Chmod 0777 Polymorphic Shellcode

This is my first hand written shellcode for linux which I wrote it for fun and exploration. I am a bit new to shellcoding in *nix environments. This shellcode changes the permission of the shadow file in linux/x86 system to 0777. According to the Linux programmer’s manual of chmod it takes two arguments.

#include <sys/stat.h>

int chmod(const char *path, mode_t mode);



Rewarded by VMware

For reporting a security issues related to their web application I got rewarded with a license key for VMware 10 and a nice cap.

ZTE WXV10 W300 Multiple Vulnerabilities

Default Password Being Used (CVE-2014-4018)

In ZTE routers the username is a constant which is “admin” and the password by default is “admin”

ROM-0 Backup File Disclosure (CVE-2014-4019)

There is a rom-0 backup file contains sensitive information such as the passwords. There is a disclosure in which anyone can download that file without any authentication by a simple GET request. (more…)

ZTE and TP-Link RomPager DoS


I think by now you know the security issues disclosed related to TP-Link routers. I’ve noticed that some ZTE and TP-Link routers have the same ADSL firmware which is “FwVer: HwVer:T14.F7_5.0”. I was curious to test the web application and I found out that the embedded server which is “RomPager” cannot handle fairly large POST requests.
Tested Routers: