HackTricksNodeJS Express
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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
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
Encode and sign a new cookie
iI you know the secret you can sign a the cookie.
bash
cookie-monster -e -f new_cookie.json -k secret
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