赛后复现的题目标题前用🔁标注。感谢群内大佬的解惑。 Misc 音频的秘密 Chllenge 音频也会有秘密吗？ Solution 一开始还以为是摩斯电码，在这里耗了很长时间（好气） 用 SilentEye 提取隐写文件，sound quality 选 low 拿到加密压缩包 爆破得到密码 1234 LSB 隐写拿到 qzvk{Ym_LOVE_MZMP_30vs6@_nanmtc_q0i_J01_1} 结合这个不难猜到是维吉尼亚加密，密码就是 lovely 1flag{No_AAAA_BBBB_30ao6@_cccyyy_f0k_Y01_1} Terminal Hacker Challenge 黑客的世界，从敲下第一个命令开始…… 进入你的终端，尝试找出那串藏在系统深处的字符串。 附件： hacker.exe 找到隐藏的 flag。 flag 格式： flag Solution 先用 pyinstxtractor 解包，然后用 pycdc 反编译 1flag{Cysay_terminal_game_hacked_successfully} 数据识别与审计 Cha ...
Misc 量子迷宫 Challenge 未来量子实验室的 AI 将机密数据加密成了量子迷宫，每一行代表一个量子比特操作。只有通过逆向坍缩观测，才能还原出被量子噪声掩盖的密钥。实验室遗留的日志文件似乎隐藏着关键线索（flag 格式：palu {32 位 md5}） Solution 提取出 QUBIT | 后面的字符（索引为 6）并连接 -> 二进制转字符（字节长度为 8） 123456789101112data = """QUBIT|0⟩ → X GateQUBIT|1⟩ → Y Gate PHOTON: 2492°QUBIT|1⟩ → X Gate..."""bits = ''.join([line[6] for line in data.splitlines() if len(line) > 6])for i in range(0, len(bits), 8): chunk = bits[i:i+8] char = chr(int(chunk, 2)) print(char,end="") 1palu{aea437c12b149750383fe5 ...
Misc ez_xor 写一个 Python 脚本爆破 XOR 加密的谜题 ，找出以 flag{ 开头的明文内容 123456789101112131415161718192021222324252627def xor_decrypt(ciphertext_bytes, key): return bytes(b ^ key for b in ciphertext_bytes)def is_printable_ascii(data): try: decoded = data.decode('ascii') return all(32 <= c <= 126 for c in data) except Exception: return Falsedef find_flag(ciphertext_hex): ciphertext_bytes = bytes.fromhex(ciphertext_hex.replace('-', '')) for key in range(256): d ...
比赛地址：Incognito CTF 6.0 比赛时间：2025-04-28 08:00 - 2025-04-29 08:00 复现的题目用🔁标注 Digital Forensics The Fragmented Truth Challenge The Fragmented Truth In this sea of chaos, can you uncover the signal, where ictf holds the key to rising above the noise in the transmission? Solution 搜索 ictf 后找到第 22 条流量 发现这是一张 .png 图片，保存下来 1ictf{1n_7h3_s1l3nc3_0f_fr4gm3n75_w3_r3v34l} The Spectral Image b6414 Challenge The Spectral Image b6414 Remember, sometimes the key to unlocking an image isn’t through typical ...
比赛地址：UniVsThreats CTF 2025 比赛时间：2025-05-03 18:00 - 2025-05-04 18:00 Forensics Dark Web Stories Challenge You were running a Tor exit node on dark web to intercept some traffic from different .onion websites. It was pretty boring, until, at some point, you got something interesting. It seems that somebody was trying to penetrate an illegal website in order to find something about an underground organization. You saved the dump of the traffic and now it’s time to analyze it more in depth. Find ...
比赛地址：CTF@CIT 2025 比赛时间：26 Apr 2025 05:00 CST - 28 Apr 2025 03:00 CST Misc Blank Image Challenge I was gonna make a really cool challenge but then I literally forgot about it so all I have is this blank image. Good luck! Solution LSB 隐写 1CIT{n1F0Rsm0Er40} I AM Steve Challenge You were supposed to be a hero, Brian! SHA256: 01b3dbe5d8801adf27a9bb779d85ef4c8881905544642fbdbdd41e54e4d0ae5e Solution 其实还是 LSB 隐写 1VEhJU19pc19hX2NyYWZ0aW5nX3RhYmxl 多了一步 base64 解码罢了 1CIT{THIS_is_a_crafting_table} ...
比赛地址：UMDCTF 2025 比赛时间：26 Apr 2025 06:00 CST - 28 Apr 2025 06:00 CST Misc find the seeds Challenge can u help Alice find her seeds in the bin? She’s pretty sure the bin hasn’t been dumped since it was generated. 123456789101112import randomimport timeseed = int(time.time())random.seed(seed)plaintext = b"UMDCTF{REDACTED}"keystream = bytes([random.getrandbits(8) for _ in range(len(plaintext))])ciphertext = bytes([p ^ k for p, k in zip(plaintext, keystream)])with open("secret.bin", "wb") as f: ...
比赛地址：DawgCTF 2025 比赛时间：19 Apr 2025 00:00 CST - 21 Apr 2025 00:00 CST 复现的题目用🔁标注 Misc Don’t Touch My Fone Challenge Looks like someone’s dialing a phone number, see if you can figure out what it is! The flag format is the decoded phone number wrapped in DawgCTF{} with no formatting, so if the number is 123-456-7890, then the flag is DawgCTF{1234567890}. Download Challenge File(s): [Click Here](https://github.com/UMBCCyberDawgs/dawgctf-sp25/tree/main/Don’t Touch My Fone) Solution 说了是拨号音了，那就用 D ...
比赛地址：b01lers CTF 2025 比赛时间：19 Apr 2025 07:00 CST - 21 Apr 2025 07:00 CST 复现的题目用🔁标注 Web when Challenge web/whenbeginner author: tillvit the sunk cost fallacy https://when.atreides.b01lersc.tf/ app.ts 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253import express from 'express'import { rateLimit } from 'express-rate-limit'import path from "path"const limiter = rateLimit({ windowMs: 60 * 1000, limit: 60, // 60 per minute standardHeaders: 'draft- ...
比赛地址：UMassCTF 2025 比赛时间：19 Apr 2025 02:00 CST - 21 Apr 2025 08:00 CST 复现的题目用🔁标注 Forensics No Updates Challenge No Updates I don’t believe in updating my computer, it just takes so long! Besides, no one could ever hack me, I use good passwords! Files: chall.pcapng Solution wireshark 打开直接搜 1UMASS{n07_ag41n_d4mn_y0u_m3t4spl017} Macrotrace Challenge Macrotrace A suspicious spreadsheet surfaced from the archive of a defunct Flash game studio. Opening it does… something, but whatever was ther ...
