'''Full write-up: https://github.com/ginjabenjamin/CTF/tree/master/PicoCTF2017/RE/Level-03-MuchAdoAboutHacking'''# cat ans.py #!/usr/bin/env python
donpedro = 0achilles = 32cleopatra = 96
ending = 'tu1|\h+&g\OP7@% :BH7M6m3g='flag = ''
beatrice = len(ending)for benedick in ending:    x = ord(benedick)    x = x - achilles    x = x - donpedro
    # Assigning Don Pedro here, we can eliminate Don John    donpedro = x
	# To reverse the algorithm, we add cleopatra (96) before the modulo operation    x = (x + cleopatra) % cleopatra
    # Modulo to handle negative values    benedick = chr((x + achilles) % 192)
    flag += benedick
# Reverse our flag stringprint flag[::-1]+' '