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2024 | MoveCTF

Checkin

#move

题目

checkin.move 
module movectf::checkin {
    use sui::event;
    use sui::tx_context::{Self, TxContext};

    const ESTRING:u64 = 0;

    struct Flag has copy, drop {
        sender: address,
        flag: bool,
    }

    public entry fun get_flag(string: vector<u8>, ctx: &mut TxContext) {
        assert!(string == b"MoveBitCTF",ESTRING);
        event::emit(Flag {
            sender: tx_context::sender(ctx),
            flag: true,
        });
    }
}
Move.toml 
[package]
name = "movectf"
version = "0.0.1"

[dependencies]
Sui = { git = "https://github.com/MystenLabs/sui.git", subdir = "crates/sui-framework/packages/sui-framework", rev = "framework/testnet" }

[addresses]
movectf = "0x0"

解题思路

  • 切换网络

    $ sui client new-env --alias movectf --rpc http://8.217.173.179:9001
$ sui client switch --env movectf

  • 调用 get_flag() 函数以触发 Flag 事件

    $ sui client call --function get_flag --args MoveBitCTF --module checkin --package <packageId> --gas-budget 10000000

Flag

flag{31pSrCCf7pjK}_CHECKINNEW

References

最后更新: 2024年1月16日 17:43:23
Contributors: YanhuiJessica

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