libmwemu 0.24.3

x86 32/64bits and system internals emulator, for securely emulating malware and other stuff.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72

use crate::color;
use crate::emu::Emu;
use iced_x86::Instruction;

pub fn execute(emu: &mut Emu, ins: &Instruction, instruction_sz: usize, _rep_step: bool) -> bool {
    emu.show_instruction(color!("Green"), &crate::emu::decoded_instruction::DecodedInstruction::X86(*ins));
    assert!(ins.op_count() == 2);

    let sz0 = emu.get_operand_sz(ins, 0);
    let sz1 = emu.get_operand_sz(ins, 1);

    if sz0 == 128 && sz1 == 64 {
        let value0 = match emu.get_operand_xmm_value_128(ins, 0, true) {
            Some(v) => v,
            None => {
                log::trace!("error getting xmm value0");
                return false;
            }
        };

        let value1 = match emu.get_operand_value(ins, 0, true) {
            Some(v) => v,
            None => {
                log::trace!("error getting value1");
                return false;
            }
        };

        let lower_value0 = value0 & 0x00000000_FFFFFFFF_00000000_FFFFFFFF;
        let upper_value1 = (value1 as u128) << 64;
        let result = lower_value0 | upper_value1;

        emu.set_operand_xmm_value_128(ins, 0, result);
    } else if sz0 == 64 && sz1 == 128 {
        let value1 = match emu.get_operand_xmm_value_128(ins, 0, true) {
            Some(v) => v,
            None => {
                log::trace!("error getting xmm value1");
                return false;
            }
        };

        let result = (value1 >> 64) as u64;

        emu.set_operand_value(ins, 0, result);
    } else if sz0 == 128 && sz1 == 32 {
        let value0 = match emu.get_operand_xmm_value_128(ins, 0, true) {
            Some(v) => v,
            None => {
                log::trace!("error getting xmm value0");
                return false;
            }
        };

        let value1 = match emu.get_operand_value(ins, 1, true) {
            Some(v) => (v & 0xffffffff) as u32,
            None => {
                log::trace!("error getting value1");
                return false;
            }
        };

        let lower_value0 = value0 & 0x00000000_FFFFFFFF_FFFFFFFF_FFFFFFFF;
        let upper_value1 = (value1 as u128) << 96;
        let result = lower_value0 | upper_value1;

        emu.set_operand_xmm_value_128(ins, 0, result);
    } else {
        unimplemented!("case of movhps unimplemented {} {}", sz0, sz1);
    }
    true
}