Keygen_rev50.py

#usr/bin/python

#Faid Mohammed Amine 
#Fb : piratuer

import commands

############### HackCon CTF 2017 -  Rev 50 - KeyGen

def get_nums(dic):
    for key in range(11,99):
         res = commands.getstatusoutput('echo "'+str(key)+'" | ltrace -o data -e strncmp ./match_me')
         text=open('data')
         letter=str(text.read().split('"')[3])[0].lower()
         dic[letter] = key
    return dic


cipher = "firhfgferfibbqlkdfhh"
passwd = ""
dico = {}
get_nums(dico)
for a in cipher:
    passwd  +=  str(dico[a])

print passwd