trailofbits / trailofbits/pe-parse
Error 9: Bad magic for valid .exe
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- Dominant language
- C++
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Description
Hi, I'm getting the following error when parsing the a .exe file - unfortunately I can't attach it here as the data is sensitive
The file can be opened via CFF Explorer without any problems
ErrString: Bad magic
ErrLoc: ParsePEFromBuffer:2528
Err: 9
⚠️ - we are performing static analysis on suspicious binaries and the attached file may not be safe to execute, therefore I have renamed it to .bin and zipped it into a password protected file - the password is donotexec.
It seems pe-parse can't get the nameSection form nameVA
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Research direction
Start at ParsePEFromBuffer around line 2528 and trace how the section name is obtained from nameVA. Reproduce the failure with a comparable valid .exe, then confirm that the parser no longer reports Err 9: Bad magic for valid PE files.
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