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|
use std::ffi::OsStr;
use std::os::windows::ffi::OsStrExt;
use std::os::windows::ffi::OsStringExt;
use std::ptr;
use std::{error::Error, process};
use std::{ffi::OsString, mem};
use winapi::um::{
libloaderapi::GetModuleFileNameW,
processthreadsapi::{GetExitCodeProcess, ResumeThread},
synchapi::WaitForSingleObject,
};
use winapi::{shared::minwindef, um::errhandlingapi::GetLastError};
use winapi::{
shared::winerror::ERROR_INSUFFICIENT_BUFFER,
um::winbase::{INFINITE, WAIT_FAILED},
};
use clap::{App, AppSettings, Arg};
static REDIRECT_DLL: &'static str = "zluda_redirect.dll";
static ZLUDA_DLL: &'static [u16] = wstr!("nvcuda.dll");
include!("../../zluda_redirect/src/payload_guid.rs");
pub fn main_impl() -> Result<(), Box<dyn Error>> {
let matches = App::new("ZLUDA injector")
.setting(AppSettings::TrailingVarArg)
.arg(
Arg::with_name("EXE")
.help("Path to the executable to be injected with ZLUDA")
.required(true),
)
.arg(
Arg::with_name("ARGS")
.multiple(true)
.help("Arguments that will be passed to <EXE>"),
)
.get_matches();
let exe = matches.value_of_os("EXE").unwrap();
let args: Vec<&OsStr> = matches
.values_of_os("ARGS")
.map(|x| x.collect())
.unwrap_or_else(|| Vec::new());
let mut cmd_line = Vec::<u16>::with_capacity(exe.len() + 2);
cmd_line.push('\"' as u16);
copy_to(exe, &mut cmd_line);
cmd_line.push('\"' as u16);
cmd_line.push(' ' as u16);
args.split_last().map(|(last_arg, args)| {
for arg in args {
cmd_line.reserve(arg.len());
copy_to(arg, &mut cmd_line);
cmd_line.push(' ' as u16);
}
copy_to(last_arg, &mut cmd_line);
});
cmd_line.push(0);
let mut injector_path = get_injector_path()?;
trim_to_parent(&mut injector_path);
let redirect_path = create_redirect_path(&injector_path);
let mut startup_info = unsafe { mem::zeroed::<detours_sys::_STARTUPINFOW>() };
let mut proc_info = unsafe { mem::zeroed::<detours_sys::_PROCESS_INFORMATION>() };
os_call!(
detours_sys::DetourCreateProcessWithDllExW(
ptr::null(),
cmd_line.as_mut_ptr(),
ptr::null_mut(),
ptr::null_mut(),
0,
0,
ptr::null_mut(),
ptr::null(),
&mut startup_info as *mut _,
&mut proc_info as *mut _,
redirect_path.as_ptr() as *const i8,
Option::None
),
|x| x != 0
);
let mut zluda_path = create_zluda_path(injector_path);
os_call!(
detours_sys::DetourCopyPayloadToProcess(
proc_info.hProcess,
&PAYLOAD_GUID,
zluda_path.as_mut_ptr() as *mut _,
(zluda_path.len() * mem::size_of::<u16>()) as u32
),
|x| x != 0
);
os_call!(ResumeThread(proc_info.hThread), |x| x as i32 != -1);
os_call!(WaitForSingleObject(proc_info.hProcess, INFINITE), |x| x
!= WAIT_FAILED);
let mut child_exit_code: u32 = 0;
os_call!(
GetExitCodeProcess(proc_info.hProcess, &mut child_exit_code as *mut _),
|x| x != 0
);
process::exit(child_exit_code as i32)
}
fn trim_to_parent(injector_path: &mut Vec<u16>) {
let slash_idx = injector_path
.iter()
.enumerate()
.rev()
.find_map(|(idx, char)| {
if *char == '/' as u16 || *char == '\\' as u16 {
Some(idx)
} else {
None
}
});
if let Some(idx) = slash_idx {
injector_path.truncate(idx + 1);
}
}
fn create_redirect_path(injector_dir: &[u16]) -> Vec<u8> {
let os_string: OsString = OsString::from_wide(injector_dir);
let mut utf8_string = os_string.to_string_lossy().as_bytes().to_vec();
utf8_string.extend(REDIRECT_DLL.as_bytes());
utf8_string.push(0);
utf8_string
}
fn create_zluda_path(mut injector_dir: Vec<u16>) -> Vec<u16> {
injector_dir.extend(ZLUDA_DLL);
injector_dir
}
fn copy_to(from: &OsStr, to: &mut Vec<u16>) {
for x in from.encode_wide() {
to.push(x);
}
}
fn get_injector_path() -> Result<Vec<u16>, Box<dyn Error>> {
let mut result = vec![0u16; minwindef::MAX_PATH];
let mut copied;
loop {
copied = os_call!(
GetModuleFileNameW(ptr::null_mut(), result.as_mut_ptr(), result.len() as u32),
|x| x != 0
);
if copied != result.len() as u32 {
break;
}
os_call!(GetLastError(), |x| x != ERROR_INSUFFICIENT_BUFFER);
result.resize(result.len() * 2, 0);
}
result.truncate(copied as usize);
Ok(result)
}
|
