BulkSSRF (bssrf)

This is a Rust port of m4ll0k ssrf.py script.

Installation

Precompiled binaries for bssrf are available in the releases tab. Just pick your platform and extract the archive that contains the binary.

Building it yourself

If you want to build it yourself you will need to install Rust, you can get the official installation from the Rust website.

To build BulkSSRF:

$ git clone https://github.com/junnlikestea/bulkssrf
$ cd bulkssrf
$ cargo build --release
$ ./target/release/bssrf --version

Usage

With a list of urls in a file:

bssrf -f path/to/file.txt -l xyzburpcollaborator.com

Using a tool like gau to feed bssrf urls:

gau hackerone.com | bssrf -l xyzburpcollaborator.com

By default the program has timeout set to 5 seconds, but you can alter that with the -t flag, you can also add various debugging info with the -v for verbose flag:

gau hackerone.com | bssrf -v -t 10 -l xyzburpcollaborator.com 

If you want to feed the traffic through an http proxy you can use the -p or -replay-proxy flag.

gau hackerone.com | bssrf -l xyzburpcollaborator.com -p http://127.0.0.1:8080

Common error

BulkSSRF uses async concurrent http requests under the hood. If you encounter an error similar to "Too many open files" it means that there isn't enough available file descriptors on your system. You can fix this by increasing the limits available. There are lots of different guides available to increase the limits, but here is one for linux. I actually ran into this problem while writing the code.

Disclaimer

Developers have/has no responsibility or authority over any kind of:

• Legal or Law infringement by third parties and users.
• Malicious use capable of causing damage to third parties.
• Illegal or unlawful use of bulkssrf.

Thanks to 0xatul for the feedback!