diff --git a/src/gallia/commands/primitive/uds/dddi.py b/src/gallia/commands/primitive/uds/dddi.py
new file mode 100644
index 000000000..baa07840a
--- /dev/null
+++ b/src/gallia/commands/primitive/uds/dddi.py
@@ -0,0 +1,178 @@
+# SPDX-FileCopyrightText: AISEC Pentesting Team
+#
+# SPDX-License-Identifier: Apache-2.0
+
+import sys
+from typing import Annotated
+
+from pydantic import BeforeValidator
+
+from gallia.command import UDSScanner
+from gallia.command.config import AutoInt, Field, err_int
+from gallia.command.uds import UDSScannerConfig
+from gallia.log import get_logger
+from gallia.services.uds import NegativeResponse
+from gallia.services.uds.core.utils import g_repr
+
+logger = get_logger(__name__)
+
+
+class DDDIPrimitiveConfig(UDSScannerConfig):
+    properties: bool = Field(
+        False,
+        description="Read and store the ECU properties prior and after scan",
+        cli_group=UDSScannerConfig._cli_group,
+        config_section=UDSScannerConfig._config_section,
+    )
+    session: AutoInt = Field(0x01, description="The session in which the requests are made")
+
+
+def parse_definitions(value: str | tuple[int, ...], expected_len: int) -> tuple[int, ...]:
+    if isinstance(value, tuple):
+        if len(value) != expected_len:
+            raise ValueError(f"Need exactly {expected_len} values for each definition")
+
+        return value
+
+    values = value.split(":")
+
+    if len(values) != expected_len:
+        raise ValueError(f"Need exactly {expected_len} values for each definition")
+
+    return tuple(err_int(x, 0) for x in values)
+
+
+def parse_id(value: str | tuple[int, int, int]) -> tuple[int, int, int]:
+    return parse_definitions(value, 3)  # type: ignore
+
+
+def parse_mem(value: str | tuple[int, int]) -> tuple[int, int]:
+    return parse_definitions(value, 2)  # type: ignore
+
+
+class DefineByIdentifierDDDIPrimitiveConfig(DDDIPrimitiveConfig):
+    data_identifier: AutoInt = Field(
+        description="The new dynamically defined data identifier", positional=True
+    )
+    sources: list[Annotated[tuple[int, int, int], BeforeValidator(parse_id)]] = Field(
+        description="The definitions of the source data to be included in the dynamically defined data. Each of them consists of a data identifier, the start byte of the corresponding data record (1-indexed) and its length in bytes",
+        metavar="ID:START:LENGTH",
+    )
+
+
+class DefineByMemoryAddressDDDIPrimitiveConfig(DDDIPrimitiveConfig):
+    data_identifier: AutoInt = Field(
+        description="The new dynamically defined data identifier", positional=True
+    )
+    sources: list[Annotated[tuple[int, int], BeforeValidator(parse_mem)]] = Field(
+        description="The definitions of the source data to be included in the dynamically defined data. each of them consists of a memory address and the length in bytes",
+        metavar="ADDRESS:LENGTH",
+    )
+    address_format: int | None = Field(
+        None,
+        description="The addressAndLengthFormatIdentifier, which can be set manually or deduced automatically if not given explicitly",
+    )
+
+
+class ClearDynamicallyDefinedDataIdentifierDDDIPrimitiveConfig(DDDIPrimitiveConfig):
+    data_identifier: AutoInt | None = Field(
+        description="The dynamically defined data identifier to be cleared. Omit if all dynamically defined identifiers should be cleared."
+    )
+
+
+class DDDIPrimitive(UDSScanner):
+    """dynamically define data identifiers"""
+
+    CONFIG_TYPE = DDDIPrimitiveConfig
+    SHORT_HELP = "DynamicallyDefineDataIdentifiers"
+
+    def __init__(self, config: DDDIPrimitiveConfig):
+        super().__init__(config)
+        self.config: DDDIPrimitiveConfig = config
+
+    async def main(self) -> None:
+        try:
+            await self.ecu.check_and_set_session(self.config.session)
+        except Exception as e:
+            logger.critical(f"Could not change to session: {g_repr(self.config.session)}: {e!r}")
+            sys.exit(1)
+
+
+class DefineByIdentifierDDDIPrimitive(DDDIPrimitive):
+    CONFIG_TYPE = DefineByIdentifierDDDIPrimitiveConfig
+    SHORT_HELP = "DefineByIdentifier"
+
+    def __init__(self, config: DefineByIdentifierDDDIPrimitiveConfig):
+        super().__init__(config)
+        self.config: DefineByIdentifierDDDIPrimitiveConfig = config
+
+    async def main(self) -> None:
+        await super().main()
+
+        source_identifiers = []
+        start_positions = []
+        lengths = []
+
+        for identifier, start, length in self.config.sources:
+            source_identifiers.append(identifier)
+            start_positions.append(start)
+            lengths.append(length)
+
+        response = self.ecu.define_by_identifier(
+            self.config.data_identifier, source_identifiers, start_positions, lengths
+        )
+
+        if isinstance(response, NegativeResponse):
+            logger.error(response)
+        else:
+            # There is not real data returned, only echoes
+            logger.result("Success")
+
+
+class DefineByMemoryAddressDDDIPrimitive(DDDIPrimitive):
+    CONFIG_TYPE = DefineByIdentifierDDDIPrimitiveConfig
+    SHORT_HELP = "DefineByMemoryAddress"
+
+    def __init__(self, config: DefineByMemoryAddressDDDIPrimitiveConfig):
+        super().__init__(config)
+        self.config: DefineByMemoryAddressDDDIPrimitiveConfig = config
+
+    async def main(self) -> None:
+        await super().main()
+
+        addresses = []
+        lengths = []
+
+        for address, length in self.config.sources:
+            addresses.append(address)
+            lengths.append(length)
+
+        response = self.ecu.define_by_memory_address(
+            self.config.data_identifier, addresses, lengths, self.config.address_format
+        )
+
+        if isinstance(response, NegativeResponse):
+            logger.error(response)
+        else:
+            # There is not real data returned, only echoes
+            logger.result("Success")
+
+
+class ClearDynamicallyDefinedDataIdentifierDDDIPrimitive(DDDIPrimitive):
+    CONFIG_TYPE = ClearDynamicallyDefinedDataIdentifierDDDIPrimitiveConfig
+    SHORT_HELP = "ClearDynamicallyDefinedDataIdentifier"
+
+    def __init__(self, config: ClearDynamicallyDefinedDataIdentifierDDDIPrimitiveConfig):
+        super().__init__(config)
+        self.config: ClearDynamicallyDefinedDataIdentifierDDDIPrimitiveConfig = config
+
+    async def main(self) -> None:
+        await super().main()
+
+        response = self.ecu.clear_dynamically_defined_data_identifier(self.config.data_identifier)
+
+        if isinstance(response, NegativeResponse):
+            logger.error(response)
+        else:
+            # There is not real data returned, only echoes
+            logger.result("Success")
diff --git a/src/gallia/plugins/uds.py b/src/gallia/plugins/uds.py
index 915622fa2..c5babe54d 100644
--- a/src/gallia/plugins/uds.py
+++ b/src/gallia/plugins/uds.py
@@ -9,6 +9,11 @@
 from gallia.commands import HSFZDiscoverer
 from gallia.commands.discover.doip import DoIPDiscoverer
 from gallia.commands.primitive.generic.pdu import GenericPDUPrimitive
+from gallia.commands.primitive.uds.dddi import (
+    ClearDynamicallyDefinedDataIdentifierDDDIPrimitive,
+    DefineByIdentifierDDDIPrimitive,
+    DefineByMemoryAddressDDDIPrimitive,
+)
 from gallia.commands.primitive.uds.dtc import (
     ClearDTCPrimitive,
     ControlDTCPrimitive,
@@ -72,6 +77,14 @@ def commands(cls) -> Mapping[str, CommandTree | type[BaseCommand]]:
                         description="Universal Diagnostic Services",
                         subtree={
                             "rdbi": ReadByIdentifierPrimitive,
+                            "dddi": CommandTree(
+                                description="DynamicallyDefineDataIdentifiers",
+                                subtree={
+                                    "identifier": DefineByIdentifierDDDIPrimitive,
+                                    "memory": DefineByMemoryAddressDDDIPrimitive,
+                                    "clear": ClearDynamicallyDefinedDataIdentifierDDDIPrimitive,
+                                },
+                            ),
                             "dtc": CommandTree(
                                 description="DiagnosticTroubleCodes",
                                 subtree={