offensive-tools/re/x64dbg/SKILL.md
User-mode debugger for Windows x64/x86 with plugin ecosystem for malware analysis, unpacking, and vulnerability research. Use when dynamically analyzing PE malware, unpacking obfuscated executables, or tracing Windows API calls.
npx skillsauth add aeondave/malskill x64dbgInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Windows debugger for dynamic malware analysis, unpacking, and API tracing.
x96dbg.exe (launcher auto-selects x32/x64)F2 on instruction, or bp CreateRemoteThreadF9 | Step over: F8 | Step into: F7| Panel | Purpose | |-------|---------| | CPU | Disassembly + registers + stack + hex | | Log | API calls, plugin output | | Breakpoints | Manage all BPs | | Memory Map | Virtual memory regions | | References | XREFs to selected | | Symbols | Module imports/exports |
| Action | Key / Command |
|--------|--------------|
| Run / Pause | F9 |
| Step Over | F8 |
| Step Into | F7 |
| Execute till return | Ctrl+F9 |
| Set breakpoint | F2 |
| Breakpoint on API | bp VirtualAlloc in command bar |
| Follow in dump | Ctrl+D on address |
| Search strings | Ctrl+F in disassembly |
Unpack malware:
jmp eax/rax after decryption loop)Find C2 callback:
bp WS2_32.connect
bp WS2_32.send
F9 → examine stack args
| File | When to load |
|------|--------------|
| references/ | Plugin list and unpack methodology |
development
Auth/lab ref: Unicorn Engine CPU-only emulation for shellcode, decryptors, custom VM handlers, instruction tracing, memory hooks, and register-level experiments.
development
Auth/lab ref: Renode board and SoC simulation for MCU/RTOS firmware, UART/GPIO/peripheral modeling, GDB remote debugging, REPL platforms, and RESC scripts.
development
Auth/lab ref: Qiling OS-layer binary emulation for PE/ELF/Mach-O/UEFI/shellcode with rootfs, syscall/API hooks, filesystem mapping, and runtime patching.
databases
Auth/lab ref: QEMU user-mode and full-system emulation for cross-arch binaries, firmware, kernels, disks, serial consoles, networking, and GDB stubs.