9447 writeup reverse_rolling
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The document discusses reversing an encryption algorithm to find a flag. It notes that the encryption starts with "9447" and relates each character's index i to the character at index i-4 with an offset. The offsets provided decode to the flag "9447{9447rollingisfun}". References for more information are also provided.
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What can go wrong if you allow each service to access the database directly? In a startup, this seems like a quick and easy solution, but as the system scales, problems appear that no one could have guessed.
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CurieTech AI in Action – Accelerate MuleSoft Development
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This presentation demonstrates how CurieTech AI’s purpose-built agents empower MuleSoft developers to create integration workflows faster, more accurately, and with less manual effort
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Key Highlights:
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DataWeave automation: Generate mappings from tables or samples—95%+ complete within minutes
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Efficient code reviews: Gain intelligent feedback on flows, patterns, and error handling
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9447 writeup reverse_rolling
- 1. Rolling
- 2. ? Windows 8.1 ? IDA 6.6 ? Kali Linux adm64 ? EDB (動態調適器)
- 3. Libc 6 required ? To solve it, add the following line to the sources.list: ? deb http://ftp.debian.org/debian sid main ? Then install a new linbc: ? apt-get update ? apt-get -t sid install libc6-dev
- 4. main
- 5. 4006c7
- 6. Call rax? ? 轉動態調適 ? 過 4006c7 直接 F7 進 call rax ? 觀察1 ? 參數給 test
- 7. ? "57 102 108 97 103 115 115 116 97 114 116 119 105 116 104 57", ? which is "9flagsstartwith9"
- 8. ? 觀察二 ? Start with 9: 參數給 “9abc123” ? rax 指向另一檢查 function
- 11. 結論 ? 開頭是 9447 ? 接下來 ith char 都 relate 到 (i-4)th char ? 用 (i-4)th char + {offset} ? Offsets: +57 +59 +56 +53 -9 -1 -5 -3 +10 -8 +14 +5 ? => flag is: “9447{9447rollingisfun}”