Roronoa

Protostar Stack7 https://exploit.education/protostar/stack-seven/ Stack Seven :: Andrew Griffiths' Exploit Education Stack Seven Stack6 introduces return to .text to gain code execution. The metasploit tool “msfelfscan” can make searching for suitable instructions very easy, otherwise looking through objdump output will suffice. This level is at /opt/protostar/bin/st exploit.education 위 사이트에 접속을..

Protostar Stack6 https://exploit.education/protostar/stack-six/ Stack Six :: Andrew Griffiths' Exploit Education Stack Six Stack6 looks at what happens when you have restrictions on the return address. This level can be done in a couple of ways, such as finding the duplicate of the payload ( objdump -s will help with this), or ret2libc , or even return orientated pro exploit.education 위 사이트에 접속을..

Protostar Stack5 RTL 기법을 이용하여 문제풀이 https://exploit.education/protostar/stack-five/ Stack Five :: Andrew Griffiths' Exploit Education Stack Five Stack5 is a standard buffer overflow, this time introducing shellcode. This level is at /opt/protostar/bin/stack5 Hints At this point in time, it might be easier to use someone elses shellcodeIf debugging the shellcode, use \xcc (int3) to stop t exploit...

Protostar Stack5 https://exploit.education/protostar/stack-five/ Stack Five :: Andrew Griffiths' Exploit Education Stack Five Stack5 is a standard buffer overflow, this time introducing shellcode. This level is at /opt/protostar/bin/stack5 Hints At this point in time, it might be easier to use someone elses shellcodeIf debugging the shellcode, use \xcc (int3) to stop t exploit.education 위 사이트에 접..

shell_basic 문제 https://dreamhack.io/wargame/challenges/410/ shell_basic Description 입력한 셸코드를 실행하는 프로그램입니다. main 함수가 아닌 다른 함수들은 execve, execveat 시스템 콜을 사용하지 못하도록 하며, 풀이와 관련이 없는 함수입니다. flag 위치와 이름은 /home/ dreamhack.io 위의 링크에 들어가면 문제를 풀 수있다. 문제 설명 main함수가 아닌 다른 함수들은 execve와 execveat와 같은 시스템 콜을 사용하지 못한다고하고, flag의 위치는 /home/shell_basic/flag_name_is_loooooong 위치에 있다. execve와 같은 시스템콜을 사용하지 못하는 것을보면 파일을..

Protostar Stack4 https://exploit.education/protostar/stack-four/ Stack Four :: Andrew Griffiths' Exploit Education Stack Four Stack4 takes a look at overwriting saved EIP and standard buffer overflows. This level is at /opt/protostar/bin/stack4 Hints A variety of introductory papers into buffer overflows may help.gdb lets you do “run < input”EIP is not directly aft exploit.education 위 사이트에 접속을 하..

Protostar Stack3 https://exploit.education/protostar/stack-three/ Stack Three :: Andrew Griffiths' Exploit Education Stack Three Stack3 looks at environment variables, and how they can be set, and overwriting function pointers stored on the stack (as a prelude to overwriting the saved EIP) Hints both gdb and objdump is your friend you determining where the win() function exploit.education 위 사이트에..