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I have a program and I like to know if the assigment of a value is correct, but when I try to run in debug mode and with an argument it sends this error:

$ r2 -d ./col "`python -c "print '\x41'*16+'\xEC\x09\xDD\x21'"`"
INValid fd
USING 0
Cannot open '0����U' for writing.

This why maybe happen?

thanks

  • 1
    What version of r2 do you use? This command works for me in a simple program that prints argv[1]. Anyway, you better check rarun2 for such tasks. – Megabeets Apr 4 '18 at 4:47
  • My bad, after trying and keep search in google, I see that radare don't allow the backticks: github.com/radare/radare2/issues/8499, in the issue explain use better $() instead of the backticks `. thanks. – Cristino Apr 4 '18 at 17:30

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