[C++]Adding something to a .dll or creating a new .dll

[budsmoker997]

Hi i am trying to add this to an existing .dll.....i have tried reflector and w32asm or w/e it is to decompile it...i got bloodshed dev C++ but to be honest with you i dont know what i am doing i also have olly

i have tried reading some guides but none seem to help
could anyone please post a link to a good guide easy to understand for a noob or could someone please just add this command to my .dll for me please

here is the code i need added

/*
Credits: coNsept,Yukura,leo123
*/
void AddStats(int aIndex)
{
if (!IsAddCmd) return;
cObj->Init(aIndex);
if (!strcmpi(Message, "/add"))
{
MessageOutput(aIndex, "Useage: /add <Type> <Amount>");
MessageOutput(aIndex, "The price for Add is: %d, Maximum stats: %d", AddPrice, AddMax);
return;
}
if (cObj->Money < AddPrice)
{
MessageOutput(aIndex, "You are lacking zen! %d", AddPrice - cObj->Money);
return;
}
char Param1[100];
memset(Param1, 0x00, 100);
GetParam(1, Message, Param1);
int AddType = 0;
if (!strcmpi(Param1, "str")) AddType = 0xB8;
if (!strcmpi(Param1, "agi")) AddType = 0xBA;
if (!strcmpi(Param1, "vit")) AddType = 0xBC;
if (!strcmpi(Param1, "eng")) AddType = 0xBE;
if (!strcmpi(Param1, "cmd")) AddType = 0xD8;
if (!AddType)
{
MessageOutput(aIndex, "You have selected wrong type! The types are: str, agi, vit, eng, cmd");
return;
}
if (cObj->Class != 4 && AddType == 0xD8)
{
MessageOutput(aIndex, "Only Dark Lords can use the add cmd type.");
return;
}
char Param2[100];
memset(Param2, 0x00, 100);
GetParam(2, Message, Param2);
int StatsToAdd = atoi(Param2);
if (cObj->LvlUpPoints < StatsToAdd)
{
MessageOutput(aIndex, "You are lacking level up points! %d", StatsToAdd - cObj->LvlUpPoints);
return;
}
int NowStats = cObj->GetWord(AddType);
if ((StatsToAdd + NowStats) > AddMax)
{
MessageOutput(aIndex, "You are not allowed to add more than %d points!", AddMax);
return;
}
BYTE Packet[5] = {0xC1, 0x05, 0x0F3, 0x06};
Packet[4] = ((AddType % 16) ^ 8) / 2; // Nice algorithm by coNsept to convert from gObj Offsets to the add types
if (AddType == 0xD8) Packet[4] = 0x04;
if (StatsToAdd <= 100)
for (int i=0; i<StatsToAdd; i++)
CGLevelUpPointAdd(Packet, aIndex);
else
{
int Amount = (cObj->LvlUpPoints - StatsToAdd - 1);
cObj->SetInt(0xA4, Amount);
cObj->AddInt(AddType, StatsToAdd - 1);
CGLevelUpPointAdd(Packet, aIndex);
}
cObj->SetInt(0xB4, cObj->Money - AddPrice);
CGMoneySend(aIndex, cObj->Money - AddPrice);
cObj->Init(aIndex);
MessageOutput(aIndex, "You've added %d points. You have now %d points left.", StatsToAdd, cObj->LvlUpPoints);
if (StatsToAdd > 100)
MessageOutput(aIndex, "Please relog and your stats will be updated.");
}



and here is my .dll

http://ufmu.no-ip.biz/dll.rar

thank you so so much

 

[budsmoker997]

someone please help?

 

[zarut]

far as i know you need source to make an dll so if youre trying edit without it will fail :U

 

[_Gabriel_]

You can't. Why don't you make another *.dll?

 

[Sythrus]

You can't really inject code like you in .dll and to be honest It's totally stupid.

The dll you want to inject code in is loaded by a process, It's better to inject code in this process.
I suggest you to read articles about Win32 API and Hooking.