99955ac0e3
CFGBase treats every Blob as entirely executable. That is right for a raw firmware image, which carries no permission information at all, and wrong for a blob cut out of something that does. A core dump is the case that matters: ELFCore turns each mapping it cannot match to a child object into a Blob, so the process heap, its stack and its guard pages all become code to scan. Consult the blob's segments when it says its permissions are known, and fall back to the old assumption when they are not. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> |
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| .github | ||
| angr | ||
| corpus_tests | ||
| docs | ||
| native | ||
| tests | ||
| .dockerignore | ||
| .git-blame-ignore-revs | ||
| .gitignore | ||
| .pre-commit-config.yaml | ||
| .readthedocs.yml | ||
| Cargo.lock | ||
| Cargo.toml | ||
| COPYRIGHT | ||
| LICENSE | ||
| MANIFEST.in | ||
| pyproject.toml | ||
| README.md | ||
| rust-toolchain.toml | ||
| SECURITY.md | ||
| setup.py | ||
angr
angr is a platform-agnostic binary analysis framework. It is brought to you by the Computer Security Lab at UC Santa Barbara, SEFCOM at Arizona State University, their associated CTF team, Shellphish, the open source community, and @rhelmot.
Project Links
Homepage: https://angr.io
Project repository: https://github.com/angr/angr
Documentation: https://docs.angr.io
API Documentation: https://docs.angr.io/en/latest/api.html
What is angr?
angr is a suite of Python 3 libraries that let you load a binary and do a lot of cool things to it:
- Disassembly and intermediate-representation lifting
- Program instrumentation
- Symbolic execution
- Control-flow analysis
- Data-dependency analysis
- Value-set analysis (VSA)
- Decompilation
The most common angr operation is loading a binary: p = angr.Project('/bin/bash') If you do this in an enhanced REPL like IPython, you can use tab-autocomplete to browse the top-level-accessible methods and their docstrings.
The short version of "how to install angr" is mkvirtualenv --python=$(which python3) angr && python -m pip install angr.
Example
angr does a lot of binary analysis stuff. To get you started, here's a simple example of using symbolic execution to get a flag in a CTF challenge.
import angr
project = angr.Project("angr-doc/examples/defcamp_r100/r100", auto_load_libs=False)
@project.hook(0x400844)
def print_flag(state):
print("FLAG SHOULD BE:", state.posix.dumps(0))
project.terminate_execution()
project.execute()
Quick Start
- Install Instructions
- Documentation as HTML and sources in the angr Github repository
- Dive right in: top-level-accessible methods
- Examples using angr to solve CTF challenges.
- API Reference
- awesome-angr repo