Category: Package

Extreme PowerShell Obfuscation

We recently stumbled upon an old article by Daisuke Mutaguchi explaining an extreme technique for PowerShell obfuscation. The article is in Japanese, so you may have to use Google translate.

Here’s the final example provided by the author of the article:

${;}=+$();${=}=${;};${+}=++${;};${@}=++${;};${.}=++${;};${[}=++${;};
${]}=++${;};${(}=++${;};${)}=++${;};${&}=++${;};${|}=++${;};
${"}="["+"$(@{})"[${)}]+"$(@{})"["${+}${|}"]+"$(@{})"["${@}${=}"]+"$?"[${+}]+"]";
${;}="".("$(@{})"["${+}${[}"]+"$(@{})"["${+}${(}"]+"$(@{})"[${=}]+"$(@{})"[${[}]+"$?"[${+}]+"$(@{})"[${.}]);
${;}="$(@{})"["${+}${[}"]+"$(@{})"[${[}]+"${;}"["${@}${)}"];
"${"}${.}${[}+${"}${)}${@}+${"}${+}${=}${+}+${"}${+}${=}${&}+${"}${+}${=}${&}+${"}${+}${+}${+}+${"}${[}${[}+${"}${.}${@}+${"}${+}${+}${|}+${"}${+}${+}${+}+${"}${+}${+}${[}+${"}${+}${=}${&}+${"}${+}${=}${=}+${"}${.}${.}+${"}${.}${[}|${;}"|&${;};

Yes, this is valid PowerShell.

Although there are limits to static deobfuscation, we decided to see what can be done about this with the new release of our PowerShell Beautifier package.

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CRX Format Package

We have released the “CRX Format” package for all licenses of Cerbero Suite Standard and Advanced. This package provides support for the Chrome extension format.

The package also allows to download Chrome extensions by their public URL.

Chrome extensions can be downloaded either from the main window or from the analysis workspace action.

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