Case study

Harry Potter and the Half-Blood Prince: function-level Windows decompilation

Harry Potter and the Half-Blood Prince — Decompilation reconstructs functions from the Windows hp6.exe as C and readable MASM, then compares rebuilt machine code with the executable. A Capstone-based tool emits C candidates from x86 control flow; the author reports 4,689 exact function matches among 10,992 inventoried functions.

Targets: Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06

Stars: 2
Last commit: 2026-10-14
Language: C

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: A local hp6.exe version 1.0.0.1 matching the README fingerprint is required.
Prerequisites: Python and an x86 MSVC compiler are required; reproducing current matches uses a compatible VC8 SP1 compiler.
Limits: The author reports 4,689 of 10,992 inventoried functions matching exactly; remaining functions include fragments and other difficult cases.
License: No licence file in the repository.

Cite

BibTeX

@misc{harry-potter-half-blood-prince-decomp-case,
  title = {{Harry Potter and the Half-Blood Prince: function-level Windows decompilation}},
  howpublished = {\url{https://github.com/MidacoYT/HarryPotterAndTheHalfBloodPrince-Decompilation}},
  url = {https://github.com/MidacoYT/HarryPotterAndTheHalfBloodPrince-Decompilation},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/harry-potter-half-blood-prince-decomp-case/}}
}

Plain text

Harry Potter and the Half-Blood Prince: function-level Windows decompilation. https://github.com/MidacoYT/HarryPotterAndTheHalfBloodPrince-Decompilation (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/harry-potter-half-blood-prince-decomp-case/

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Primary sources

README.md GitHub · MidacoYT/HarryPotterAndTheHalfBloodPrince-Decompilation · Revision bd7642e