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This year’s HACKvent hosted on competition.hacking-lab.com has been as great as every year. There was a total amount of 28 awesome challenges with varying difficulties. |
HACKvent19 writeup
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This year’s HACKvent was hosted on the brand new Hacking-Lab 2.0 plattform. Each day from the 1st of december until the 24th a new challenge is published raising in difficulty. The flag format changed from HV18-xxxx-xxxx-xxxx-xxxx-xxxx to HV19{...}. After all I managed to solve all 28 challenges 🙂 |
Meepwn CTF Quals 2018 – babysandbox
The Meepwn CTF Quals 2018 (ctftime.org) ran from 13/07/2018, 19:00 UTC to 15/07/2018 19:00 UTC.
There were a lot of interesting-looking challenges. As always, time was the limiting factor 😉 I managed to spend 2 hours on saturday morning solving the pwn challenge babysandbox.
Hacky Easter 2018 writeup
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As every year hacking-lab.com carried out the annual Hacky Easter event with 27 challenges. I could not spend as much time as I would have liked to on solving the challenges, but after all I managed to collect 25 of the 27 eggs and focused on this writeup. |
RPISEC/MBE: writeup lab09 (C++)
In the last lab we focused on Misc and Stack Cookies. In this next to last lab some characteristics when dealing with C++ are introduced.
RPISEC/MBE: writeup lab08 (Misc and Stack Cookies)
While the last lab introduced the subject of Heap Exploitation, this lab focuses on Misc and Stack Cookies.
The lab contains three levels again ranging from C to A:
–> lab8C
–> lab8B
–> lab8A
Continue reading “RPISEC/MBE: writeup lab08 (Misc and Stack Cookies)”
TAMUctf 18 – writeup pwn1-5
The Texas A&M University CTF (ctftime.org) ran for over one week from 17/02/2018, 00:00 UTC to 26/02/2018 00:00 UTC. There have been a lot of challenges starting at a very easy difficulty.
I did the five pwn challenges ranging from 25 to 200 points:
–> pwn1 (25 pts)
–> pwn2 (50 pts)
–> pwn3 (75 pts)
–> pwn4 (125 pts)
–> pwn5 (200 pts)
RPISEC/MBE: writeup lab07 (Heap Exploitation)
After we have introduced ASLR and ways to bypass it in the last writeup, we will expand our exploits to the Heap in this lab.
In this lab there are only two levels:
–> lab7C
–> lab7A
Continue reading “RPISEC/MBE: writeup lab07 (Heap Exploitation)”
RPISEC/MBE: writeup lab06 (ASLR)
The previous lab focused on the subject of return oriented programming in order to circumvent data execution prevention. The next lab described in this writeup introduces ASLR.
The single levels of this lab range from C to A:
–> lab6C
–> lab6B
–> lab6A
Note: ASLR should be enabled by now.
RPISEC/MBE: writeup lab05 (DEP and ROP)
In the last writeup we used different format string vulnerabilites in order to exploit the provided binaries. This writeup continues with lab05 which introduces DEP and ROP.
As usual there are three levels ranging from C to A:
–> lab5C
–> lab5B
–> lab5A