- 1 year ago
Trying to Read Process Memory with windows_sys::Win32::System::Diagnostics::Debug::ReadProcessMemory in rust
To read process memory using the windows_sys
crate in Rust, you can utilize the ReadProcessMemory
function from the win32::system::diagnostics::debug
module. Here's an example of how you can do this:
Add the
windows-sys
crate as a dependency in yourCargo.toml
file:toml[dependencies]
windows-sys = "0.126.0"
Import the necessary modules and functions in your Rust code:
rustuse windows_sys::System::Diagnostics::Debug::{OpenProcess, CloseHandle, ReadProcessMemory};
use windows_sys::System::Diagnostics::Debug::PROCESS_ALL_ACCESS;
use windows_sys::Windows::Win32::Foundation::HANDLE;
use windows_sys::Windows::Win32::System::Diagnostics::Debug::DebugProcess;
use std::ptr::null_mut;
Write a function to read process memory:
rustfn read_process_memory(process_id: u32, address: *const std::ffi::c_void, buffer: &mut [u8]) -> Result<usize, String> {
unsafe {
let process_handle = OpenProcess(PROCESS_ALL_ACCESS, false, process_id);
if process_handle == HANDLE(0) {
return Err("Failed to open process".to_string());
}
let result = ReadProcessMemory(process_handle, address, buffer.as_mut_ptr() as _, buffer.len(), null_mut());
CloseHandle(process_handle);
if result.is_err() {
return Err("Failed to read process memory".to_string());
}
Ok(result.unwrap() as usize)
}
}
Use the
read_process_memory
function in your code to read the memory of a specific process:rustfn main() {
let process_id = 1234; // Replace with the actual process ID of the target process
let address = 0x12345678 as *const std::ffi::c_void; // Replace with the actual memory address to read
let buffer_size = 1024; // Specify the size of the buffer to read
let mut buffer = vec![0; buffer_size];
match read_process_memory(process_id, address, &mut buffer) {
Ok(bytes_read) => {
println!("Read {} bytes from process memory", bytes_read);
// Process the read buffer here
}
Err(error) => {
println!("Error: {}", error);
}
}
}
Replace the process_id
with the actual process ID of the target process you want to read memory from. Adjust the address
and buffer_size
variables according to your specific use case.
Please note that working with low-level system APIs like reading process memory can be risky and may have legal and ethical implications. Ensure that you have the necessary permissions and abide by the applicable laws and policies when working with process memory.