elf: Resolve more relocations into GOT entries #2277
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So far only relocations pointing to external symbols were considered when filling GOT. Relocations in libc are a different thing, often found in CTF challenges (libc with partial RELRO has many interesting overridable function pointers, like strlen & strchrnul).
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Nice, is it possible to add a test for this? |
* Reverse mapping symbols-addresses cannot be a simple dict, as multiple symbols can be located at the same addres. * Add docs for loading relr relocation symbols to GOT.
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So far only relocations pointing to external symbols were considered when filling GOT. Relocations in libc are a different thing, often found in CTF challenges (libc with partial RELRO has many interesting overridable function pointers, like strlen & strchrnul).