Using kaitai struct to parse tls client hello

1 files changed, 146 insertions, 0 deletions

diff --git a/mitmproxy/contrib/kaitaistruct/tls_client_hello.py b/mitmproxy/contrib/kaitaistruct/tls_client_hello.py
new file mode 100644
index 00000000..6aff9b14
--- /dev/null
+++ b/mitmproxy/contrib/kaitaistruct/tls_client_hello.py
@@ -0,0 +1,146 @@
+# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild
+
+import array
+import struct
+import zlib
+from enum import Enum
+from pkg_resources import parse_version
+
+from kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO
+
+if parse_version(ks_version) < parse_version('0.7'):
+    raise Exception("Incompatible Kaitai Struct Python API: 0.7 or later is required, but you have %s" % (ks_version))
+
+
+class TlsClientHello(KaitaiStruct):
+    def __init__(self, _io, _parent=None, _root=None):
+        self._io = _io
+        self._parent = _parent
+        self._root = _root if _root else self
+        self.version = self._root.Version(self._io, self, self._root)
+        self.random = self._root.Random(self._io, self, self._root)
+        self.session_id = self._root.SessionId(self._io, self, self._root)
+        self.cipher_suites = self._root.CipherSuites(self._io, self, self._root)
+        self.compression_methods = self._root.CompressionMethods(self._io, self, self._root)
+        if self._io.is_eof() == True:
+            self.extensions = [None] * (0)
+            for i in range(0):
+                self.extensions[i] = self._io.read_bytes(0)
+
+        if self._io.is_eof() == False:
+            self.extensions = self._root.Extensions(self._io, self, self._root)
+
+    class ServerName(KaitaiStruct):
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self.name_type = self._io.read_u1()
+            self.length = self._io.read_u2be()
+            self.host_name = self._io.read_bytes(self.length)
+
+    class Random(KaitaiStruct):
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self.gmt_unix_time = self._io.read_u4be()
+            self.random = self._io.read_bytes(28)
+
+    class SessionId(KaitaiStruct):
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self.len = self._io.read_u1()
+            self.sid = self._io.read_bytes(self.len)
+
+    class Sni(KaitaiStruct):
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self.list_length = self._io.read_u2be()
+            self.server_names = []
+            while not self._io.is_eof():
+                self.server_names.append(self._root.ServerName(self._io, self, self._root))
+
+    class CipherSuites(KaitaiStruct):
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self.len = self._io.read_u2be()
+            self.cipher_suites = [None] * (self.len // 2)
+            for i in range(self.len // 2):
+                self.cipher_suites[i] = self._root.CipherSuite(self._io, self, self._root)
+
+    class CompressionMethods(KaitaiStruct):
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self.len = self._io.read_u1()
+            self.compression_methods = self._io.read_bytes(self.len)
+
+    class Alpn(KaitaiStruct):
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self.ext_len = self._io.read_u2be()
+            self.alpn_protocols = []
+            while not self._io.is_eof():
+                self.alpn_protocols.append(self._root.Protocol(self._io, self, self._root))
+
+    class Extensions(KaitaiStruct):
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self.len = self._io.read_u2be()
+            self.extensions = []
+            while not self._io.is_eof():
+                self.extensions.append(self._root.Extension(self._io, self, self._root))
+
+    class Version(KaitaiStruct):
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self.major = self._io.read_u1()
+            self.minor = self._io.read_u1()
+
+    class CipherSuite(KaitaiStruct):
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self.cipher_suite = self._io.read_u2be()
+
+    class Protocol(KaitaiStruct):
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self.strlen = self._io.read_u1()
+            self.name = self._io.read_bytes(self.strlen)
+
+    class Extension(KaitaiStruct):
+        def __init__(self, _io, _parent=None, _root=None):
+            self._io = _io
+            self._parent = _parent
+            self._root = _root if _root else self
+            self.type = self._io.read_u2be()
+            self.len = self._io.read_u2be()
+            _on = self.type
+            if _on == 0:
+                self._raw_body = self._io.read_bytes(self.len)
+                io = KaitaiStream(BytesIO(self._raw_body))
+                self.body = self._root.Sni(io, self, self._root)
+            elif _on == 16:
+                self._raw_body = self._io.read_bytes(self.len)
+                io = KaitaiStream(BytesIO(self._raw_body))
+                self.body = self._root.Alpn(io, self, self._root)
+            else:
+                self.body = self._io.read_bytes(self.len)