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find-CNetworkMessages_vtable-decompiles

find-CNetworkMessages_vtable-decompiles is a skill for Claude Code from HLND2T/CS2_VibeSignatures. It costs 114 tokens per session (1,687 once invoked), scanned A, original, MIT.

A reverse-engineering workflow for finding two virtual functions in Counter-Strike 2’s network code with IDA Pro, a tool for examining compiled programs, through an MCP connection.

In plain words
What is it for?
It is for analyzing `networksystem.dll` or `libnetworksystem.so` and resolving the relevant `CNetworkMessages` virtual-function slots.
Why use it?
It guides the agent through locating these functions without guessing or searching blindly.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter.

not rated 67repo today A scan SkillSpector: pass 114 tokens original MIT

Good fit It is for analyzing networksystem.dll or libnetworksystem.so and resolving the relevant CNetworkMessages virtual-function slots.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hlnd2t/cs2_vibesignatures/find-cnetworkmessages_vtable-decompiles
View source ↗ HLND2T/CS2_VibeSignatures
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-cnetworkmessages_vtable-decompiles
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.

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README.md
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Your own site
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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.

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<a href="https://agentmods.dev/skills/hlnd2t/cs2_vibesignatures/find-cnetworkmessages_vtable-decompiles"><img src="https://agentmods.dev/badge/skills/hlnd2t/cs2_vibesignatures/find-cnetworkmessages_vtable-decompiles.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 114 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,687 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00114 $0.01687
Opus 5.5 $0.00046 $0.00675
Sonnet 5.5 $0.00023 $0.00337
Haiku 4.5 $0.00011 $0.00169

Measured 2mo ago against content hash 1695c0400fda, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

find-CNetworkMessages_vtable-decompiles 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.

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-CNetworkMessages_vtable-decompiles/SKILL.md · 176 lines

How it starts

The opening of the file, as written. The whole thing — 176 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Find CNetworkMessages_AllowAdditionalMessageRegistration and CNetworkMessages_IsAdditionalMessageRegistrationAllowed

Locate CNetworkMessages_AllowAdditionalMessageRegistration and CNetworkMessages_IsAdditionalMessageRegistrationAllowed vfuncs in CS2 networksystem.dll or libnetworksystem.so using IDA Pro MCP tools.

Method

1. Load CNetworkMessages_RegisterNetworkFieldChangeCallbackInternal from YAML

ALWAYS Use SKILL /get-func-from-yaml with func_name=CNetworkMessages_RegisterNetworkFieldChangeCallbackInternal.

If the skill returns an error, STOP and report to user.

Otherwise, extract:

  • vfunc_index of CNetworkMessages_RegisterNetworkFieldChangeCallbackInternal
  • vfunc_offset of CNetworkMessages_RegisterNetworkFieldChangeCallbackInternal

2. Load CNetworkMessages VTable from YAML

ALWAYS Use SKILL /get-vtable-from-yaml with class_name=CNetworkMessages.

If the skill returns an error, STOP and report to user.

Otherwise, extract:

  • vtable_numvfunc
  • vtable_entries

3. Resolve the Two Adjacent Slots

Compute the candidate slots:

  • allow_vfunc_index = CNetworkMessages_RegisterNetworkFieldChangeCallbackInternal.vfunc_index + 1
  • allow_vfunc_offset = CNetworkMessages_RegisterNetworkFieldChangeCallbackInternal.vfunc_offset + 8
  • isallowed_vfunc_index = CNetworkMessages_RegisterNetworkFieldChangeCallbackInternal.vfunc_index + 2
  • isallowed_vfunc_offset = CNetworkMessages_RegisterNetworkFieldChangeCallbackInternal.vfunc_offset + 16

Validate that isallowed_vfunc_index < vtable_numvfunc, then read:

  • allow_func_addr = CNetworkMessages_vtable[allow_vfunc_index]
  • isallowed_func_addr = CNetworkMessages_vtable[isallowed_vfunc_index]

This adjacent-slot rule is required because AllowAdditionalMessageRegistration and IsAdditionalMessageRegistrationAllowed immediately follow RegisterNetworkFieldChangeCallbackInternal in the CNetworkMessages vtable.

4. Decompile Both Candidate Functions

Decompile both candidates:

Read the full file on GitHub · 176 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.

  1. 2mo ago First seen · 176 lines · 114 tokens per session scan A 1695c0400fda

Subscribe to this mod's changes

find-CNetworkMessages_vtable-decompiles is a skill published in the GitHub repository HLND2T/CS2_VibeSignatures (67 stars, last pushed today), licensed MIT. It adds 114 tokens to every session and 1,687 once invoked, about $0.0005 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.

DebuggingGame development
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