Category : System hacking Level 2 Level Goal: Create a special tar file Helpful Reading Material GNU tar manual Code listing (level2.c) 1 #include 2 #include 3 #include 4 5 6 int main(int argc, char **argv) 7 { 8 char *args[] = { "/bin/tar", "cf", "/tmp/ownership.$$.tar", argv[1], argv[2], argv[3] }; 9 execv(args[0], args); 10 } Summary : socket programming , little endian , sum all receive dat..
Wargame/Vortex.overthewire.org
Category : System hacking Level 1 Canary Values We are looking for a specific value in ptr. You may need to consider how bash handles EOF.. Reading Material Smashing the Stack for Fun and Profit Code listing (level1.c) 1 #include 2 #include 3 #include 4 #include 5 6 7 #define e(); if(((unsigned int)ptr & 0xff000000)==0xca000000) { setresuid(geteuid(), geteuid(), geteuid()); execlp("/bin/sh", "sh..
Category : System hacking Level 0 Level Goal: Your goal is to connect to port 5842 on vortex.labs.overthewire.org and read in 4 unsigned integers in host byte order. Add these integers together and send back the results to get a username and password for level 1.Note: that vortex is on an x86 machine (meaning, a little endian architecture) Helpful Reading Material C Programming Introduction Netw..
