Fix EOFError in sam plugin on empty lm/nt hash

fox-it · Dec 9, 2023 · 9f33dd4 · 9f33dd4
1 parent 8bb86ca
commit 9f33dd4
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/dissect/target/plugins/os/windows/sam.py b/dissect/target/plugins/os/windows/sam.py
@@ -388,8 +388,8 @@ def sam(self) -> Iterator[SamRecord]:
                 u_lmpw = v_data[v.lmpw_ofs : v.lmpw_ofs + v.lmpw_len]
                 u_ntpw = v_data[v.ntpw_ofs : v.ntpw_ofs + v.ntpw_len]
 
-                lm_hash = decrypt_single_hash(f.rid, samkey, u_lmpw, almpassword).hex()
-                nt_hash = decrypt_single_hash(f.rid, samkey, u_ntpw, antpassword).hex()
+                lm_hash = decrypt_single_hash(f.rid, samkey, u_lmpw, almpassword).hex() if u_lmpw else ''
+                nt_hash = decrypt_single_hash(f.rid, samkey, u_ntpw, antpassword).hex() if u_ntpw else ''
 
                 yield SamRecord(
                     rid=f.rid,