Patch Lumion 11 -

This replaces call ... test eax, eax jz with mov al,1 and NOP sled.

; At SendActivationRequest entry mov eax, 1 ; return success ret 16 ; clean stack (adjust according to calling convention) Overwrite the first 5 bytes with B8 01 00 00 00 C3 . However, stack cleanup requires matching the original function's calling convention ( __cdecl or __fastcall ).

Better: redirect the function to a code cave containing: patch lumion 11

Original:

call LumionLicense::ValidateLicense test al, al jz license_invalid Change the function prologue or the return value. This replaces call

mov rax, 1 ret The function ValidateHWID compares the stored hardware ID against current hardware. To avoid license invalidation after hardware changes (or to work with pre-generated license files), patch:

Function SendActivationRequest was located in LumionNetworking.dll . The simplest patch is to make it return success without sending. To avoid license invalidation after hardware changes (or

Lumion is a real-time 3D rendering software heavily used in architecture. Version 11 introduced enhanced licensing security, including server-side key validation and local obfuscation. Before any patching, the following protection layers were identified:

Find the ValidateLicense function entry:

Pattern: 48 8B 4C 24 08 48 85 C9 74 ?? E8 ?? ?? ?? ?? 85 C0 This pattern leads to a function named IsLicenseValid() in pseudocode. The simplest patch (used in many public “cracks”) is to force the license validation function to always return true (1) and skip network activation.