skills.rest
HLND2T
HLND2TOFFICIAL
Explore all skills by this author →
GitHub

generate-signature-for-vfuncoffset

Generate a minimal byte signature for a virtual-function offset instruction using IDA Pro MCP.

60|11|Updated Jan 23, 2026
Search Tags:#reverse-engineering#binary-analysis#signature-generation#ida-pro-mcp#vfunc-offset#instruction-signatures
One-click install
npx skills add https://github.com/HLND2T/CS2_VibeSignatures --skill generate-signature-for-vfuncoffset-hlnd2t
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: generate-signature-for-vfuncoffset
Source: https://github.com/HLND2T/CS2_VibeSignatures/tree/main/.claude/skills/generate-signature-for-vfuncoffset
Command: npx skills add https://github.com/HLND2T/CS2_VibeSignatures --skill generate-signature-for-vfuncoffset-hlnd2t

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill enables precise identification of instructions that contain a virtual-function offset by generating a fixed, unique byte signature using IDA Pro MCP, streamlining binary analysis workflows.

Core Features & Use Cases

  • Generate and validate a minimal, unique signature anchored at the instruction that carries the vfunc offset.
  • Use this signature to reliably locate the target instruction across binary versions and loaders during reverse-engineering tasks.
  • Use Case: When encountering a call qword ptr [rax+538h], produce a signature that fixes the offset bytes in the first instruction to ensure repeatable matching.

Quick Start

Provide the target instruction address and the expected vfunc offset to generate the signature.

Frequently Asked Questions about generate-signature-for-vfuncoffset

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I generate a byte signature for a vfunc offset instruction using IDA Pro?▼

To generate a vfunc offset signature, you provide the target instruction address and the expected virtual-function offset to the IDA Pro MCP, which outputs a minimal, unique byte signature anchored at that specific instruction.

What is a vfunc offset signature used for in binary analysis?▼

A vfunc offset signature is a fixed byte pattern used to reliably locate a specific virtual-function call instruction, such as call qword ptr [rax+offset], across different binary versions and loaders during reverse engineering.

Does generating instruction signatures for vfunc offsets work with CS2-style binaries?▼

Yes, generating instruction signatures for vfunc offsets is specifically applicable to CS2-style binaries, allowing you to identify and fix offset bytes in instructions to ensure repeatable matching across binary updates.

What do I need to provide IDA Pro MCP to create a minimal unique byte signature?▼

You need to provide a known target instruction address, the expected vfunc offset value, and an active IDA Pro MCP connection to generate the minimal unique byte signature and related metadata.

Why does my binary signature match break across different versions of the same binary?▼

Signature matches break when instruction bytes change between versions, but fixing the vfunc offset bytes in a generated signature anchors the target instruction, ensuring repeatable and reliable matching across updates.

Related Skills

Explore More Software Engineering Skills→
hzqsthzqst
60

generate-signature-for-vfuncoffset

Generate and validate byte signatures for instructions with virtual-function offsets via IDA Pro MCP.

Community
Advanced
HLND2THLND2T
60

generate-signature-for-patch

Generate and validate unique byte signatures for runtime binary patching.

Official
Advanced
HLND2THLND2T
60

find-CBaseEntity_Use

Locate the CBaseEntity_Use virtual function in CS2 server binaries with IDA Pro MCP.

Official
Intermediate
hzqsthzqst
60

find-CBaseEntity_StartTouch-AND-CBaseEntity_Touch-AND-CBaseEntity_EndTouch

Locate CBaseEntity touch virtual functions in CS2 binaries via IDA Pro MCP.

Community
Advanced