CTFs & Stuff

The concept here is identical to the write4 challenge. The only difference is we may struggle to find gadgets that will get the job done. If we take the time to consider a different approach we’ll succeed … Continue readingROP Emporium | fluff Solution

An arbitrary write challenge with a twist; certain input characters get mangled before finding their way onto the stack. Find a way to deal with this and craft your exploit … Continue readingROP Emporium | badchars Solution

Our first foray into proper gadget use. A call to system() is still present but we’ll need to write a string into memory somehow … Continue readingROP Emporium | write4 Solution

Reliably make consecutive calls to imported functions … Continue readingROP Emporium | callme Solution

In this challenge the elements that allowed you to complete the ret2win challenge are still present, they’ve just been split apart. Find them and recombine them using a short ROP chain. … Continue readingROP Emporium | split Solution

Locate a method within the binary that you want to call and do so by overwriting a saved return address on the stack … Continue readingROP Emporium | ret2win Solution

Introduction After completing the Exploit Education Phoenix challenges, I started looking to advance my exploit development learning. A good next step would be learning about Return Oriented Programming (ROP) toContinue readingROP Emporium | Setup

Remote heap overflow … Continue readingExploit Education | Phoenix | Final Two Solution

Remote format string! … Continue readingExploit Education | Phoenix | Final One Solution

The beginning of the end of the Phoenix exercises :) Remote stack overflow. … Continue readingExploit Education | Phoenix | Final Zero Solution