c - Modify env variable name inside a library with hex editor? -

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is possible modify environmental variable's name inside library sort of editor. i'm thinking maybe hex editor ?

i wish modify name without altering length: envfoobar (9 chars) yellowbar (9 chars)

obviously, recompilation perfect not know exact flags used compile library.

what's stopping you? can use text editor (as long it's decent editor , knows how handle binary data, vim does). if library referring name of environment variable through string, , string in library in data segment (ie. it's not string built @ runtime), it's trivial edit library in way. don't delete or introduce new characters. i've done under linux. other oses may digitally sign binaries , prevent working. oses use standard checksum or hash in case you'll have recompute it.


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