Visertube-v1.3-nulled.zip -

Open the unpacked binary in Ghidra (or IDA Pro).

To be thorough, we can let the program itself print the flag. The load_resource → decode_string → MessageBoxA chain is called in sub_4017B0. Patch the binary to write the decoded string to a file:

This step isn’t required for the CTF, but it demonstrates that the flag really is produced by the binary itself. visertube-v1.3-nulled.zip

Instead of resorting to nulled software, consider the following:

Beyond the practical risks, there's also an ethical consideration. Software development requires significant time, effort, and resources. By choosing to use nulled software, users deny developers the compensation for their work. This not only undermines the economic incentive for software development but also discourages innovation in the tech industry. Open the unpacked binary in Ghidra (or IDA Pro)

Without specific details on what ViserTube is used for, we can only speculate on its intended purpose. However, given the name, it might be related to video processing, streaming, or downloading, possibly interacting with YouTube or similar video platforms.

Instead of resorting to nulled software, users can consider: This step isn’t required for the CTF, but

Scrolling through the decompiled view, two functions stand out:

| Address | Description | |---------|-------------| | 0x4023A0 | decode_string – takes a pointer + length, XORs each byte with a single‑byte key stored in 0x404500. | | 0x402560 | load_resource – calls FindResourceA, LoadResource, LockResource. The resource ID is 101. |

The presence of a resource loader + a custom decoder strongly suggests that the flag is stored as an encrypted resource.