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ropgadget_patternfinder
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Implemented --dataload and reset plainout state to the default settings for each script line.

This commit is contained in:
yellows8 2015-06-09 17:52:03 -04:00
parent 64b0af9a13
commit 856c47c525
1 changed files with 36 additions and 4 deletions
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40
ropgadget_patternfinder.c
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@ -16,6 +16,8 @@ unsigned char *filebuf = NULL, *patterndata = NULL, *patternmask = NULL;
size_t filebufsz=0, hashblocksize=0;
size_t patterndata_size=0, patternmask_size=0;
unsigned int dataload_offset = 0, dataload_enabled = 0;
int enable_script = 0;
char line_prefix[256];
@ -210,6 +212,12 @@ int parse_param(char *param, int type)
sscanf(&param[11], "0x%x", &baseaddr);
}
if(strncmp(param, "--dataload=", 11)==0)
{
dataload_enabled = 1;
sscanf(&param[11], "0x%x", &dataload_offset);
}
if(strncmp(param, "--plainout", 10)==0)
{
plainout = 1;
@ -315,9 +323,26 @@ int locate_pattern()
if(tmpval)
{
if(!plainout)printf("Found the pattern at ");
printf("%s0x%x", line_prefix, ((unsigned int)pos) + baseaddr);
if(!plainout)printf(".");
if(!dataload_enabled)
{
if(!plainout)printf("Found the pattern at ");
printf("%s0x%x", line_prefix, ((unsigned int)pos) + baseaddr);
if(!plainout)printf(".");
}
else
{
if(!plainout)
{
printf("Found the pattern at ");
printf("%s0x%x", line_prefix, ((unsigned int)pos) + baseaddr);
printf(", u32 value at +0x%x: 0x%x.", dataload_offset, *((unsigned int*)&filebuf[((unsigned int)pos) + dataload_offset]));
}
else
{
printf("%s0x%x", line_prefix, *((unsigned int*)&filebuf[((unsigned int)pos) + dataload_offset]));
}
}
printf("\n");
found++;
if(found==findtarget)break;
@ -367,6 +392,12 @@ int parse_script(FILE *fscript)
patternmask_size=0;
}
dataload_enabled = 0;
dataload_offset = 0;
plainout = 0;
memset(line_prefix, 0, sizeof(line_prefix));
while(*strptr)
{
if(strptr[0] == ' ')
@ -454,8 +485,9 @@ int main(int argc, char **argv)
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("--findtarget=0x<hexval> Stop searching once this number of matches were found, by default this is 0x1. When this is 0x0, this will not stop until the end of the binary is reached.\n");
printf("--baseaddr=0x<hexval> This is the value which is added to the located offset when printing it, by default this is 0x0.\n");
printf("--dataload=0x<hexval> When used, the u32 at the specified offset relative to the located pattern location, is returned instead of the pattern offset. --baseaddr does not apply to the loaded value.\n");
printf("--plainout[=<prefix text>] Only print the located offset/address, unless an error occurs. If '=<text>' is specified, print that before printing the located offset/address.\n");
printf("--script=<path> Specifies a script from which to load params from(identical to the cmd-line params), each line is for a different pattern to search for. Each param applies to the current line, and all the lines after that until that param gets specified on another line again. When '=<path>' isn't specified, the script is read from stdin. When this --script option is used, all input-param state is reset to the defaults, except for --patterntype, --baseaddr, and --findtarget. When beginning processing each line, the --patterndatamask is reset to the default before parsing the params each time.\n");
printf("--script=<path> Specifies a script from which to load params from(identical to the cmd-line params), each line is for a different pattern to search for. Each param applies to the current line, and all the lines after that until that param gets specified on another line again. When '=<path>' isn't specified, the script is read from stdin. When this --script option is used, all input-param state is reset to the defaults, except for --patterntype, --baseaddr, and --findtarget. When beginning processing each line, the --patterndatamask, --dataload, and --plainout state is reset to the default before parsing the params each time.\n");
return 0;
}