Known issues and limitations

These are items we want to let you know about:

• Links to change Axion's current transition from Jupyter no longer exist: In previous version, you could use Jupyter's Display function on Transition object to display a link that would then select this transition in Axion's view. The same mechanism existed for memory locations. This no longer is available in esReven 2023. To mitigate this issue you can use use the Python Sessions object to produce the same effect, or simply copy / paste the transition number in Axion's "Jump to transition" field.

• Symbol information being swapped to disk prevents OSSI resolution: In some cases, memory pages required by Reven to resolve the OSSI are swapped to disk before a scenario is recorded, which leads to missing information about some modules (e.g. ntoskrnl.exe) in the replayed scenario. To mitigate this issue you can create VMs with more RAM so that swap is less used.

• The Axion layout is not fully saved: When starting Axion after an upgrade, changes made to the size of the left and right columns of widgets may not be saved. If this happens, then remove the $DATA/reven/config/axion-geometry.config file. The layout will be reset to default on the next Axion startup and changes will be saved as expected on future launches of Axion.

• In case Axion is unresponsive on some scenarios, try to delete the strings resource and restart the Reven server on this scenario.

• Only a single taint can run concurrently per Reven scenario: currently, starting a second taint, even from a different Axion or the Python API, will cancel the first running taint. Besides, if two clients (such as two Axion sessions) are involved, the first client may display mixed taint results.

• When using the auto-record functionality, the replay operation may fail at the start of the trace with the following error: detect_infinite_loops: Assertion 'false' failed. Performing a new scenario recording usually fixes the issue.