NodeJS Express

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

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

Custom wordlist

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

Test multiple cookies using batch mode

bash
cookie-monster -b -f cookies.json

Test multiple cookies using batch mode with a custom wordlist

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

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

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