2017-11-02.md

Codificar en distintos sistemas

Convertir en Bases

• https://www.jesusninoc.com/2017/03/04/convertir-un-numero-decimal-a-binario/
• https://www.jesusninoc.com/2017/05/25/convertir-un-numero-binario-a-decimal/
• https://www.jesusninoc.com/2017/01/25/convertir-a-binario-las-direcciones-mac-de-los-dispositivos-de-red/

En linux

echo "obase=2;3" | bc

Ejecutar un código que se ha codificado en Base64

• https://www.jesusninoc.com/2015/10/05/convert-base64-to-string/
• https://www.jesusninoc.com/2016/11/23/ejecutar-powershell-como-administrador-en-base64/

Más conversión

[System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes('ls *.txt | %{$_;gc $_  | Select-String "seña"}')) | clip

$decimal = 32
[Convert]::ToString($decimal, 2)

$bit = 3
$decimal = $decimal -bor [Math]::Pow(2, $bit)
[Convert]::ToString($decimal, 2)

#Convertir a Braille
$outFile = "Braille" + (Get-Date -UFormat %Y%m%d_%H%M%S) + ".jpg"
Set-Content -Path $outFile -Value (New-WebServiceProxy -uri "https://www.webservicex.net/braille.asmx?WSDL").BrailleText('hi',80) -Encoding Byte

#Base64 ejecución remota
([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('KABuAGUAdABzAGgAIAB3AGwAYQBuACAAcwBoAG8AdwAgAGkAbgB0AGUAcgBmAGEAYwBlACAAfAAgAFMAZQBsAGUAYwB0AC0AUwB0AHIAaQBuAGcAIABTAFMASQBEACkAWwAwAF0AIAB8ACAAJQB7AFsAUwB0AHIAaQBuAGcAXQAkAFMAUwBJAEQAPQAkAF8
AOwAkAFMAUwBJAEQAPQAkAFMAUwBJAEQALgByAGUAcABsAGEAYwBlACgAIgBTAFMASQBEACIALAAiACIAKQAuAHIAZQBwAGwAYQBjAGUAKAAiADoAIgAsACIAIgApAC4AdAByAGkAbQAoACkAOwAkAFMAUwBJAEQAOwBuAGUAdABzAGgAIAB3AGwAYQBuAC
AAcwBoAG8AdwAgAHAAcgBvAGYAaQBsAGUAIABuAGEAbQBlAD0AJABTAFMASQBEACAAawBlAHkAPQBjAGwAZQBhAHIAIAB8ACAAUwBlAGwAZQBjAHQALQBTAHQAcgBpAG4AZwAgACcAQwBvAG4AdABlAG4AaQBkAG8AIABkAGUAIABsAGEAIABjAGwAYQB2A
GUAJwA7AH0A')))

#Detectar una cadena en un fichero
ls *.txt | %{$_;gc $_  | Select-String "seña"}