty.

how to fix "Bitnami virtual machine samples" doesn`t start up openssh-server

 bitnami virtual machine sample:

rm -v /etc/ssh/sshd_not_to_be_run

sudo service sshd restart

source:

https://bitnami.com/

How to define timezone in ubuntu

 excute this command for list the actually time zone:

timedatectl

after that, list the right timezone for set what should be use:

timedatectl list-timezones

after that, set the rith time zone:

timedatectl set-timezone America/Sao_Paulo

After that execute ntp on following command bellow:

timedatectl set-ntp on

Extend boot partition - ubuntu 22.04

 #before you start, resize the fisical disk first or in virtual environment (vmware, virtualbox, etcc...)

#first, execute:

fdisk -l command

#after execute:

df -h

or

ls /sys/class/scsi_device/

or

echo 1 > /sys/class/scsi_device/2\:0\:0\:0/device/rescan

echo 1 > /sys/class/scsi_device/3\:0\:0\:0/device/rescan

echo 1 > /sys/class/scsi_device/32\:0\:0\:0/device/rescan

#Use cfdisk to extend boot partition,select it, (/dev/sda3 in my case) and select “Resize” Click enter, new size is shown

#Then select “Write”, when prompted, type “Yes”, and then select “Quit” and press Enter

#With fdisk -l /dev/sda, make sure partition is extended

#Next, let’s run parted and resize a partition

#in parted execute:

(parted) print

(parted) resizepart

(parted) quit

#Next, resize the physical volume:

pvresize /dev/sda3

#Now, extend the logical volume:

lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv

#Finally, run resize2fs to apply the changes:

resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv

#Verify changes: 

df -h 

#partition is extended from (size before) to (new size)

references:

https://geekdudes.wordpress.com/2021/04/09/ubuntu-20-04-extend-boot-partition/