[C#][asm] Examples

[Scorpiona]

These are just some things I've worked out while coding and figured I'd share. I don't know asm and have been learning as I go along (thanks to Nesox for your help); please feel free to critique if there's something I should know, or that I've missed.

ClickToMove (remember, unused fields can be left 0)

                uint pMe = 0, pInteractGuid = 0, pClickPos = 0;
                try {
                    pMe = Allocate(4);
                    Memory.WriteUInt(pMe, Me);
                    pInteractGuid = Allocate(8);
                    Memory.WriteUInt64(pInteractGuid, interactGuid);
                    pClickPos = Allocate(pointSize);
                    Memory.WriteObject(pClickPos, clickPos);

                    ClearAndExecute(
                        "push "+precision,
                        "push "+pClickPos,
                        "push "+pInteractGuid,
                        "push "+(uint)clickType,
                        "mov ecx, ["+pMe+"]",
                        "call "+p_ClickToMove,
                        "retn"
                        );
                } catch(MemoryReadFailedException) {
                } finally {
                    if(pMe!=0)
                        Memory.FreeMemory(pMe);
                    if(pInteractGuid!=0)
                        Memory.FreeMemory(pInteractGuid);
                    if(pClickPos!=0)
                        Memory.FreeMemory(pClickPos);
                }

GetLocalizedText

                uint lpLua = 0, pReturnBlock = 0;
                string szReturn = null;
                try {
                    lpLua = Allocate(szLuaVariable.Length);
                    Memory.WriteASCIIString(lpLua, szLuaVariable);
                    pReturnBlock = Allocate(255);

                    if(pReturnBlock==0) return null;

                    ClearAndExecute(
                        "push -1",
                        "push " + lpLua,
                        "mov ecx, " + pMe,
                        "call " + lua_getlocalizedtext,
                        "mov ["+pReturnBlock+"], eax",
                        "retn"
                    );

                    var pReturn = Memory.ReadUInt(pReturnBlock);
                    if(pReturn!=0) szReturn = Memory.ReadASCIIString(pReturn, 255);
                } catch(MemoryReadFailedException) {
                } finally {
                    if(lpLua != 0)
                        Memory.FreeMemory(lpLua);
                    if(pReturnBlock != 0)
                        Memory.FreeMemory(pReturnBlock);
                }

DoString (mostly copypasta from Nesox's aHook wrapper example)

                uint lpLua = 0;

                try {
                    lpLua = Allocate(szLua.Length + szLuaFile.Length + 4);

                    var lpLuaFile = lpLua + (uint)szLua.Length + 2;

                    Memory.WriteASCIIString(lpLua, szLua);
                    Memory.WriteASCIIString(lpLuaFile, szLuaFile);

                    ClearAndExecute(
                        "push " + pState,
                        "push " + lpLuaFile,
                        "push " + lpLua,
                        "call " + lua_dostring,
                        "add esp, 0xC",
                        "retn"
                        );
                } catch(MemoryReadFailedException) {
                } finally {
                    if(lpLua != 0)
                        Memory.FreeMemory(lpLua);
                }

UpdateHardwareEvent

                ClearAndExecute(
                    "call "+p_GetTimestamp,
                    "mov ["+p_LastHardwareAction+"], eax",
                    "retn"
                    );

[MaiN]

DoString (mostly copypasta from Nesox's aHook wrapper example)

                uint lpLua = 0;

                try {
                    lpLua = Allocate(szLua.Length + szLuaFile.Length + 4);

                    var lpLuaFile = lpLua + (uint)szLua.Length + 2;

                    Memory.WriteASCIIString(lpLua, szLua);
                    Memory.WriteASCIIString(lpLuaFile, szLuaFile);

                    ClearAndExecute(
                        "push " + pState,
                        "push " + lpLuaFile,
                        "push " + lpLua,
                        "call " + lua_dostring,
                        "add esp, 0xC",
                        "retn"
                        );
                } catch(MemoryReadFailedException) {
                } finally {
                    if(lpLua != 0)
                        Memory.FreeMemory(lpLua);
                }

You're not freeing the allocated Lua file string memory.

[Scorpiona]

You're not freeing the allocated Lua file string memory.

lpLuaFile is never allocated to, it's only used to write szLuaFile in the correct position. lpLua is the pointer to the allocated block, and the lua file is being written within that block. It is freed along with lpLua.

[MaiN]

lpLuaFile is never allocated to, it's only used to write szLuaFile in the correct position. lpLua is the pointer to the allocated block, and the lua file is being written within that block. It is freed along with lpLua.

Sorry, I completely missed that!