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Fix GUID_AGE in $METADATA #618

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Aug 17, 2021
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25 changes: 14 additions & 11 deletions drakrun/drakrun/drakpdb.py
Original file line number Diff line number Diff line change
Expand Up @@ -351,7 +351,9 @@ def process_struct(struct_info):
return [struct_info.size, field_info]


def make_pdb_profile(filepath, dll_origin_path=None, dll_path=None):
def make_pdb_profile(
filepath, dll_origin_path=None, dll_path=None, dll_symstore_hash=None
):
pdb = pdbparse.parse(filepath)

try:
Expand Down Expand Up @@ -413,20 +415,21 @@ def make_pdb_profile(filepath, dll_origin_path=None, dll_path=None):
profile[target_key][next_sym_name] = mapped

del mapped_syms
guid = pdb.STREAM_PDB.GUID
guid_str = "%.8X%.4X%.4X%s" % (
guid.Data1,
guid.Data2,
guid.Data3,
guid.Data4.hex().upper(),
pdb_guid = pdb.STREAM_PDB.GUID
pdb_guid_str = "%08x%04x%04x%s" % (
pdb_guid.Data1,
pdb_guid.Data2,
pdb_guid.Data3,
pdb_guid.Data4.hex(),
)
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symstore_hash = "%s%s" % (guid_str, pdb.STREAM_PDB.Age)
base_fn = os.path.splitext(os.path.basename(filepath))[0]
pdb_symstore_hash = "%s%x" % (pdb_guid_str, pdb.STREAM_PDB.Age)
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base_filename = os.path.splitext(os.path.basename(filepath))[0]

profile["$METADATA"] = {
"GUID_AGE": symstore_hash,
"DLL_GUID_AGE": dll_symstore_hash,
"GUID_AGE": pdb_symstore_hash,
"PDBFile": os.path.basename(filepath),
"ProfileClass": base_fn[0].upper() + base_fn[1:].lower(),
"ProfileClass": base_filename[0].upper() + base_filename[1:].lower(),
"Timestamp": pdb.STREAM_PDB.TimeDateStamp.replace(tzinfo=None).strftime(
"%Y-%m-%d %H:%M:%SZ"
),
Expand Down
13 changes: 8 additions & 5 deletions drakrun/drakrun/draksetup.py
Original file line number Diff line number Diff line change
Expand Up @@ -550,7 +550,7 @@ def on_create_rekall_profile_failure(


def create_rekall_profile(injector: Injector, file: DLL, raise_on_error=False):
tmp = None
pdb_tmp_filepath = None
cmd = None
out = None
try:
Expand All @@ -573,11 +573,14 @@ def create_rekall_profile(injector: Injector, file: DLL, raise_on_error=False):
raise Exception("Some error occurred in injector")

guid = pdb_guid(local_dll_path)
tmp = fetch_pdb(guid["filename"], guid["GUID"], PROFILE_DIR)
pdb_tmp_filepath = fetch_pdb(guid["filename"], guid["GUID"], PROFILE_DIR)

logging.debug("Parsing PDB into JSON profile...")
profile = make_pdb_profile(
tmp, dll_origin_path=guest_dll_path, dll_path=local_dll_path
pdb_tmp_filepath,
dll_origin_path=guest_dll_path,
dll_path=local_dll_path,
dll_symstore_hash=guid["GUID"],
)
with open(os.path.join(PROFILE_DIR, f"{file.dest}.json"), "w") as f:
f.write(profile)
Expand Down Expand Up @@ -617,8 +620,8 @@ def create_rekall_profile(injector: Injector, file: DLL, raise_on_error=False):
finally:
safe_delete(local_dll_path)
# was crashing here if the first file reached some exception
if tmp is not None:
safe_delete(os.path.join(PROFILE_DIR, tmp))
if pdb_tmp_filepath is not None:
safe_delete(os.path.join(PROFILE_DIR, pdb_tmp_filepath))


def extract_explorer_pid(
Expand Down