What is analyzing-golang-malware-internals?

A static-analysis guide for investigating malware compiled from Go, a programming language. It recovers function names, the Go version, and package paths even when ordinary symbol names were removed from the binary.

Use it to confirm a binary was built with Go, recover names from its internal function table, list embedded modules, and document suspicious components.

It helps explain a large or stripped Go executable without running it. Embedded package names and recovered functions can reveal what the program contains and which libraries it uses.

analyzing-golang-malware-internals — Skill by meltedinhex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add meltedinhex/analyst-ai-pack --skill analyzing-golang-malware-internals

Clone the repo

git clone --depth 1 https://github.com/meltedinhex/analyst-ai-pack

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/meltedinhex/analyst-ai-pack/analyzing-golang-malware-internals/github.svg)](https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/analyzing-golang-malware-internals)

Your own site

<a href="https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/analyzing-golang-malware-internals"><img src="https://agentmods.dev/badge/skills/meltedinhex/analyst-ai-pack/analyzing-golang-malware-internals/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/analyzing-golang-malware-internals"><img src="https://agentmods.dev/badge/skills/meltedinhex/analyst-ai-pack/analyzing-golang-malware-internals.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 679 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00065	$0.00679
Opus 5.5	$0.00026	$0.00272
Sonnet 5.5	$0.00013	$0.00136
Haiku 4.5	$0.00006	$0.00068

Measured 2mo ago against content hash b9e61805c3e4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

analyzing-golang-malware-internals scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/analyst.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/analyzing-golang-malware-internals/SKILL.md · 89 lines

What it actually says

Analyzing Golang Malware Internals

When to Use

You have a Go-compiled binary (often large, statically linked) and standard symbol recovery fails because user symbols are stripped.
You need function names from the pclntab, the Go version, and embedded package/module paths.

Do not use this for non-Go binaries — confirm the Go build signature first. This skill reads the binary statically and executes nothing.

Prerequisites

The Go binary (read inertly).

Safety & Handling

Read bytes statically; treat strings as untrusted data.

Workflow

Step 1: Confirm it is Go and get the version

python scripts/analyst.py info sample.bin

Looks for the Go build ID, the go1.x version string, and runtime. references.

Step 2: Recover function names from pclntab

The pclntab (preceded by a magic like \xfb\xff\xff\xff/\xf0\xff\xff\xff across Go versions) contains function name strings; extract main.*, package-qualified, and runtime.* names.

Step 3: Enumerate package paths

List embedded import/module paths (github.com/..., vendored deps) to fingerprint capabilities and third-party libraries.

Step 4: Map and document

Map suspicious packages (networking, crypto, exec) to behavior and ATT&CK.

Validation

The Go build signature/version is confirmed before deeper parsing.
Recovered names include plausible main.*/package-qualified functions.
Package paths are real module paths, not random strings.

Pitfalls

pclntab magic differs across Go versions; try the known set.
Obfuscators (garble) rename symbols and strip build info — names may be hashed.
Confusing vendored library code with the author's main package.

References

See references/api-reference.md for the analyzer.
Go pclntab/buildinfo references (linked in frontmatter).

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 89 lines · 65 tokens per session scan A b9e61805c3e4

Subscribe to this mod's changes

analyzing-golang-malware-internals is a skill published in the GitHub repository meltedinhex/analyst-ai-pack (24 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 65 tokens to every session and 679 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Go Hardware and IoT Languages agent-skills detection-engineering dfir malware-analysis mitre-attack pclntab reverse-engineering stripped-binaries symbol-recovery

analyzing-golang-malware-internals next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
analyzing-golang-malware-internalsmeltedinhex/analyst-ai-pack	Skill	24	4mo ago	Apache-2.0	A	65	Claude Code, Codex
analyzing-malicious-pdf-with-peepdf26zl/cybersec-toolkit	Skill	89	4d ago	MIT	A	43	Claude Code
analyzing-malicious-pdf-with-peepdfautohandai/community-skills	Skill	13	3mo ago	Apache-2.0	A	43	Claude Code, Codex
analyzing-golang-malware-with-ghidraYoungmaidainon/Agent-Level-Up	Skill	4	2mo ago	MIT	A	95	Claude Code, Codex
analyzing-malicious-pdf-with-peepdfRobotFlow-Labs/skills-repo	Skill	2	7mo ago	none	A	43	Claude Code, Codex
analyzing-golang-malware-with-ghidra26zl/cybersec-toolkit	Skill	89	4d ago	MIT	A	40	Claude Code
analyzing-golang-malware-with-ghidraplurigrid/asi	Skill	72	7d ago	MIT	A	40	Claude Code