22 lines
607 B
Python
22 lines
607 B
Python
|
from cStringIO import StringIO
|
||
|
|
|
||
|
|
def get_flag(random):
|
||
|
|
n = random.randint(10**16, 10**19)
|
||
|
|
return n
|
||
|
|
|
||
|
|
def generate_phunky(random):
|
||
|
|
n = get_flag(random)
|
||
|
|
digs = [n + ord(t) for t in 'easyctf']
|
||
|
|
prog = 'x = 0 # REDACTED\ndigs = {}\nout = ""\nfor letter in reversed(digs):\n out = chr(letter - x) + out\nprint out'.format(str(digs))
|
||
|
|
return StringIO(prog)
|
||
|
|
|
||
|
|
def generate(random):
|
||
|
|
return dict(files={
|
||
|
|
"phunky1.py": generate_phunky
|
||
|
|
})
|
||
|
|
|
||
|
|
def grade(random, key):
|
||
|
|
n = get_flag(random)
|
||
|
|
if key.find("%d" % n) >= 0:
|
||
|
|
return True, "Nice work!"
|
||
|
|
return False, "Nope."
|