Vector35 / Vector35/binaryninja-api

UIDF gets stuck and cannot be cleared, ruining bndb

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#4,288 4 comments 1 reaction 1 assignee View on GitHub

@rssor is already working on this.

Since Jun 7, 2023.

Component: Core Core: Dataflow Effort: Low Impact: High
Dominant language
C++
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Description

Version and Platform (required):

  • Binary Ninja Version: 4272-dev
  • OS: Windows
  • OS Version: 22h2
  • CPU Architecture: x64

Bug Description:
I have a very large, obfuscated function. I can partially deobfuscate by using user informed dataflow to specify values. However, after setting and unsetting values that affect the control flow, they become stuck as permanently set and cannot be cleared. This persists through a save/restore and effectively ruins the bndb.

Steps To Reproduce:
Please provide all steps required to reproduce the behavior:

  1. set and unset control flow affecting variables
  2. see that clear_all_user_var_values does nothing
  3. experience sadness

Expected Behavior:
I expect clear_all_user_var_values to clear all user variable values.

Additional Information:
Feel free to contact me for an example bndb.

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