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dcerpc: remove fragmented data tests
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With the introduction of AppLayerResult::incomplete API, fragmented data
is no longer handled fully in the dcerpc code making the tests about
such data invalid.

Ticket 5699
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@inashivb
inashivb committed Jul 21, 2023
1 parent 8ec2ad9 commit 138b367
Showing 1 changed file with 0 additions and 235 deletions.
235 changes: 0 additions & 235 deletions rust/src/dcerpc/dcerpc.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1843,216 +1843,6 @@ mod tests {
);
}

#[test]
pub fn test_parse_bind_frag_1() {
let bind1: &[u8] = &[
0x05, 0x00, 0x0b, 0x03, 0x10, 0x00, 0x00, 0x00, 0xdc, 0x02, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xd0, 0x16, 0xd0, 0x16, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00,
0x00, 0x00, 0x01, 0x00, 0xc7, 0x70, 0x0d, 0x3e, 0x71, 0x37, 0x39, 0x0d, 0x3a, 0x4f,
0xd3, 0xdc, 0xca, 0x49, 0xe8, 0xa3, 0x05, 0x00, 0x00, 0x00, 0x04, 0x5d, 0x88, 0x8a,
0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60, 0x02, 0x00,
0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x84, 0xb6, 0x55, 0x75, 0xdb, 0x9e, 0xba, 0x54,
0x56, 0xd3, 0x45, 0x10, 0xb7, 0x7a, 0x2a, 0xe2, 0x04, 0x00, 0x01, 0x00, 0x04, 0x5d,
0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60,
0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01, 0x00, 0x6e, 0x39, 0x21, 0x24, 0x70, 0x6f,
0x41, 0x57, 0x54, 0x70, 0xb8, 0xc3, 0x5e, 0x89, 0x3b, 0x43, 0x03, 0x00, 0x00, 0x00,
0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10,
0x48, 0x60, 0x02, 0x00, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x39, 0x6a, 0x86, 0x5d,
0x24, 0x0f, 0xd2, 0xf7, 0xb6, 0xce, 0x95, 0x9c, 0x54, 0x1d, 0x3a, 0xdb, 0x02, 0x00,
0x01, 0x00, 0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00,
0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00, 0x04, 0x00, 0x01, 0x00, 0x12, 0xa5,
0xdd, 0xc5, 0x55, 0xce, 0xc3, 0x46, 0xbd, 0xa0, 0x94, 0x39, 0x3c, 0x0d, 0x9b, 0x5b,
0x00, 0x00, 0x00, 0x00, 0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8,
0x08, 0x00, 0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00, 0x05, 0x00, 0x01, 0x00,
0x87, 0x1c, 0x8b, 0x6e, 0x11, 0xa8, 0x67, 0x98, 0xd4, 0x5d, 0xf6, 0x8a, 0x2f, 0x33,
0x24, 0x7b, 0x05, 0x00, 0x03, 0x00, 0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11,
0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00, 0x06, 0x00,
0x01, 0x00, 0x9b, 0x82, 0x13, 0xd1, 0x28, 0xe0, 0x63, 0xf3, 0x62, 0xee, 0x76, 0x73,
0xf9, 0xac, 0x3d, 0x2e, 0x03, 0x00, 0x00, 0x00, 0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c,
0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00,
0x07, 0x00, 0x01, 0x00, 0xa9, 0xd4, 0x73, 0xf2, 0xed, 0xad, 0xe8, 0x82, 0xf8, 0xcf,
0x9d, 0x9f, 0x66, 0xe6, 0x43, 0x37, 0x02, 0x00, 0x01, 0x00, 0x04, 0x5d, 0x88, 0x8a,
0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60, 0x02, 0x00,
0x00, 0x00, 0x08, 0x00, 0x01, 0x00, 0x06, 0x2b, 0x85, 0x38, 0x4f, 0x73, 0x96, 0xb1,
0x73, 0xe1, 0x59, 0xbe, 0x9d, 0xe2, 0x6c, 0x07, 0x05, 0x00, 0x01, 0x00, 0x04, 0x5d,
0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60,
];
let bind2: &[u8] = &[
0x02, 0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0x00, 0xbf, 0xfa, 0xbb, 0xa4, 0x9e, 0x5c,
0x80, 0x61, 0xb5, 0x8b, 0x79, 0x69, 0xa6, 0x32, 0x88, 0x77, 0x01, 0x00, 0x01, 0x00,
0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10,
0x48, 0x60, 0x02, 0x00, 0x00, 0x00, 0x0a, 0x00, 0x01, 0x00, 0x39, 0xa8, 0x2c, 0x39,
0x73, 0x50, 0x06, 0x8d, 0xf2, 0x37, 0x1e, 0x1e, 0xa8, 0x8f, 0x46, 0x98, 0x02, 0x00,
0x02, 0x00, 0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00,
0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00, 0x0b, 0x00, 0x01, 0x00, 0x91, 0x13,
0xd0, 0xa7, 0xef, 0xc4, 0xa7, 0x96, 0x0c, 0x4a, 0x0d, 0x29, 0x80, 0xd3, 0xfe, 0xbf,
0x00, 0x00, 0x01, 0x00, 0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8,
0x08, 0x00, 0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x01, 0x00,
0xcc, 0x2b, 0x55, 0x1d, 0xd4, 0xa4, 0x0d, 0xfb, 0xcb, 0x6f, 0x86, 0x36, 0xa6, 0x57,
0xc3, 0x21, 0x02, 0x00, 0x01, 0x00, 0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11,
0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00, 0x0d, 0x00,
0x01, 0x00, 0x43, 0x7b, 0x07, 0xee, 0x85, 0xa8, 0xb9, 0x3a, 0x0f, 0xf9, 0x83, 0x70,
0xe6, 0x0b, 0x4f, 0x33, 0x02, 0x00, 0x02, 0x00, 0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c,
0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00,
0x0e, 0x00, 0x01, 0x00, 0x9c, 0x6a, 0x15, 0x8c, 0xd6, 0x9c, 0xa6, 0xc3, 0xb2, 0x9e,
0x62, 0x9f, 0x3d, 0x8e, 0x47, 0x73, 0x02, 0x00, 0x02, 0x00, 0x04, 0x5d, 0x88, 0x8a,
0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60, 0x02, 0x00,
0x00, 0x00, 0x0f, 0x00, 0x01, 0x00, 0xc8, 0x4f, 0x32, 0x4b, 0x70, 0x16, 0xd3, 0x01,
0x12, 0x78, 0x5a, 0x47, 0xbf, 0x6e, 0xe1, 0x88, 0x03, 0x00, 0x00, 0x00, 0x04, 0x5d,
0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60,
0x02, 0x00, 0x00, 0x00,
];
let mut dcerpc_state = DCERPCState::new();
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(bind1, Direction::ToServer)
);
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(bind2, Direction::ToServer)
);
if let Some(ref bind) = dcerpc_state.bind {
assert_eq!(16, bind.numctxitems);
assert_eq!(0, dcerpc_state.bytes_consumed); // because the buffer is cleared after a query is complete
}
}

#[test]
pub fn test_parse_bind_frag_2() {
let request1: &[u8] = &[
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x01, 0x00,
0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01, 0x02, 0x03, 0x04,
0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
];
let request2: &[u8] = &[0x0D, 0x0E];
let request3: &[u8] = &[0x0F, 0x10, 0x11, 0x12, 0x13, 0x14];
let mut dcerpc_state = DCERPCState::new();
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(request1, Direction::ToServer)
);
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(request2, Direction::ToServer)
);
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(request3, Direction::ToServer)
);
let tx = &dcerpc_state.transactions[0];
assert_eq!(20, tx.stub_data_buffer_ts.len());
}

#[test]
pub fn test_parse_bind_frag_3() {
let request1: &[u8] = &[
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x01, 0x00,
0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01, 0x02, 0x03, 0x04,
0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
];
let mut dcerpc_state = DCERPCState::new();
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(request1, Direction::ToServer)
);
}

#[test]
pub fn test_parse_bind_frag_4() {
let request1: &[u8] = &[
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x01, 0x00,
0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01, 0x02, 0x03, 0x04,
0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
];
let mut dcerpc_state = DCERPCState::new();
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(request1, Direction::ToServer)
);
}

#[test]
pub fn test_parse_dcerpc_frag_1() {
let fault: &[u8] = &[
0x05, 0x00, 0x03, 0x03, 0x10, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, 0xf7, 0x06, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
];
let request1: &[u8] = &[0x05, 0x00];
let request2: &[u8] = &[
0x00, 0x03, 0x10, 0x00, 0x00, 0x00, 0x24, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
];
let mut dcerpc_state = DCERPCState::new();
assert_eq!(
AppLayerResult::err(),
dcerpc_state.handle_input_data(fault, Direction::ToServer)
);
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(request1, Direction::ToServer)
);
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(request2, Direction::ToServer)
);
let tx = &dcerpc_state.transactions[0];
assert_eq!(12, tx.stub_data_buffer_ts.len());
}

#[test]
pub fn test_parse_dcerpc_frag_2() {
let request1: &[u8] = &[
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00, 0x24, 0x00, 0x00, 0x00, 0x01, 0x00,
0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01, 0x02, 0x03, 0x04,
0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
];
let request2: &[u8] = &[0x05, 0x00];
let request3: &[u8] = &[
0x00, 0x03, 0x10, 0x00, 0x00, 0x00, 0x24, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
];
let mut dcerpc_state = DCERPCState::new();
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(request1, Direction::ToServer)
);
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(request2, Direction::ToServer)
);
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(request3, Direction::ToServer)
);
}

#[test]
pub fn test_parse_dcerpc_back_frag() {
let bind_ack1: &[u8] = &[
0x05, 0x00, 0x0c, 0x03, 0x10, 0x00, 0x00, 0x00, 0x44, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xb8, 0x10, 0xb8, 0x10, 0x48, 0x1a, 0x00, 0x00,
];
let bind_ack2: &[u8] = &[
0x0c, 0x00, 0x5c, 0x50, 0x49, 0x50, 0x45, 0x5c, 0x6c, 0x73, 0x61, 0x73, 0x73, 0x00,
0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x5d, 0x88, 0x8a,
0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60, 0x02, 0x00,
0x00, 0x00,
];
let mut dcerpc_state = DCERPCState::new();
dcerpc_state.data_needed_for_dir = Direction::ToClient;
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(bind_ack1, Direction::ToClient)
);
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(bind_ack2, Direction::ToClient)
);
}

#[test]
// Check if the parser accepts bind pdus that have context ids starting
// from a non-zero value.
Expand Down Expand Up @@ -2485,29 +2275,4 @@ mod tests {
assert_eq!(expected_uuid2, back.accepted_uuid_list[0].uuid);
}
}

#[test]
pub fn test_parse_dcerpc_frag_3() {
let request1: &[u8] = &[
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00, 0x26, 0x00, 0x00, 0x00, 0x01, 0x00,
0x00, 0x00, 0x0c, 0x00,
];
let request2: &[u8] = &[
0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0A, 0x0B, 0x0C, 0xFF, 0xFF,
];
let mut dcerpc_state = DCERPCState::new();
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(request1, Direction::ToServer)
);
assert_eq!(
AppLayerResult::ok(),
dcerpc_state.handle_input_data(request2, Direction::ToServer)
);
let tx = &dcerpc_state.transactions[0];
assert_eq!(2, tx.opnum);
assert_eq!(0, tx.ctxid);
assert_eq!(14, tx.stub_data_buffer_ts.len());
}
}

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