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axot/genserial.py

Last active August 29, 2015 14:08
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  1. axot renamed this gist Nov 3, 2014. 1 changed file with 0 additions and 0 deletions.
    0 gistfile1.py → genserial.py
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  2. axot created this gist Nov 3, 2014.
    27 changes: 27 additions & 0 deletions gistfile1.py
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    Original file line number Diff line number Diff line change
    @@ -0,0 +1,27 @@
    import random
    import string
    import md5

    flag = md5.new()
    flag.update("this_is_not_flag!!")
    flag_md5 = flag.hexdigest()

    print "flag_md5:", flag_md5
    flag_md5 = [flag_md5[i:i+4] for i in range(0, len(flag_md5), 4)]

    i = 0
    res = []
    while True:
    serial = ''.join(random.choice(string.ascii_lowercase + \
    string.ascii_uppercase) for _ in range(4))
    m = md5.new()
    m.update(serial)
    md = m.hexdigest()

    if i < len(flag_md5) and md[0:4] == flag_md5[i]:
    res.append(serial)
    i += 1

    if i == len(flag_md5):
    print "found serial: ",''.join(res)
    break