calcand then prints it and pipes it to the standard input of the cmd:
@into the equation:
[email protected]). You can see from the below screenshot that Windows does not recognize such a command
[email protected], but the second attempt when the
%x:@=%removes the extraneous
@symbol from the string, gets executed successfully:
=sign, which is empty in this case, which effectively means - remove @ from the value stored in the variable x.
WindowsPowerShellstring is present in the
PSModuleenvironment variable - this mean we can extract it like so:
set^|findstr PSMto get the PSModulePath variable value
uniquewhich acts like an alphabet. This allows for the FOR loop to cycle through the index, pick out characters from the alphabet pointed to by the index and concatenate them into a final string that eventually gets called with
CALL %final%when the loop reaches the index 1337.