DEFCON is over, We ranked 20th in this CTF(in last year we ranked 49th), it’s time to do the write-ups and do some summary.
I solved the following 6 challenges in this CTF:
- Baby’s first — smash(pwnable)
Continue reading “[DEF CON 2017 Quals] pwnable and reverse writeups”
I participated the Backdoor CTF 2015 and found something very weird: “chmod +x” will change function’s offset. I will figure this out later. Continue reading “Backdoor CTF 2015 echo: “chmod +x” will change function’s offset”