{"id":201,"date":"2025-01-14T13:15:27","date_gmt":"2025-01-14T05:15:27","guid":{"rendered":"https:\/\/www.okabe.xin\/?p=201"},"modified":"2025-01-14T13:15:27","modified_gmt":"2025-01-14T05:15:27","slug":"wucup","status":"publish","type":"post","link":"https:\/\/www.okabe.xin\/wordpress\/?p=201","title":{"rendered":"Wucup"},"content":{"rendered":"\n

Easy<\/strong><\/em><\/h1>\n\n\n\n

\u6839\u636e\u7ed9\u51fa\u7684\u52a0\u5bc6\u7b97\u6cd5\u548c\u5bc6\u6587<\/p>\n\n\n\n

\u7f16\u5199\u4e00\u4e2a\u89e3\u5bc6\u7a0b\u5e8f<\/p>\n\n\n\n

def rc4(key, data):
    key_length = len(key)
    s = list(range(256))
    j = 0
    for i in range(256):
        j = (j + s[i] + ord(key[i % key_length])) % 256
        s[i], s[j] = s[j], s[i]
\u200b
    i = j = 0
    output = bytearray()
    for byte in data:
        i = (i + 1) % 256
        j = (j + s[i]) % 256
        s[i], s[j] = s[j], s[i]
        k = s[(s[i] + s[j]) % 256]
        output.append(byte ^ k)
\u200b
    return bytes(output).decode('utf-8', errors='ignore')
\u200b
key = \"hello world\"
ciphertext = \"d8d2963e0d8ab8533d2a7fe296c529233924\"
ciphertext += \"6eba0d292d5752578359322c3a77892dfa7261b84f\"
\u200b
flag_length = 40
flag = rc4(key, bytes.fromhex(ciphertext))
\u200b
flag = flag[:flag_length]
print(\"Decrypted flag:\", flag)<\/pre>\n\n\n\n
\u62ff\u5230flag<\/p>\n\n\n\n
Decrypted flag: WuCup{55a0a84f86a6ad40006f014619577ad3}<\/pre>\n\n\n\n
Sign<\/strong><\/em> WEB<\/strong><\/em><\/h1>\n\n\n\n
\u8fdb\u5165\u73af\u5883\u63d0\u793a<\/p>\n\n\n\n
passwd:sgin<\/code><\/pre>\n\n\n\n
\u4e2d\u56fd\u8681\u5251\u8fde\u4e0a<\/p>\n\n\n\n
\u7136\u540e\u627e\u5230flag\u6587\u4ef6\u5c31\u597d<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
sign misc<\/strong><\/em><\/h1>\n\n\n\n
\u4e00\u773c16\u8fdb\u5236<\/p>\n\n\n\n
\u8f6c\u5b57\u7b26\uff0c\u5f97<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"
Easy \u6839\u636e\u7ed9\u51fa\u7684\u52a0\u5bc6\u7b97\u6cd5\u548c\u5bc6\u6587 \u7f16\u5199\u4e00\u4e2a\u89e3\u5bc6\u7a0b\u5e8f def rc4(key, data):   & […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-201","post","type-post","status-publish","format-standard","hentry","category-ctf"],"_links":{"self":[{"href":"https:\/\/www.okabe.xin\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/201","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.okabe.xin\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.okabe.xin\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.okabe.xin\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.okabe.xin\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=201"}],"version-history":[{"count":0,"href":"https:\/\/www.okabe.xin\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/201\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.okabe.xin\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=201"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.okabe.xin\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=201"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.okabe.xin\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=201"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}