127.0.0.1 activation.nitro.com 127.0.0.1 licensing.nitro.com Then Nitro falls back to offline activation? Not always – it may show "No internet connection" instead of activated.
Search for string "New version available" and patch the caller to jump over download dialog. Patch Nitro Pro 13
10001A30 push ebp 10001A31 mov ebp, esp 10001A33 call dword ptr [NitroActivation.dll+0x2F4C] ; internal check 10001A39 test eax, eax 10001A3B jnz activated 10001A3D xor eax, eax 10001A3F pop ebp 10001A40 ret activated: 10001A41 mov eax, 1 10001A46 pop ebp 10001A47 ret At 10001A33 replace call with mov eax, 1; ret (bytes: B8 01 00 00 00 C3 ). esp 10001A33 call dword ptr [NitroActivation.dll+0x2F4C]
Hook/overwrite return value.
Use a keygen (not covered here) or clone from a legit activated machine, then modify: internal check 10001A39 test eax