reveng-malware-ghidra

Reverse engineers malware binaries using NSA's Ghidra disassembler and decompiler to understand internal logic, cryptographic routines, C2 protocols, and evasion techniques at the assembly and pseudo-C level. Activates for requests involving malware reverse engineering, disassembly analysis, decompilation, binary analysis, or understanding malware internals.

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Repositório: Undermybelt/hermes-skills
Última atividade na origem: 7 de junho de 2026 às 07:23
Idioma detectado do SKILL.md: inglês
Estrelas: 6
Forks: 1

Opções de instalação

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npx skills add https://github.com/Undermybelt/hermes-skills --skill reveng-malware-ghidra

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Leia o SKILL.md e os arquivos complementares exibidos pelo SkillsMP antes de decidir se vai instalar.

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4 arquivos

SKILL.md

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anti-entropy-governance

Use when retiring old logic, collapsing duplicate owners, removing fallbacks, or touching schema, persistence, or source-of-truth boundaries while deciding whether to delete old paths, retain compatibility, or stop for confirmation.

2026-06-07

brainstorming

Use when defining new features, product behavior, UI/component design, architecture choices, contract changes, or ambiguous medium/high-complexity work before implementation.

2026-06-07

communicating-concisely

Use when the user asks for caveman mode, fewer tokens, brief responses, compressed communication, or otherwise explicitly requests a much shorter answer.

2026-06-07

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name	reveng-malware-ghidra
description	Reverse engineers malware binaries using NSA's Ghidra disassembler and decompiler to understand internal logic, cryptographic routines, C2 protocols, and evasion techniques at the assembly and pseudo-C level. Activates for requests involving malware reverse engineering, disassembly analysis, decompilation, binary analysis, or understanding malware internals.
domain	cybersecurity
subdomain	malware-analysis
tags	["malware","reverse-engineering","Ghidra","disassembly","decompilation"]
version	1.0.0
author	mahipal
license	Apache-2.0
nist_csf	["DE.AE-02","RS.AN-03","ID.RA-01","DE.CM-01"]

Reverse Engineering Malware with Ghidra

When to Use

Static and dynamic analysis have identified suspicious functionality that requires deeper code-level understanding
You need to reverse engineer C2 communication protocols, encryption algorithms, or custom obfuscation
Understanding the exact exploit mechanism or vulnerability targeted by a malware sample
Extracting hardcoded configuration data (C2 addresses, encryption keys, campaign IDs) embedded in compiled code
Developing precise YARA rules or detection signatures based on unique code patterns

Do not use for initial triage of unknown samples; perform static analysis with PEStudio and behavioral analysis with Cuckoo first.

Prerequisites

Ghidra 11.x installed (download from https://ghidra-sre.org/) with JDK 17+
Analysis VM isolated from production network (Windows or Linux host)
Familiarity with x86/x64 assembly language and Windows API conventions
PDB symbol files for Windows system DLLs to improve decompilation accuracy
Ghidra scripts repository (ghidra_scripts) for automated analysis tasks
Secondary reference: IDA Free or Binary Ninja for cross-validation of analysis results

Workflow

Step 1: Create Project and Import Binary

Set up a Ghidra project and import the malware sample:

1. Launch Ghidra: ghidraRun (Linux) or ghidraRun.bat (Windows)
2. File -> New Project -> Non-Shared Project -> Select directory
3. File -> Import File -> Select malware binary
4. Ghidra auto-detects format (PE, ELF, Mach-O) and architecture
5. Accept default import options (or specify base address if known)
6. Double-click imported file to open in CodeBrowser
7. When prompted, run Auto Analysis with default analyzers enabled

Headless analysis for automation:

# Run Ghidra headless analysis with decompiler
/opt/ghidra/support/analyzeHeadless /tmp/ghidra_project MalwareProject \
  -import suspect.exe \
  -postScript ExportDecompilation.py \
  -scriptPath /opt/ghidra/scripts/ \
  -deleteProject

Step 2: Identify Key Functions and Entry Points

Navigate the binary to locate critical code sections:

Navigation Strategy:
━━━━━━━━━━━━━━━━━━━
1. Start at entry point (OEP) - follow execution from _start/WinMain
2. Check Symbol Tree for imported functions (Window -> Symbol Tree)
3. Search for cross-references to suspicious APIs:
   - VirtualAlloc/VirtualAllocEx (memory allocation for injection)
   - CreateRemoteThread (remote thread injection)
   - CryptEncrypt/CryptDecrypt (encryption operations)
   - InternetOpen/HttpSendRequest (C2 communication)
   - RegSetValueEx (persistence via registry)
4. Use Search -> For Strings to find embedded URLs, IPs, and paths
5. Check the Functions window sorted by size (large functions often contain core logic)

Term	Definition
Disassembly	Converting machine code bytes into human-readable assembly language instructions; Ghidra's Listing view shows disassembled code
Decompilation	Lifting assembly code to pseudo-C representation for easier analysis; Ghidra's Decompile window provides this view
Cross-Reference (XREF)	Reference showing where a function or data address is called from or used; essential for tracing code execution flow
Control Flow Graph (CFG)	Visual representation of all possible execution paths through a function; reveals branching logic and loops
Original Entry Point (OEP)	The actual start address of the malware code after unpacking; packers redirect execution through an unpacking stub first
Function Signature	The return type, name, and parameter types of a function; applying correct signatures improves decompiler output quality
Ghidra Script	Python or Java automation script executed within Ghidra to perform batch analysis, pattern searching, or data extraction

reveng-malware-ghidra

Opções de instalação

Revise os arquivos de origem

Reverse Engineering Malware with Ghidra

When to Use

Prerequisites

Workflow

Step 1: Create Project and Import Binary

Step 2: Identify Key Functions and Entry Points

Reverse Engineering Malware with Ghidra

When to Use

Prerequisites

Workflow

Step 1: Create Project and Import Binary

Step 2: Identify Key Functions and Entry Points

Step 3: Analyze Decompiled Code

Step 4: Trace C2 Communication Logic

Step 5: Analyze Encryption and Obfuscation

Step 6: Document Findings and Create Detection Signatures

Key Concepts

Tools & Systems

Common Scenarios

Scenario: Reversing Custom C2 Protocol

Output Format

reveng-malware-ghidra

Informações da origem

Opções de instalação

Revise os arquivos de origem

Mais deste repositório

Mais deste repositório

Reverse Engineering Malware with Ghidra

When to Use

Prerequisites

Workflow

Step 1: Create Project and Import Binary

Step 2: Identify Key Functions and Entry Points

Reverse Engineering Malware with Ghidra

When to Use

Prerequisites

Workflow

Step 1: Create Project and Import Binary

Step 2: Identify Key Functions and Entry Points

Step 3: Analyze Decompiled Code

Step 4: Trace C2 Communication Logic

Step 5: Analyze Encryption and Obfuscation

Step 6: Document Findings and Create Detection Signatures

Key Concepts

Tools & Systems

Common Scenarios

Scenario: Reversing Custom C2 Protocol

Output Format