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move the value one into eax | mov eax, 1 |
declare code section | section .text |
put /bin/sh into the ecx register | push long 0x68732f2f \n push long 0x6e69622f \n mov ecx, esp |
jump short to the _load_data label | jmp short _load_data |
move the contents of the esi register into the long starting at the address [esi+18] | mov long [esi+18], esi |
push the byte 2 onto the stack | push byte 2 |
put syscall sigaction into the eax register | push byte 0x43 \n pop eax |
push zero onto the stack | xor ecx, ecx \n push ecx |
load the effective address of ebx into the edi register | lea edi, [ebx] |
move 0ah into eax | mov eax, 0ah |
declare the three label | three: |
call the cont function | call cont |
push the dword 0x62732f2f onto the stack | push dword 0x62732f2f |
push 0xefffff7f onto the stack | push 0xefffff7f |
if the contents of the eax register is not zero then jump short to the label _parent | test eax, eax \n jnz short _parent |
define ip equal to 0x0100007f | _ip equ 0x0100007f |
system call waitpid | mov eax, 7 |
add one to the doubleword integer stored at location var | inc dword [var] |
move 0x6 into al | mov al, 0x6 |
add 0x2 to the contents in ebx and save the result in ebx | add ebx, 0x2 |
increment dl | inc dl |
subtract the contents of eax from the contents of eax | sub eax, eax |
move linefeed character into eax | mov eax, 0ah |
if zero jump to the next_cycle label | jz next_cycle |
push the word 0x6465 onto the stack | push word 0x6465 |
jump short to stage | jmp short stage |
move command into ebx | mov ebx, command |
push the 0x1 onto the stack | push 0x1 |
system call sigaction | push byte 0x43 |
declare a word uninitialized value referred to as location x | x dw ? |
define the _while_loop label | _while_loop: |
make the system call to close the file | mov eax, 6 |
move 0x01 into al | mov al, 0x01 |
pop the last element pushed onto the stack into cx | pop cx |
add decimal 2 to eax register | add eax, 2 |
decrement the contents of the ecx register and jump to the loop label if the result is not negative | dec ecx \n jns loop |
move shellcodelen into cl | mov cl, shellcodelen |
push 0x7374736f onto the stack | push 0x7374736f |
push the 0x204c4c41 onto the stack | push 0x204c4c41 |
push 0x68732f6e to the stack | push 0x68732f6e |
move the address of msg2 into eax | mov eax, msg2 |
system call open | mov eax, 5 |
add 4 to esi | add esi, 4 |
push the byte 0x3 onto the stack | push byte 0x3 |
move 0x0b into al | mov al, 0x0b |
move 10 into esi | mov esi, 10 |
subtract the byte value 8 from the contents of ebx and save the result in ebx | sub ebx, byte 8 |
move the contents at the memory location specified by the result of the operation [ebp-8] into the ebx register | mov ebx, [ebp-8] |
increment ebx | inc ebx |
subtract the contents of bx from the contents of dx | sub dx, bx |
jump to the exit label if the contents of the eax register is equal to the contents of the ebx register else move the value 0x4 into the al register | cmp eax, ebx \n je exit \n mov al, 0x4 |
move 1 into ebx | mov ebx, 1 |
add 0x3f3f3f3f to the contents in esi and save the result in esi | add esi, 0x3f3f3f3f |
if the contents of the bl register is greater than or equal to the value 78h then jump to the memory location loc_402B1D | cmp bl, 78h \n jge short loc_402B1D |
push the word 0xc005 to the stack | push word 0xc005 |
move the contents of bx into ax | mov ax, bx |
if the unsigned contents of the cl register is lower than the unsigned contents of the dl register then jump to the label l3 | cmp cl, dl \n jb l3 |
add the value 2 to the contents of the al register | add al, 2 |
jump short to the callit label | jmp short callit |
allocate memory for local variables | sub esp, 4 |