mischard

Git Hoarder

kalmarctf

Task: Service runs git clone on user-provided URL, goal is RCE to read /app/flag.txt. Solution: Chain 3 clones - create symlink to HOME, write .gitconfig via symlink to enable ext:: protocol, then RCE via ext::sh command.

$ ls tags/ techniques/

multi_stage rce git symlink subprocess url_parsing git_clone gitconfig ext_protocol

git_url_destination_parsingsymlink_clone_redirectgitconfig_protocol_injectionext_protocol_rcechained_clone_attack

Analysis

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$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

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