Algorithm | Scripting and security

Multimedia Recognition

Dejavu: audio fingerprinting and recognition in Python

(5 votes, average: 3.60 out of 5)

Audio fingerprinting and recognition algorithm implemented in Python, see the explanation here: How it works Dejavu can memorize audio by […]

Automation

VoTT: Visual Object Tagging Tool

(No Ratings Yet)

This tool provides end to end support for generating datasets and validating object detection models from video and image assets. […]

PowerShell

4. Gestión del sistema de archivos en PowerShell (nivel intermedio)

(6 votes, average: 4.33 out of 5)

Discos Discos físicos Información sobre discos físicos Crear una partición Dar formato Discos virtuales Crear discos virtual Montar un disco […]

Cryptography PowerShell Security

PoC para detectar colisión en SHA1 con PowerShell

(2 votes, average: 3.00 out of 5)

#Más información: https://shattered.io/
#https://isc.sans.edu/forums/diary/Practical+collision+attack+against+SHA1/22109/
Start-BitsTransfer "https://shattered.io/static/shattered-1.pdf"
Start-BitsTransfer "https://shattered.io/static/shattered-2.pdf"
Get-FileHash .\shattered-1.pdf -Algorithm SHA1
Get-FileHash .\shattered-2.pdf -Algorithm SHA1

#Más información: https://shattered.io/

#https://isc.sans.edu/forums/diary/Practical+collision+attack+against+SHA1/22109/

Start-BitsTransfer "https://shattered.io/static/shattered-1.pdf"

Start-BitsTransfer "https://shattered.io/static/shattered-2.pdf"

Get-FileHash .\shattered-1.pdf -Algorithm SHA1

Get-FileHash .\shattered-2.pdf -Algorithm SHA1

Cryptography PowerShell Security

Función hash SHA1 sobre un fichero

(1 votes, average: 5.00 out of 5)

Get-FileHash .\fichero1.pdf -Algorithm SHA1

1	Get-FileHash .\fichero1.pdf -Algorithm SHA1

PHP PowerShell Security

Seguridad informática con PowerShell

(2 votes, average: 5.00 out of 5)

Introducción Confidencialidad

#Habilitar BitLocker
Enable-BitLocker -MountPoint "f:" -RecoveryPasswordProtector -UsedSpaceOnly -Verbose

#Deshabilitar BitLocker
Disable-BitLocker -MountPoint "f:"

#Habilitar BitLocker

Enable-BitLocker -MountPoint "f:" -RecoveryPasswordProtector -UsedSpaceOnly -Verbose

#Deshabilitar BitLocker

Disable-BitLocker -MountPoint "f:"

Integridad

#Calcular hash para un archivo
Get-FileHash D:\power\fichero.txt -Algorithm MD5
Get-FileHash D:\power\fichero.txt -Algorithm SHA1
Get-FileHash D:\power\fichero.txt -Algorithm SHA256
Get-FileHash D:\power\fichero.txt -Algorithm SHA384
Get-FileHash D:\power\fichero.txt -Algorithm SHA512
Get-FileHash D:\power\fichero.txt -Algorithm RIPEMD160

#Calcular hash para un archivo

Get-FileHash D:\power\fichero.txt -Algorithm MD5

Get-FileHash D:\power\fichero.txt -Algorithm SHA1

Get-FileHash D:\power\fichero.txt -Algorithm SHA256

Get-FileHash D:\power\fichero.txt -Algorithm SHA384

Get-FileHash D:\power\fichero.txt -Algorithm SHA512

Get-FileHash D:\power\fichero.txt -Algorithm RIPEMD160

Seguridad física Analizar el hardware de los equipos de la empresa

$credenciales=Get-Credential
1..254 | %{
    (Get-WmiObject Win32_AutochkSetting -ComputerName ('192.168.1.'+$_) -Credential $credenciales).SettingID
    (Get-WmiObject Win32_BaseBoard -ComputerName ('192.168.1.'+$_) -Credential $credenciales).Manufacturer
    (Get-WmiObject Win32_BIOS -ComputerName ('192.168.1.'+$_) -Credential $credenciales).Version
    (Get-WmiObject Win32_Bus -ComputerName ('192.168.1.'+$_) -Credential $credenciales).DeviceID
    Get-WmiObject Win32_Processor -ComputerName ('192.168.1.'+$_) -Credential $credenciales
    Get-WmiObject Win32_SystemEnclosure -ComputerName ('192.168.1.'+$_) -Credential $credenciales
    Get-WmiObject Win32_Battery -ComputerName ('192.168.1.'+$_) -Credential $credenciales
    Get-WmiObject Win32_Printer -ComputerName ('192.168.1.'+$_) -Credential $credenciales
}

$credenciales=Get-Credential

1..254 | %{

(Get-WmiObject Win32_AutochkSetting -ComputerName ('192.168.1.'+$_) -Credential $credenciales).SettingID

(Get-WmiObject Win32_BaseBoard -ComputerName ('192.168.1.'+$_) -Credential $credenciales).Manufacturer

(Get-WmiObject Win32_BIOS -ComputerName ('192.168.1.'+$_) -Credential $credenciales).Version

(Get-WmiObject Win32_Bus -ComputerName ('192.168.1.'+$_) -Credential $credenciales).DeviceID

Get-WmiObject Win32_Processor -ComputerName ('192.168.1.'+$_) -Credential $credenciales

Get-WmiObject Win32_SystemEnclosure -ComputerName ('192.168.1.'+$_) -Credential $credenciales

Get-WmiObject Win32_Battery -ComputerName ('192.168.1.'+$_) -Credential $credenciales

Get-WmiObject Win32_Printer -ComputerName ('192.168.1.'+$_) -Credential $credenciales

}

Ver dispositivos conectados […]

Cryptography Forensic analysis PowerShell Security

Integridad

(No Ratings Yet)

#Calcular hash para un archivo
Get-FileHash D:\power\fichero.txt -Algorithm MD5
Get-FileHash D:\power\fichero.txt -Algorithm SHA1
Get-FileHash D:\power\fichero.txt -Algorithm SHA256
Get-FileHash D:\power\fichero.txt -Algorithm SHA384
Get-FileHash D:\power\fichero.txt -Algorithm SHA512
Get-FileHash D:\power\fichero.txt -Algorithm RIPEMD160

#Calcular hash para un archivo

Get-FileHash D:\power\fichero.txt -Algorithm MD5

Get-FileHash D:\power\fichero.txt -Algorithm SHA1

Get-FileHash D:\power\fichero.txt -Algorithm SHA256

Get-FileHash D:\power\fichero.txt -Algorithm SHA384

Get-FileHash D:\power\fichero.txt -Algorithm SHA512

Get-FileHash D:\power\fichero.txt -Algorithm RIPEMD160

Cryptography PowerShell Security

Comprobar si ha cambiado algún fichero utilizando la función hash SHA1

(No Ratings Yet)

#Ejecutar la función hash SHA1 en dos momentos distintos y comparar el contenido para descubrir si se producido algún cambio en alguno de los ficheros
ls D:\power\files | % {Get-FileHash $_.FullName -Algorithm SHA1 | Out-File d:\hash.txt -Append}
ls D:\power\files | % {Get-FileHash $_.FullName -Algorithm SHA1 | Out-File d:\hash1.txt -Append}
Compare-Object -ReferenceObject $(Get-Content D:\hash.txt) -DifferenceObject $(Get-Content D:\hash1.txt)

#Ejecutar la función hash SHA1 en dos momentos distintos y comparar el contenido para descubrir si se producido algún cambio en alguno de los ficheros

ls D:\power\files | % {Get-FileHash $_.FullName -Algorithm SHA1 | Out-File d:\hash.txt -Append}

ls D:\power\files | % {Get-FileHash $_.FullName -Algorithm SHA1 | Out-File d:\hash1.txt -Append}

Compare-Object -ReferenceObject $(Get-Content D:\hash.txt) -DifferenceObject $(Get-Content D:\hash1.txt)

Cryptography PowerShell Security

Ejecutar la función hash SHA1 sobre los ficheros de un directorio y almacenar el resultado en un fichero

(No Ratings Yet)

ls D:\power\files | % {Get-FileHash $_.FullName -Algorithm SHA1 | Out-File d:\hash.txt -Append}

1	ls D:\power\files \| % {Get-FileHash $_.FullName -Algorithm SHA1 \| Out-File d:\hash.txt -Append}

Cryptography PowerShell Security

File hash

(No Ratings Yet)

Get-FileHash F:\power\fichero.txt -Algorithm MD5
Get-FileHash F:\power\fichero.txt -Algorithm SHA1

1 2	Get-FileHash F:\power\fichero.txt -Algorithm MD5 Get-FileHash F:\power\fichero.txt -Algorithm SHA1

Cryptography PowerShell Security

Calculate a hash for a file

(No Ratings Yet)

Get-FileHash F:\fichero.iso -Algorithm SHA384

1	Get-FileHash F:\fichero.iso -Algorithm SHA384

Cryptography Network PowerShell Security Servers Web

Send information between server and clients (read web, encrypt and create HTML)

(3 votes, average: 5.00 out of 5)

Server

#############################
##Server
#############################

#Port server: 5219
$port='5219'

try
{
$Message=''
$endpoint = new-object System.Net.IPEndPoint([ipaddress]::any,$port)
$listener = new-object System.Net.Sockets.TcpListener $EndPoint
$listener.start()
$data = $listener.AcceptTcpClient() # will block here until connection
$bytes = New-Object System.Byte[] 1024
$stream = $data.GetStream()

while (($i = $stream.Read($bytes,0,$bytes.Length)) -ne 0)
{
$EncodedText = New-Object System.Text.ASCIIEncoding
$data = $EncodedText.GetString($bytes,0, $i)
}

$stream.close()
$listener.stop()
}catch [exception]{}

#Simple algorithm to decipher (Convert number of vowels)
for ($i=0; $i -lt $data.Length; $i++)
{
switch ($data[$i])
{
'1' {$Message += 'a'}
'2' {$Message += 'e'}
'3' {$Message += 'i'}
'4' {$Message += 'o'}
'5' {$Message += 'u'}
default {$Message += $data[$i]}
}
}

#Save message
#$Message | Out-File F:\power\html\preba.html
$string='Content: ' +$Message+'' | Out-File F:\power\html\preba.html

#############################

##Server

#############################

#Port server: 5219

$port='5219'

try

{

$Message=''

$endpoint = new-object System.Net.IPEndPoint([ipaddress]::any,$port)

$listener = new-object System.Net.Sockets.TcpListener $EndPoint

$listener.start()

$data = $listener.AcceptTcpClient() # will block here until connection

$bytes = New-Object System.Byte[] 1024

$stream = $data.GetStream()

while (($i = $stream.Read($bytes,0,$bytes.Length)) -ne 0)

{

$EncodedText = New-Object System.Text.ASCIIEncoding

$data = $EncodedText.GetString($bytes,0, $i)

}

$stream.close()

$listener.stop()

}catch [exception]{}

#Simple algorithm to decipher (Convert number of vowels)

for ($i=0; $i -lt $data.Length; $i++)

{

switch ($data[$i])

{

'1' {$Message += 'a'}

'2' {$Message += 'e'}

'3' {$Message += 'i'}

'4' {$Message += 'o'}

'5' {$Message += 'u'}

default {$Message += $data[$i]}

}

#Save message

#$Message | Out-File F:\power\html\preba.html

$string='Content: ' +$Message+'' | Out-File F:\power\html\preba.html

Client

#############################
##Client
#############################

$UTF8 = [System.Text.Encoding]::UTF8
$IP = [System.Net.Dns]::GetHostAddresses('127.0.0.1')
$Message=''

#Read web
$rootDir = 'https://www.jesusninoc.com/'
$contenido = Invoke-WebRequest($rootDir)
$webpagetxt = ‘F:\power\html\prueba.txt’ #Directory save HTML

Start-Sleep 5
$contenido=$contenido.AllElements.innerText

#Connect to port 5219
$Address = [System.Net.IPAddress]::Parse($IP)
$Socket = New-Object System.Net.Sockets.TCPClient($Address,5219)

#Simple algorithm to encrypt (Convert vowels in numbers)
for ($i=0; $i -lt $contenido.Length; $i++)
{
switch ($contenido[$i])
{
'a' {$Message += '1'}
'e' {$Message += '2'}
'i' {$Message += '3'}
'o' {$Message += '4'}
'u' {$Message += '5'}
default {$Message += $contenido[$i]}
}
}

$data = $UTF8.GetBytes($Message)

$Stream = $Socket.GetStream()
$Writer = New-Object System.IO.StreamWriter($Stream)

$Message | %{
$Writer.WriteLine($_)
$Writer.Flush()
}

$Stream.Close()
$Socket.Close()

#############################

##Client

#############################

$UTF8 = [System.Text.Encoding]::UTF8

$IP = [System.Net.Dns]::GetHostAddresses('127.0.0.1')

$Message=''

#Read web

$rootDir = 'https://www.jesusninoc.com/'

$contenido = Invoke-WebRequest($rootDir)

$webpagetxt = ‘F:\power\html\prueba.txt’ #Directory save HTML

Start-Sleep 5

$contenido=$contenido.AllElements.innerText

#Connect to port 5219

$Address = [System.Net.IPAddress]::Parse($IP)

$Socket = New-Object System.Net.Sockets.TCPClient($Address,5219)

#Simple algorithm to encrypt (Convert vowels in numbers)

for ($i=0; $i -lt $contenido.Length; $i++)

{

switch ($contenido[$i])

{

'a' {$Message += '1'}

'e' {$Message += '2'}

'i' {$Message += '3'}

'o' {$Message += '4'}

'u' {$Message += '5'}

default {$Message += $contenido[$i]}

}

$data = $UTF8.GetBytes($Message)

$Stream = $Socket.GetStream()

$Writer = New-Object System.IO.StreamWriter($Stream)

$Message | %{

$Writer.WriteLine($_)

$Writer.Flush()

}

$Stream.Close()

$Socket.Close()