to zbzb:
IDA Starter Licenses start at 539 USD or 419 EUR. IDA Professional Licenses start at 1059 USD / 809 EUR.
好贵啊，Starter折成RMB也3000+了，真心买不起。。
我看到好多人都用正版，大家都是有钱人吗？
IDA 防盗版做得很严格的。一般公司都不敢泄漏。我看了《The IDA Pro Book 2nd Edition》一书关于其防盗版的策略：
IDA thus utilizes several antipiracy
techniques in an effort to curb piracy and enforce licensing restrictions.
The first technique to be aware of: Each copy of IDA is watermarked in
order to uniquely tie it to its purchaser. If a copy of IDA turns up on a warez
site, Hex-Rays has the ability to track that copy back to the original buyer,
who will then be blacklisted from future sales. It is not uncommon to find
discussions related to “leaked” copies of IDA on the IDA support forums at
Hex-Rays.
Another technique IDA uses to enforce its licensing policies involves
scanning for additional copies of IDA running on the local network. When
the Windows version of IDA is launched, a UDP packet is broadcast on
port 23945, and IDA waits for responses to see whether other instances of
IDA running under the same license key are present on the same subnet.
The number of responses is compared to the number of seats to which the
license applies, and if too many copies are found on the network, IDA will
refuse to start. Do note, however, that it is permissible to run multiple
instances of IDA on a single computer with a single license.
The final method of license enforcement centers on the use of key files
tied to each purchaser. At startup, IDA searches for a valid ida.key file. Failure
to locate a valid key file will cause IDA to shut down immediately. Key files
are also used in determining eligibility for upgraded copies of IDA. In essence,
ida.key represents your purchase receipt, and you should safeguard it to ensure
that you remain eligible for future upgrades.
