TopGit tracks yangyangwithgnu/bypass_disablefunc_via_LD_PRELOAD on GitHub. The project has 1.2k stars. bypass disable_functions via LD_PRELOA (no need /usr/sbin/sendmail)
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I know, you disabling all dangerous functions, run operating system commands, such as system() or exec() or shell_exec() and even less known functions such as dl(), through the PHP director defined in php.ini.
Everybody knows, unix-like supply LD_PRELOAD variable,to provides the possibility of pre-load a share object (*.so) before the others. so I'd like to be able to inject some code into an application. In PHP, the mail() function startups /usr/sbin/sendmail inside, script kiddy hooks some system API in sendmail (such as getuid()) to inject evil code, not bad, BUT if bluuuue guys uninstall sendmail tool, now, what you say?
don't worry, I found a new way, whatever sendmail existence, red team always bypass disable_functions via LD_PRELOAD.
there are two key files in this repository, bypass_disablefunc.php and bypass_disablefunc_x64.so.
There are three GET options of bypass_disablefunc.php: cmd, outpath and sopath. the options are pretty straightforward, cmd is your evil command, outpath is command output file path (readable and writeable), sopath is the absolute path where our share object bypass_disablefunc_x64.so. For example:
How active is development on yangyangwithgnu/bypass_disablefunc_via_LD_PRELOAD?
The most recent commit recorded on yangyangwithgnu/bypass_disablefunc_via_LD_PRELOAD was 5.0 years ago, based on the GitHub push timestamp. The repository has 279 forks — one of the better signals of community interest.
How many stars does yangyangwithgnu/bypass_disablefunc_via_LD_PRELOAD have?
yangyangwithgnu/bypass_disablefunc_via_LD_PRELOAD has 1.2k GitHub stars — refresh the page for the live number, or check github.com/yangyangwithgnu/bypass_disablefunc_via_LD_PRELOAD. TopGit mirrors GitHub's count but does not claim minute-by-minute accuracy.
Is yangyangwithgnu/bypass_disablefunc_via_LD_PRELOAD open source?
TopGit's metadata for yangyangwithgnu/bypass_disablefunc_via_LD_PRELOAD does not record a license. Most public repositories on GitHub ARE open source, but the exact terms vary — verify by opening the LICENSE file directly.
What is yangyangwithgnu/bypass_disablefunc_via_LD_PRELOAD?
yangyangwithgnu/bypass_disablefunc_via_LD_PRELOAD (yangyangwithgnu/bypass_disablefunc_via_LD_PRELOAD) is a C project on GitHub. From the project's own README: bypass disable_functions via LD_PRELOA (no need /usr/sbin/sendmail)
Where do I read more about yangyangwithgnu/bypass_disablefunc_via_LD_PRELOAD?
This TopGit page is a snapshot — the READ ME tab shows the project's own README content (links stripped, images preserved). The GitHub repository at github.com/yangyangwithgnu/bypass_disablefunc_via_LD_PRELOAD is the definitive source.
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