1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
/***************************************************Project Mutator****************************************************/
/*first line intentionally left blank.*/
/*bruiser's ram dump module*/
/*Copyright (C) 2018 Farzad Sadeghi
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 3
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.*/
/***********************************************************************************************************/
//#include "ramdump.h"
#include <inttypes.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ptrace.h>
#include <sys/wait.h>
#include <unistd.h>
/***********************************************************************************************************/
void dump_memory_region(FILE* pMemFile, uint64_t start_address, uint64_t length, FILE* out_file) {
uint64_t address;
int pageLength = 4096;
fseeko(pMemFile, start_address, SEEK_SET);
unsigned char page[pageLength];
for (address=start_address; address < start_address + length; address += pageLength) {
fread(&page, 1, pageLength, pMemFile);
fwrite(&page, 1, pageLength, out_file);
}
}
void dump_ram(unsigned int pid, FILE* out_file) {
uint64_t ptraceResult = ptrace(PTRACE_ATTACH, pid, NULL, NULL);
if (ptraceResult < 0) {
printf("ramdump: unable to attach to the pid specified\n");
return;
}
wait(NULL);
char mapsFilename[1024];
char proc_str[6];
sprintf(proc_str, "%d", pid);
sprintf(mapsFilename, "/proc/%s/maps", proc_str);
FILE* pMapsFile = fopen(mapsFilename, "r");
char memFilename[1024];
sprintf(memFilename, "/proc/%s/mem", proc_str);
FILE* pMemFile = fopen(memFilename, "r");
char line[256];
while (fgets(line, 256, pMapsFile) != NULL) {
uint64_t start_address;
uint64_t end_address;
sscanf(line, "%08lx-%08lx\n", &start_address, &end_address);
dump_memory_region(pMemFile, start_address, end_address - start_address, out_file);
}
fclose(pMapsFile);
fclose(pMemFile);
ptrace(PTRACE_CONT, pid, NULL, NULL);
ptrace(PTRACE_DETACH, pid, NULL, NULL);
}
#pragma weak main
int main(int argc, char **argv) {
if (argc != 2) {
printf("what happened to the pid?\n");
return 1;
}
FILE* out_file = fopen("/tmp/ramdump", "w");
int pid = atoi(argv[1]);
dump_ram(pid, out_file);
fclose(out_file);
return 0;
}
/***********************************************************************************************************/
/*last line is intentionally left blank*/
|
