commit a91233aa125dd7954b0565705b2afc5776879635 · victor.earth/memmut

.gitignore

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Cargo.lock

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       +
       name = "windows_aarch64_msvc"

     

       589
       589
       +
       version = "0.52.6"

     

       590
       590
       +
       source = "registry+https://github.com/rust-lang/crates.io-index"

     

       591
       591
       +
       checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"

     

       592
       592
       +
       

     

       593
       593
       +
       [[package]]

     

       594
       594
       +
       name = "windows_i686_gnu"

     

       595
       595
       +
       version = "0.52.6"

     

       596
       596
       +
       source = "registry+https://github.com/rust-lang/crates.io-index"

     

       597
       597
       +
       checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"

     

       598
       598
       +
       

     

       599
       599
       +
       [[package]]

     

       600
       600
       +
       name = "windows_i686_gnullvm"

     

       601
       601
       +
       version = "0.52.6"

     

       602
       602
       +
       source = "registry+https://github.com/rust-lang/crates.io-index"

     

       603
       603
       +
       checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"

     

       604
       604
       +
       

     

       605
       605
       +
       [[package]]

     

       606
       606
       +
       name = "windows_i686_msvc"

     

       607
       607
       +
       version = "0.52.6"

     

       608
       608
       +
       source = "registry+https://github.com/rust-lang/crates.io-index"

     

       609
       609
       +
       checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"

     

       610
       610
       +
       

     

       611
       611
       +
       [[package]]

     

       612
       612
       +
       name = "windows_x86_64_gnu"

     

       613
       613
       +
       version = "0.52.6"

     

       614
       614
       +
       source = "registry+https://github.com/rust-lang/crates.io-index"

     

       615
       615
       +
       checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"

     

       616
       616
       +
       

     

       617
       617
       +
       [[package]]

     

       618
       618
       +
       name = "windows_x86_64_gnullvm"

     

       619
       619
       +
       version = "0.52.6"

     

       620
       620
       +
       source = "registry+https://github.com/rust-lang/crates.io-index"

     

       621
       621
       +
       checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"

     

       622
       622
       +
       

     

       623
       623
       +
       [[package]]

     

       624
       624
       +
       name = "windows_x86_64_msvc"

     

       625
       625
       +
       version = "0.52.6"

     

       626
       626
       +
       source = "registry+https://github.com/rust-lang/crates.io-index"

     

       627
       627
       +
       checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"

     

       628
       628
       +
       

     

       629
       629
       +
       [[package]]

     

       630
       630
       +
       name = "wit-bindgen-rt"

     

       631
       631
       +
       version = "0.33.0"

     

       632
       632
       +
       source = "registry+https://github.com/rust-lang/crates.io-index"

     

       633
       633
       +
       checksum = "3268f3d866458b787f390cf61f4bbb563b922d091359f9608842999eaee3943c"

     

       634
       634
       +
       dependencies = [

     

       635
       635
       +
        "bitflags",

     

       636
       636
       +
       ]

     

       637
       637
       +
       

     

       638
       638
       +
       [[package]]

     

       639
       639
       +
       name = "zerocopy"

     

       640
       640
       +
       version = "0.7.35"

     

       641
       641
       +
       source = "registry+https://github.com/rust-lang/crates.io-index"

     

       642
       642
       +
       checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"

     

       643
       643
       +
       dependencies = [

     

       644
       644
       +
        "byteorder",

     

       645
       645
       +
        "zerocopy-derive 0.7.35",

     

       646
       646
       +
       ]

     

       647
       647
       +
       

     

       648
       648
       +
       [[package]]

     

       649
       649
       +
       name = "zerocopy"

     

       650
       650
       +
       version = "0.8.21"

     

       651
       651
       +
       source = "registry+https://github.com/rust-lang/crates.io-index"

     

       652
       652
       +
       checksum = "dcf01143b2dd5d134f11f545cf9f1431b13b749695cb33bcce051e7568f99478"

     

       653
       653
       +
       dependencies = [

     

       654
       654
       +
        "zerocopy-derive 0.8.21",

     

       655
       655
       +
       ]

     

       656
       656
       +
       

     

       657
       657
       +
       [[package]]

     

       658
       658
       +
       name = "zerocopy-derive"

     

       659
       659
       +
       version = "0.7.35"

     

       660
       660
       +
       source = "registry+https://github.com/rust-lang/crates.io-index"

     

       661
       661
       +
       checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"

     

       662
       662
       +
       dependencies = [

     

       663
       663
       +
        "proc-macro2",

     

       664
       664
       +
        "quote",

     

       665
       665
       +
        "syn",

     

       666
       666
       +
       ]

     

       667
       667
       +
       

     

       668
       668
       +
       [[package]]

     

       669
       669
       +
       name = "zerocopy-derive"

     

       670
       670
       +
       version = "0.8.21"

     

       671
       671
       +
       source = "registry+https://github.com/rust-lang/crates.io-index"

     

       672
       672
       +
       checksum = "712c8386f4f4299382c9abee219bee7084f78fb939d88b6840fcc1320d5f6da2"

     

       673
       673
       +
       dependencies = [

     

       674
       674
       +
        "proc-macro2",

     

       675
       675
       +
        "quote",

     

       676
       676
       +
        "syn",

     

       677
       677
       +
       ]

+14

Cargo.toml

···

       1
       1
       +
       [package]

     

       2
       2
       +
       name = "memmut"

     

       3
       3
       +
       version = "0.1.0"

     

       4
       4
       +
       edition = "2024"

     

       5
       5
       +
       

     

       6
       6
       +
       [dependencies]

     

       7
       7
       +
       anyhow = "1.0.96"

     

       8
       8
       +
       clap = {version = "4.5.31", features = ["derive"]}

     

       9
       9
       +
       env_logger = "0.11.6"

     

       10
       10
       +
       libc = "0.2.170"

     

       11
       11
       +
       log = "0.4.26"

     

       12
       12
       +
       rand = "0.9.0"

     

       13
       13
       +
       rayon = "1.10.0"

     

       14
       14
       +
       rustyline = "15.0.0"

+129

examples/pointers.rs

···

       1
       1
       +
       use rand::Rng;

     

       2
       2
       +
       use std::{

     

       3
       3
       +
           io::{self, Read, Write},

     

       4
       4
       +
           sync::mpsc,

     

       5
       5
       +
           thread,

     

       6
       6
       +
           time::Duration,

     

       7
       7
       +
       };

     

       8
       8
       +
       

     

       9
       9
       +
       // This is a practice program to test if the main programs behaviour works fine

     

       10
       10
       +
       // This program has been validated and confirmed to work as expected with scanmem

     

       11
       11
       +
       

     

       12
       12
       +
       // Structure to hold the "real" game state

     

       13
       13
       +
       struct GameState {

     

       14
       14
       +
           // Internal values that control the actual game state

     

       15
       15
       +
           values: Vec<i32>,

     

       16
       16
       +
       }

     

       17
       17
       +
       

     

       18
       18
       +
       // Structure to manage what's displayed on screen

     

       19
       19
       +
       struct GameDisplay {

     

       20
       20
       +
           // Pointers to copies of values shown to the player

     

       21
       21
       +
           display_values: Vec<Box<i32>>,

     

       22
       22
       +
       }

     

       23
       23
       +
       

     

       24
       24
       +
       impl GameState {

     

       25
       25
       +
           fn new(count: usize, rng: &mut impl Rng) -> Self {

     

       26
       26
       +
               let mut values = Vec::with_capacity(count);

     

       27
       27
       +
               for _ in 0..count {

     

       28
       28
       +
                   values.push(rng.gen_range(1..10));

     

       29
       29
       +
               }

     

       30
       30
       +
               Self { values }

     

       31
       31
       +
           }

     

       32
       32
       +
       

     

       33
       33
       +
           fn get_value(&self, index: usize) -> i32 {

     

       34
       34
       +
               self.values[index]

     

       35
       35
       +
           }

     

       36
       36
       +
       

     

       37
       37
       +
           fn set_value(&mut self, index: usize, value: i32) {

     

       38
       38
       +
               self.values[index] = value;

     

       39
       39
       +
           }

     

       40
       40
       +
       }

     

       41
       41
       +
       

     

       42
       42
       +
       impl GameDisplay {

     

       43
       43
       +
           fn new(count: usize) -> Self {

     

       44
       44
       +
               let mut display_values = Vec::with_capacity(count);

     

       45
       45
       +
               for _ in 0..count {

     

       46
       46
       +
                   display_values.push(Box::new(0));

     

       47
       47
       +
               }

     

       48
       48
       +
               Self { display_values }

     

       49
       49
       +
           }

     

       50
       50
       +
       

     

       51
       51
       +
           fn update_from_state(&mut self, state: &GameState) {

     

       52
       52
       +
               for (i, val) in state.values.iter().enumerate() {

     

       53
       53
       +
                   *self.display_values[i] = *val;

     

       54
       54
       +
               }

     

       55
       55
       +
           }

     

       56
       56
       +
       

     

       57
       57
       +
           fn get_display_ptr(&self, index: usize) -> *const i32 {

     

       58
       58
       +
               &*self.display_values[index] as *const i32

     

       59
       59
       +
           }

     

       60
       60
       +
       

     

       61
       61
       +
           fn get_displayed_value(&self, index: usize) -> i32 {

     

       62
       62
       +
               *self.display_values[index]

     

       63
       63
       +
           }

     

       64
       64
       +
       }

     

       65
       65
       +
       

     

       66
       66
       +
       fn main() {

     

       67
       67
       +
           let mut rng = rand::thread_rng();

     

       68
       68
       +
       

     

       69
       69
       +
           const LEN: usize = 10;

     

       70
       70
       +
       

     

       71
       71
       +
           let mut game_state = GameState::new(LEN, &mut rng);

     

       72
       72
       +
           let mut game_display = GameDisplay::new(LEN);

     

       73
       73
       +
       

     

       74
       74
       +
           game_display.update_from_state(&game_state);

     

       75
       75
       +
       

     

       76
       76
       +
           let (tx, rx) = mpsc::channel();

     

       77
       77
       +
       

     

       78
       78
       +
           thread::spawn(move || {

     

       79
       79
       +
               let mut buffer = [0; 1];

     

       80
       80
       +
               loop {

     

       81
       81
       +
                   if let Ok(_) = io::stdin().read_exact(&mut buffer) {

     

       82
       82
       +
                       let _ = tx.send(());

     

       83
       83
       +
                   }

     

       84
       84
       +
               }

     

       85
       85
       +
           });

     

       86
       86
       +
       

     

       87
       87
       +
           let mut refresh_counter = 0;

     

       88
       88
       +
       

     

       89
       89
       +
           loop {

     

       90
       90
       +
               print!("\x1B[2J\x1B[1;1H");

     

       91
       91
       +
       

     

       92
       92
       +
               refresh_counter += 1;

     

       93
       93
       +
               if refresh_counter >= 3 {

     

       94
       94
       +
                   refresh_counter = 0;

     

       95
       95
       +
                   game_display.update_from_state(&game_state);

     

       96
       96
       +
                   println!("(Display refreshed from game state)");

     

       97
       97
       +
               }

     

       98
       98
       +
       

     

       99
       99
       +
               println!(

     

       100
       100
       +
                   "Memory Scanner Target (Realistic Game Structure) - Press ENTER for new values, Ctrl+C to quit"

     

       101
       101
       +
               );

     

       102
       102
       +
               println!("Displayed values (what you see on screen):");

     

       103
       103
       +
       

     

       104
       104
       +
               for i in 0..LEN {

     

       105
       105
       +
                   let display_value = game_display.get_displayed_value(i);

     

       106
       106
       +
                   let display_ptr = game_display.get_display_ptr(i);

     

       107
       107
       +
                   println!(

     

       108
       108
       +
                       "Value {}: {} (displayed at {:p})",

     

       109
       109
       +
                       i, display_value, display_ptr

     

       110
       110
       +
                   );

     

       111
       111
       +
               }

     

       112
       112
       +
       

     

       113
       113
       +
               println!("\nInternal game state (would be hidden in a real game):");

     

       114
       114
       +
               for i in 0..LEN {

     

       115
       115
       +
                   println!("Value {}: {}", i, game_state.get_value(i));

     

       116
       116
       +
               }

     

       117
       117
       +
       

     

       118
       118
       +
               println!("\nPress ENTER to change all values...");

     

       119
       119
       +
               io::stdout().flush().unwrap();

     

       120
       120
       +
       

     

       121
       121
       +
               if rx.recv_timeout(Duration::from_secs(1)).is_ok() {

     

       122
       122
       +
                   for i in 0..LEN {

     

       123
       123
       +
                       game_state.set_value(i, rng.gen_range(1..10));

     

       124
       124
       +
                   }

     

       125
       125
       +
                   game_display.update_from_state(&game_state);

     

       126
       126
       +
                   refresh_counter = 0;

     

       127
       127
       +
               }

     

       128
       128
       +
           }

     

       129
       129
       +
       }

+55

examples/simple.rs

···

       1
       1
       +
       use rand::Rng;

     

       2
       2
       +
       use std::{

     

       3
       3
       +
           io::{self, Read, Write},

     

       4
       4
       +
           sync::mpsc,

     

       5
       5
       +
           thread,

     

       6
       6
       +
           time::Duration,

     

       7
       7
       +
       };

     

       8
       8
       +
       

     

       9
       9
       +
       // This is a practice program to test if the main programs behaviour works fine

     

       10
       10
       +
       // This program has been validated and confirmed to work as expected with scanmem

     

       11
       11
       +
       

     

       12
       12
       +
       fn main() {

     

       13
       13
       +
           let mut rng = rand::rng();

     

       14
       14
       +
       

     

       15
       15
       +
           // Create an array of 10 random numbers

     

       16
       16
       +
           // const LEN: usize = 10_000_000;

     

       17
       17
       +
           const LEN: usize = 1000;

     

       18
       18
       +
       

     

       19
       19
       +
           let mut numbers: Vec<i32> = vec![0; LEN];

     

       20
       20
       +
       

     

       21
       21
       +
           for i in 0..LEN {

     

       22
       22
       +
               numbers[i] = rng.random_range(1..10);

     

       23
       23
       +
           }

     

       24
       24
       +
       

     

       25
       25
       +
           let (tx, rx) = mpsc::channel();

     

       26
       26
       +
       

     

       27
       27
       +
           thread::spawn(move || {

     

       28
       28
       +
               let mut buffer = [0; 1];

     

       29
       29
       +
               loop {

     

       30
       30
       +
                   if let Ok(_) = io::stdin().read_exact(&mut buffer) {

     

       31
       31
       +
                       let _ = tx.send(());

     

       32
       32
       +
                   }

     

       33
       33
       +
               }

     

       34
       34
       +
           });

     

       35
       35
       +
       

     

       36
       36
       +
           loop {

     

       37
       37
       +
               print!("\x1B[2J\x1B[1;1H");

     

       38
       38
       +
       

     

       39
       39
       +
               println!("Memory Scanner Target - Press ENTER for new values, Ctrl+C to quit");

     

       40
       40
       +
               println!("Current values:");

     

       41
       41
       +
       

     

       42
       42
       +
               for (i, &num) in numbers.iter().take(10).enumerate() {

     

       43
       43
       +
                   println!("Index {}: {}", i, num);

     

       44
       44
       +
               }

     

       45
       45
       +
       

     

       46
       46
       +
               println!("\nPress ENTER to generate new values...");

     

       47
       47
       +
               io::stdout().flush().unwrap();

     

       48
       48
       +
       

     

       49
       49
       +
               if rx.recv_timeout(Duration::from_secs(1)).is_ok() {

     

       50
       50
       +
                   for i in 0..LEN {

     

       51
       51
       +
                       numbers[i] = rng.random_range(1..10);

     

       52
       52
       +
                   }

     

       53
       53
       +
               }

     

       54
       54
       +
           }

     

       55
       55
       +
       }

projectory.toml

···

       1
       1
       +
       name = "memmut"

     

       2
       2
       +
       description = "scanmem alternative with concurrent memory scanning"

     

       3
       3
       +
       tags = ["cli", "utility"]

     

       4
       4
       +
       langs = ["rust"]

+118

src/cli.rs

···

       1
       1
       +
       use anyhow::Result;

     

       2
       2
       +
       use rustyline::Editor;

     

       3
       3
       +
       use rustyline::error::ReadlineError;

     

       4
       4
       +
       

     

       5
       5
       +
       use crate::process::Process;

     

       6
       6
       +
       use crate::scanner::{MemoryScanner, ScanValueType};

     

       7
       7
       +
       

     

       8
       8
       +
       pub fn run_interactive_mode(process_name: &str) -> Result<()> {

     

       9
       9
       +
           println!(

     

       10
       10
       +
               "# Scanning for process \"{}\" like how pgrep -f works",

     

       11
       11
       +
               process_name

     

       12
       12
       +
           );

     

       13
       13
       +
       

     

       14
       14
       +
           let process = Process::find_by_name(process_name)?;

     

       15
       15
       +
           let mut scanner = MemoryScanner::new(process)?;

     

       16
       16
       +
       

     

       17
       17
       +
           println!("Please enter current value, or \"help\" for other commands.");

     

       18
       18
       +
       

     

       19
       19
       +
           let mut rl = Editor::<(), rustyline::history::DefaultHistory>::new()?;

     

       20
       20
       +
           let mut first_scan = true;

     

       21
       21
       +
       

     

       22
       22
       +
           loop {

     

       23
       23
       +
               let prompt = if first_scan {

     

       24
       24
       +
                   "> ".to_string()

     

       25
       25
       +
               } else {

     

       26
       26
       +
                   format!("{}> ", scanner.get_matches_count())

     

       27
       27
       +
               };

     

       28
       28
       +
       

     

       29
       29
       +
               let readline = rl.readline(&prompt);

     

       30
       30
       +
               match readline {

     

       31
       31
       +
                   Ok(line) => {

     

       32
       32
       +
                       let _ = rl.add_history_entry(&line);

     

       33
       33
       +
                       let line = line.trim();

     

       34
       34
       +
       

     

       35
       35
       +
                       if line.is_empty() {

     

       36
       36
       +
                           continue;

     

       37
       37
       +
                       }

     

       38
       38
       +
       

     

       39
       39
       +
                       if line == "help" {

     

       40
       40
       +
                           print_help();

     

       41
       41
       +
                           continue;

     

       42
       42
       +
                       }

     

       43
       43
       +
       

     

       44
       44
       +
                       if line == "exit" || line == "quit" {

     

       45
       45
       +
                           break;

     

       46
       46
       +
                       }

     

       47
       47
       +
       

     

       48
       48
       +
                       if line.starts_with("set ") {

     

       49
       49
       +
                           handle_set_command(&mut scanner, line)?;

     

       50
       50
       +
                           continue;

     

       51
       51
       +
                       }

     

       52
       52
       +
                       match parse_value(line) {

     

       53
       53
       +
                           Ok(value) => {

     

       54
       54
       +
                               if first_scan {

     

       55
       55
       +
                                   match scanner.scan_for_value(value) {

     

       56
       56
       +
                                       Ok(_) => first_scan = false,

     

       57
       57
       +
                                       Err(e) => println!("Error scanning: {}", e),

     

       58
       58
       +
                                   }

     

       59
       59
       +
                               } else {

     

       60
       60
       +
                                   match scanner.filter_matches(value) {

     

       61
       61
       +
                                       Ok(_) => {}

     

       62
       62
       +
                                       Err(e) => println!("Error filtering: {}", e),

     

       63
       63
       +
                                   }

     

       64
       64
       +
                               }

     

       65
       65
       +
                           }

     

       66
       66
       +
                           Err(e) => println!("Invalid value: {}", e),

     

       67
       67
       +
                       }

     

       68
       68
       +
                   }

     

       69
       69
       +
                   Err(ReadlineError::Interrupted) | Err(ReadlineError::Eof) => {

     

       70
       70
       +
                       println!("Exiting...");

     

       71
       71
       +
                       break;

     

       72
       72
       +
                   }

     

       73
       73
       +
                   Err(err) => {

     

       74
       74
       +
                       println!("Error: {}", err);

     

       75
       75
       +
                       break;

     

       76
       76
       +
                   }

     

       77
       77
       +
               }

     

       78
       78
       +
           }

     

       79
       79
       +
       

     

       80
       80
       +
           Ok(())

     

       81
       81
       +
       }

     

       82
       82
       +
       

     

       83
       83
       +
       fn print_help() {

     

       84
       84
       +
           println!("Available commands:");

     

       85
       85
       +
           println!("  <value>      - Search for value or narrow down existing results");

     

       86
       86
       +
           println!("  set <idx> <value> - Set value at the memory address at index <idx>");

     

       87
       87
       +
           println!("  help         - Show this help message");

     

       88
       88
       +
           println!("  exit/quit    - Exit the program");

     

       89
       89
       +
       }

     

       90
       90
       +
       

     

       91
       91
       +
       fn handle_set_command(scanner: &mut MemoryScanner, command: &str) -> Result<()> {

     

       92
       92
       +
           let parts: Vec<&str> = command.split_whitespace().collect();

     

       93
       93
       +
           if parts.len() != 3 {

     

       94
       94
       +
               anyhow::bail!("Invalid set command format. Use: set <idx> <value>");

     

       95
       95
       +
           }

     

       96
       96
       +
       

     

       97
       97
       +
           let idx = match parts[1].parse::<usize>() {

     

       98
       98
       +
               Ok(idx) => idx,

     

       99
       99
       +
               Err(_) => anyhow::bail!("Invalid index: {}", parts[1]),

     

       100
       100
       +
           };

     

       101
       101
       +
       

     

       102
       102
       +
           let value = match parse_value(parts[2])? {

     

       103
       103
       +
               ScanValueType::I32(val) => val,

     

       104
       104
       +
               _ => anyhow::bail!("Only i32 values are currently supported for setting"),

     

       105
       105
       +
           };

     

       106
       106
       +
       

     

       107
       107
       +
           scanner.set_value(idx, value)

     

       108
       108
       +
       }

     

       109
       109
       +
       

     

       110
       110
       +
       fn parse_value(value_str: &str) -> Result<ScanValueType> {

     

       111
       111
       +
           if let Ok(val) = value_str.parse::<i32>() {

     

       112
       112
       +
               return Ok(ScanValueType::I32(val));

     

       113
       113
       +
           }

     

       114
       114
       +
       

     

       115
       115
       +
           // TODO missing implementation for all the other types

     

       116
       116
       +
       

     

       117
       117
       +
           anyhow::bail!("Could not parse '{}' as a valid number", value_str)

     

       118
       118
       +
       }

+28

src/main.rs

···

       1
       1
       +
       mod cli;

     

       2
       2
       +
       mod memory;

     

       3
       3
       +
       mod process;

     

       4
       4
       +
       mod scanner;

     

       5
       5
       +
       

     

       6
       6
       +
       use anyhow::Result;

     

       7
       7
       +
       use clap::Parser;

     

       8
       8
       +
       use log::error;

     

       9
       9
       +
       

     

       10
       10
       +
       #[derive(Parser)]

     

       11
       11
       +
       #[command(author, version, about, long_about = None)]

     

       12
       12
       +
       struct Args {

     

       13
       13
       +
           /// Process name to attach to

     

       14
       14
       +
           process_name: String,

     

       15
       15
       +
       }

     

       16
       16
       +
       

     

       17
       17
       +
       fn main() -> Result<()> {

     

       18
       18
       +
           env_logger::init();

     

       19
       19
       +
           let args = Args::parse();

     

       20
       20
       +
       

     

       21
       21
       +
           match cli::run_interactive_mode(&args.process_name) {

     

       22
       22
       +
               Ok(_) => Ok(()),

     

       23
       23
       +
               Err(e) => {

     

       24
       24
       +
                   error!("Error: {}", e);

     

       25
       25
       +
                   Err(e)

     

       26
       26
       +
               }

     

       27
       27
       +
           }

     

       28
       28
       +
       }

+83

src/memory.rs

···

       1
       1
       +
       use anyhow::Result;

     

       2
       2
       +
       use libc::{c_void, iovec, process_vm_readv, process_vm_writev};

     

       3
       3
       +
       use log::info;

     

       4
       4
       +
       

     

       5
       5
       +
       use crate::process::{MemoryRegion, Process};

     

       6
       6
       +
       

     

       7
       7
       +
       pub struct MemoryReader {

     

       8
       8
       +
           process: Process,

     

       9
       9
       +
       }

     

       10
       10
       +
       

     

       11
       11
       +
       impl MemoryReader {

     

       12
       12
       +
           pub fn new(process: Process) -> Self {

     

       13
       13
       +
               Self { process }

     

       14
       14
       +
           }

     

       15
       15
       +
       

     

       16
       16
       +
           pub fn read_memory(&self, address: usize, size: usize) -> Result<Vec<u8>> {

     

       17
       17
       +
               let mut buffer = vec![0u8; size];

     

       18
       18
       +
       

     

       19
       19
       +
               let local_iov = iovec {

     

       20
       20
       +
                   iov_base: buffer.as_mut_ptr() as *mut c_void,

     

       21
       21
       +
                   iov_len: size,

     

       22
       22
       +
               };

     

       23
       23
       +
       

     

       24
       24
       +
               let remote_iov = iovec {

     

       25
       25
       +
                   iov_base: address as *mut c_void,

     

       26
       26
       +
                   iov_len: size,

     

       27
       27
       +
               };

     

       28
       28
       +
       

     

       29
       29
       +
               let result = unsafe {

     

       30
       30
       +
                   process_vm_readv(

     

       31
       31
       +
                       self.process.pid as libc::pid_t,

     

       32
       32
       +
                       &local_iov,

     

       33
       33
       +
                       1,

     

       34
       34
       +
                       &remote_iov,

     

       35
       35
       +
                       1,

     

       36
       36
       +
                       0,

     

       37
       37
       +
                   )

     

       38
       38
       +
               };

     

       39
       39
       +
       

     

       40
       40
       +
               if result == -1 {

     

       41
       41
       +
                   let err = std::io::Error::last_os_error();

     

       42
       42
       +
                   anyhow::bail!("Failed to read memory at 0x{:x}: {}", address, err);

     

       43
       43
       +
               }

     

       44
       44
       +
       

     

       45
       45
       +
               Ok(buffer)

     

       46
       46
       +
           }

     

       47
       47
       +
       

     

       48
       48
       +
           pub fn write_memory(&self, address: usize, data: &[u8]) -> Result<()> {

     

       49
       49
       +
               let local_iov = iovec {

     

       50
       50
       +
                   iov_base: data.as_ptr() as *mut c_void,

     

       51
       51
       +
                   iov_len: data.len(),

     

       52
       52
       +
               };

     

       53
       53
       +
       

     

       54
       54
       +
               let remote_iov = iovec {

     

       55
       55
       +
                   iov_base: address as *mut c_void,

     

       56
       56
       +
                   iov_len: data.len(),

     

       57
       57
       +
               };

     

       58
       58
       +
       

     

       59
       59
       +
               let result = unsafe {

     

       60
       60
       +
                   process_vm_writev(

     

       61
       61
       +
                       self.process.pid as libc::pid_t,

     

       62
       62
       +
                       &local_iov,

     

       63
       63
       +
                       1,

     

       64
       64
       +
                       &remote_iov,

     

       65
       65
       +
                       1,

     

       66
       66
       +
                       0,

     

       67
       67
       +
                   )

     

       68
       68
       +
               };

     

       69
       69
       +
       

     

       70
       70
       +
               if result == -1 {

     

       71
       71
       +
                   let err = std::io::Error::last_os_error();

     

       72
       72
       +
                   anyhow::bail!("Failed to write memory at 0x{:x}: {}", address, err);

     

       73
       73
       +
               }

     

       74
       74
       +
       

     

       75
       75
       +
               info!("setting *0x{:x} to {:?}...", address, data);

     

       76
       76
       +
               Ok(())

     

       77
       77
       +
           }

     

       78
       78
       +
       

     

       79
       79
       +
           pub fn read_region(&self, region: &MemoryRegion) -> Result<Vec<u8>> {

     

       80
       80
       +
               let size = region.end_addr - region.start_addr;

     

       81
       81
       +
               self.read_memory(region.start_addr, size)

     

       82
       82
       +
           }

     

       83
       83
       +
       }

+109

src/process.rs

···

       1
       1
       +
       use anyhow::Result;

     

       2
       2
       +
       use log::info;

     

       3
       3
       +
       use std::fs;

     

       4
       4
       +
       use std::path::Path;

     

       5
       5
       +
       use std::str::FromStr;

     

       6
       6
       +
       

     

       7
       7
       +
       pub struct Process {

     

       8
       8
       +
           pub pid: i32,

     

       9
       9
       +
           #[allow(dead_code)]

     

       10
       10
       +
           pub name: String,

     

       11
       11
       +
       }

     

       12
       12
       +
       

     

       13
       13
       +
       #[derive(Debug, Clone)]

     

       14
       14
       +
       pub struct MemoryRegion {

     

       15
       15
       +
           pub start_addr: usize,

     

       16
       16
       +
           pub end_addr: usize,

     

       17
       17
       +
           #[allow(dead_code)]

     

       18
       18
       +
           pub permissions: String,

     

       19
       19
       +
           #[allow(dead_code)]

     

       20
       20
       +
           pub offset: usize,

     

       21
       21
       +
           #[allow(dead_code)]

     

       22
       22
       +
           pub pathname: String,

     

       23
       23
       +
       }

     

       24
       24
       +
       

     

       25
       25
       +
       impl Process {

     

       26
       26
       +
           pub fn find_by_name(name: &str) -> Result<Self> {

     

       27
       27
       +
               // Search for process using pgrep-like functionality

     

       28
       28
       +
               let proc_dir = Path::new("/proc");

     

       29
       29
       +
               let mut found_pid = None;

     

       30
       30
       +
       

     

       31
       31
       +
               for entry in fs::read_dir(proc_dir)? {

     

       32
       32
       +
                   let entry = entry?;

     

       33
       33
       +
                   let path = entry.path();

     

       34
       34
       +
       

     

       35
       35
       +
                   if !path.is_dir() {

     

       36
       36
       +
                       continue;

     

       37
       37
       +
                   }

     

       38
       38
       +
       

     

       39
       39
       +
                   let file_name = path.file_name().unwrap().to_string_lossy();

     

       40
       40
       +
                   if !file_name.chars().all(|c| c.is_digit(10)) {

     

       41
       41
       +
                       continue;

     

       42
       42
       +
                   }

     

       43
       43
       +
       

     

       44
       44
       +
                   let pid = i32::from_str(&file_name)?;

     

       45
       45
       +
                   let cmdline_path = path.join("cmdline");

     

       46
       46
       +
       

     

       47
       47
       +
                   if !cmdline_path.exists() {

     

       48
       48
       +
                       continue;

     

       49
       49
       +
                   }

     

       50
       50
       +
       

     

       51
       51
       +
                   let cmdline = fs::read_to_string(cmdline_path)?;

     

       52
       52
       +
                   if cmdline.contains(name) {

     

       53
       53
       +
                       println!("Process found with PID: {}", pid);

     

       54
       54
       +
                       found_pid = Some(pid);

     

       55
       55
       +
                       break;

     

       56
       56
       +
                   }

     

       57
       57
       +
               }

     

       58
       58
       +
       

     

       59
       59
       +
               match found_pid {

     

       60
       60
       +
                   Some(pid) => Ok(Process {

     

       61
       61
       +
                       pid,

     

       62
       62
       +
                       name: name.to_string(),

     

       63
       63
       +
                   }),

     

       64
       64
       +
                   None => anyhow::bail!("Process '{}' not found", name),

     

       65
       65
       +
               }

     

       66
       66
       +
           }

     

       67
       67
       +
       

     

       68
       68
       +
           pub fn get_memory_maps(&self) -> Result<Vec<MemoryRegion>> {

     

       69
       69
       +
               let maps_path = format!("/proc/{}/maps", self.pid);

     

       70
       70
       +
               info!("maps file located at {} opened.", maps_path);

     

       71
       71
       +
       

     

       72
       72
       +
               let maps_content = fs::read_to_string(&maps_path)?;

     

       73
       73
       +
               let mut regions = Vec::new();

     

       74
       74
       +
       

     

       75
       75
       +
               for line in maps_content.lines() {

     

       76
       76
       +
                   let parts: Vec<&str> = line.split_whitespace().collect();

     

       77
       77
       +
                   if parts.len() < 5 {

     

       78
       78
       +
                       continue;

     

       79
       79
       +
                   }

     

       80
       80
       +
       

     

       81
       81
       +
                   let addr_range: Vec<&str> = parts[0].split('-').collect();

     

       82
       82
       +
                   if addr_range.len() != 2 {

     

       83
       83
       +
                       continue;

     

       84
       84
       +
                   }

     

       85
       85
       +
       

     

       86
       86
       +
                   let start_addr = usize::from_str_radix(addr_range[0], 16)?;

     

       87
       87
       +
                   let end_addr = usize::from_str_radix(addr_range[1], 16)?;

     

       88
       88
       +
                   let permissions = parts[1].to_string();

     

       89
       89
       +
       

     

       90
       90
       +
                   // Only add regions with read permission

     

       91
       91
       +
                   if permissions.contains('r') {

     

       92
       92
       +
                       regions.push(MemoryRegion {

     

       93
       93
       +
                           start_addr,

     

       94
       94
       +
                           end_addr,

     

       95
       95
       +
                           permissions,

     

       96
       96
       +
                           offset: usize::from_str_radix(parts[2], 16)?,

     

       97
       97
       +
                           pathname: if parts.len() > 5 {

     

       98
       98
       +
                               parts[5..].join(" ")

     

       99
       99
       +
                           } else {

     

       100
       100
       +
                               String::new()

     

       101
       101
       +
                           },

     

       102
       102
       +
                       });

     

       103
       103
       +
                   }

     

       104
       104
       +
               }

     

       105
       105
       +
       

     

       106
       106
       +
               info!("{} suitable regions found.", regions.len());

     

       107
       107
       +
               Ok(regions)

     

       108
       108
       +
           }

     

       109
       109
       +
       }

+207

src/scanner.rs

···

       1
       1
       +
       use anyhow::Result;

     

       2
       2
       +
       use log::{debug, info};

     

       3
       3
       +
       use rayon::prelude::*;

     

       4
       4
       +
       use std::sync::{Arc, Mutex};

     

       5
       5
       +
       

     

       6
       6
       +
       use crate::memory::MemoryReader;

     

       7
       7
       +
       use crate::process::{MemoryRegion, Process};

     

       8
       8
       +
       

     

       9
       9
       +
       #[derive(Clone, Debug)]

     

       10
       10
       +
       pub enum ScanValueType {

     

       11
       11
       +
           #[allow(dead_code)]

     

       12
       12
       +
           U8(u8),

     

       13
       13
       +
           #[allow(dead_code)]

     

       14
       14
       +
           U16(u16),

     

       15
       15
       +
           #[allow(dead_code)]

     

       16
       16
       +
           U32(u32),

     

       17
       17
       +
           #[allow(dead_code)]

     

       18
       18
       +
           U64(u64),

     

       19
       19
       +
           #[allow(dead_code)]

     

       20
       20
       +
           I8(i8),

     

       21
       21
       +
           #[allow(dead_code)]

     

       22
       22
       +
           I16(i16),

     

       23
       23
       +
           I32(i32),

     

       24
       24
       +
           #[allow(dead_code)]

     

       25
       25
       +
           I64(i64),

     

       26
       26
       +
           #[allow(dead_code)]

     

       27
       27
       +
           F32(f32),

     

       28
       28
       +
           #[allow(dead_code)]

     

       29
       29
       +
           F64(f64),

     

       30
       30
       +
       }

     

       31
       31
       +
       

     

       32
       32
       +
       #[derive(Clone, Debug)]

     

       33
       33
       +
       pub struct MemoryMatch {

     

       34
       34
       +
           pub address: usize,

     

       35
       35
       +
           #[allow(dead_code)]

     

       36
       36
       +
           pub value_type: ScanValueType,

     

       37
       37
       +
       }

     

       38
       38
       +
       

     

       39
       39
       +
       pub struct MemoryScanner {

     

       40
       40
       +
           reader: MemoryReader,

     

       41
       41
       +
           regions: Vec<MemoryRegion>,

     

       42
       42
       +
           matches: Vec<MemoryMatch>,

     

       43
       43
       +
       }

     

       44
       44
       +
       

     

       45
       45
       +
       impl MemoryScanner {

     

       46
       46
       +
           pub fn new(process: Process) -> Result<Self> {

     

       47
       47
       +
               let regions = process.get_memory_maps()?;

     

       48
       48
       +
               let reader = MemoryReader::new(process);

     

       49
       49
       +
       

     

       50
       50
       +
               println!(

     

       51
       51
       +
                   "Successfully attached to process. Found {} readable memory regions.",

     

       52
       52
       +
                   regions.len()

     

       53
       53
       +
               );

     

       54
       54
       +
       

     

       55
       55
       +
               Ok(Self {

     

       56
       56
       +
                   reader,

     

       57
       57
       +
                   regions,

     

       58
       58
       +
                   matches: Vec::new(),

     

       59
       59
       +
               })

     

       60
       60
       +
           }

     

       61
       61
       +
       

     

       62
       62
       +
           pub fn scan_for_value(&mut self, value: ScanValueType) -> Result<()> {

     

       63
       63
       +
               let matches = Arc::new(Mutex::new(Vec::new()));

     

       64
       64
       +
       

     

       65
       65
       +
               self.regions

     

       66
       66
       +
                   .par_iter()

     

       67
       67
       +
                   .enumerate()

     

       68
       68
       +
                   .for_each(|(idx, region)| {

     

       69
       69
       +
                       println!(

     

       70
       70
       +
                           "{:02}/{:03} searching {:x} - {:x}...",

     

       71
       71
       +
                           idx + 1,

     

       72
       72
       +
                           self.regions.len(),

     

       73
       73
       +
                           region.start_addr,

     

       74
       74
       +
                           region.end_addr

     

       75
       75
       +
                       );

     

       76
       76
       +
       

     

       77
       77
       +
                       match self.scan_region(region, &value) {

     

       78
       78
       +
                           Ok(region_matches) => {

     

       79
       79
       +
                               let mut matches_guard = matches.lock().unwrap();

     

       80
       80
       +
                               matches_guard.extend(region_matches);

     

       81
       81
       +
                           }

     

       82
       82
       +
                           Err(e) => {

     

       83
       83
       +
                               debug!(

     

       84
       84
       +
                                   "Error scanning region {:x}-{:x}: {}",

     

       85
       85
       +
                                   region.start_addr, region.end_addr, e

     

       86
       86
       +
                               );

     

       87
       87
       +
                           }

     

       88
       88
       +
                       }

     

       89
       89
       +
       

     

       90
       90
       +
                       print!("........ok\n");

     

       91
       91
       +
                   });

     

       92
       92
       +
       

     

       93
       93
       +
               self.matches = Arc::try_unwrap(matches)

     

       94
       94
       +
                   .expect("Failed to unwrap Arc")

     

       95
       95
       +
                   .into_inner()

     

       96
       96
       +
                   .expect("Failed to unlock Mutex");

     

       97
       97
       +
       

     

       98
       98
       +
               info!("we currently have {} matches.", self.matches.len());

     

       99
       99
       +
               Ok(())

     

       100
       100
       +
           }

     

       101
       101
       +
       

     

       102
       102
       +
           pub fn get_matches_count(&self) -> usize {

     

       103
       103
       +
               self.matches.len()

     

       104
       104
       +
           }

     

       105
       105
       +
       

     

       106
       106
       +
           fn scan_region(

     

       107
       107
       +
               &self,

     

       108
       108
       +
               region: &MemoryRegion,

     

       109
       109
       +
               value: &ScanValueType,

     

       110
       110
       +
           ) -> Result<Vec<MemoryMatch>> {

     

       111
       111
       +
               // Basic implementation that scans a single region for matches

     

       112
       112
       +
               let mut region_matches = Vec::new();

     

       113
       113
       +
       

     

       114
       114
       +
               match self.reader.read_region(region) {

     

       115
       115
       +
                   Ok(memory) => {

     

       116
       116
       +
                       // Simple implementation searching for i32 values

     

       117
       117
       +
                       if let ScanValueType::I32(target) = value {

     

       118
       118
       +
                           let target_bytes = target.to_ne_bytes();

     

       119
       119
       +
       

     

       120
       120
       +
                           for i in (0..memory.len().saturating_sub(4)).step_by(4) {

     

       121
       121
       +
                               let mut matches = true;

     

       122
       122
       +
                               for j in 0..4 {

     

       123
       123
       +
                                   if memory[i + j] != target_bytes[j] {

     

       124
       124
       +
                                       matches = false;

     

       125
       125
       +
                                       break;

     

       126
       126
       +
                                   }

     

       127
       127
       +
                               }

     

       128
       128
       +
       

     

       129
       129
       +
                               if matches {

     

       130
       130
       +
                                   region_matches.push(MemoryMatch {

     

       131
       131
       +
                                       address: region.start_addr + i,

     

       132
       132
       +
                                       value_type: value.clone(),

     

       133
       133
       +
                                   });

     

       134
       134
       +
                               }

     

       135
       135
       +
                           }

     

       136
       136
       +
                       }

     

       137
       137
       +
                       // TODO missing handlers for all other types

     

       138
       138
       +
                   }

     

       139
       139
       +
                   Err(e) => {

     

       140
       140
       +
                       println!(

     

       141
       141
       +
                           "Error reading region {:x}-{:x}: {}",

     

       142
       142
       +
                           region.start_addr, region.end_addr, e

     

       143
       143
       +
                       );

     

       144
       144
       +
                   }

     

       145
       145
       +
               }

     

       146
       146
       +
       

     

       147
       147
       +
               Ok(region_matches)

     

       148
       148
       +
           }

     

       149
       149
       +
           pub fn filter_matches(&mut self, value: ScanValueType) -> Result<()> {

     

       150
       150
       +
               let old_matches = std::mem::take(&mut self.matches);

     

       151
       151
       +
       

     

       152
       152
       +
               for m in old_matches {

     

       153
       153
       +
                   let addr = m.address;

     

       154
       154
       +
       

     

       155
       155
       +
                   let data = match &value {

     

       156
       156
       +
                       ScanValueType::I32(_) => {

     

       157
       157
       +
                           match self.reader.read_memory(addr, 4) {

     

       158
       158
       +
                               Ok(data) => data,

     

       159
       159
       +
                               Err(_) => continue, // Skip if we can't read

     

       160
       160
       +
                           }

     

       161
       161
       +
                       }

     

       162
       162
       +
                       _ => continue,

     

       163
       163
       +
                   };

     

       164
       164
       +
       

     

       165
       165
       +
                   let matched = match &value {

     

       166
       166
       +
                       ScanValueType::I32(target) => {

     

       167
       167
       +
                           if data.len() >= 4 {

     

       168
       168
       +
                               let value_bytes = target.to_ne_bytes();

     

       169
       169
       +
                               data[0] == value_bytes[0]

     

       170
       170
       +
                                   && data[1] == value_bytes[1]

     

       171
       171
       +
                                   && data[2] == value_bytes[2]

     

       172
       172
       +
                                   && data[3] == value_bytes[3]

     

       173
       173
       +
                           } else {

     

       174
       174
       +
                               false

     

       175
       175
       +
                           }

     

       176
       176
       +
                       }

     

       177
       177
       +
                       _ => false,

     

       178
       178
       +
                   };

     

       179
       179
       +
       

     

       180
       180
       +
                   if matched {

     

       181
       181
       +
                       self.matches.push(MemoryMatch {

     

       182
       182
       +
                           address: addr,

     

       183
       183
       +
                           value_type: value.clone(),

     

       184
       184
       +
                       });

     

       185
       185
       +
                   }

     

       186
       186
       +
               }

     

       187
       187
       +
       

     

       188
       188
       +
               println!("..........ok");

     

       189
       189
       +
               info!("we currently have {} matches.", self.matches.len());

     

       190
       190
       +
               Ok(())

     

       191
       191
       +
           }

     

       192
       192
       +
       

     

       193
       193
       +
           pub fn set_value(&self, index: usize, value: i32) -> Result<()> {

     

       194
       194
       +
               if index >= self.matches.len() {

     

       195
       195
       +
                   anyhow::bail!(

     

       196
       196
       +
                       "Index {} out of range (have {} matches)",

     

       197
       197
       +
                       index,

     

       198
       198
       +
                       self.matches.len()

     

       199
       199
       +
                   );

     

       200
       200
       +
               }

     

       201
       201
       +
       

     

       202
       202
       +
               let address = self.matches[index].address;

     

       203
       203
       +
               let data = value.to_ne_bytes();

     

       204
       204
       +
       

     

       205
       205
       +
               self.reader.write_memory(address, &data)

     

       206
       206
       +
           }

     

       207
       207
       +
       }