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ASM Obfuscation
This commit is contained in:
Michael Mikovsky
Generated
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||||
dependencies = [
|
||||
"aes",
|
||||
"block-padding 0.4.2",
|
||||
"cbc",
|
||||
"getrandom",
|
||||
"hex",
|
||||
"hex-literal",
|
||||
"regex",
|
||||
"sha2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "unshell-obfuscate"
|
||||
version = "0.0.0"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"rand",
|
||||
"static_init",
|
||||
"syn 2.0.111",
|
||||
"unshell-crypt",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "version_check"
|
||||
version = "0.9.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
|
||||
|
||||
[[package]]
|
||||
name = "wasip2"
|
||||
version = "1.0.1+wasi-0.2.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0562428422c63773dad2c345a1882263bbf4d65cf3f42e90921f787ef5ad58e7"
|
||||
dependencies = [
|
||||
"wit-bindgen",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "winapi"
|
||||
version = "0.3.9"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
|
||||
dependencies = [
|
||||
"winapi-i686-pc-windows-gnu",
|
||||
"winapi-x86_64-pc-windows-gnu",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "winapi-i686-pc-windows-gnu"
|
||||
version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||
|
||||
[[package]]
|
||||
name = "winapi-x86_64-pc-windows-gnu"
|
||||
version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||
|
||||
[[package]]
|
||||
name = "windows-link"
|
||||
version = "0.2.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
|
||||
|
||||
[[package]]
|
||||
name = "wit-bindgen"
|
||||
version = "0.46.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f17a85883d4e6d00e8a97c586de764dabcc06133f7f1d55dce5cdc070ad7fe59"
|
||||
|
||||
[[package]]
|
||||
name = "zerocopy"
|
||||
version = "0.8.31"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "fd74ec98b9250adb3ca554bdde269adf631549f51d8a8f8f0a10b50f1cb298c3"
|
||||
dependencies = [
|
||||
"zerocopy-derive",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "zerocopy-derive"
|
||||
version = "0.8.31"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d8a8d209fdf45cf5138cbb5a506f6b52522a25afccc534d1475dad8e31105c6a"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 2.0.111",
|
||||
]
|
||||
|
||||
@@ -1,6 +1,27 @@
|
||||
cargo-features = ["trim-paths"]
|
||||
|
||||
[package]
|
||||
name = "unshell-config"
|
||||
version = "0.1.0"
|
||||
edition = "2024"
|
||||
|
||||
|
||||
[features]
|
||||
default = ["obfuscate"]
|
||||
|
||||
obfuscate = ["unshell-obfuscate/obfuscate"]
|
||||
|
||||
[dependencies]
|
||||
libc = { version = "0.2.178", default-features = false }
|
||||
|
||||
unshell-obfuscate = {path = "../unshell-obfuscate", default-features=false}
|
||||
|
||||
|
||||
[profile.release]
|
||||
strip = true # Strip symbols from the binary
|
||||
opt-level = "s" # Optimize for size
|
||||
lto = true
|
||||
codegen-units = 1
|
||||
panic = "abort"
|
||||
debug = false
|
||||
trim-paths = "all"
|
||||
|
||||
@@ -1,3 +1,27 @@
|
||||
fn main() {
|
||||
println!("Hello, world!");
|
||||
#![no_std]
|
||||
#![no_main]
|
||||
|
||||
enum TestEnum {
|
||||
Test = 135,
|
||||
}
|
||||
|
||||
#[unsafe(no_mangle)]
|
||||
pub fn test() -> i32 {
|
||||
let a = TestEnum::Test;
|
||||
|
||||
a as i32
|
||||
}
|
||||
|
||||
#[unsafe(no_mangle)]
|
||||
fn main() {
|
||||
let a = 5;
|
||||
|
||||
unshell_obfuscate::junk_asm!(0.1);
|
||||
|
||||
unsafe { libc::exit(a as i32) }
|
||||
}
|
||||
|
||||
#[panic_handler]
|
||||
fn panic(_info: &core::panic::PanicInfo) -> ! {
|
||||
loop {}
|
||||
}
|
||||
|
||||
Generated
+205
-1
@@ -22,6 +22,18 @@ dependencies = [
|
||||
"memchr",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "bitflags"
|
||||
version = "1.3.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
|
||||
|
||||
[[package]]
|
||||
name = "bitflags"
|
||||
version = "2.10.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "812e12b5285cc515a9c72a5c1d3b6d46a19dac5acfef5265968c166106e31dd3"
|
||||
|
||||
[[package]]
|
||||
name = "block-buffer"
|
||||
version = "0.10.4"
|
||||
@@ -64,6 +76,18 @@ version = "1.0.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
|
||||
|
||||
[[package]]
|
||||
name = "cfg_aliases"
|
||||
version = "0.1.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "fd16c4719339c4530435d38e511904438d07cce7950afa3718a84ac36c10e89e"
|
||||
|
||||
[[package]]
|
||||
name = "cfg_aliases"
|
||||
version = "0.2.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
|
||||
|
||||
[[package]]
|
||||
name = "cipher"
|
||||
version = "0.4.4"
|
||||
@@ -162,12 +186,53 @@ version = "0.2.177"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "2874a2af47a2325c2001a6e6fad9b16a53b802102b528163885171cf92b15976"
|
||||
|
||||
[[package]]
|
||||
name = "lock_api"
|
||||
version = "0.4.14"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "224399e74b87b5f3557511d98dff8b14089b3dadafcab6bb93eab67d3aace965"
|
||||
dependencies = [
|
||||
"scopeguard",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "memchr"
|
||||
version = "2.7.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f52b00d39961fc5b2736ea853c9cc86238e165017a493d1d5c8eac6bdc4cc273"
|
||||
|
||||
[[package]]
|
||||
name = "parking_lot"
|
||||
version = "0.12.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "93857453250e3077bd71ff98b6a65ea6621a19bb0f559a85248955ac12c45a1a"
|
||||
dependencies = [
|
||||
"lock_api",
|
||||
"parking_lot_core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "parking_lot_core"
|
||||
version = "0.9.12"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "2621685985a2ebf1c516881c026032ac7deafcda1a2c9b7850dc81e3dfcb64c1"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
"libc",
|
||||
"redox_syscall",
|
||||
"smallvec",
|
||||
"windows-link",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "ppv-lite86"
|
||||
version = "0.2.21"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9"
|
||||
dependencies = [
|
||||
"zerocopy",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "proc-macro2"
|
||||
version = "1.0.103"
|
||||
@@ -192,6 +257,44 @@ version = "5.3.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
|
||||
|
||||
[[package]]
|
||||
name = "rand"
|
||||
version = "0.9.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "6db2770f06117d490610c7488547d543617b21bfa07796d7a12f6f1bd53850d1"
|
||||
dependencies = [
|
||||
"rand_chacha",
|
||||
"rand_core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rand_chacha"
|
||||
version = "0.9.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
|
||||
dependencies = [
|
||||
"ppv-lite86",
|
||||
"rand_core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rand_core"
|
||||
version = "0.9.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "99d9a13982dcf210057a8a78572b2217b667c3beacbf3a0d8b454f6f82837d38"
|
||||
dependencies = [
|
||||
"getrandom",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "redox_syscall"
|
||||
version = "0.5.18"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ed2bf2547551a7053d6fdfafda3f938979645c44812fbfcda098faae3f1a362d"
|
||||
dependencies = [
|
||||
"bitflags 2.10.0",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "regex"
|
||||
version = "1.12.2"
|
||||
@@ -221,6 +324,12 @@ version = "0.8.8"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "7a2d987857b319362043e95f5353c0535c1f58eec5336fdfcf626430af7def58"
|
||||
|
||||
[[package]]
|
||||
name = "scopeguard"
|
||||
version = "1.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
|
||||
|
||||
[[package]]
|
||||
name = "sha2"
|
||||
version = "0.10.9"
|
||||
@@ -232,6 +341,51 @@ dependencies = [
|
||||
"digest",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "smallvec"
|
||||
version = "1.15.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "67b1b7a3b5fe4f1376887184045fcf45c69e92af734b7aaddc05fb777b6fbd03"
|
||||
|
||||
[[package]]
|
||||
name = "static_init"
|
||||
version = "1.0.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8bae1df58c5fea7502e8e352ec26b5579f6178e1fdb311e088580c980dee25ed"
|
||||
dependencies = [
|
||||
"bitflags 1.3.2",
|
||||
"cfg_aliases 0.2.1",
|
||||
"libc",
|
||||
"parking_lot",
|
||||
"parking_lot_core",
|
||||
"static_init_macro",
|
||||
"winapi",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "static_init_macro"
|
||||
version = "1.0.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1389c88ddd739ec6d3f8f83343764a0e944cd23cfbf126a9796a714b0b6edd6f"
|
||||
dependencies = [
|
||||
"cfg_aliases 0.1.1",
|
||||
"memchr",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 1.0.109",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "syn"
|
||||
version = "1.0.109"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"unicode-ident",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "syn"
|
||||
version = "2.0.109"
|
||||
@@ -275,7 +429,9 @@ version = "0.0.0"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"rand",
|
||||
"static_init",
|
||||
"syn 2.0.109",
|
||||
"unshell-crypt",
|
||||
]
|
||||
|
||||
@@ -294,8 +450,56 @@ dependencies = [
|
||||
"wit-bindgen",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "winapi"
|
||||
version = "0.3.9"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
|
||||
dependencies = [
|
||||
"winapi-i686-pc-windows-gnu",
|
||||
"winapi-x86_64-pc-windows-gnu",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "winapi-i686-pc-windows-gnu"
|
||||
version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||
|
||||
[[package]]
|
||||
name = "winapi-x86_64-pc-windows-gnu"
|
||||
version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||
|
||||
[[package]]
|
||||
name = "windows-link"
|
||||
version = "0.2.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
|
||||
|
||||
[[package]]
|
||||
name = "wit-bindgen"
|
||||
version = "0.46.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f17a85883d4e6d00e8a97c586de764dabcc06133f7f1d55dce5cdc070ad7fe59"
|
||||
|
||||
[[package]]
|
||||
name = "zerocopy"
|
||||
version = "0.8.31"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "fd74ec98b9250adb3ca554bdde269adf631549f51d8a8f8f0a10b50f1cb298c3"
|
||||
dependencies = [
|
||||
"zerocopy-derive",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "zerocopy-derive"
|
||||
version = "0.8.31"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d8a8d209fdf45cf5138cbb5a506f6b52522a25afccc534d1475dad8e31105c6a"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 2.0.109",
|
||||
]
|
||||
|
||||
@@ -10,8 +10,10 @@ proc-macro = true
|
||||
obfuscate = []
|
||||
|
||||
[dependencies]
|
||||
unshell-crypt = {path = "../unshell-crypt"}
|
||||
|
||||
quote = "1.0.42"
|
||||
syn = {version = "2.0.109", features = ["full"]}
|
||||
proc-macro2 = "1.0.103"
|
||||
|
||||
unshell-crypt = {path = "../unshell-crypt"}
|
||||
static_init = "1.0.4"
|
||||
rand = "0.9.2"
|
||||
|
||||
@@ -0,0 +1,209 @@
|
||||
use proc_macro::TokenStream;
|
||||
use quote::quote;
|
||||
use rand::rngs::SmallRng;
|
||||
use rand::{Rng, RngCore, SeedableRng};
|
||||
use syn::{LitFloat, parse_macro_input};
|
||||
|
||||
const MAX_INSTRUCTIONS: u32 = 20; // Maximum instructions per recursive block
|
||||
const MIN_LENGTH: f64 = 10.; // Min length per 1/weight
|
||||
|
||||
// The full list of 64-bit registers in AT&T syntax (used by default in asm!)
|
||||
const REGISTERS: &[&str] = &[
|
||||
"%rax", "%rbx", "%rcx", "%rdx", "%rsi", "%rdi", "%r8", "%r9", "%r10", "%r11", "%r12", "%r13",
|
||||
"%r14", "%r15",
|
||||
];
|
||||
|
||||
// Conditional Jumps in AT&T syntax.
|
||||
const COND_JUMPS: &[&str] = &[
|
||||
"je", "jne", "jg", "jge", "jl", "jle", "ja", "jnb", "jc", "jnc", "jz", "jnz",
|
||||
];
|
||||
|
||||
// Arithmetic/Logic operations with the 'q' (quad-word) suffix.
|
||||
const ARITHITHMETIC_OPS: &[&str] = &["addq", "subq", "xorq", "andq", "orq"];
|
||||
|
||||
// --- Helper Functions for Modular Generation ---
|
||||
|
||||
/// Generates a unique label name for the given depth and ID.
|
||||
fn generate_label(prefix: &str, depth: u32, block_id: u32, id: u32) -> String {
|
||||
format!(".L_{}_{}_{}_{}", prefix, depth, block_id, id)
|
||||
}
|
||||
/// Generates a highly randomized, complex instruction using different addressing modes.
|
||||
fn generate_complex_mutation(rng: &mut SmallRng) -> String {
|
||||
let op = ARITHITHMETIC_OPS[rng.random_range(0..ARITHITHMETIC_OPS.len())];
|
||||
|
||||
match rng.random_range(0..3) {
|
||||
// Pattern 0: Register-Immediate
|
||||
// Example: "addq $0x1234, %rax"
|
||||
0 => {
|
||||
let reg = REGISTERS[rng.random_range(0..REGISTERS.len())];
|
||||
let immediate = rng.random_range(1..=0xFFFF);
|
||||
format!("\t{} ${}, {}", op, immediate, reg)
|
||||
}
|
||||
// Pattern 1: Register-Register
|
||||
// Example: "xorq %rbx, %rcx"
|
||||
1 => {
|
||||
let reg_src = REGISTERS[rng.random_range(0..REGISTERS.len())];
|
||||
let reg_dst = REGISTERS[rng.random_range(0..REGISTERS.len())];
|
||||
format!("\t{} {}, {}", op, reg_src, reg_dst)
|
||||
}
|
||||
// Pattern 2: LEA (Complex Address Calculation)
|
||||
// Example: "leaq (%rax, %rbx, 4), %rcx"
|
||||
2 => {
|
||||
let reg_base = REGISTERS[rng.random_range(0..REGISTERS.len())];
|
||||
let reg_index = REGISTERS[rng.random_range(0..REGISTERS.len())];
|
||||
let reg_dst = REGISTERS[rng.random_range(0..REGISTERS.len())];
|
||||
let scale = 1 << rng.random_range(0..4); // Scale is 1, 2, 4, or 8
|
||||
format!(
|
||||
"\tleaq ({}, {}, {}), {}",
|
||||
reg_base, reg_index, scale, reg_dst
|
||||
)
|
||||
}
|
||||
_ => String::new(), // Should not happen
|
||||
}
|
||||
}
|
||||
|
||||
/// Generates a comparison followed by a conditional jump to a specific label.
|
||||
fn generate_conditional_jump(rng: &mut SmallRng, label: &str) -> String {
|
||||
let reg1 = REGISTERS[rng.random_range(0..REGISTERS.len())];
|
||||
let reg2 = REGISTERS[rng.random_range(0..REGISTERS.len())];
|
||||
let jump = COND_JUMPS[rng.random_range(0..COND_JUMPS.len())];
|
||||
|
||||
// Example: "cmpq %rdx, %rsi; jg .L_target_"
|
||||
format!("\tcmpq {}, {}; {} {}\n", reg1, reg2, jump, label)
|
||||
}
|
||||
|
||||
// --- The Core DAG Recursive Algorithm ---
|
||||
|
||||
fn generate_dag_block(weight: f64, rng: &mut SmallRng, depth: u32, id_counter: &mut u32) -> String {
|
||||
// 1. Termination Check
|
||||
|
||||
if rng.random_bool(weight) {
|
||||
return String::new(); // Stop recursion
|
||||
}
|
||||
|
||||
let block_id = *id_counter;
|
||||
*id_counter += 1;
|
||||
|
||||
// 2. Randomize Block Length: The length is now based on WEIGHT.
|
||||
// If rng < WEIGHT, stop growing the block. Otherwise, continue.
|
||||
let mut num_labels: u32 = 0;
|
||||
while !rng.random_bool(weight) && num_labels < MAX_INSTRUCTIONS {
|
||||
num_labels += 1;
|
||||
}
|
||||
|
||||
// Ensure at least one instruction/label exists if we entered the block
|
||||
if num_labels == 0 {
|
||||
num_labels = 1;
|
||||
}
|
||||
|
||||
// Generate all labels for this block (L0 to Ln-1)
|
||||
let labels: Vec<String> = (0..num_labels)
|
||||
.map(|i| generate_label("dag", depth, block_id, i))
|
||||
.collect();
|
||||
|
||||
let mut assembly_block = String::new();
|
||||
|
||||
// 3. Instruction Loop and DAG construction
|
||||
for i in 0..num_labels {
|
||||
let current_label = &labels[i as usize];
|
||||
assembly_block.push_str(&format!("{}:\n", current_label));
|
||||
|
||||
let mut instruction_count = 0;
|
||||
|
||||
// Generate a random number of mutations based on WEIGHT
|
||||
while !rng.random_bool(weight.powi(2)) && instruction_count < MAX_INSTRUCTIONS * 2 {
|
||||
assembly_block.push_str(&format!("{}\n", generate_complex_mutation(rng)));
|
||||
instruction_count += 1;
|
||||
}
|
||||
|
||||
// Conditional Forward Jump (Creates DAG edges)
|
||||
if i < num_labels - 1 && !rng.random_bool(weight * 0.5) {
|
||||
// Jump to a random label strictly ahead of the current one
|
||||
let target_index = rng.random_range(i as usize + 1..num_labels as usize);
|
||||
let target_label = &labels[target_index];
|
||||
assembly_block.push_str(&generate_conditional_jump(rng, target_label));
|
||||
}
|
||||
|
||||
// Recursive Call (Nesting)
|
||||
if depth < 2 {
|
||||
// Lower probability for deep nesting
|
||||
assembly_block.push_str(&generate_dag_block(weight, rng, depth + 1, id_counter));
|
||||
}
|
||||
}
|
||||
|
||||
// 4. Backward Conditional Jump (Adds controlled cycles)
|
||||
// Only at the end of the block, allowing a chance to loop back to an earlier instruction.
|
||||
if num_labels > 1 && rng.random_bool(weight) {
|
||||
let target_index = rng.random_range(0..num_labels as usize - 1);
|
||||
let target_label = &labels[target_index];
|
||||
assembly_block.push_str(&format!("{}\n", generate_complex_mutation(rng)));
|
||||
assembly_block.push_str(&generate_conditional_jump(rng, target_label));
|
||||
assembly_block.push_str("// Backward Conditional Jump to maintain short execution\n");
|
||||
}
|
||||
|
||||
assembly_block
|
||||
}
|
||||
|
||||
pub fn junk_asm(input: TokenStream) -> TokenStream {
|
||||
// 1. Parse the input (expecting an optional f32 weight)
|
||||
let weight: f64 = if input.is_empty() {
|
||||
None
|
||||
} else {
|
||||
match parse_macro_input!(input as LitFloat).base10_parse::<f64>() {
|
||||
Ok(w) => Some(w), // Clamp to a sensible range
|
||||
Err(_) => None,
|
||||
}
|
||||
}
|
||||
.expect("Expected F64");
|
||||
// let final_weight = input_weight.unwrap_or(WEIGHT);
|
||||
|
||||
// 2. Setup
|
||||
let mut rng = SmallRng::from_os_rng();
|
||||
let mut id_counter = 0;
|
||||
// let random_u64_addr: u64 = rng.next_u64(); // The simulated external address
|
||||
|
||||
// 3. Generate Assembly
|
||||
let main_assembly = {
|
||||
loop {
|
||||
let res = generate_dag_block(weight, &mut rng, 0, &mut id_counter);
|
||||
if res.len() as f64 > weight * MIN_LENGTH {
|
||||
break res;
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
println!("{}", main_assembly);
|
||||
|
||||
// 4. Wrap in `asm!`
|
||||
let expanded = quote! {
|
||||
// Output will replace the junk_asm!(...) call
|
||||
{
|
||||
// Execute the code using the standard `asm!` macro.
|
||||
unsafe {
|
||||
#[allow(named_asm_labels)]
|
||||
core::arch::asm!(
|
||||
// The generated junk code
|
||||
// Note: We MUST use AT&T syntax (e.g., %rax, $100) due to options(att_syntax)
|
||||
// The code is generated in AT&T syntax.
|
||||
#main_assembly,
|
||||
|
||||
// Pass the simulated external address into a temporary register (%r15)
|
||||
// This allows instructions to reference an "external" scope using memory reads/writes.
|
||||
// in(reg) external_addr_ref,
|
||||
|
||||
// Clobber all general-purpose registers to force saving/restoring
|
||||
clobber_abi("sysv64"),
|
||||
|
||||
// Correct options for non-volatile junk code
|
||||
options(att_syntax, nomem, nostack, preserves_flags)
|
||||
);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
expanded.into()
|
||||
}
|
||||
|
||||
// NOTE: To make the example runnable, the `src/main.rs` file would now call
|
||||
// junk_asm!(0.2) or junk_asm!(). The instruction sizes and jump structure
|
||||
// are now compliant with your requirements.
|
||||
+19
-143
@@ -3,171 +3,47 @@
|
||||
|
||||
use proc_macro::TokenStream;
|
||||
use quote::quote;
|
||||
use syn::{ItemFn, parse_macro_input};
|
||||
use syn::parse_macro_input;
|
||||
|
||||
mod format_helper;
|
||||
use format_helper::*;
|
||||
|
||||
use syn::LitStr;
|
||||
mod junk_asm;
|
||||
|
||||
// Put all encrypt-related dependencies in a module, so they are easier to use with the feature flag
|
||||
#[allow(dead_code)]
|
||||
mod no_obfuscate;
|
||||
|
||||
#[allow(dead_code)]
|
||||
mod obfuscate;
|
||||
|
||||
#[cfg(not(feature = "obfuscate"))]
|
||||
use no_obfuscate as obs;
|
||||
#[cfg(feature = "obfuscate")]
|
||||
mod obs_deps {
|
||||
pub use unshell_crypt::BACKUP_ENV_KEY;
|
||||
pub use unshell_crypt::ENV_KEY_NAME;
|
||||
pub use unshell_crypt::STATIC_IV;
|
||||
pub use unshell_crypt::aes::encrypt_aes_lines;
|
||||
pub use unshell_crypt::fill;
|
||||
}
|
||||
#[cfg(feature = "obfuscate")]
|
||||
use obs_deps::*;
|
||||
use obfuscate as obs;
|
||||
|
||||
// String obfuscation
|
||||
|
||||
#[proc_macro]
|
||||
#[cfg(not(feature = "obfuscate"))]
|
||||
pub fn obs(input: TokenStream) -> TokenStream {
|
||||
let input = parse_macro_input!(input as LitStr);
|
||||
|
||||
(quote::quote! {
|
||||
String::from(#input)
|
||||
})
|
||||
.into()
|
||||
obs::obs(input)
|
||||
}
|
||||
|
||||
#[proc_macro_attribute]
|
||||
#[cfg(not(feature = "obfuscate"))]
|
||||
pub fn obfuscated_symbol(_attr: TokenStream, item: TokenStream) -> TokenStream {
|
||||
let func = parse_macro_input!(item as ItemFn);
|
||||
TokenStream::from(quote! {
|
||||
#[unsafe(no_mangle)]
|
||||
#func
|
||||
})
|
||||
obs::obfuscated_symbol(_attr, item)
|
||||
}
|
||||
|
||||
#[proc_macro]
|
||||
#[cfg(not(feature = "obfuscate"))]
|
||||
pub fn symbol(input: TokenStream) -> TokenStream {
|
||||
input
|
||||
}
|
||||
|
||||
#[proc_macro_attribute]
|
||||
#[cfg(feature = "obfuscate")]
|
||||
pub fn obfuscated_symbol(_attr: TokenStream, item: TokenStream) -> TokenStream {
|
||||
// Parse the input function
|
||||
|
||||
let func = parse_macro_input!(item as ItemFn);
|
||||
|
||||
// Get the original function name
|
||||
let fn_name = func.sig.ident.to_string();
|
||||
|
||||
// get the encryption key
|
||||
let key_str = std::env::var(ENV_KEY_NAME).unwrap_or(BACKUP_ENV_KEY.to_owned());
|
||||
|
||||
// Generate the new, obfuscated name
|
||||
let obfuscated_name = encrypt_aes_lines(&fn_name, &key_str, STATIC_IV);
|
||||
|
||||
// Create a new string literal for the name
|
||||
let new_name_lit = LitStr::new(&obfuscated_name, func.sig.ident.span());
|
||||
|
||||
// Re-build the function, but add #[no_mangle]
|
||||
// and rename the *exported* symbol via #[export_name]
|
||||
TokenStream::from(quote! {
|
||||
#[unsafe(export_name = #new_name_lit)]
|
||||
#func
|
||||
})
|
||||
}
|
||||
|
||||
// --- NEW MACRO 2: The macro for the loader ---
|
||||
|
||||
#[proc_macro]
|
||||
#[cfg(feature = "obfuscate")]
|
||||
pub fn symbol(input: TokenStream) -> TokenStream {
|
||||
// Parse the input as a string literal
|
||||
let lit_str = parse_macro_input!(input as LitStr);
|
||||
let original_name = lit_str.value();
|
||||
|
||||
// get the encryption key
|
||||
let key_str = std::env::var(ENV_KEY_NAME).unwrap_or(BACKUP_ENV_KEY.to_owned());
|
||||
|
||||
// Generate the exact same obfuscated name
|
||||
let obfuscated_name = encrypt_aes_lines(&original_name, &key_str, STATIC_IV);
|
||||
|
||||
// Expand to a static string literal
|
||||
TokenStream::from(quote! {
|
||||
#obfuscated_name
|
||||
})
|
||||
obs::symbol(input)
|
||||
}
|
||||
|
||||
#[proc_macro]
|
||||
#[cfg(feature = "obfuscate")]
|
||||
pub fn obs(input: TokenStream) -> TokenStream {
|
||||
// Parse the input as a string literal
|
||||
let lit_str = parse_macro_input!(input as LitStr);
|
||||
let original_str = lit_str.value();
|
||||
|
||||
// Handle empty strings explicitly
|
||||
if original_str.is_empty() {
|
||||
return TokenStream::from(quote! { String::new() });
|
||||
}
|
||||
|
||||
// --- Obfuscated Branch Logic ---
|
||||
// This code runs at compile-time
|
||||
|
||||
let str_bytes = original_str.as_bytes();
|
||||
let len = str_bytes.len();
|
||||
|
||||
// 1. Generate a unique, random key for this string
|
||||
let mut key = vec![0u8; len];
|
||||
fill(&mut key).expect("Failed to get random bytes for XOR key");
|
||||
|
||||
// 2. XOR the string with the key
|
||||
let mut obfuscated = Vec::with_capacity(len);
|
||||
for i in 0..len {
|
||||
obfuscated.push(str_bytes[i] ^ key[i]);
|
||||
}
|
||||
|
||||
// 3. This is the code that will be injected into the user's binary
|
||||
// It runs at *runtime* to decrypt the string.
|
||||
let obfuscated_expansion = quote! {
|
||||
{
|
||||
// These static arrays are stored directly in your binary
|
||||
static OBFUSCATED_DATA: [u8; #len] = [ #( #obfuscated ),* ];
|
||||
static KEY_DATA: [u8; #len] = [ #( #key ),* ];
|
||||
|
||||
let mut decrypted = Vec::with_capacity(#len);
|
||||
for i in 0..#len {
|
||||
decrypted.push(OBFUSCATED_DATA[i] ^ KEY_DATA[i]);
|
||||
}
|
||||
|
||||
// We can trust this since the source was a valid String literal
|
||||
String::from_utf8(decrypted).unwrap()
|
||||
}
|
||||
};
|
||||
|
||||
TokenStream::from(obfuscated_expansion)
|
||||
pub fn junk_asm(input: TokenStream) -> TokenStream {
|
||||
junk_asm::junk_asm(input)
|
||||
}
|
||||
|
||||
// #[proc_macro]
|
||||
// pub fn file_literal(_input: TokenStream) -> TokenStream {
|
||||
// // let input = input.into_iter().collect::<Vec<_>>();
|
||||
// // if input.len() != 1 {
|
||||
// // let msg = format!("expected exactly one input token, got {}", input.len());
|
||||
// // return quote! { compile_error!(#msg) }.into();
|
||||
// // }
|
||||
|
||||
// let string = file!();
|
||||
// let lit_str = LitStr::new(string, proc_macro2::Span::call_site());
|
||||
|
||||
// // let string_lit = match LitStr::try_from(&input) {
|
||||
// // // Error if the token is not a string literal
|
||||
// // Err(e) => return e.to_compile_error(),
|
||||
// // Ok(lit) => lit,
|
||||
// // };
|
||||
|
||||
// (quote! {
|
||||
// #lit_str
|
||||
// })
|
||||
// .into()
|
||||
// }
|
||||
//
|
||||
|
||||
#[proc_macro]
|
||||
pub fn file_symbol(_input: TokenStream) -> TokenStream {
|
||||
|
||||
@@ -0,0 +1,23 @@
|
||||
use proc_macro::TokenStream;
|
||||
use quote::quote;
|
||||
use syn::{ItemFn, LitStr, parse_macro_input};
|
||||
|
||||
pub fn obs(input: TokenStream) -> TokenStream {
|
||||
let input = parse_macro_input!(input as LitStr);
|
||||
|
||||
(quote::quote! {
|
||||
String::from(#input)
|
||||
})
|
||||
.into()
|
||||
}
|
||||
pub fn obfuscated_symbol(_attr: TokenStream, item: TokenStream) -> TokenStream {
|
||||
let func = parse_macro_input!(item as ItemFn);
|
||||
TokenStream::from(quote! {
|
||||
#[unsafe(no_mangle)]
|
||||
#func
|
||||
})
|
||||
}
|
||||
|
||||
pub fn symbol(input: TokenStream) -> TokenStream {
|
||||
input
|
||||
}
|
||||
@@ -0,0 +1,98 @@
|
||||
use proc_macro::TokenStream;
|
||||
use quote::quote;
|
||||
use syn::{ItemFn, LitStr, parse_macro_input};
|
||||
use unshell_crypt::{BACKUP_ENV_KEY, ENV_KEY_NAME, STATIC_IV, aes::encrypt_aes_lines, fill};
|
||||
|
||||
#[static_init::dynamic]
|
||||
static KEY: String = {
|
||||
std::env::var(ENV_KEY_NAME).unwrap_or({
|
||||
// Diagnostic::new(proc_macro::Level::Warning, "Using default encryption key!").emit();
|
||||
|
||||
println!("Using default encryption key!");
|
||||
|
||||
BACKUP_ENV_KEY.to_owned()
|
||||
})
|
||||
};
|
||||
|
||||
pub fn obfuscated_symbol(_attr: TokenStream, item: TokenStream) -> TokenStream {
|
||||
// Parse the input function
|
||||
|
||||
let func = parse_macro_input!(item as ItemFn);
|
||||
|
||||
// Get the original function name
|
||||
let fn_name = func.sig.ident.to_string();
|
||||
|
||||
// Generate the new, obfuscated name
|
||||
let obfuscated_name = encrypt_aes_lines(&fn_name, &KEY, STATIC_IV);
|
||||
|
||||
// Create a new string literal for the name
|
||||
let new_name_lit = LitStr::new(&obfuscated_name, func.sig.ident.span());
|
||||
|
||||
// Re-build the function, but add #[no_mangle]
|
||||
// and rename the *exported* symbol via #[export_name]
|
||||
TokenStream::from(quote! {
|
||||
#[unsafe(export_name = #new_name_lit)]
|
||||
#func
|
||||
})
|
||||
}
|
||||
|
||||
pub fn symbol(input: TokenStream) -> TokenStream {
|
||||
// Parse the input as a string literal
|
||||
let lit_str = parse_macro_input!(input as LitStr);
|
||||
let original_name = lit_str.value();
|
||||
|
||||
// Generate the exact same obfuscated name
|
||||
let obfuscated_name = encrypt_aes_lines(&original_name, &KEY, STATIC_IV);
|
||||
|
||||
// Expand to a static string literal
|
||||
TokenStream::from(quote! {
|
||||
#obfuscated_name
|
||||
})
|
||||
}
|
||||
|
||||
pub fn obs(input: TokenStream) -> TokenStream {
|
||||
// Parse the input as a string literal
|
||||
let lit_str = parse_macro_input!(input as LitStr);
|
||||
let original_str = lit_str.value();
|
||||
|
||||
// Handle empty strings explicitly
|
||||
if original_str.is_empty() {
|
||||
return TokenStream::from(quote! { String::new() });
|
||||
}
|
||||
|
||||
// --- Obfuscated Branch Logic ---
|
||||
// This code runs at compile-time
|
||||
|
||||
let str_bytes = original_str.as_bytes();
|
||||
let len = str_bytes.len();
|
||||
|
||||
// 1. Generate a unique, random key for this string
|
||||
let mut key = vec![0u8; len];
|
||||
fill(&mut key).expect("Failed to get random bytes for XOR key");
|
||||
|
||||
// 2. XOR the string with the key
|
||||
let mut obfuscated = Vec::with_capacity(len);
|
||||
for i in 0..len {
|
||||
obfuscated.push(str_bytes[i] ^ key[i]);
|
||||
}
|
||||
|
||||
// 3. This is the code that will be injected into the user's binary
|
||||
// It runs at *runtime* to decrypt the string.
|
||||
let obfuscated_expansion = quote! {
|
||||
{
|
||||
// These static arrays are stored directly in your binary
|
||||
static OBFUSCATED_DATA: [u8; #len] = [ #( #obfuscated ),* ];
|
||||
static KEY_DATA: [u8; #len] = [ #( #key ),* ];
|
||||
|
||||
let mut decrypted = Vec::with_capacity(#len);
|
||||
for i in 0..#len {
|
||||
decrypted.push(OBFUSCATED_DATA[i] ^ KEY_DATA[i]);
|
||||
}
|
||||
|
||||
// We can trust this since the source was a valid String literal
|
||||
String::from_utf8(decrypted).unwrap()
|
||||
}
|
||||
};
|
||||
|
||||
TokenStream::from(obfuscated_expansion)
|
||||
}
|
||||
Executable
+20
@@ -0,0 +1,20 @@
|
||||
# curl -w '\n' \
|
||||
# -H 'Content-Type: application/json' \
|
||||
# -d '{"username":"foo","password":"bar"}' \
|
||||
# http://localhost:3000/api/auth
|
||||
|
||||
|
||||
|
||||
curl -s \
|
||||
-w '\n' \
|
||||
-H 'Content-Type: application/json' \
|
||||
-H 'Authorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJleHAiOjE3NjQ2NjU1ODMsImlhdCI6MTc2NDYyMjM4MywiZW1haWwiOiJmb28ifQ.NeStaGwWBGS825rF11TOH_e79RWEL_2o3SY9jZ5CX20' \
|
||||
-d "jwbrjwbremnwebrnmwemnrbnmwerbnmwer" \
|
||||
http://localhost:3000/api/test
|
||||
|
||||
|
||||
curl -s \
|
||||
-w '\n' \
|
||||
-H 'Content-Type: application/json' \
|
||||
-H 'Authorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJleHAiOjE3NjQ2NjU1ODMsImlhdCI6MTc2NDYyMjM4MywiZW1haWwiOiJmb28ifQ.NeStaGwWBGS825rF11TOH_e79RWEL_2o3SY9jZ5CX20' \
|
||||
http://localhost:3000/api/test/test2
|
||||
Reference in New Issue
Block a user