public static void SendChat(GameContext Context, string Text)
{
byte[] bs = Encoding.Unicode.GetBytes(Text);
int strEnd = 0;
int strMem = NativeFunctions.VirtualAllocEx(Context.HContext.Handle, 0, Text.Length + 10,
NativeFunctions.AllocationType.Commit, NativeFunctions.MemoryProtection.ExecuteReadWrite);
NativeFunctions.WriteProcessMemory(Context.HContext.Handle, strMem, bs, bs.Length, 0);
NativeFunctions.WriteProcessMemory(Context.HContext.Handle, strMem + bs.Length, ref strEnd, 4, 0);
var mscorlib_AddrHelper = Context.HContext.GetAddressHelper("mscorlib.dll");
int ctor = mscorlib_AddrHelper.GetFunctionAddress("System.String", "CtorCharPtr");
AssemblySnippet asm = AssemblySnippet.FromCode(
new AssemblyCode[] {
(Instruction)"push ecx",
(Instruction)"push edx",
AssemblySnippet.ConstructString(Context.HContext, strMem, Context.HContext.MainAddressHelper.GetStaticFieldAddress("Terraria.Main", "chatText")),
(Instruction)$"mov byte ptr [{Context.HContext.MainAddressHelper.GetStaticFieldAddress("Terraria.Main", "drawingPlayerChat")}],1",
(Instruction)$"mov byte ptr [{Context.HContext.MainAddressHelper.GetStaticFieldAddress("Terraria.Main", "inputTextEnter")}],1",
(Instruction)$"mov byte ptr [{Context.HContext.MainAddressHelper.GetStaticFieldAddress("Terraria.Main", "chatRelease")}],1",
(Instruction)"pop edx",
(Instruction)"pop ecx"
});
InlineHook.InjectAndWait(Context.HContext, asm, Context.HContext.MainAddressHelper.GetFunctionAddress("Terraria.Main", "DoUpdate"), true);
NativeFunctions.VirtualFreeEx(Context.HContext.Handle, strMem, 0);
}
public static void Call(GameContext Context, int targetAddr, int hookAddress, params object[] args)
{
Dictionary <int, int> strAddrs = new Dictionary <int, int>();
object[] trueArgs = args.Select(t =>
{
if (!(t is string) || !(t as string).TrimStart().StartsWith("@"))
{
return(t);
}
string str = t as string;
string trueStr = str.Substring(str.IndexOf("@") + 1);
int strEnd = 0;
byte[] bs = Encoding.Unicode.GetBytes(trueStr);
int maddr = NativeFunctions.VirtualAllocEx(Context.HContext.Handle, 0, bs.Length + 4, NativeFunctions.AllocationType.Commit, NativeFunctions.MemoryProtection.ExecuteReadWrite);
int taddr = NativeFunctions.VirtualAllocEx(Context.HContext.Handle, 0, 4, NativeFunctions.AllocationType.Commit, NativeFunctions.MemoryProtection.ExecuteReadWrite);
NativeFunctions.WriteProcessMemory(Context.HContext.Handle, maddr, bs, bs.Length, 0);
NativeFunctions.WriteProcessMemory(Context.HContext.Handle, maddr + bs.Length, ref strEnd, 4, 0);
strAddrs[taddr] = maddr;
return(taddr);
}).ToArray();
for (int i = 0; i < args.Length; i++)
{
var t = args[i];
if (!(t is string) || !(t as string).TrimStart().StartsWith("@"))
{
trueArgs[i] = args[i];
continue;
}
string str = t as string;
string trueStr = str.Substring(str.IndexOf("@") + 1);
int strEnd = 0;
byte[] bs = Encoding.Unicode.GetBytes(trueStr);
int maddr = NativeFunctions.VirtualAllocEx(Context.HContext.Handle, 0, bs.Length + 4, NativeFunctions.AllocationType.Commit, NativeFunctions.MemoryProtection.ExecuteReadWrite);
int taddr = NativeFunctions.VirtualAllocEx(Context.HContext.Handle, 0, 4, NativeFunctions.AllocationType.Commit, NativeFunctions.MemoryProtection.ExecuteReadWrite);
NativeFunctions.WriteProcessMemory(Context.HContext.Handle, maddr, bs, bs.Length, 0);
NativeFunctions.WriteProcessMemory(Context.HContext.Handle, maddr + bs.Length, ref strEnd, 4, 0);
strAddrs[taddr] = maddr;
trueArgs[i] = $"dword ptr [{taddr}]";
}
AssemblySnippet snippet = AssemblySnippet.FromCode(
new AssemblyCode[] {
(Instruction)"pushad",
AssemblySnippet.FromCode(
strAddrs.Select(t => AssemblySnippet.ConstructString(
Context.HContext, t.Value, t.Key
))),
AssemblySnippet.FromClrCall(
targetAddr, null, false,
trueArgs),
(Instruction)"popad"
});
InlineHook.InjectAndWait(Context.HContext, snippet, hookAddress, true);
//Console.WriteLine(snippet.GetCode());
foreach (var addrs in strAddrs)
{
NativeFunctions.VirtualFreeEx(Context.HContext.Handle, addrs.Key, 0);
NativeFunctions.VirtualFreeEx(Context.HContext.Handle, addrs.Value, 0);
}
}
