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.
After patching, the software shows "License: Pro" in About menu, no watermark, and export functionality is unlocked. 11. Countermeasures and Detection Lumion 11 may include integrity checks on its DLLs (CRC32 or embedded hash). If checksums are validated, the patched DLL will be rejected, and the program may crash or revert to trial.
Find the ValidateLicense function entry: patch lumion 11
Better: redirect the function to a code cave containing:
; 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 ). Pattern: 48 8B 4C 24 08 48 85 C9 74
Function SendActivationRequest was located in LumionNetworking.dll . The simplest patch is to make it return success without sending.
Hex bytes: B0 01 5D C3 instead of 32 C0 5D C3 (where applicable). The simplest patch (used in many public “cracks”)
Original:
This replaces call ... test eax, eax jz with mov al,1 and NOP sled.