For this challenge we were supposed to reverse engineer the logic of some stuff laid out on 3 breadboards based on a couple of photos. The final goal was to figure out the correct position for 24 dip switches in order to turn a single LED on.
Addition is hard!
0x0+0x7068703f = ?
Answer in decimal
This is an easy trivia question, it even comes with a hint hidden in the second operand:
$ python2 -c "print ('%x' % 0x7068703f).decode('hex')"
Using an affected PHP binary to compute the sum yields: 3771785342
More info on the PHP bug: https://bugs.php.net/bug.php?id=61095
In case you do not have the affected PHP version you can just do this by hand as well:
7068703f = 1885892671
2 x 1885892671 = 3771785342
What’s a password that polaroid head got from inside Ellingson?
A quick google reveals this question refers to the movie “Hackers” (1995). Luckily, someone was kind enough to post the full movie script online, in which we find the following passage explicitly mentioning “shoulder surfing”:
Our lead scientist was really close to cracking this problem before a robot assassin took his life and stole all his work. All that was left was a posted saying ‘simple’.
For the “supercomputer” series of challenges you were supposed to optimize a bunch of routines inside a 64bit ELF executable in order to speed up exection so it would eventually give you “keys” based on four different algorithms. Unfortunately, due to time/profit constraints we only solved supercomputer #1.. but, here’s the writeup!