File size: 7,984 Bytes
94c29e9 |
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 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 |
// JavaScript parsing utilities for extracting keys and analyzing code
use crate::utils::error::{ChatGptError, Result};
use regex::Regex;
use std::collections::HashMap;
/// JavaScript parser for analyzing decompiled code
pub struct Parser;
impl Parser {
/// Find variable definition in JavaScript code
///
/// This is a simplified version that uses regex patterns instead of full AST parsing
pub fn find_var_definition(var_name: &str, start_line: usize, code: &str) -> Option<String> {
let lines: Vec<&str> = code.lines().collect();
// Search backwards from start_line
for i in (0..start_line.min(lines.len())).rev() {
let line = lines[i];
// Look for variable declaration: var var_X = ...;
let var_pattern = format!(r"var\s+var_{}\s*=\s*(.+?);", regex::escape(var_name));
if let Ok(re) = Regex::new(&var_pattern) {
if let Some(caps) = re.captures(line) {
let value = caps.get(1)?.as_str().trim();
// Skip complex operations
if value.contains("btoa")
|| value.contains("XOR_STR")
|| value.contains("doubleXOR")
|| value.contains("singlebtoa")
{
continue;
}
return Some(value.to_string());
}
}
}
None
}
/// Parse assignments in decompiled JavaScript code
pub fn parse_assignments(code: &str) -> HashMap<String, String> {
let mut assignments = HashMap::new();
// Find all variable assignments like: var_X = var_Y;
let assign_re = Regex::new(r"var\s+var_(\w+)\s*=\s*(.+?);").unwrap();
for caps in assign_re.captures_iter(code) {
if let (Some(key), Some(value)) = (caps.get(1), caps.get(2)) {
let key_str = key.as_str();
let value_str = value.as_str().trim();
// Skip function calls and complex expressions
if !value_str.contains('(') || value_str.starts_with('"') {
assignments.insert(key_str.to_string(), value_str.to_string());
}
}
}
assignments
}
/// Extract XOR key from JavaScript code
pub fn get_xor_key(js_code: &str) -> Option<String> {
// Look for XOR_STR function calls: XOR_STR(var_X, "key") or XOR_STR(var_X, var_Y)
let xor_pattern = Regex::new(r#"XOR_STR\s*\([^,]+,\s*([^)]+)\)"#).unwrap();
for caps in xor_pattern.captures_iter(js_code) {
if let Some(second_arg) = caps.get(1) {
let arg = second_arg.as_str().trim();
// If it's a string literal, return it
if arg.starts_with('"') && arg.ends_with('"') {
return Some(arg.trim_matches('"').to_string());
}
// If it's a variable, try to find its value
if arg.starts_with("var_") {
let var_name = arg.strip_prefix("var_").unwrap();
let var_pattern =
format!(r#"var\s+var_{}\s*=\s*"([^"]+)";"#, regex::escape(var_name));
if let Ok(re) = Regex::new(&var_pattern) {
if let Some(value_caps) = re.captures(js_code)
{
return value_caps.get(1).map(|m| m.as_str().to_string());
}
}
}
}
}
None
}
/// Parse keys from decompiled code
pub fn parse_keys(decompiled_code: &str) -> Result<(String, HashMap<String, String>)> {
let assignments = Self::parse_assignments(decompiled_code);
let xor_key = Self::get_xor_key(decompiled_code)
.ok_or_else(|| ChatGptError::vm_execution("XOR key not found"))?;
let mut parsed_keys = HashMap::new();
let mut random_index = 1;
for (key, value) in assignments {
let parsed_value = if value.starts_with("Array") && !value.contains("location") {
// Parse array operations: Array(5) : 1.5 + 2.5
if let Some(sum_part) = value.split(") : ").nth(1) {
let numbers: Vec<f64> = sum_part
.split(" + ")
.filter_map(|s| s.trim().parse().ok())
.collect();
if numbers.len() >= 2 {
(numbers[0] + numbers[1]).to_string()
} else {
value.clone()
}
} else {
value.clone()
}
} else if value.contains("location") {
"location".to_string()
} else if value.contains("cfIpLongitude") {
"ipinfo".to_string()
} else if value.contains("maxTouchPoints") {
"vendor".to_string()
} else if value.contains("history") {
"history".to_string()
} else if value.contains(r#"window["Object"]["keys"]"#) {
"localstorage".to_string()
} else if value.contains("createElement") {
"element".to_string()
} else if value.chars().all(|c| c.is_ascii_digit() || c == '.') {
value.clone()
} else if value.contains("random") {
let result = format!("random_{}", random_index);
random_index += 1;
result
} else if value.contains("doublexor") || value.contains("singlebtoa") {
value.clone()
} else {
continue;
};
parsed_keys.insert(key, parsed_value);
}
Ok((xor_key, parsed_keys))
}
/// Analyze JavaScript structure for variable dependencies
pub fn analyze_dependencies(code: &str) -> HashMap<String, Vec<String>> {
let mut dependencies = HashMap::new();
// Find variable declarations and their dependencies
let var_re = Regex::new(r"var\s+var_(\w+)\s*=\s*(.+?);").unwrap();
let ref_re = Regex::new(r"var_(\w+)").unwrap();
for caps in var_re.captures_iter(code) {
if let (Some(var_name), Some(expr)) = (caps.get(1), caps.get(2)) {
let var = var_name.as_str().to_string();
let expression = expr.as_str();
// Find all variable references in the expression
let mut deps = Vec::new();
for ref_caps in ref_re.captures_iter(expression) {
if let Some(ref_var) = ref_caps.get(1) {
let ref_name = ref_var.as_str().to_string();
if ref_name != var {
deps.push(ref_name);
}
}
}
dependencies.insert(var, deps);
}
}
dependencies
}
/// Extract string literals from code
pub fn extract_strings(code: &str) -> Vec<String> {
let mut strings = Vec::new();
let string_re = Regex::new(r#""([^"\\]*(\\.[^"\\]*)*)""#).unwrap();
for caps in string_re.captures_iter(code) {
if let Some(s) = caps.get(1) {
strings.push(s.as_str().to_string());
}
}
strings
}
/// Check if code contains specific pattern
pub fn contains_pattern(code: &str, pattern: &str) -> bool {
if let Ok(re) = Regex::new(pattern) {
re.is_match(code)
} else {
code.contains(pattern)
}
}
/// Count occurrences of a pattern in code
pub fn count_pattern(code: &str, pattern: &str) -> usize {
if let Ok(re) = Regex::new(pattern) {
re.find_iter(code).count()
} else {
code.matches(pattern).count()
}
}
}
|