Duzy commit ze smieciami

10 files changed, 651 insertions, 0 deletions

diff --git a/semestr-4/ask/lista9/gadget.s b/semestr-4/ask/lista9/gadget.s
new file mode 100644
index 0000000..6d60a63
--- /dev/null
+++ b/semestr-4/ask/lista9/gadget.s
@@ -0,0 +1,16 @@
+        .global gadget
+
+        .text
+
+# rax: 0x3c
+# rdi: 0
+# rdx: {NULL, ...}
+# rsi: path + '\n'
+gadget:
+        dec     %rax            # rax: 0x3c -> 0x3b (sys_execve)
+        mov     %rdx, %rsi      # rsi: argv = {NULL}
+        mov     %rdi, %rdx      # rdx: envp = NULL
+        lea     16(%rsp),%rdi   # rdi: path
+        ret
+
+# vim: ft=gas
diff --git a/semestr-4/ask/lista9/lazy.c b/semestr-4/ask/lista9/lazy.c
new file mode 100644
index 0000000..fb08cf7
--- /dev/null
+++ b/semestr-4/ask/lista9/lazy.c
@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+int main(void) {
+  puts("first time");
+  puts("second time");
+  return 0;
+}
diff --git a/semestr-4/ask/lista9/lista_9.tgz b/semestr-4/ask/lista9/lista_9.tgz
new file mode 100644
index 0000000..5e5c6f4
--- /dev/null
+++ b/semestr-4/ask/lista9/lista_9.tgz
diff --git a/semestr-4/ask/lista9/relo3.c b/semestr-4/ask/lista9/relo3.c
new file mode 100644
index 0000000..6aca7b6
--- /dev/null
+++ b/semestr-4/ask/lista9/relo3.c
@@ -0,0 +1,15 @@
+int relo3(int val) {
+  switch (val) {
+    case 100:
+      return val;
+    case 101:
+      return val + 1;
+    case 103:
+    case 104:
+      return val + 3;
+    case 105:
+      return val + 5;
+    default:
+      return val + 6;
+  }
+}
diff --git a/semestr-4/ask/lista9/ropex.c b/semestr-4/ask/lista9/ropex.c
new file mode 100644
index 0000000..dbeae12
--- /dev/null
+++ b/semestr-4/ask/lista9/ropex.c
@@ -0,0 +1,31 @@
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+
+/* Get string from stdin */
+void readline(FILE *in, char *p) {
+  int c;
+  while (true) {
+    c = fgetc(in);
+    if (c == EOF || c == '\n')
+      break;
+    *p++ = c;
+  }
+  *p = '\0';
+} 
+
+void echo(FILE *in) {
+  char buf[48];
+  readline(in, buf);
+  puts(buf);
+}
+
+int main(int argc, char *argv[]) {
+  FILE *in = NULL;
+  if (argc == 2)
+    in = fopen(argv[1], "rb");
+  if (in == NULL)
+    in = stdin;
+  echo(in);
+  return 0;
+} 
diff --git a/semestr-4/ask/lista9/ropex.in (1).txt b/semestr-4/ask/lista9/ropex.in (1).txt
new file mode 100644
index 0000000..902773e
--- /dev/null
+++ b/semestr-4/ask/lista9/ropex.in (1).txt
@@ -0,0 +1,7 @@
+00000000: dead c0de dead c0de dead c0de dead c0de  ................
+00000010: dead c0de dead c0de dead c0de dead c0de  ................
+00000020: dead c0de dead c0de dead c0de dead c0de  ................
+00000030: dead c0de dead c0de 731c 4000 0000 0000  ................
+00000040: f422 4000 0000 0000 0000 0000 0000 0000  ................
+00000050: 2f75 7372 2f62 696e 2f70 7974 686f 6e32  /usr/bin/python2
+00000060: 000a                                     ................
diff --git a/semestr-4/ask/lista9/ropex.in.txt b/semestr-4/ask/lista9/ropex.in.txt
new file mode 100644
index 0000000..8deabfe
--- /dev/null
+++ b/semestr-4/ask/lista9/ropex.in.txt
@@ -0,0 +1,7 @@
+00000000: dead c0de dead c0de dead c0de dead c0de  ................
+00000010: dead c0de dead c0de dead c0de dead c0de  ................
+00000020: dead c0de dead c0de dead c0de dead c0de  ................
+00000030: dead c0de dead c0de 671d 4000 0000 0000  ................
+00000040: 8e44 4900 0000 0000 0000 0000 0000 0000  ................
+00000050: 2f75 7372 2f62 696e 2f6e 7961 6e63 6174  /usr/bin/nyancat
+00000060: 000a                                     ................
\ No newline at end of file
diff --git a/semestr-4/ask/lista9/ropex.map b/semestr-4/ask/lista9/ropex.map
new file mode 100644
index 0000000..4bd12a5
--- /dev/null
+++ b/semestr-4/ask/lista9/ropex.map
@@ -0,0 +1,511 @@
+Archive member included to satisfy reference by file (symbol)
+
+/usr/lib/x86_64-linux-gnu/libc_nonshared.a(elf-init.oS)
+                              /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o (__libc_csu_init)
+
+Merging program properties
+
+Removed property 0xc0000002 to merge /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o (0x3) and gadget.o (not found)
+Removed property 0xc0000002 to merge /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o (not found) and /usr/lib/x86_64-linux-gnu/libc_nonshared.a(elf-init.oS) (0x3)
+Removed property 0xc0000002 to merge /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o (not found) and /usr/lib/gcc/x86_64-linux-gnu/9/crtendS.o (0x3)
+Removed property 0xc0000002 to merge /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o (not found) and /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crtn.o (0x3)
+
+As-needed library included to satisfy reference by file (symbol)
+
+libc.so.6                     ropex.o (fopen@@GLIBC_2.2.5)
+
+Discarded input sections
+
+ .note.gnu.property
+                0x0000000000000000       0x20 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+ .note.GNU-stack
+                0x0000000000000000        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+ .note.gnu.property
+                0x0000000000000000       0x20 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crti.o
+ .note.GNU-stack
+                0x0000000000000000        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crti.o
+ .note.GNU-stack
+                0x0000000000000000        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/crtbeginS.o
+ .note.gnu.property
+                0x0000000000000000       0x20 /usr/lib/gcc/x86_64-linux-gnu/9/crtbeginS.o
+ .note.GNU-stack
+                0x0000000000000000        0x0 ropex.o
+ .note.gnu.property
+                0x0000000000000000       0x20 ropex.o
+ .note.GNU-stack
+                0x0000000000000000        0x0 /usr/lib/x86_64-linux-gnu/libc_nonshared.a(elf-init.oS)
+ .note.gnu.property
+                0x0000000000000000       0x20 /usr/lib/x86_64-linux-gnu/libc_nonshared.a(elf-init.oS)
+ .note.GNU-stack
+                0x0000000000000000        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/crtendS.o
+ .note.gnu.property
+                0x0000000000000000       0x20 /usr/lib/gcc/x86_64-linux-gnu/9/crtendS.o
+ .note.gnu.property
+                0x0000000000000000       0x20 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crtn.o
+ .note.GNU-stack
+                0x0000000000000000        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crtn.o
+
+Memory Configuration
+
+Name             Origin             Length             Attributes
+*default*        0x0000000000000000 0xffffffffffffffff
+
+Linker script and memory map
+
+LOAD /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+LOAD /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crti.o
+LOAD /usr/lib/gcc/x86_64-linux-gnu/9/crtbeginS.o
+LOAD ropex.o
+LOAD gadget.o
+LOAD /usr/lib/gcc/x86_64-linux-gnu/9/libgcc.a
+LOAD /usr/lib/gcc/x86_64-linux-gnu/9/libgcc_s.so
+START GROUP
+LOAD /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libgcc_s.so.1
+LOAD /usr/lib/gcc/x86_64-linux-gnu/9/libgcc.a
+END GROUP
+LOAD /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libc.so
+START GROUP
+LOAD /lib/x86_64-linux-gnu/libc.so.6
+LOAD /usr/lib/x86_64-linux-gnu/libc_nonshared.a
+LOAD /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
+END GROUP
+LOAD /usr/lib/gcc/x86_64-linux-gnu/9/libgcc.a
+LOAD /usr/lib/gcc/x86_64-linux-gnu/9/libgcc_s.so
+START GROUP
+LOAD /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libgcc_s.so.1
+LOAD /usr/lib/gcc/x86_64-linux-gnu/9/libgcc.a
+END GROUP
+LOAD /usr/lib/gcc/x86_64-linux-gnu/9/crtendS.o
+LOAD /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crtn.o
+                [!provide]                        PROVIDE (__executable_start = SEGMENT_START ("text-segment", 0x0))
+                0x00000000000002a8                . = (SEGMENT_START ("text-segment", 0x0) + SIZEOF_HEADERS)
+
+.interp         0x00000000000002a8       0x1c
+ *(.interp)
+ .interp        0x00000000000002a8       0x1c /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+
+.note.gnu.build-id
+                0x00000000000002c4       0x24
+ *(.note.gnu.build-id)
+ .note.gnu.build-id
+                0x00000000000002c4       0x24 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+
+.note.ABI-tag   0x00000000000002e8       0x20
+ .note.ABI-tag  0x00000000000002e8       0x20 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+
+.hash
+ *(.hash)
+
+.gnu.hash       0x0000000000000308       0x28
+ *(.gnu.hash)
+ .gnu.hash      0x0000000000000308       0x28 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+
+.dynsym         0x0000000000000330      0x108
+ *(.dynsym)
+ .dynsym        0x0000000000000330      0x108 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+
+.dynstr         0x0000000000000438       0xaf
+ *(.dynstr)
+ .dynstr        0x0000000000000438       0xaf /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+
+.gnu.version    0x00000000000004e8       0x16
+ *(.gnu.version)
+ .gnu.version   0x00000000000004e8       0x16 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+
+.gnu.version_d  0x0000000000000500        0x0
+ *(.gnu.version_d)
+ .gnu.version_d
+                0x0000000000000500        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+
+.gnu.version_r  0x0000000000000500       0x30
+ *(.gnu.version_r)
+ .gnu.version_r
+                0x0000000000000500       0x30 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+
+.rela.dyn       0x0000000000000530       0xd8
+ *(.rela.init)
+ *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*)
+ .rela.text     0x0000000000000530        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+ *(.rela.fini)
+ *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*)
+ *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*)
+ .rela.data.rel.ro
+                0x0000000000000530        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+ .rela.data.rel.local
+                0x0000000000000530       0x18 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+ *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*)
+ *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*)
+ *(.rela.ctors)
+ *(.rela.dtors)
+ *(.rela.got)
+ .rela.got      0x0000000000000548       0x78 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+ *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*)
+ .rela.bss      0x00000000000005c0       0x18 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+ *(.rela.ldata .rela.ldata.* .rela.gnu.linkonce.l.*)
+ *(.rela.lbss .rela.lbss.* .rela.gnu.linkonce.lb.*)
+ *(.rela.lrodata .rela.lrodata.* .rela.gnu.linkonce.lr.*)
+ *(.rela.ifunc)
+ .rela.ifunc    0x00000000000005d8        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+ .rela.fini_array
+                0x00000000000005d8       0x18 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+ .rela.init_array
+                0x00000000000005f0       0x18 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+
+.rela.plt       0x0000000000000608       0x60
+ *(.rela.plt)
+ .rela.plt      0x0000000000000608       0x60 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+ *(.rela.iplt)
+                0x0000000000001000                . = ALIGN (CONSTANT (MAXPAGESIZE))
+
+.init           0x0000000000001000       0x1b
+ *(SORT_NONE(.init))
+ .init          0x0000000000001000       0x16 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crti.o
+                0x0000000000001000                _init
+ .init          0x0000000000001016        0x5 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crtn.o
+
+.plt            0x0000000000001020       0x50
+ *(.plt)
+ .plt           0x0000000000001020       0x50 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+                0x0000000000001030                puts@@GLIBC_2.2.5
+                0x0000000000001040                __stack_chk_fail@@GLIBC_2.4
+                0x0000000000001050                fgetc@@GLIBC_2.2.5
+                0x0000000000001060                fopen@@GLIBC_2.2.5
+ *(.iplt)
+
+.plt.got        0x0000000000001070        0x8
+ *(.plt.got)
+ .plt.got       0x0000000000001070        0x8 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+                0x0000000000001070                __cxa_finalize@@GLIBC_2.2.5
+
+.plt.sec
+ *(.plt.sec)
+
+.text           0x0000000000001080      0x235
+ *(.text.unlikely .text.*_unlikely .text.unlikely.*)
+ *(.text.exit .text.exit.*)
+ *(.text.startup .text.startup.*)
+ *(.text.hot .text.hot.*)
+ *(SORT_BY_NAME(.text.sorted.*))
+ *(.text .stub .text.* .gnu.linkonce.t.*)
+ .text          0x0000000000001080       0x2f /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+                0x0000000000001080                _start
+ .text          0x00000000000010af        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crti.o
+ *fill*         0x00000000000010af        0x1 
+ .text          0x00000000000010b0       0xb9 /usr/lib/gcc/x86_64-linux-gnu/9/crtbeginS.o
+ .text          0x0000000000001169       0xbb ropex.o
+                0x0000000000001169                readline
+                0x00000000000011a3                echo
+                0x00000000000011e7                main
+ .text          0x0000000000001224        0xf gadget.o
+                0x0000000000001224                gadget
+ *fill*         0x0000000000001233        0xd 
+ .text          0x0000000000001240       0x75 /usr/lib/x86_64-linux-gnu/libc_nonshared.a(elf-init.oS)
+                0x0000000000001240                __libc_csu_init
+                0x00000000000012b0                __libc_csu_fini
+ .text          0x00000000000012b5        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/crtendS.o
+ .text          0x00000000000012b5        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crtn.o
+ *(.gnu.warning)
+
+.fini           0x00000000000012b8        0xd
+ *(SORT_NONE(.fini))
+ .fini          0x00000000000012b8        0x8 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crti.o
+                0x00000000000012b8                _fini
+ .fini          0x00000000000012c0        0x5 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crtn.o
+                [!provide]                        PROVIDE (__etext = .)
+                [!provide]                        PROVIDE (_etext = .)
+                [!provide]                        PROVIDE (etext = .)
+                0x0000000000002000                . = ALIGN (CONSTANT (MAXPAGESIZE))
+                0x0000000000002000                . = SEGMENT_START ("rodata-segment", (ALIGN (CONSTANT (MAXPAGESIZE)) + (. & (CONSTANT (MAXPAGESIZE) - 0x1))))
+
+.rodata         0x0000000000002000        0x7
+ *(.rodata .rodata.* .gnu.linkonce.r.*)
+ .rodata.cst4   0x0000000000002000        0x4 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+                0x0000000000002000                _IO_stdin_used
+ .rodata.str1.1
+                0x0000000000002004        0x3 ropex.o
+
+.rodata1
+ *(.rodata1)
+
+.eh_frame_hdr   0x0000000000002008       0x34
+ *(.eh_frame_hdr)
+ .eh_frame_hdr  0x0000000000002008       0x34 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+                0x0000000000002008                __GNU_EH_FRAME_HDR
+ *(.eh_frame_entry .eh_frame_entry.*)
+
+.eh_frame       0x0000000000002040       0xd0
+ *(.eh_frame)
+ .eh_frame      0x0000000000002040       0x30 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+                                         0x2c (size before relaxing)
+ *fill*         0x0000000000002070        0x0 
+ .eh_frame      0x0000000000002070       0x28 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+                                         0x40 (size before relaxing)
+ .eh_frame      0x0000000000002098       0x18 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+                                         0x30 (size before relaxing)
+ .eh_frame      0x00000000000020b0       0x5c /usr/lib/x86_64-linux-gnu/libc_nonshared.a(elf-init.oS)
+                                         0x78 (size before relaxing)
+ .eh_frame      0x000000000000210c        0x4 /usr/lib/gcc/x86_64-linux-gnu/9/crtendS.o
+ *(.eh_frame.*)
+
+.gcc_except_table
+ *(.gcc_except_table .gcc_except_table.*)
+
+.gnu_extab
+ *(.gnu_extab*)
+
+.exception_ranges
+ *(.exception_ranges*)
+                0x0000000000003da0                . = DATA_SEGMENT_ALIGN (CONSTANT (MAXPAGESIZE), CONSTANT (COMMONPAGESIZE))
+
+.eh_frame
+ *(.eh_frame)
+ *(.eh_frame.*)
+
+.gnu_extab
+ *(.gnu_extab)
+
+.gcc_except_table
+ *(.gcc_except_table .gcc_except_table.*)
+
+.exception_ranges
+ *(.exception_ranges*)
+
+.tdata          0x0000000000003da0        0x0
+                [!provide]                        PROVIDE (__tdata_start = .)
+ *(.tdata .tdata.* .gnu.linkonce.td.*)
+
+.tbss
+ *(.tbss .tbss.* .gnu.linkonce.tb.*)
+ *(.tcommon)
+
+.preinit_array  0x0000000000003da0        0x0
+                [!provide]                        PROVIDE (__preinit_array_start = .)
+ *(.preinit_array)
+                [!provide]                        PROVIDE (__preinit_array_end = .)
+
+.init_array     0x0000000000003da0        0x8
+                0x0000000000003da0                PROVIDE (__init_array_start = .)
+ *(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*))
+ *(.init_array EXCLUDE_FILE(*crtend?.o *crtend.o *crtbegin?.o *crtbegin.o) .ctors)
+ .init_array    0x0000000000003da0        0x8 /usr/lib/gcc/x86_64-linux-gnu/9/crtbeginS.o
+                0x0000000000003da8                PROVIDE (__init_array_end = .)
+
+.fini_array     0x0000000000003da8        0x8
+                [!provide]                        PROVIDE (__fini_array_start = .)
+ *(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*))
+ *(.fini_array EXCLUDE_FILE(*crtend?.o *crtend.o *crtbegin?.o *crtbegin.o) .dtors)
+ .fini_array    0x0000000000003da8        0x8 /usr/lib/gcc/x86_64-linux-gnu/9/crtbeginS.o
+                [!provide]                        PROVIDE (__fini_array_end = .)
+
+.ctors
+ *crtbegin.o(.ctors)
+ *crtbegin?.o(.ctors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+ *(SORT_BY_NAME(.ctors.*))
+ *(.ctors)
+
+.dtors
+ *crtbegin.o(.dtors)
+ *crtbegin?.o(.dtors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ *(SORT_BY_NAME(.dtors.*))
+ *(.dtors)
+
+.jcr
+ *(.jcr)
+
+.data.rel.ro    0x0000000000003db0        0x0
+ *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*)
+ *(.data.rel.ro .data.rel.ro.* .gnu.linkonce.d.rel.ro.*)
+ .data.rel.ro   0x0000000000003db0        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+
+.dynamic        0x0000000000003db0      0x1f0
+ *(.dynamic)
+ .dynamic       0x0000000000003db0      0x1f0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+                0x0000000000003db0                _DYNAMIC
+
+.got            0x0000000000003fa0       0x60
+ *(.got.plt)
+ .got.plt       0x0000000000003fa0       0x38 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+                0x0000000000003fa0                _GLOBAL_OFFSET_TABLE_
+ *(.igot.plt)
+ *(.got)
+ .got           0x0000000000003fd8       0x28 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+ *(.igot)
+                0x0000000000004000                . = DATA_SEGMENT_RELRO_END (., 0x0)
+
+.data           0x0000000000004000       0x10
+ *(.data .data.* .gnu.linkonce.d.*)
+ .data          0x0000000000004000        0x4 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+                0x0000000000004000                data_start
+                0x0000000000004000                __data_start
+ .data          0x0000000000004004        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crti.o
+ .data          0x0000000000004004        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/crtbeginS.o
+ *fill*         0x0000000000004004        0x4 
+ .data.rel.local
+                0x0000000000004008        0x8 /usr/lib/gcc/x86_64-linux-gnu/9/crtbeginS.o
+                0x0000000000004008                __dso_handle
+ .data          0x0000000000004010        0x0 ropex.o
+ .data          0x0000000000004010        0x0 gadget.o
+ .data          0x0000000000004010        0x0 /usr/lib/x86_64-linux-gnu/libc_nonshared.a(elf-init.oS)
+ .data          0x0000000000004010        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/crtendS.o
+ .data          0x0000000000004010        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crtn.o
+
+.tm_clone_table
+                0x0000000000004010        0x0
+ .tm_clone_table
+                0x0000000000004010        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/crtbeginS.o
+ .tm_clone_table
+                0x0000000000004010        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/crtendS.o
+
+.data1
+ *(.data1)
+                0x0000000000004010                _edata = .
+                [!provide]                        PROVIDE (edata = .)
+                0x0000000000004010                . = .
+                0x0000000000004010                __bss_start = .
+
+.bss            0x0000000000004010       0x10
+ *(.dynbss)
+ *fill*         0x0000000000004010        0x0 
+ .dynbss        0x0000000000004010        0x8 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+                0x0000000000004010                stdin@@GLIBC_2.2.5
+ *(.bss .bss.* .gnu.linkonce.b.*)
+ .bss           0x0000000000004018        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o
+ .bss           0x0000000000004018        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crti.o
+ .bss           0x0000000000004018        0x1 /usr/lib/gcc/x86_64-linux-gnu/9/crtbeginS.o
+ .bss           0x0000000000004019        0x0 ropex.o
+ .bss           0x0000000000004019        0x0 gadget.o
+ .bss           0x0000000000004019        0x0 /usr/lib/x86_64-linux-gnu/libc_nonshared.a(elf-init.oS)
+ .bss           0x0000000000004019        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/crtendS.o
+ .bss           0x0000000000004019        0x0 /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crtn.o
+ *(COMMON)
+                0x0000000000004020                . = ALIGN ((. != 0x0)?0x8:0x1)
+ *fill*         0x0000000000004019        0x7 
+
+.lbss
+ *(.dynlbss)
+ *(.lbss .lbss.* .gnu.linkonce.lb.*)
+ *(LARGE_COMMON)
+                0x0000000000004020                . = ALIGN (0x8)
+                0x0000000000004020                . = SEGMENT_START ("ldata-segment", .)
+
+.lrodata
+ *(.lrodata .lrodata.* .gnu.linkonce.lr.*)
+
+.ldata          0x0000000000006020        0x0
+ *(.ldata .ldata.* .gnu.linkonce.l.*)
+                0x0000000000006020                . = ALIGN ((. != 0x0)?0x8:0x1)
+                0x0000000000006020                . = ALIGN (0x8)
+                0x0000000000004020                _end = .
+                [!provide]                        PROVIDE (end = .)
+                0x0000000000006020                . = DATA_SEGMENT_END (.)
+
+.stab
+ *(.stab)
+
+.stabstr
+ *(.stabstr)
+
+.stab.excl
+ *(.stab.excl)
+
+.stab.exclstr
+ *(.stab.exclstr)
+
+.stab.index
+ *(.stab.index)
+
+.stab.indexstr
+ *(.stab.indexstr)
+
+.comment        0x0000000000000000       0x2a
+ *(.comment)
+ .comment       0x0000000000000000       0x2a /usr/lib/gcc/x86_64-linux-gnu/9/crtbeginS.o
+                                         0x2b (size before relaxing)
+ .comment       0x000000000000002a       0x2b ropex.o
+ .comment       0x000000000000002a       0x2b /usr/lib/gcc/x86_64-linux-gnu/9/crtendS.o
+
+.gnu.build.attributes
+ *(.gnu.build.attributes .gnu.build.attributes.*)
+
+.debug
+ *(.debug)
+
+.line
+ *(.line)
+
+.debug_srcinfo
+ *(.debug_srcinfo)
+
+.debug_sfnames
+ *(.debug_sfnames)
+
+.debug_aranges  0x0000000000000000       0x30
+ *(.debug_aranges)
+ .debug_aranges
+                0x0000000000000000       0x30 ropex.o
+
+.debug_pubnames
+ *(.debug_pubnames)
+
+.debug_info     0x0000000000000000      0x49e
+ *(.debug_info .gnu.linkonce.wi.*)
+ .debug_info    0x0000000000000000      0x49e ropex.o
+
+.debug_abbrev   0x0000000000000000      0x19b
+ *(.debug_abbrev)
+ .debug_abbrev  0x0000000000000000      0x19b ropex.o
+
+.debug_line     0x0000000000000000      0x188
+ *(.debug_line .debug_line.* .debug_line_end)
+ .debug_line    0x0000000000000000      0x188 ropex.o
+
+.debug_frame    0x0000000000000000       0xa8
+ *(.debug_frame)
+ .debug_frame   0x0000000000000000       0xa8 ropex.o
+
+.debug_str      0x0000000000000000      0x2f4
+ *(.debug_str)
+ .debug_str     0x0000000000000000      0x2f4 ropex.o
+                                        0x333 (size before relaxing)
+
+.debug_loc      0x0000000000000000      0x254
+ *(.debug_loc)
+ .debug_loc     0x0000000000000000      0x254 ropex.o
+
+.debug_macinfo
+ *(.debug_macinfo)
+
+.debug_weaknames
+ *(.debug_weaknames)
+
+.debug_funcnames
+ *(.debug_funcnames)
+
+.debug_typenames
+ *(.debug_typenames)
+
+.debug_varnames
+ *(.debug_varnames)
+
+.debug_pubtypes
+ *(.debug_pubtypes)
+
+.debug_ranges
+ *(.debug_ranges)
+
+.debug_macro
+ *(.debug_macro)
+
+.debug_addr
+ *(.debug_addr)
+
+.gnu.attributes
+ *(.gnu.attributes)
+
+/DISCARD/
+ *(.note.GNU-stack)
+ *(.gnu_debuglink)
+ *(.gnu.lto_*)
+OUTPUT(ropex elf64-x86-64)
diff --git a/semestr-4/ask/lista9/test.c b/semestr-4/ask/lista9/test.c
new file mode 100644
index 0000000..1dae111
--- /dev/null
+++ b/semestr-4/ask/lista9/test.c
@@ -0,0 +1,7 @@
+void foobar() {}
+
+static const struct {
+  char a[3]; int b; long c; float pi;
+} baz = { "abc", 42, -3, 1.4142 };
+
+long array[100];
\ No newline at end of file
diff --git a/semestr-4/ask/lista9/test.s b/semestr-4/ask/lista9/test.s
new file mode 100644
index 0000000..5e60585
--- /dev/null
+++ b/semestr-4/ask/lista9/test.s
@@ -0,0 +1,50 @@
+	.file	"test.c"
+	.text
+	.globl	foobar
+	.type	foobar, @function
+foobar:
+.LFB0:
+	.cfi_startproc
+	endbr64
+	pushq	%rbp
+	.cfi_def_cfa_offset 16
+	.cfi_offset 6, -16
+	movq	%rsp, %rbp
+	.cfi_def_cfa_register 6
+	nop
+	popq	%rbp
+	.cfi_def_cfa 7, 8
+	ret
+	.cfi_endproc
+.LFE0:
+	.size	foobar, .-foobar
+	.section	.rodata
+	.align 16
+	.type	baz, @object
+	.size	baz, 24
+baz:
+	.ascii	"abc"
+	.zero	1
+	.long	42
+	.quad	-3
+	.long	1068827777
+	.zero	4
+	.comm	array,800,32
+	.ident	"GCC: (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0"
+	.section	.note.GNU-stack,"",@progbits
+	.section	.note.gnu.property,"a"
+	.align 8
+	.long	 1f - 0f
+	.long	 4f - 1f
+	.long	 5
+0:
+	.string	 "GNU"
+1:
+	.align 8
+	.long	 0xc0000002
+	.long	 3f - 2f
+2:
+	.long	 0x3
+3:
+	.align 8
+4: