What is find-CNetChan_CanPacket?

A reverse-engineering procedure for finding the Counter-Strike 2 function CNetChan::CanPacket in a compiled program. It uses IDA Pro to recover the function and its virtual-table position in the Windows or Linux networking library.

Use it to locate CanPacket, verify it against nearby networking functions, and output its address, size, signature, and virtual-table slot.

It provides a fallback when a fixed function signature or string reference no longer works after a new build changes the compiled code.

find-CNetChan_CanPacket — Skill for Claude Code by HLND2T

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 HLND2T/CS2_VibeSignatures --skill find-cnetchan_canpacket

Clone the repo

git clone --depth 1 https://github.com/HLND2T/CS2_VibeSignatures

Made for: Claude Code.

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/hlnd2t/cs2_vibesignatures/find-cnetchan_canpacket/github.svg)](https://agentmods.dev/skills/hlnd2t/cs2_vibesignatures/find-cnetchan_canpacket)

Your own site

<a href="https://agentmods.dev/skills/hlnd2t/cs2_vibesignatures/find-cnetchan_canpacket"><img src="https://agentmods.dev/badge/skills/hlnd2t/cs2_vibesignatures/find-cnetchan_canpacket/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/hlnd2t/cs2_vibesignatures/find-cnetchan_canpacket"><img src="https://agentmods.dev/badge/skills/hlnd2t/cs2_vibesignatures/find-cnetchan_canpacket.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 153 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,166 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	$0.00153	$0.03166
Opus 5.5	$0.00061	$0.01266
Sonnet 5.5	$0.00031	$0.00633
Haiku 4.5	$0.00015	$0.00317

Measured 20d ago against content hash b11ea8bb1e6f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

find-CNetChan_CanPacket 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 20d ago.

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.

.claude/skills/find-CNetChan_CanPacket/SKILL.md · 232 lines

How it starts

The opening of the file, as written. The whole thing — 232 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Find CNetChan_CanPacket (final-guarantee fallback)

Recover CNetChan::CanPacket in CS2 networksystem.dll / libnetworksystem.so using IDA Pro MCP tools.

This is the Agent fallback for the find-CNetChan_CanPacket skill: it runs only when the preprocessor returned failure. The preprocessor tries two things and either can miss on a new build:

reuse the previous build's func_sig — breaks when the prologue is rewritten;
reuse the "%s: !CanPacket() - m_bSuppressingTransmit." xref string — breaks when the single call site moves or the string literal relocates.

Your job is to locate the function by semantic anchors that survive those changes, then emit the YAML.

Realworld Function References

Read the platform-relevant real-world YAMLs before searching in IDA. They provide concrete disassembly, decompiler output, and semantic anchors, and they document the neighbouring functions you must distinguish the target from. Treat their addresses and offsets as reference-build values only; verify every result against the current binary.

ida_preprocessor_scripts/references/networksystem/CNetChan_ParseMessagesDemo.windows.yaml
ida_preprocessor_scripts/references/networksystem/CNetChan_ParseMessagesDemo.linux.yaml
ida_preprocessor_scripts/references/networksystem/CNetChan_ParseMessagesDemoInternal.windows.yaml
ida_preprocessor_scripts/references/networksystem/CNetChan_ParseMessagesDemoInternal.linux.yaml
ida_preprocessor_scripts/references/networksystem/CNetChan_ParseNetMessageShowFilter.windows.yaml
ida_preprocessor_scripts/references/networksystem/CNetChan_ParseNetMessageShowFilter.linux.yaml
bin_artifacts/14191/networksystem/CNetChan_CanPacket.windows.yaml
bin_artifacts/14191/networksystem/CNetChan_CanPacket.linux.yaml
bin_artifacts/14191/networksystem/CNetChan_SetTimeout.windows.yaml
bin_artifacts/14191/networksystem/CNetChan_SetTimeout.linux.yaml
bin_artifacts/14191/networksystem/CNetChan_UpdateMessageStats.windows.yaml
bin_artifacts/14191/networksystem/CNetChan_UpdateMessageStats.linux.yaml
bin_artifacts/14191/networksystem/CNetChan_vtable.windows.yaml
bin_artifacts/14191/networksystem/CNetChan_vtable.linux.yaml

Read the full file on GitHub · 232 lines

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.

20d ago Changed b11ea8bb1e6f
21d ago First seen · 232 lines · 153 tokens per session scan A 833c51f12c3a

Subscribe to this mod's changes

find-CNetChan_CanPacket is a skill published in the GitHub repository HLND2T/CS2_VibeSignatures (67 stars, last pushed today), licensed MIT. It adds 153 tokens to every session and 3,166 once invoked, about $0.0006 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 2026-10-17.

Debugging

find-CNetChan_CanPacket next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
find-CNetChan_CanPacketHLND2T/CS2_VibeSignatures	Skill	67	today	MIT	A	153	Claude Code
systematic-debuggingopen-metadata/OpenMetadata	Skill	16k	yesterday	Apache-2.0	A	37	Claude Code
log-error-digestzebbern/claude-code-guide	Skill	4.7k	3d ago	MIT	A	71	Claude Code, Codex
cwv-optimizeradobe/skills	Skill	319	yesterday	Apache-2.0	A	112	Claude Code
ci-fixersipyourdrink-ltd/bernstein	Skill	1.2k	yesterday	Apache-2.0	A	15	Claude Code, Codex
incident-response-incident-responsermyndharis/antigravity-skills	Skill	1.9k	23d ago	MIT	A	36	Claude Code
triaging-web-analytics-supportPostHog/posthog	Skill	41k	yesterday	none	A	151	Claude Code, Codex