Intermediate Memory Errors


Program Security.

You've explored the art of introductory Binary Exploitation (and if you haven't, you should go back and do so!), but there is more to learn. Memory gets corrupted in many different ways, with many different implications. In this module, we explore some of these, not just to hack, but to open our minds.


Lectures and Reading


Challenges

Overflow a buffer and smash the stack to obtain the flag, but this time bypass a check designed to prevent you from doing so!

Overflow a buffer and smash the stack to obtain the flag, but this time bypass a check designed to prevent you from doing so!

Overflow a buffer and smash the stack to obtain the flag, but this time bypass another check designed to prevent you from doing so!

Overflow a buffer and smash the stack to obtain the flag, but this time bypass another check designed to prevent you from doing so!

Overflow a buffer and smash the stack to obtain the flag, but this time in a PIE binary with a stack canary. Be warned, this requires careful and clever payload construction!

Overflow a buffer and smash the stack to obtain the flag, but this time in a PIE binary with a stack canary. Be warned, this requires careful and clever payload construction!

Overflow a buffer and leak the flag. Be warned, this requires careful and clever payload construction!

Overflow a buffer and leak the flag. Be warned, this requires careful and clever payload construction!

Overflow a buffer and leak the flag. Be warned, this requires careful and clever payload construction!

Overflow a buffer and leak the flag. Be warned, this requires careful and clever payload construction!

Defeat a stack canary in a PIE binary by utilizing a bug left in the binary.

Defeat a stack canary in a PIE binary by utilizing a bug left in the binary.

Leak data left behind unintentionally by utilizing clever payload construction.

Leak data left behind unintentionally by utilizing clever payload construction.

Leak data left behind unintentionally to defeat a stack canary in a PIE binary.

Leak data left behind unintentionally to defeat a stack canary in a PIE binary.

Defeat a stack canary in a PIE binary by utilizing a network-style fork server in the target binary.

Defeat a stack canary in a PIE binary by utilizing a network-style fork server in the target binary.


30-Day Scoreboard:

This scoreboard reflects solves for challenges in this module after the module launched in this dojo.

7-Day | 30-Day | All-Time

Rank Hacker Badges Score