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Implemented --patterntype.

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yellows8 2015-06-05 22:02:30 -04:00
parent a7e5b44d6c
commit 421a3a88a5
1 changed files with 19 additions and 4 deletions
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23
ropgadget_patternfinder.c
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@ -98,6 +98,7 @@ int main(int argc, char **argv)
{ {
int argi; int argi;
int ret; int ret;
int patterntype = -1;
int hashpattern_set = 0; int hashpattern_set = 0;
unsigned int found, findtarget=1; unsigned int found, findtarget=1;
unsigned char *filebuf = NULL; unsigned char *filebuf = NULL;
@ -118,6 +119,7 @@ int main(int argc, char **argv)
printf("Usage:\n"); printf("Usage:\n");
printf("ropgadget_patternfinder <binary path> <options>\n"); printf("ropgadget_patternfinder <binary path> <options>\n");
printf("Options:\n"); printf("Options:\n");
printf("--patterntype=<type> Selects the pattern-type, which must be one of the following(this option is required): sha256.\n");
printf("--patternsha256=<bindata> Hash every --patternsha256size bytes in the binary, for locating the target pattern. The input bindata(sha256 hash) size must be 0x20-bytes.\n"); printf("--patternsha256=<bindata> Hash every --patternsha256size bytes in the binary, for locating the target pattern. The input bindata(sha256 hash) size must be 0x20-bytes.\n");
printf("--patternsha256size=0x<hexval> See --patternsha256.\n"); printf("--patternsha256size=0x<hexval> See --patternsha256.\n");
printf("--stride=0x<hexval> In the search loop, this is the value that the pos is increased by at the end of each interation. By default this is 0x4.\n"); printf("--stride=0x<hexval> In the search loop, this is the value that the pos is increased by at the end of each interation. By default this is 0x4.\n");
@ -130,6 +132,19 @@ int main(int argc, char **argv)
for(argi=2; argi<argc; argi++) for(argi=2; argi<argc; argi++)
{ {
if(strncmp(argv[argi], "--patterntype=", 14)==0)
{
if(strncmp(&argv[argi][14], "sha256", 6)==0)
{
patterntype = 0;
}
else
{
printf("Invalid pattern-type.\n");
ret = 5;
}
}
if(strncmp(argv[argi], "--patternsha256=", 16)==0) if(strncmp(argv[argi], "--patternsha256=", 16)==0)
{ {
if(strlen(&argv[argi][16]) != 0x20*2) if(strlen(&argv[argi][16]) != 0x20*2)
@ -167,15 +182,15 @@ int main(int argc, char **argv)
if(ret!=0)return ret; if(ret!=0)return ret;
if(hashpattern_set && hashblocksize==0) if(patterntype==-1)
{ {
printf("--patternsha256size must be used when --patternsha256 is used.\n"); printf("No pattern-type specified.\n");
return 5; return 5;
} }
if(!hashpattern_set) if(patterntype==0 && (hashpattern_set && hashblocksize==0))
{ {
printf("No pattern specified.\n"); printf("--patternsha256size must be used when --patternsha256 is used.\n");
return 5; return 5;
} }