/// <summary> /// Returns the hardcoded client revision string from the Outgoing[4000] message class. /// </summary> /// <returns></returns> public string GetClientRevision() { if (!string.IsNullOrWhiteSpace(_clientRevision)) { return(_clientRevision); } if (!(OutgoingMessages?.ContainsKey(4000) ?? false)) { return(string.Empty); } ASInstance outgoingInstance = OutgoingMessages[4000].Instance; ASMethod method = outgoingInstance.FindFirstMethod(null, "Array"); if (method == null) { return(string.Empty); } using (var inCode = new FlashReader(method.Body.Bytecode)) { object[] values = inCode.ReadValuesUntil(OPCode.PushString); var pushStringIndex = (int)values[0]; _clientRevision = method.ABC.Constants.Strings[pushStringIndex]; } return(_clientRevision); }
/// <summary> /// Modifies the bytecode to allow the client to connect to anywhere. /// </summary> public void BypassRemoteHostCheck() { ABCFile abc = ABCFiles[2]; ASInstance habboCommMngr = abc.FindFirstInstanceByName("HabboCommunicationManager"); if (habboCommMngr == null) { return; } int hostValueSlotObjTypeIndex = -1; string hostValueSlotObjName = string.Empty; foreach (ASTrait trait in habboCommMngr.Traits) { if (trait.TraitType != TraitType.Slot) { continue; } if (((SlotConstantTrait)trait.Data).TypeName.Name != "String") { continue; } hostValueSlotObjName = trait.Name.Name; hostValueSlotObjTypeIndex = trait.NameIndex; break; } ASMethod initCompMethod = habboCommMngr .FindFirstMethod("initComponent", "void"); int getPropertyObjTypeIndex = abc.Constants .IndexOfMultiname("getProperty"); ASMethod initConnectionMethod = null; using (var outCode = new FlashWriter()) using (var inCode = new FlashReader(initCompMethod.Body.Bytecode)) { object[] values = inCode.ReadValuesUntil(OPCode.CallPropVoid, null, 0); if (values == null) { return; } CopyBytecode(inCode, outCode, 0, inCode.Position); outCode.WriteOP(OPCode.GetLocal_0); outCode.WriteOP(OPCode.FindPropStrict, getPropertyObjTypeIndex); outCode.WriteOP(OPCode.PushString, abc.Constants.AddString("connection.info.host")); outCode.WriteOP(OPCode.CallProperty, getPropertyObjTypeIndex, 1); outCode.WriteOP(OPCode.InitProperty, hostValueSlotObjTypeIndex); WriteLog($"Method '{initCompMethod}' modified to include '{hostValueSlotObjName} = getProperty(\"connection.info.host\");'."); CopyBytecode(inCode, outCode); initCompMethod.Body.Bytecode = outCode.ToArray(); values = inCode.ReadValuesUntil(OPCode.CallPropVoid); ASMultiname callPropVoidType = abc.Constants.Multinames[(int)values[0]]; initConnectionMethod = habboCommMngr.FindFirstMethod(callPropVoidType.Name, "void"); } using (var outCode = new FlashWriter()) using (var inCode = new FlashReader(initConnectionMethod.Body.Bytecode)) { int ifNeCount = 0; int byteJumpCountPos = 0; int differenceOffset = 0; uint byteJumpCountValue = 0; int magicNumberIndex = abc.Constants.AddInteger(65290); while (inCode.IsDataAvailable) { OPCode op = inCode.ReadOP(); object[] values = null; if (op != OPCode.PushInt) { values = inCode.ReadValues(op); outCode.WriteOP(op, values); if (op == OPCode.IfNe && (++ifNeCount == 2 || ifNeCount == 4)) { byteJumpCountPos = (outCode.Position - 3); byteJumpCountValue = (uint)values[0]; } continue; } bool isFinalPushInt = false; int pushIntIndex = inCode.Read7BitEncodedInt(); int pushIntValue = abc.Constants.Integers[pushIntIndex]; #region Switch: pushIntValue switch (pushIntValue) { case 65244: //97 case 65185: //32 case 65191: //175 case 65189: //123 case 65188: //164 case 65174: //45 case 65238: //297 case 65184: //127 case 65171: //20 case 65172: //58 { pushIntIndex = magicNumberIndex; isFinalPushInt = (pushIntValue == 65172); break; } } #endregion outCode.WriteOP(op, pushIntIndex); int byteDifference = (((inCode.Position - outCode.Length) * -1) - differenceOffset); if (isFinalPushInt) { int curPos = outCode.Position; differenceOffset += byteDifference; outCode.Position = byteJumpCountPos; outCode.WriteS24(byteJumpCountValue + (uint)byteDifference); outCode.Position = curPos; if (ifNeCount == 4) { CopyBytecode(inCode, outCode); initConnectionMethod.Body.Bytecode = outCode.ToArray(); WriteLog($"Method '{initConnectionMethod}' modified to not append suffix to the host value."); return; } } } } }