[Pwnable] Heap of Secrets

_py · January 26, 2018, 5:22pm

Time to step up the game. Keep in mind there is more than one way to solve it. Good luck.

Feel free to pwn the binary on Ubuntu 16.04 or 17.04. Extra credits if you pwn it on 17.04.
Don’t ask me for hints. Hints will only be given 1 month after the challenge’s release as long as there are still 0 solves and demand for a hint.
Don't post your exploit below (with or without the spoiler tags)! This will not help those who still struggle. If you do pwn the binary, make sure to pm me your exploit with an explanation, and once I evaluate it, I’ll post in the comment section that you successfully pwned it providing your alias.

~ hf

Sirius · January 26, 2018, 5:36pm

Hints will only be given 1-2 months after the challenge’s release

Hmmmm, seems like you haven’t even solved it yourself yet. =p

_py · January 26, 2018, 5:53pm

I don’t get it. Why would I create and post a pwnable if I haven’t made sure it’s solvable?

Sirius · January 26, 2018, 5:54pm

If i’m not mistaken, I believe @0x00pf did that at one point in the past 2 yrs.

_py · January 26, 2018, 5:56pm

I can pm you my PoC if you’re in such doubt.

0x00pf · January 26, 2018, 5:57pm

I think I have done that a couple of times… You may be referring to this one:

Sirius · January 26, 2018, 5:58pm

Yup, that’s the one.

ricksanchez · January 26, 2018, 6:02pm

There will be a time when I finally pick up heap shenanigans and I will do all those challenges @_py!
Promised

exploit · February 4, 2018, 3:39pm

Got 'em.

_py · February 4, 2018, 6:03pm

That’s. Mah. Boy!

_py · February 25, 2018, 5:23pm

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