The FastSymApi server is a Fast API server designed for debugging and development environments. It allows users to download and cache symbols from Microsoft, Google, and Mozilla symbol servers. Additionally, users can easily add support for other symbol servers.
When clients connect to FastSymApi and attempt to download a symbol, the server first checks if the symbol exists within its ./fastsymapi/symbols cache. If found, the server returns the symbol; otherwise, it responds with a status 404 and proceeds to download the symbol. On subsequent requests, if the symbol is already downloaded and cached, the server returns it, either compressed using GZIP or decompressed based on the presence of the Accept-Encoding: gzip header. GZIP compression reduces bandwidth usage and improves download speed for clients.
FastSymApi has been tested and works with the following tools:
- x64dbg
- WinDbg
- Symchk
Supports the following symbol servers:
- http://msdl.microsoft.com/download/symbols
- http://chromium-browser-symsrv.commondatastorage.googleapis.com
- http://symbols.mozilla.org
Clone the repository
git clone https://github.com/P1tt1cus/FastSymApi
Install the requirements
pip install requirements.txt
Start the server
uvicorn fastsymapi:app --host 0.0.0.0 --port 80
Debug Mode
uvicorn fastsymapi:app --reload
pytest fastsymapi_tests.py
options >> preferences >> misc
Symbol store
http://FastSymApiServerIp/
.sympath srv*C:\symbols*http://FastSymApiServerIp/