Vector35 / Vector35/binaryninja-api

HLIL expression folding removing non-pure function call

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#7,638 2 comments 0 reactions 0 assignees View on GitHub

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Component: Core Core: HLIL Impact: Medium
Dominant language
C++
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Merged PRs (30d)
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Description

Version and Platform (required):

Bug Description:
BN ommited call to a function

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

  1. Open provided binary at 0x140005e60
  2. Open disassembly and Pseudo C
  3. Notice that pseudo C doesn't show sub_140005ee0

Expected Behavior:
sub_140005ee0 should be in decompilation

Binary:
frezerovshik.zip

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Open the provided frezerovshik.zip binary at 0x140005e60 and compare its disassembly with the Pseudo C output. Investigate why the call to sub_140005ee0 is omitted; done when that call is retained in the decompilation for the supplied binary.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
reverse-engineering
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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