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vm

Challenge Description

A simple and unsuspicious vm. Nothing to see here!

MD5 Hash: adb6d0a6384a64bdd9c83d202ceed437

Short Writeup

  • Stack based VM with stack overflow
  • Overflow onto VM struct and corrupt memory size
  • R/W out-of-bounds using memory access
  • Create a fake dtor_obj in the heap
  • Null out pointer guard and populate dtor_list with the fake obj
  • Call exit for shell

Flag

DYNAMIC

Author

4rbit3r