analyzing-pe-imports-and-exports

analyzing-pe-imports-and-exports is a skill for Claude Code, Codex from meltedinhex/analyst-ai-pack. It costs 76 tokens per session (762 once invoked), scanned A, original, Apache-2.0.

A static-analysis guide for reading the import and export tables of a Windows PE file. A PE file is a common Windows executable or library format; these tables list code it uses or exposes.

In plain words
What is it for?
Use it to list imported functions, group them by behavior, detect possible dynamic API loading, and inspect exported entry points in suspicious Windows DLLs.
Why use it?
It provides a quick indication of possible networking, encryption, process injection, or persistence behavior before deeper reverse engineering. It also warns that hidden or dynamically loaded code may not appear in the table.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to list imported functions, group them by behavior, detect possible dynamic API loading, and inspect exported entry points in suspicious Windows DLLs.

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Install with agentmods
npx agentmods add skills/meltedinhex/analyst-ai-pack/analyzing-pe-imports-and-exports
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-pe-imports-and-exports
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.

agentmods badge for analyzing-pe-imports-and-exports

README.md
[![agentmods](https://agentmods.dev/badge/skills/meltedinhex/analyst-ai-pack/analyzing-pe-imports-and-exports/github.svg)](https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/analyzing-pe-imports-and-exports)
Your own site
<a href="https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/analyzing-pe-imports-and-exports"><img src="https://agentmods.dev/badge/skills/meltedinhex/analyst-ai-pack/analyzing-pe-imports-and-exports/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.

agentmods 80×15 button for analyzing-pe-imports-and-exports

Your own site · 80×15
<a href="https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/analyzing-pe-imports-and-exports"><img src="https://agentmods.dev/badge/skills/meltedinhex/analyst-ai-pack/analyzing-pe-imports-and-exports.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 762 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00076 $0.00762
Opus 5 $0.00038 $0.00381
Sonnet 5 $0.00015 $0.00152
Haiku 4.5 $0.00008 $0.00076

Measured 12d ago against content hash bd6de8769fc5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

analyzing-pe-imports-and-exports 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 12d 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-pe-imports-and-exports/SKILL.md · 94 lines

How it starts

The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Analyzing PE Imports and Exports

When to Use

  • You have a Windows PE and want a fast capability read from its imported APIs.
  • You need to identify suspicious API clusters (injection, crypto, anti-analysis) before deeper reversing.
  • You are inspecting a malicious DLL's exports to find its callable entry points.

Do not use the import table alone as a verdict — packers stub imports and malware resolves APIs dynamically; a thin IAT can hide real capability.

Prerequisites

  • pefile (pip install pefile); the sample handled inertly in the lab.

Safety & Handling

  • Parse the PE statically; never run it during import analysis.
  • Keep the sample password-protected at rest and reference it by hash.

Workflow

Step 1: Parse imports

Enumerate imported DLLs and functions from the import directory (IAT). A sparse IAT plus a GetProcAddress/LoadLibrary pair suggests dynamic resolution.

python scripts/analyst.py imports sample.exe

Step 2: Map APIs to behaviors

Cluster imports into behavior buckets: networking (Ws2_32, WinINet), process/injection (VirtualAllocEx, WriteProcessMemory, CreateRemoteThread), crypto (Crypt*, bcrypt), persistence (Reg*, service APIs), and anti-analysis (IsDebuggerPresent).

Step 3: Inspect exports

For DLLs, list exports (by name and ordinal). Unusual export names or a single exported DllRegisterServer/ordinal hint at how the module is invoked.

Step 4: Flag dynamic resolution

Note LoadLibrary/GetProcAddress, ordinal-only imports, and tiny IATs as signs that the real capability is resolved at runtime — escalate to dynamic/RE workflows.

Validation

  • Import behavior buckets are consistent with other static signals (strings, sections).
  • A thin or stubbed IAT is recognized as a packing/dynamic-resolution indicator, not "benign".
  • Exports of a malicious DLL are enumerated with their invocation method identified.

Pitfalls

  • Trusting a small IAT as low-capability when imports are resolved dynamically.
  • Ignoring delay-load and bound imports.
  • Reading ordinal-only imports without resolving them to function names.

Read the full file on GitHub · 94 lines

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.

  1. 12d ago First seen · 94 lines · 76 tokens per session scan A bd6de8769fc5

Subscribe to this mod's changes

analyzing-pe-imports-and-exports is a skill published in the GitHub repository meltedinhex/analyst-ai-pack (22 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 76 tokens to every session and 762 once invoked, about $0.0004 per session on Opus 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.

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