Vector35 / Vector35/binaryninja-api
BN does not use field of the structure if structure have only one field
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Component: UI
Effort: Low
Impact: Low
UI: Linear
- Dominant language
- C++
- Stars
- 1.3k
- Forks
- 298
- Avg merge
- 5d 5h
- Merged PRs (30d)
- 19
Description
Binary Ninja Version: 3.4.4090-dev
Platform: Windows 11 Version 22H2
Structure:
struct SERVICE_DESCRIPTIONA
{
char* lpDescription;
};
HLIL:
Info = "My description"
ChangeServiceConfig2A(svc_handle, SERVICE_CONFIG_DESCRIPTION, &Info)
I expect it to be like this:
Info.lpDescription = "My description"
I've tried it with integer field, it's same.
Test code:
#include <stdio.h>
struct test {
int sy;
};
int main() {
struct test t;
t.sy = 42;
printf("%d", t.sy);
t.sy = 40;
return 0;
}
HLIL:
14001187c struct test var_f4 = 0x2a
14001188d j_printf("%d", 0x2a)
140011892 struct test var_f4_1 = 0x28
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the supplied C++ structure example and inspect its HLIL output, including the SERVICE_DESCRIPTIONA case and the integer-field case. The work is done when a single-field structure is represented through its named field rather than as a scalar value in HLIL.
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