Finger.exe LOLBin, (Sun, Dec 4th)

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Guy’s diary entry “Linux LOLBins Applications Available in Windows” reminded me of another Linux tool that is available on Windows: the ancient finger command.

Here is an example with weather info for the North Pole:

Communication takes place over TCP. Destination port is 79.

The finger.exe command sends the string before the @ sign to the host specified after the @ sign.

finger.exe is not proxy aware, and port 79 is hardcoded inside the finger.exe executable. Not as a number, but as a protocol name (finger) that is defined in the services list (%SystemRoot%system32driversetcservices);


Didier Stevens
Senior handler
Microsoft MVP

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