1 files changed, 157 insertions, 0 deletions

diff --git a/job.c b/job.c
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--- /dev/null
+++ b/job.c
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+/*
+ * Copyright (c) 2004 Security Architects Corporation. All rights reserved.
+ *
+ * Module Name:
+ *
+ *              job.c
+ *
+ * Abstract:
+ *
+ *              This module implements various job object hooking routines.
+ *
+ * Author:
+ *
+ *              Eugene Tsyrklevich 25-Mar-2004
+ *
+ * Revision History:
+ *
+ *              None.
+ */
+
+
+#include <NTDDK.h>
+#include "job.h"
+#include "policy.h"
+#include "pathproc.h"
+#include "hookproc.h"
+#include "accessmask.h"
+#include "learn.h"
+#include "log.h"
+
+
+#ifdef ALLOC_PRAGMA
+#pragma alloc_text (INIT, InitJobHooks)
+#endif
+
+
+fpZwCreateJobObject     OriginalNtCreateJobObject = NULL;
+fpZwOpenJobObject       OriginalNtOpenJobObject = NULL;
+
+
+/*
+ * HookedNtCreateJobObject()
+ *
+ * Description:
+ *              This function mediates the NtCreateJobObject() system service and checks the
+ *              provided job object name against the global and current process security policies.
+ *
+ *              NOTE: ZwCreateJobObject creates or opens a job object. [NAR]
+ *
+ * Parameters:
+ *              Those of NtCreateJobObject().
+ *
+ * Returns:
+ *              STATUS_ACCESS_DENIED if the call does not pass the security policy check.
+ *              Otherwise, NTSTATUS returned by NtCreateJobObject().
+ */
+
+NTSTATUS
+NTAPI
+HookedNtCreateJobObject
+(
+        OUT PHANDLE JobHandle,
+        IN ACCESS_MASK DesiredAccess,
+        IN POBJECT_ATTRIBUTES ObjectAttributes
+)
+{
+        PCHAR   FunctionName = "HookedNtCreateJobObject";
+
+
+        HOOK_ROUTINE_START(JOB);
+
+
+        ASSERT(OriginalNtCreateJobObject);
+
+        rc = OriginalNtCreateJobObject(JobHandle, DesiredAccess, ObjectAttributes);
+
+
+        HOOK_ROUTINE_FINISH(JOB);
+}
+
+
+
+/*
+ * HookedNtOpenJobObject()
+ *
+ * Description:
+ *              This function mediates the NtOpenJobObject() system service and checks the
+ *              provided job object name against the global and current process security policies.
+ *
+ *              NOTE: ZwOpenJobObject opens a job object. [NAR]
+ *
+ * Parameters:
+ *              Those of NtOpenJobObject().
+ *
+ * Returns:
+ *              STATUS_ACCESS_DENIED if the call does not pass the security policy check.
+ *              Otherwise, NTSTATUS returned by NtOpenJobObject().
+ */
+
+NTSTATUS
+NTAPI
+HookedNtOpenJobObject
+(
+        OUT PHANDLE JobHandle,
+        IN ACCESS_MASK DesiredAccess,
+        IN POBJECT_ATTRIBUTES ObjectAttributes
+)
+{
+        PCHAR   FunctionName = "HookedNtOpenJobObject";
+
+
+        HOOK_ROUTINE_START(JOB);
+
+
+        ASSERT(OriginalNtOpenJobObject);
+
+        rc = OriginalNtOpenJobObject(JobHandle, DesiredAccess, ObjectAttributes);
+
+
+        HOOK_ROUTINE_FINISH(JOB);
+}
+
+
+
+/*
+ * InitJobHooks()
+ *
+ * Description:
+ *              Initializes all the mediated job object operation pointers. The "OriginalFunction" pointers
+ *              are initialized by InstallSyscallsHooks() that must be called prior to this function.
+ *
+ *              NOTE: Called once during driver initialization (DriverEntry()).
+ *
+ * Parameters:
+ *              None.
+ *
+ * Returns:
+ *              TRUE to indicate success, FALSE if failed.
+ */
+
+BOOLEAN
+InitJobHooks()
+{
+        if ( (OriginalNtCreateJobObject = (fpZwCreateJobObject) ZwCalls[ZW_CREATE_JOBOBJECT_INDEX].OriginalFunction) == NULL)
+        {
+                LOG(LOG_SS_JOB, LOG_PRIORITY_DEBUG, ("InitJobObjectHooks: OriginalNtCreateJobObject is NULL\n"));
+                return FALSE;
+        }
+
+        if ( (OriginalNtOpenJobObject = (fpZwOpenJobObject) ZwCalls[ZW_OPEN_JOBOBJECT_INDEX].OriginalFunction) == NULL)
+        {
+                LOG(LOG_SS_JOB, LOG_PRIORITY_DEBUG, ("InitJobObjectHooks: OriginalNtOpenJobObject is NULL\n"));
+                return FALSE;
+        }
+
+        return TRUE;
+}