├── LICENSE ├── README.md └── fuzzer.py /LICENSE: -------------------------------------------------------------------------------- 1 | The MIT License (MIT) 2 | 3 | Copyright (c) 2017, Positive Technologies. 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: 6 | 7 | The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. 8 | 9 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 10 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # libinjection fuzzer 2 | This tool is supposed to fuzz MariaDB/MSSQL/MySQL/PostgreSQL/Oracle database query to find libinjection bypasses. 3 | Related articles: 4 | 5 | [libinjection: fuzz to bypass](https://waf.ninja/libinjection-fuzz-to-bypass/) 6 | 7 | [Part 2. libinjection: different databases fuzzing](https://waf.ninja/libinjection-different-databases-fuzzing/) 8 | 9 | ## Help 10 | ``` 11 | # python fuzzer.py -h 12 | usage: fuzzer.py [-h] [-t {mysql,mariadb,mssql,pgsql,oracle}] -q QUERY -p 13 | PAYLOAD -c CHARS [-u USER] [--password PASSWORD] -d DB 14 | [-o OUT] [--log-all] [--check CHECK] [--threads THREADS] 15 | 16 | libinjection fuzzer MariaDB, MSSQL, MySQL, PostgreSQL and Oracle databases 17 | 18 | optional arguments: 19 | -h, --help show this help message and exit 20 | -t {mysql,mariadb,mssql,pgsql,oracle}, --type {mysql,mariadb,mssql,pgsql,oracle} 21 | Database type: mysql, mssql 22 | -q QUERY, --query QUERY 23 | Query to fuzz 24 | -p PAYLOAD, --payload PAYLOAD 25 | Payload to use 26 | -c CHARS, --chars CHARS 27 | Characters to fuzz 28 | -u USER, --user USER Database user 29 | --password PASSWORD Database user 30 | -d DB, --db DB Database name 31 | -o OUT, --out OUT Filename pattern (default: log) 32 | --log-all 33 | --check CHECK Check value 34 | ``` 35 | 36 | ## Usage example 37 | ``` 38 | python fuzzer.py -t pgsql -u pt -d test --log-all -q "select * from users where id='1{}'" -c " \"#\$%&()*+,-./1:;<=>?@[\]^_\`a{|}~!" -p "' + {} union select 'a',version() -- 1" 39 | ``` 40 | -------------------------------------------------------------------------------- /fuzzer.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | import os 4 | import sys 5 | import argparse 6 | import pylibinjection 7 | import threading 8 | from multiprocessing.pool import ThreadPool as Pool 9 | lock = threading.Lock() 10 | 11 | 12 | def colorize(color, text): 13 | if color == 'red': 14 | return ''.join(['\033[1;31m', text, '\033[1;m']) 15 | elif color == 'green': 16 | return ''.join(['\033[1;32m', text, '\033[1;m']) 17 | elif color == 'blue': 18 | return ''.join(['\033[1;34m', text, '\033[1;m']) 19 | else: 20 | return text 21 | 22 | 23 | def parse_cli_args(): 24 | parser = argparse.ArgumentParser( 25 | description='libinjection fuzzer for MariaDB, MSSQL, \ 26 | MySQL, PostgreSQL and Oracle database') 27 | parser.add_argument( 28 | '-t', 29 | '--type', 30 | dest='type', 31 | default='mysql', 32 | help=('Database type: mysql, mssql'), 33 | choices=[ 34 | "mysql", 35 | "mariadb", 36 | "mssql", 37 | "pgsql", 38 | "oracle"]) 39 | parser.add_argument('-q', '--query', 40 | dest='query', 41 | help='Query to fuzz', 42 | required=True) 43 | parser.add_argument('-p', '--payload', 44 | dest='payload', 45 | help='Payload to use', 46 | required=True) 47 | parser.add_argument('-c', '--chars', 48 | dest='chars', 49 | help='Characters to fuzz', 50 | required=True) 51 | parser.add_argument('-u', '--user', 52 | dest='user', 53 | help='Database user') 54 | parser.add_argument('--password', 55 | dest='password', 56 | help='Database user', 57 | default='') 58 | parser.add_argument('-d', '--db', 59 | dest='db', 60 | help='Database name', 61 | required=True) 62 | parser.add_argument('-o', '--out', 63 | dest='out', 64 | help='Filename pattern (default: log)', 65 | default="log") 66 | parser.add_argument('--log-all', 67 | dest='log_all', 68 | action='store_true') 69 | parser.add_argument('--check', 70 | dest='check', 71 | help='Check value', 72 | default=False) 73 | return parser.parse_args() 74 | 75 | 76 | def db_connect(args): 77 | if args.type == "mysql" or args.type == "mariadb": 78 | import mysql.connector 79 | try: 80 | connection = mysql.connector.connect( 81 | user=args.user, 82 | password=args.password, 83 | database=args.db) 84 | except mysql.connector.Error as err: 85 | print(colorize("red", "[ERROR] {}".format(err))) 86 | return None 87 | elif args.type == "mssql": 88 | import pymssql 89 | try: 90 | connection = pymssql.connect(server="localhost", database=args.db) 91 | except pymssql.Error as err: 92 | print(colorize("red", "[ERROR] {}".format(err))) 93 | return None 94 | elif args.type == "pgsql": 95 | import psycopg2 96 | try: 97 | connection = psycopg2.connect( 98 | "dbname='{}' user='{}' password='{}'".format( 99 | args.db, args.user, args.password)) 100 | except psycopg2.Error as err: 101 | print(colorize("red", "[ERROR] {}".format(err))) 102 | return None 103 | elif args.type == "oracle": 104 | import cx_Oracle 105 | try: 106 | connection = cx_Oracle.connect( 107 | args.user, args.password, cx_Oracle.makedsn( 108 | '127.0.0.1', 1521, args.db), mode=cx_Oracle.SYSDBA) 109 | except cx_Oracle.Error as err: 110 | print(colorize("red", "[ERROR] {}".format(err))) 111 | return None 112 | 113 | return connection 114 | 115 | 116 | def get_next(string, args): 117 | if len(string) <= 0: 118 | string.append(args.chars[0]) 119 | else: 120 | string[0] = args.chars[ 121 | (args.chars.index(string[0]) + 1) % len(args.chars)] 122 | if args.chars.index(string[0]) is 0: 123 | return list(string[0]) + get_next(string[1:], args) 124 | return string 125 | 126 | 127 | def log_msg(filename, msg): 128 | lock.acquire() 129 | with open(filename, "a") as f: 130 | f.write("{}\n".format(msg)) 131 | lock.release() 132 | 133 | 134 | def process_one(opts): 135 | cursor = opts[0] 136 | payload = opts[1] 137 | args = opts[2] 138 | if os.path.isfile("{}_fp.txt".format(args.type)): 139 | fingerprints = open("{}_fp.txt".format(args.type), "r").read() 140 | else: 141 | fingerprints = list() 142 | 143 | if args.type in ["mysql", "mariadb"]: 144 | for item in cursor.execute(args.query.format(payload), multi=True): 145 | rows = item.fetchall() 146 | else: 147 | cursor.execute(args.query.format(payload)) 148 | rows = cursor.fetchall() 149 | sqli = pylibinjection.detect_sqli(payload) 150 | msg = "Fingerprint: {} Query: {} Result: {}".format( 151 | sqli["fingerprint"], args.query.format(payload), rows) 152 | if len(rows) > 0: 153 | if sqli["sqli"]: 154 | print colorize("red", "[BLOCKED] {}".format(msg)) 155 | if args.log_all: 156 | log_msg( 157 | "{}_bad.txt".format( 158 | args.type), "[{}] {}".format( 159 | args.type.upper(), msg)) 160 | else: 161 | if sqli["fingerprint"] in fingerprints: 162 | print colorize("blue", "[PASS][DUP] {}".format(msg)) 163 | log_msg( 164 | "{}_bad.txt".format( 165 | args.type), "[DUPE][{}] {}".format( 166 | args.type.upper(), msg)) 167 | else: 168 | print colorize("green", "[PASS][NEW] {}".format(msg)) 169 | log_msg( 170 | "{}_good.txt".format( 171 | args.type), "[{}] {}".format( 172 | args.type.upper(), msg)) 173 | log_msg("{}_fp.txt".format(args.type), sqli["fingerprint"]) 174 | fingerprints.append(sqli["fingerprint"]) 175 | 176 | 177 | def main(args): 178 | cnx = db_connect(args) 179 | if not cnx: 180 | sys.exit() 181 | cursor = cnx.cursor() 182 | sequence = list() 183 | if args.log_all: 184 | file_log = open("{}_all.txt".format(args.type), "w") 185 | if args.check: 186 | payload = args.payload.format(args.check) 187 | process_one([cursor, payload, args]) 188 | sys.exit() 189 | else: 190 | while True: 191 | sequence = get_next(sequence, args) 192 | item = ''.join(reversed(sequence)) 193 | if len(item) == 5: 194 | cnx.close() 195 | sys.exit() 196 | payload = args.payload.format(item) 197 | try: 198 | process_one([cursor, payload, args]) 199 | except BaseException as err: 200 | if args.type == "pgsql": 201 | cnx.rollback() 202 | if args.log_all: 203 | log_msg( 204 | "{}_all.txt".format( 205 | args.type), "[{}] Query: {}".format( 206 | args.type.upper(), args.query.format(payload))) 207 | continue 208 | 209 | 210 | if __name__ == "__main__": 211 | args = parse_cli_args() 212 | main(args) 213 | --------------------------------------------------------------------------------