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• Shell
• Inherit
• Shell
• Reverse shell
• File write
• File read
• Upload
• Download
• Library load

Shell

This executable can spawn an interactive system shell.

• Comment

  This requires the name of an installed gem to be provided, e.g., debug is usually installed.

  Unprivileged

  This function can be performed by any unprivileged user.

  gem open -e '/bin/sh -s' debug

  Sudo

  This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.

  Remarks

  If there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....

  gem open -e '/bin/sh -s' debug

Inherit

This executable can inherit functions from another.

• Comment

  This requires the name of an installed gem to be provided, e.g., debug is usually installed.

  Unprivileged

  This function can be performed by any unprivileged user.

  gem open debug

  Sudo

  This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.

  Remarks

  If there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....

  gem open debug

  Functions

  Inherits from vi, thus possibly granting the following functions:

  • Shell
  • File write
  • File read

• Unprivileged

  This function can be performed by any unprivileged user.

  gem build /path/to/script.rb

  Sudo

  This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.

  Remarks

  If there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....

  gem build /path/to/script.rb

  Functions

  Inherits from ruby, thus possibly granting the following functions:

  • Shell
  • Reverse shell
  • File write
  • File read
  • Upload
  • Download
  • Library load

• Unprivileged

  This function can be performed by any unprivileged user.

  gem install --file /path/to/script.rb

  Sudo

  This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.

  Remarks

  If there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....

  gem install --file /path/to/script.rb

  Functions

  Inherits from ruby, thus possibly granting the following functions:

  • Shell
  • Reverse shell
  • File write
  • File read
  • Upload
  • Download
  • Library load

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