pocorgtfo VS CVE-2021-4034

Your best bet here is to get the base address nailed down (assuming it’s a flat/monolithic image). There are a handful of utilities floating around (binbloom, basefind2) that use various pointer heuristics to try to guess the base address. There’s also a nice trick detailed in PoC||GTFO that you can use pretty reliably.

execute the pdf: https://github.com/angea/pocorgtfo

1) People systematically underestimate how easy it is to create collisions that still do something "interesting", like being polyglots. See PoC||GTFO, specifically anything by Ange Albertini, for examples; grep https://github.com/angea/pocorgtfo/blob/master/README.md for "MD5".

1bis) You can use an existing collision to create new collisions. People seem to think you need to generate all the work again from scratch.

1cis) The files do not need to be gigantic.

2) You can do the collision in advance, and publish the malicious version later. What it accomplishes is that the concept of "this Git hash unambiguously specifies a revision" no longer works, and one of them can be malicious.

3) The standard should be "obviously safe beyond a reasonable doubt", not "not obviously unsafe to a non-expert". By the latter standard, pretty much any random encryption construction is fine.

If you want to learn more how these things work I'd highly suggest going through the PoC||GTFO archive (https://github.com/angea/pocorgtfo/blob/master/README.md) and check out entries by Ange Albertini or entries named like "This ZIP is also a PDF".