vm_handler_add: mov edx, [esi] ; esi = virtual IP add [edi+reg_offset], edx add esi, 4 jmp vm_dispatch
If you are protecting software, VMProtect is excellent against script kiddies. If you are reversing malware, invest in a good tracing framework and patience. And always remember: every VM has an exit. Find the exit; own the code.
VMProtect does encrypt the entire binary — only selected functions (marked by developer) are virtualized. vmprotect reverse engineering
The secret to reversing VMProtect is to reverse the VM. It is to recognize that the VM is a tedious but deterministic interpreter. You do not need to rename every handler function. You need to answer three questions:
: An emulator for VMProtect 2 handlers, allowing you to trace execution without being bogged down by anti-debugging tricks. 4. Step-by-Step Reverse Engineering Workflow vm_handler_add: mov edx, [esi] ; esi = virtual
Example pseudo-output after custom script:
But is VMProtect truly unbreakable? No. It is time-consuming . This post explores how to approach VMProtect’s virtualization layer, break its handlers, and reconstruct original logic. Find the exit; own the code
Once you have the devirtualized assembly logic, you must fix the binary so standard tools can read it: