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fix wrong src_path & cargo format

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b1tg
2021-02-06 08:13:28 +08:00
parent e57348f859
commit 4791d7274b
1 changed files with 23 additions and 23 deletions
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src/main.rs
+23 -23
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@@ -1,12 +1,12 @@
use anyhow::{Result};
use anyhow::Result;
use goblin::pe::PE;
use iced_x86::{Decoder, DecoderOptions, Formatter, Instruction, NasmFormatter};
use std::fs::File;
use std::io::prelude::*;
use std::io::BufWriter;
use iced_x86::{Decoder, DecoderOptions, Formatter, Instruction, NasmFormatter};
fn main() -> Result<()> {
let src_path = "shellcode\\target\\x86_64-pc-windows-msvc\\release\\wo.exe";
let src_path = "shellcode\\target\\x86_64-pc-windows-msvc\\release\\shellcode.exe";
let mut file = File::open(src_path)?;
let mut buffer = Vec::new();
file.read_to_end(&mut buffer)?;
@@ -19,36 +19,36 @@ fn main() -> Result<()> {
continue;
}
let start = section.pointer_to_raw_data as usize;
let size = section.size_of_raw_data as usize;
let size = section.size_of_raw_data as usize;
let dst_path = "shellcode\\target\\x86_64-pc-windows-msvc\\release\\shellcode.bin";
let shellcode = File::create(dst_path)?;
let mut buf_writer = BufWriter::new(shellcode);
println!("[*] section text addr: 0x{:x}, size: 0x{:x}", start, size);
println!("[*] entry offset: 0x{:x}", entry_offset);
println!("== before patch ==");
show_disassemble(&buffer[start..start+size], 5);
show_disassemble(&buffer[start..start + size], 5);
if entry_offset >= 0x100 {
buffer[0+start] = 0xe9;
let hi = (entry_offset-2) / 0x100;
let li = (entry_offset-2) % 0x100;
buffer[0 + start] = 0xe9;
let hi = (entry_offset - 2) / 0x100;
let li = (entry_offset - 2) % 0x100;
dbg!(hi, li);
buffer[1+start] = li as _;
buffer[2+start] = hi as _;
buffer[3+start] = 0 as _;
buffer[4+start] = 0 as _;
buffer[1 + start] = li as _;
buffer[2 + start] = hi as _;
buffer[3 + start] = 0 as _;
buffer[4 + start] = 0 as _;
} else if entry_offset >= 0x80 {
buffer[0+start] = 0xe9;
buffer[1+start] = (entry_offset-5) as _;
buffer[2+start] = 0 as _;
buffer[3+start] = 0 as _;
buffer[4+start] = 0 as _;
buffer[0 + start] = 0xe9;
buffer[1 + start] = (entry_offset - 5) as _;
buffer[2 + start] = 0 as _;
buffer[3 + start] = 0 as _;
buffer[4 + start] = 0 as _;
} else {
buffer[0+start] = 0xeb;
buffer[1+start] = (entry_offset-2) as _;
buffer[0 + start] = 0xeb;
buffer[1 + start] = (entry_offset - 2) as _;
}
println!("== after patch ==");
show_disassemble(&buffer[start..start+size], 5);
for i in start..start+size {
show_disassemble(&buffer[start..start + size], 5);
for i in start..start + size {
buf_writer.write(&[buffer[i]])?;
}
buf_writer.flush().unwrap();
@@ -66,8 +66,8 @@ pub fn show_disassemble(bytes: &[u8], max_line: u32) {
let mut instruction = Instruction::default();
let mut i = 0;
while decoder.can_decode() {
i +=1;
if i> max_line {
i += 1;
if i > max_line {
println!("....\n");
break;
}