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Fix tracking of DCE-RPC context identifier mappings

Browse source 
This adds previously-missing support for "Alter Context"
request/response PDUs (initial patch contributed by Mark Fernandez).

Also, context ID arguments were added to dce_rpc_bind, dce_rpc_request,
and dce_rpc_response in order to properly track what endpoint/operation
a given opnum maps to.
This commit is contained in:
Jon Siwek 2018-08-23 15:11:38 -05:00
parent 45338b1942
commit 620cd671ba
9 changed files with 210 additions and 27 deletions
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31
testing/btest/scripts/base/protocols/dce-rpc/context.bro Normal file
View file

@ -0,0 +1,31 @@
# @TEST-EXEC: bro -b -C -r $TRACES/dce-rpc/cs_window7-join_stream092.pcap %INPUT >out
# @TEST-EXEC: btest-diff out
# @TEST-EXEC: btest-diff dce_rpc.log
@load base/protocols/dce-rpc
event dce_rpc_bind(c: connection, fid: count, ctx_id: count, uuid: string, ver_major: count, ver_minor: count) &priority=5
{
print fmt("dce_rpc_bind :: fid == %s", fid);
print fmt("dce_rpc_bind :: ctx_id == %s", ctx_id);
print fmt("dce_rpc_bind :: uuid == %s", uuid_to_string(uuid));
}
event dce_rpc_alter_context(c: connection, fid: count, ctx_id: count, uuid: string, ver_major: count, ver_minor: count) &priority=5
{
print fmt("dce_rpc_alter_context :: fid == %s", fid);
print fmt("dce_rpc_alter_context :: ctx_id == %s", ctx_id);
print fmt("dce_rpc_alter_context :: uuid == %s", uuid_to_string(uuid));
}
event dce_rpc_bind_ack(c: connection, fid: count, sec_addr: string) &priority=5
{
print fmt("dce_rpc_bind_ack :: fid == %s", fid);
print fmt("dce_rpc_bind_ack :: sec_addr == %s", sec_addr);
}
event dce_rpc_alter_context_resp(c: connection, fid: count) &priority=5
{
print fmt("dce_rpc_alter_context_resp :: fid == %s", fid);
}