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jmap

(★ 129)

Unreal Engine reflection data format and extractor

파일 탐색기

최종 버전 다운로드 (.zip)

- - release.yml
- - lib.rs
- Cargo.toml
- - containers.rs
  - diag.rs
  - header.rs
  - lib.rs
  - main.rs
  - mem.rs
  - objects.rs
  - proc_name.rs
  - structs.rs
  - vtable.rs
- - Gospel.toml
- Cargo.toml
- release.toml
- create_dump1.png
- create_dump2.png
- uebinja.png
- frida_minidump.py
- mdwrite.py
- - lib.rs
- Cargo.toml
- - compression.rs
  - lib.rs
  - main.rs
- - 5.4.3-34507850+++UE5+Release-5.4-DeepSpace7.usmap
  - drg.usmap
  - ExplicitEnumValuesExample.usmap
- Cargo.toml
- drg.json
.gitignore
Cargo.lock
Cargo.toml
CHANGELOG.md
dist-workspace.toml
LICENSE
README.md
release.toml

# 설치 가이드

1. 코드 내려받기

git clone https://github.com/trumank/jmap

깃허브에서 프로젝트 코드 전체를 내 컴퓨터로 내려받습니다.

cd jmap

방금 내려받은 프로젝트 폴더 안으로 이동합니다.

2. Rust

보통 추천

사전 준비물

Git GitHub에서 프로젝트 코드를 내려받으려면 필요합니다.
Rust (rustup) rustup으로 설치하면 cargo도 함께 설치됩니다.

cargo run --release -- --pid 12345 output.jmap

빌드 후 바로 실행까지 진행합니다.

cargo run --release -- --minidump FSD-Win64-Shipping.DMP output.jmap

빌드 후 바로 실행까지 진행합니다.

cargo run --release -- --minidump FSD-Win64-Shipping.DMP output.usmap

빌드 후 바로 실행까지 진행합니다.

✅ cargo build가 에러 없이 끝나면 성공입니다. target/ 폴더에 실행 파일이 생성됩니다.

이 레포의 README에 적힌 실제 명령어를 그대로 가져왔습니다.

// repository documentation

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# jmap

JSON based format for storing UObject reflection data, vtable layouts, version information, among other things extracted from compiled Unreal Engine binaries.

## [jmap_dumper](jmap_dumper)

Dump from running process:
```console
cargo run --release -- --pid 12345 output.jmap
```

Dump from existing full-memory minidump:
```console
cargo run --release -- --minidump FSD-Win64-Shipping.DMP output.jmap
```

Or output to .usmap:
```console
cargo run --release -- --minidump FSD-Win64-Shipping.DMP output.usmap
```

In case of message "Error: Resolution: EngineVersion: expected at least one value", set an environment variable for patternsleuth library:

`$env:PATTERNSLEUTH_RES_EngineVersion="ver"` e.g. `$env:PATTERNSLEUTH_RES_EngineVersion="5.6"`

In case of message like "Error: Resolution: FNamePool: found 2 unique values [7FF6DB379E00, 7FFDB90C6140]", set an environment variable for patternsleuth library:

`$env:PATTERNSLEUTH_RES_FNamePool=0x<one of the found FNamePool values>` e.g. `$env:PATTERNSLEUTH_RES_FNamePool=0x7FF6DB379E00`

## output
The output JSON is a superset of .usmap and contains enough information to fully reconstruct a matching project in the Unreal Engine editor.

It contains:
- Reflection data for: Classes, Functions, Structs, Enums, etc.
- Class Default Objects (CDOs) and property values

It also does light VTables analysis and dumps approximate VTables for all UObjects found.

## [jmap](jmap)
Crate for reading/writing .jmap files.

## [usmap](usmap)
Crate for reading/writing .usmap files (legacy binary format created by https://github.com/TheNaeem/UnrealMappingsDumper still used by many tools today).

## [ue_binja](ue_binja)
Binary Ninja plugin to reconstruct classes and structs from reflection data.

![Binary Ninja preview](https://raw.githubusercontent.com/trumank/jmap/master/media/uebinja.png)

## creating a full game dump

For development and debugging purposes, it is handy to make a full memory dump of the game. Windows makes this really easy via task manager:

![create minidump via task manager](https://raw.githubusercontent.com/trumank/jmap/master/media/create_dump1.png)

After a moment or two the dump should complete:
![minidump complete](https://raw.githubusercontent.com/trumank/jmap/master/media/create_dump2.png)