tl;dr

• Implemented two SEH and two VEH Exception Handlers
• Two stage malware challenge with process injection technique
• CPP binary where logic is wrapped in classes and their member functions

A brief write-up of the intended solution of P1ayground challenge from InCTF Internationals 2020

tl;dr

• Challenge is based on function hooking at runtime.
• On reversing you will find 4 functions at the same address but executing different code(basically hooked at runtime).
• Jump inside each function, reverse the algorithms to pass the checks.
• Ignore the FAKE flag check.

Intended solution of Wannavmbe challenge from InCTF Internationals 2019

tl;dr

• Challenge is a VM.
• Reverse Instruction types and implementation.
• Understand that it has a fucntion which takes the base64 of CWD (Current working directory).
• Find the corrcect directory where it needs to be placed.