Example 2

Assembly Language Tutorial

Please choose a tutorial page: Fundamentals -- Information about C Tools Registers Simple Instructions Example 1 -- SC CDKey Initial Verification Example 2 -- SC CDKey Shuffle Example 2b -- SC CDKey Final Decode The Stack Stack Example Functions Example 3 -- Storm.dll SStrChr Assembly Summary Machine Code Example 4 -- Smashing the Stack Cracking a Game Example 5 -- Cracking a game Example 6 -- Writing a keygen .dll Injection and Patching Memory Searching Example 7 -- Writing a cheat for Starcraft (1.05) Example 7 Step 1 -- Displaying Messages Example 7 Step 1b -- Above, w/ func ptrs Example 7 Final Example 8 -- Getting IX86.dll files 16-bit Assembly Example 9 -- Keygen for a 16-bit game Example 10 -- Writing a loader

   lea     edi, [esi+0Bh]
   mov     ecx, 0C2h
top:
   mov     eax, ecx
   mov     ebx, 0Ch
   cdq
   idiv    ebx
   mov     al, [edi]
   sub     ecx, 11h
   dec     edi
   cmp     ecx, 7
   mov     bl, [edx+esi]
   mov     [edi+1], bl
   mov     [edx+esi], al
   jge     top