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 ...
比赛地址：Midnight Flag CTF 比赛时间：12 Apr 2025 16:00 CST - 14 Apr 2025 02:00 CST 复现的题目用🔁标注 Misc HALL OF FLAGS 1/2 Challenge HALL OF FLAGS 1/2 Signal lost… Attempting data restoration… A corrupted memory fragment has resurfaced on the MIDNIGHT underground network. Battle traces, remnants of a forgotten team… An anomaly lingers within the archives of an old trainer. The Hall of Fame records every victory, yet the very first entry seems to have been erased. Who were the true champions? What secrets li ...
比赛地址：TGCTF2025 比赛时间：12 Apr 2025 09:00 CST - 13 Apr 2025 21:00 CST 复现的题目用🔁标注 Misc where it is(osint) Challenge 小明骑着机车在路上驰骋的时候给我拍了一张照片，说找得到他在哪里就请我吃海鲜，你能把他揪出来吗？（flag 形式为 TGCTF {右上角轨道到站的站名}） 解题思路 截取图片的关键部分识图 在谷歌地图搜索对应位置 1TGCTF{港墘站} next is the end Challenge 没有人知道那一天 J1nghong 被看到了什么东西，人们只知道从那以后再也没有人能手动的点开看到他任何一个文件夹里的宝藏（请提交形式为 flag {} 的最终答案） Solution 文件夹套娃，用 VSCode 打开这个文件夹直接秒了 1flag{so_great!} 你的运气是好是坏？ Challenge 好運來 祝你好運來 好運帶來了喜和愛 好運來 我們好運來 迎著好運興旺發達通四海 疊個千紙鶴 再系個紅飄帶 願善良的人們天天好運來 你勤勞生活美 你健康 ...
