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I tested it and the shellcode option with sleep jmp gadget "jmp rbx" is not working with your solution don't delete the information of "payloads/Demon/src/Demon.c" and it will work correctly. Actually, you only need to modify the file "payloads/Demon/src/main/MainDll.c" |
ZephrFish
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Jan 22, 2026
Critical bug fixes applied from upstream PRs: - Fix config obfuscation technique assignment (HavocFramework#577) - Fix teamserver unauthenticated DoS vulnerability (HavocFramework#547) - Fix memory leaks in Transport.c (HavocFramework#545) - Fix Demon DLL null pointer crash (HavocFramework#524) - Fix misuse of logger function with error.Error() (HavocFramework#478) - Fix timezone issue in session health display (HavocFramework#459) - Fix typo: swap_endianess -> swap_endianness (HavocFramework#469) New features: - Enhanced --debug flag for connection troubleshooting * Logs connection target, host, port, user * Tracks WebSocket state changes * Logs SSL errors (ignored) * Logs bytes sent/received * Tracks authentication flow with password hash - macOS app bundle build support * New 'make macos-app' target creates .app bundle * New 'make all-all' target builds everything including app * Automatically detects Havoc icon * Installs to /Applications/Havoc.app * Updated 'make clean' to remove app bundle
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Overview
This PR fixes the Demon DLL crash caused by a null pointer dereference.
TLDR:
rundll32 demon.x64.dll,Startwill work again.Details
LdrModulePebis called inDllMainbeforeInstancehas been initialized.Havoc/payloads/Demon/src/main/MainDll.c
Line 47 in 69ce17c
LdrModulePebaccesses the uninitializedInstance, which is a null pointer derefernce at this point of execution, causing the process to crash.Havoc/payloads/Demon/src/core/Win32.c
Line 74 in 69ce17c
I’ve tested the x64 EXE, DLL, and SHC on Windows 11, with
WaitForSingleObjectEx,Foliage,EkkoandZileansleep obfuscation enabled and all binaries are operating well with this update.