Plaid 16 butterfly

Solved by 4rbit3r This was another good challenge from the ctf. This one actually taught me a new vector of exploit called bit-flip. The binary first takes in an input and then converts it into a number using strtol() (call it n) and stores it in rbx register.Then it divides n by 3 and stores...

Advertisements

Plaid’16 unix_time_formatter

Solved by 4rbit3r This was one of the easier pwnable challenges in the ctf. I thoroughly enjoyed the ctf. Great job admins! So the binary basically takes in two arguments namely format and time and executes the command "/bin/date -d @time +format" which returns the unix time. The first thing I thought of was to...