From b2a684df667c3ff95cd3509d7148307da038fdd3 Mon Sep 17 00:00:00 2001
From: h7x4 <h7x4@nani.wtf>
Date: Thu, 2 Jul 2026 00:35:33 +0900
Subject: [PATCH] misc/rust_fixme_3

---
 misc/rust_fixme_3/Cargo.lock  | 70 +++++++++++++++++++++++++++++++++++
 misc/rust_fixme_3/Cargo.toml  |  7 ++++
 misc/rust_fixme_3/src/main.rs | 49 ++++++++++++++++++++++++
 3 files changed, 126 insertions(+)
 create mode 100644 misc/rust_fixme_3/Cargo.lock
 create mode 100644 misc/rust_fixme_3/Cargo.toml
 create mode 100644 misc/rust_fixme_3/src/main.rs

diff --git a/misc/rust_fixme_3/Cargo.lock b/misc/rust_fixme_3/Cargo.lock
new file mode 100644
index 0000000..f719783
--- /dev/null
+++ b/misc/rust_fixme_3/Cargo.lock
@@ -0,0 +1,70 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "crossbeam-deque"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "613f8cc01fe9cf1a3eb3d7f488fd2fa8388403e97039e2f73692932e291a770d"
+dependencies = [
+ "crossbeam-epoch",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-epoch"
+version = "0.9.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b82ac4a3c2ca9c3460964f020e1402edd5753411d7737aa39c3714ad1b5420e"
+dependencies = [
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.8.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22ec99545bb0ed0ea7bb9b8e1e9122ea386ff8a48c0922e43f36d45ab09e0e80"
+
+[[package]]
+name = "either"
+version = "1.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "60b1af1c220855b6ceac025d3f6ecdd2b7c4894bfe9cd9bda4fbb4bc7c0d4cf0"
+
+[[package]]
+name = "rayon"
+version = "1.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b418a60154510ca1a002a752ca9714984e21e4241e804d32555251faf8b78ffa"
+dependencies = [
+ "either",
+ "rayon-core",
+]
+
+[[package]]
+name = "rayon-core"
+version = "1.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1465873a3dfdaa8ae7cb14b4383657caab0b3e8a0aa9ae8e04b044854c8dfce2"
+dependencies = [
+ "crossbeam-deque",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "rust_proj"
+version = "0.1.0"
+dependencies = [
+ "xor_cryptor",
+]
+
+[[package]]
+name = "xor_cryptor"
+version = "1.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72e5adf4efbff008434783ea27dab065d79d4c4eb61d2f6eb1299bec75139209"
+dependencies = [
+ "rayon",
+]
diff --git a/misc/rust_fixme_3/Cargo.toml b/misc/rust_fixme_3/Cargo.toml
new file mode 100644
index 0000000..69a0629
--- /dev/null
+++ b/misc/rust_fixme_3/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "rust_proj"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+xor_cryptor = "1.2.3"
diff --git a/misc/rust_fixme_3/src/main.rs b/misc/rust_fixme_3/src/main.rs
new file mode 100644
index 0000000..4fb767f
--- /dev/null
+++ b/misc/rust_fixme_3/src/main.rs
@@ -0,0 +1,49 @@
+use xor_cryptor::XORCryptor;
+
+fn decrypt(encrypted_buffer: Vec<u8>, borrowed_string: &mut String) {
+    // Key for decryption
+    let key = String::from("CSUCKS");
+
+    // Editing our borrowed value
+    borrowed_string.push_str("PARTY FOUL! Here is your flag: ");
+
+    // Create decryption object
+    let res = XORCryptor::new(&key);
+    if res.is_err() {
+        return;
+    }
+    let xrc = res.unwrap();
+
+    // Did you know you have to do "unsafe operations in Rust?
+    // https://doc.rust-lang.org/book/ch19-01-unsafe-rust.html
+    // Even though we have these memory safe languages, sometimes we need to do things outside of the rules
+    // This is where unsafe rust comes in, something that is important to know about in order to keep things in perspective
+
+    unsafe {
+        // Decrypt the flag operations
+        let decrypted_buffer = xrc.decrypt_vec(encrypted_buffer);
+
+        // Creating a pointer
+        let decrypted_ptr = decrypted_buffer.as_ptr();
+        let decrypted_len = decrypted_buffer.len();
+
+        // Unsafe operation: calling an unsafe function that dereferences a raw pointer
+        let decrypted_slice = std::slice::from_raw_parts(decrypted_ptr, decrypted_len);
+
+        borrowed_string.push_str(&String::from_utf8_lossy(decrypted_slice));
+    }
+    println!("{}", borrowed_string);
+}
+
+fn main() {
+    // Encrypted flag values
+    let hex_values = ["41", "30", "20", "63", "4a", "45", "54", "76", "12", "90", "7e", "53", "63", "e1", "01", "35", "7e", "59", "60", "f6", "03", "86", "7f", "56", "41", "29", "30", "6f", "08", "c3", "61", "f9", "35"];
+
+    // Convert the hexadecimal strings to bytes and collect them into a vector
+    let encrypted_buffer: Vec<u8> = hex_values.iter()
+        .map(|&hex| u8::from_str_radix(hex, 16).unwrap())
+        .collect();
+
+    let mut party_foul = String::from("Using memory unsafe languages is a: ");
+    decrypt(encrypted_buffer, &mut party_foul);
+}