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ropgadget_patternfinder
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Implemented --addval.

This commit is contained in:
yellows8 2015-06-09 18:37:58 -04:00
parent 856c47c525
commit b9b6283da1
1 changed files with 20 additions and 5 deletions
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25
ropgadget_patternfinder.c
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@ -17,6 +17,7 @@ size_t filebufsz=0, hashblocksize=0;
size_t patterndata_size=0, patternmask_size=0;
unsigned int dataload_offset = 0, dataload_enabled = 0;
unsigned int addval=0;
int enable_script = 0;
@ -218,6 +219,11 @@ int parse_param(char *param, int type)
sscanf(&param[11], "0x%x", &dataload_offset);
}
if(strncmp(param, "--addval=", 9)==0)
{
sscanf(&param[9], "0x%x", &addval);
}
if(strncmp(param, "--plainout", 10)==0)
{
plainout = 1;
@ -325,21 +331,27 @@ int locate_pattern()
{
if(!dataload_enabled)
{
if(!plainout)printf("Found the pattern at ");
printf("%s0x%x", line_prefix, ((unsigned int)pos) + baseaddr);
tmpval = ((unsigned int)pos) + baseaddr;
tmpval+= addval;
if(!plainout)printf("Found the pattern at(value added with 0x%x) ", addval);
printf("%s0x%x", line_prefix, tmpval);
if(!plainout)printf(".");
}
else
{
tmpval = *((unsigned int*)&filebuf[((unsigned int)pos) + dataload_offset]);
tmpval+= addval;
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]));
printf(", u32 value at +0x%x, value added with 0x%x: 0x%x.", dataload_offset, addval, tmpval);
}
else
{
printf("%s0x%x", line_prefix, *((unsigned int*)&filebuf[((unsigned int)pos) + dataload_offset]));
printf("%s0x%x", line_prefix, tmpval);
}
}
@ -398,6 +410,8 @@ int parse_script(FILE *fscript)
plainout = 0;
memset(line_prefix, 0, sizeof(line_prefix));
addval = 0;
while(*strptr)
{
if(strptr[0] == ' ')
@ -486,8 +500,9 @@ int main(int argc, char **argv)
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("--addval=0x<hexval> Add the specified value to the value which gets printed.\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, --dataload, and --plainout state 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, --addval, and --plainout state is reset to the default before parsing the params each time.\n");
return 0;
}