Solutions for the Python Challenge

Show possible solutions for: All levels; level: previous, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, next

Possible solution for level 20

URI:

http://www.pythonchallenge.com/pc/hex/idiot2.html

Log-in data:

Username: butter; password: fly

Comment:

Yes, the ZIP file you eventually get actually is level 21.

Possible Solution:

import httplib, base64

base64_login = base64.encodestring('%s:%s' % ("butter", "fly"))[:-1]
headers = {"Authorization": "Basic %s" % base64_login}
conn = httplib.HTTPConnection("www.pythonchallenge.com")

# Needless to say that normally we wouldn't know about the exact byte
# ranges yet and thus probably use infinite loops instead ...

for n in range(30203, 30314):
    headers["Range"] = "bytes=%s-%s" % (n, n + 1)
    conn.request("GET", "/pc/hex/unreal.jpg", "", headers)
    response = conn.getresponse()
    data = response.read()

    if data:
        print data

# We now know that our username is "invader".

for n in (2123456744, 2123456743):
    headers["Range"] = "bytes=%s-%s" % (n, n + 1)
    conn.request("GET", "/pc/hex/unreal.jpg", "", headers)
    response = conn.getresponse()

    print response.read()

# We learned that "the password is your new nickname in reverse", thus:
# "redavni". Further, that "it is hiding at 1152983631".

headers["Range"] = "bytes=1152983631-1152983632"
conn.request("GET", "/pc/hex/unreal.jpg", "", headers)
response = conn.getresponse()

h = open("data.zip", "wb")
h.write(response.read())
h.close()

# Unzip the file and read the "readme.txt" it contains.

(Download this source code.)

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