> For the complete documentation index, see [llms.txt](https://0x29a.gitbook.io/0x29a-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://0x29a.gitbook.io/0x29a-docs/memory-and-analysis/sym.md).

# sym

**analysis · DbgHelp · global: `sym`**

Debug symbol resolution (PDB, when available) via DbgHelp. `SymInitialize` only runs on the first call — the script pays nothing for it if `sym.*` is never used.

### `sym.name(addr) -> string | nil`

Returns `"FunctionName+0x10"` if `addr` falls inside a known symbol (with an offset when it's not the exact start).

### `sym.addr(name) -> addr | nil`

The reverse: resolves a name to an address. Accepts `"CreateFileW"` or `"kernel32!CreateFileW"` to disambiguate between modules.

### `sym.info(addr) -> {name, addr, size, displacement} | nil`

A structured version of `sym.name`, with the symbol's exact address and its size.

### `sym.refresh()`

Reloads symbols for the loaded modules — call this after a new module shows up (e.g. after the game itself calls `LoadLibrary`).

```lua
sym.refresh()
print(sym.name(some_addr))
```

Used internally by the global helper [`disas()`](/0x29a-docs/introduction/first-script.md) to annotate each instruction with the name of the symbol containing it, when available.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://0x29a.gitbook.io/0x29a-docs/memory-and-analysis/sym.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.