NodeJS Express - HackTricks

# NodeJS Express

## Cookie Signature

The tool https://github.com/DigitalInterruption/cookie-monster is a utility for automating the testing and re-signing of Express.js cookie secrets.

### Single cookie with a specific name

    cookie-monster -c eyJmb28iOiJiYXIifQ== -s LVMVxSNPdU_G8S3mkjlShUD78s4 -n session

### Custom wordlist

    cookie-monster -c eyJmb28iOiJiYXIifQ== -s LVMVxSNPdU_G8S3mkjlShUD78s4 -w custom.lst

### Test multiple cookies using batch mode

    cookie-monster -b -f cookies.json

### Test multiple cookies using batch mode with a custom wordlist

    cookie-monster -b -f cookies.json -w custom.lst

### Encode and sign a new cookie

iI you know the secret you can sign a the cookie.

    cookie-monster -e -f new_cookie.json -k secret