radius2 1.0.3

a fast symbolic execution framework using r2
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//use crate::state::State;

#[test]
fn looper() {
    use crate::radius::{Radius, RadiusOption};

    let options = vec!(RadiusOption::Sims(false)); // RadiusOption::Debug(true));
    let mut radius = Radius::new_with_options(Some("../tests/looper"), &options);
    radius.r2api.cmd("e asm.arch=arm.v35").unwrap();
    let state = radius.call_state(0x100003f4c);
    //let state = radius.entry_state(&vec!("looper".to_owned()), &vec!());
    let mut new_state = radius.run_until(state, 0x100003fb4, &[]).unwrap();
    let x0 = new_state.registers.get("x0");
    println!("{:?}", x0);
    assert_eq!(x0.as_u64(), Some(1837180037));
}

#[test]
fn hello() {
    use crate::radius::{Radius, RadiusOption};
    let options = vec!(RadiusOption::Debug(true));
    let mut radius = Radius::new_with_options(Some("../tests/hello"), &options);
    let state = radius.call_state(0x00001149);
    let mut new_state = radius.run_until(state, 0x1163, &[]).unwrap();
    println!("{:?}", new_state.registers.get("eax"))
}

#[test]
fn strstuff() {
    use crate::radius::Radius;
    use crate::value::Value;

    let mut radius = Radius::new("../tests/strstuff");
    let main = radius.r2api.get_address("main").unwrap();
    let mut state = radius.call_state(main);

    let bv = state.bv("flag", 10*8);
    let addr: u64 = 0x100000;
    let len = 10;
    state.memory.write_value(addr+8, &Value::Concrete(addr+24, 0), 8);
    state.memory.write_value(addr+24, &Value::Symbolic(bv.clone(), 0), len);
    state.memory.write_value(addr+34, &Value::Concrete(0, 0), 8);
    state.registers.set("rsi", Value::Concrete(addr, 0));

    let mut new_state = radius.run_until(state, 0x1208, &[0x120f]).unwrap();
    println!("{:?}", new_state.evaluate_string(&bv))
}

#[test]
fn simple() {
    use crate::radius::Radius;
    use crate::value::Value;

    let mut radius = Radius::new("../tests/simple");
    let mut state = radius.call_state(0x5fa);

    let bv = state.bv("num", 32);
    state.registers.set("edi", Value::Symbolic(bv.clone(), 0));
    let mut new_state = radius.run_until(state, 0x60b, &[0x612]).unwrap();

    if let Value::Concrete(val, _t) = new_state.evaluate(&bv).unwrap() {
        assert_eq!(val, 2);
    }
}

#[test]
fn multi() {
    use crate::radius::{Radius, RadiusOption};

    let options = [RadiusOption::Debug(true)];
    let mut radius = Radius::new_with_options(Some("../tests/multi"), &options);
    let state = radius.entry_state(&["multi", "~~~~~"], &[]);
    let mut new_state = radius.run_until(state, 0x11c2, &[0x11c9]).unwrap();

    let arg = new_state.registers.get_with_alias("A0");
    println!("{:?} {:?}", arg, new_state.eval(&arg));
}

#[test]
fn r100() {
    use crate::radius::{Radius, RadiusOption};
    use crate::value::Value;

    let options = vec!(RadiusOption::Debug(false));
    let mut radius = Radius::new_with_options(Some("../tests/r100"), &options);
    let mut state = radius.call_state(0x004006fd);
    let bv = state.bv("flag", 12*8);
    let addr: u64 = 0x100000;
    state.memory.write_value(addr, &Value::Symbolic(bv.clone(), 0), 12);
    state.registers.set("rdi", Value::Concrete(addr, 0));

    radius.breakpoint(0x004007a1);
    radius.avoid(&[0x00400790]);
    let mut new_state = radius.run(state, 1).unwrap();
    let flag = new_state.evaluate_string(&bv).unwrap();
    println!("FLAG: {}", flag);
    assert_eq!(flag, "Code_Talkers");
}

#[test]
fn r200() {
    use crate::radius::{Radius, RadiusOption};
    use crate::value::Value;

    let options = vec!(RadiusOption::Debug(false));
    let mut radius = Radius::new_with_options(Some("../tests/r200"), &options);
    let mut state = radius.call_state(0x00400886);
    let bv = state.bv("flag", 6*8);

    let addr = state.registers.get("rsp").as_u64().unwrap();
    state.memory.write_value(addr-0x18, &Value::Symbolic(bv.clone(), 0), 6);

    radius.breakpoint(0x00400843);
    radius.mergepoint(0x004007fd);
    radius.avoid(&[0x00400832]);

    let mut new_state = radius.run(state, 1).unwrap();
    let flag = new_state.evaluate_string(&bv).unwrap();
    println!("FLAG: {}", flag);
    assert_eq!(flag, "rotors");
}

#[test]
fn unbreakable() {
    use crate::radius::Radius;
    use crate::value::Value;

    let mut radius = Radius::new("../tests/unbreakable");
    let mut state = radius.call_state(0x004005bd);
    let len: usize = 0x33;
    let bv = state.bv("flag", 8*len as u32);

    // add "CTF{" constraint
    let assertion = bv.slice(31, 0)._eq(&state.bvv(0x7b465443, 32));
    state.assert(&assertion);

    let addr: u64 = 0x6042c0;
    state.memory.write_value(addr, &Value::Symbolic(bv.clone(), 0), len);
    let mut new_state = radius.run_until(
        state, 0x00400830, &[0x00400850]).unwrap();

    let flag = new_state.evaluate_string(&bv).unwrap();
    println!("FLAG: {}", flag);
    assert_eq!(flag, "CTF{0The1Quick2Brown3Fox4Jumped5Over6The7Lazy8Fox9}");
}

/*fn callback(state: &mut State) -> bool {
    //println!("state: {:?}", state);
    true
}*/

#[test]
fn fileread() {
    use crate::radius::{Radius, RadiusOption};
    use crate::value::Value;

    let options = vec!(RadiusOption::Debug(true));
    let mut radius = Radius::new_with_options(Some("../tests/fileread"), &options);
    radius.analyze(2); // necessary for sims for some reason
    let mut state = radius.call_state(0x100003e7c);
    let data = vec!(
        Value::Concrete(0x68, 0),
        Value::Concrete(0x6d, 0),
        Value::Concrete(0x6d, 0),
        Value::Concrete(0x6d, 0),
        Value::Concrete(0x6d, 0)
    );
    state.filesystem.add_file("test.txt", &data);
    let mut new_state = radius.run_until(state, 0x100003f14, &[]).unwrap();

    // dump stdout
    let data = new_state.filesystem.dump(1);

    let mut str_bytes = vec!();
    for d in data {
        str_bytes.push(new_state.solver.eval_to_u64(&d).unwrap() as u8);
    }
    let string = String::from_utf8(str_bytes).unwrap();
    assert_eq!(string, "hmmm\n");
}   



#[test]
fn symmem() {
    use crate::radius::{Radius, RadiusOption};
    use crate::state::{State, Event, EventTrigger, EventContext};
    use crate::value::Value;
    use crate::sims::libc::{atoi_helper, itoa_helper};
    
    fn event_hook(_state: &mut State, _context: &EventContext) {
        println!("hit event hook");
    }

    let mut radius = Radius::new_with_options(
        Some("../tests/symmem"), 
        &vec!(RadiusOption::Debug(false))
    );
    
    let main = radius.r2api.get_address("main").unwrap();
    let mut state = radius.call_state(main);
    state.hook_event(Event::SymbolicRead(EventTrigger::Before), event_hook);

    let x = state.bv("x", 64);
    //x.ult(&state.bvv(-1 as i64 as u64, 64)).assert();
    //x.ugt(&state.bvv(40, 64)).assert();
    //println!("x: {:?}", state.solver.max(&x));

    let sentence = String::from("this is my string it is a good string I think");
    state.memory.write_string(0x100000, sentence.as_str());
    state.memory.write_value(0x100008, &Value::Symbolic(x.clone(), 0), 8);

    let index = state.memory_search(
        &Value::Concrete(0x100000, 0), 
        &Value::Concrete(0x646f6f67, 0), 
        &Value::Concrete(64, 0), false);

    //println!("index is {:?}", index);

    if let Value::Symbolic(ind, _t) = index {
        state.solver.push();
        ind._eq(&state.bvv(0x10000a, 64)).assert();
        //println!("{:?}", state.memory.read_string(0x100000, 48));
        state.solver.pop();
    }

    //return;

    let sentence1 = "elephant";
    let _sentence2 = "alephant";

    state.memory.write_string(0x100000, sentence1);
    state.memory.write_value(0x100010, &Value::Symbolic(x.clone(), 0), 8);

    let cmp = state.memory_compare(
        &Value::Concrete(0x100000, 0),
        &Value::Concrete(0x100010, 0),
        &Value::Concrete(8, 0));

    if let Value::Symbolic(c, _t) = cmp {
        c._eq(&state.bvv(0, 64)).assert();
        println!("{}", state.evaluate_string(&x).unwrap());
    }

    let len = 8;
    state.memory.write_string(0x200000, "00000110");
    let atoi_addr = Value::Concrete(0x200000, 0);
    let numstr = state.symbolic_value("numstr", 8*len);
    state.memory_write_value(&atoi_addr, &numstr, len as usize);
    let num = atoi_helper(&mut state, &atoi_addr, &Value::Concrete(2, 0), 32); //numstr);
    state.assert_value(&num.sgt(&Value::Concrete(110i64 as u64, 0)));
    //println!("num: {:?}", num);
    println!("atoi: {:?}", state.evaluate_string_value(&numstr));

    let itoa_addr = Value::Concrete(0x300000, 0);
    let citoa_val = Value::Concrete(0x003239343731, 0);
    //let itoa_val = Value::Concrete(0x4454, 0);
    let itoa_val = state.symbolic_value("itoa", 32);
    itoa_helper(&mut state, &itoa_val, &itoa_addr, &Value::Concrete(10, 0), true, 32);
    let ibv = state.memory_read_value(&itoa_addr, 7);
    state.assert_value(&ibv.eq(&citoa_val));
    println!("itoa: {:?}", state.eval(&itoa_val));

    //println!("cmp: {:?}", cmp);

    /*println!("good: {:?}", index);
    if let Value::Concrete(good) = index {
        println!("good: {:?}, {:?}", index, sentence.get(..good as usize));
    }*/

    let len: usize = 8;
    let bv = state.bv("flag", 8*len as u32);
    //bv._eq(&state.bvv(3, 64)).not().assert();

    state.registers.set("rdi", Value::Symbolic(bv.clone(), 0));

    let mut new_state = radius.run_until(
        state, 0x119c, &[0x119e]).unwrap();

    let eax = new_state.registers.get("rax");

    //println!("eax: {:?}", eax);
    //eax.as_bv().unwrap()._eq(&new_state.bvv(7, 64)).assert();
    println!("val: {:?} {:?}", new_state.eval(&eax), eax);

    radius.r2api.close();
}

#[test]
fn ioscrackme() {
    use crate::radius::{Radius, RadiusOption};
    use crate::value::Value;

    let mut radius = Radius::new_with_options(
        Some("ipa://../tests/ioscrackme.ipa"), &[RadiusOption::Debug(true)]);

    //radius.set_option("asm.arch", "arm.v35");
    let len: usize = 16;

    let validate = radius.r2api.get_address("sym._validate").unwrap();
    let mut state = radius.call_state(validate);
    let bv = state.bv("flag", 8*len as u32);

    // add "[a-zA-Z]" constraint
    state.constrain_bytes(&bv, "[a-zA-Z]");

    let buf_addr: u64 = 0xff000000;
    state.registers.set("x0", Value::Concrete(buf_addr, 0));
    state.memory.write_value(buf_addr, &Value::Symbolic(bv.clone(), 0), len);

    let mut new_state = radius.run_until(
        state, 0x10000600c, &[0x100006044]).unwrap();

    let flag = new_state.evaluate_string(&bv);
    println!("FLAG: {}", flag.unwrap());
    radius.r2api.close();
}