cylancevulnresearch / osx_runbin Goto Github PK

run_bin.c:82:41: warning: declaration of 'struct entry_point_command' will not be visible outside of this function
int find_epc(unsigned long base, struct entry_point_command **entry) {
                                        ^
run_bin.c:95:17: error: use of undeclared identifier 'LC_MAIN'
                if(lc->cmd == LC_MAIN) {        //0x80000028
                              ^
run_bin.c:96:11: warning: incompatible pointer types assigning to 'struct entry_point_command *' from 'struct entry_point_command *'
                        *entry = (struct entry_point_command *)lc;
                               ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
run_bin.c:242:29: warning: incompatible pointer types passing 'struct entry_point_command **' to parameter of type 'struct entry_point_command **'
                if(find_epc(execute_base, &epc)) {
                                          ^~~~
run_bin.c:82:63: note: passing argument to parameter 'entry' here
int find_epc(unsigned long base, struct entry_point_command **entry) {
                                                              ^
run_bin.c:247:101: error: incomplete definition of type 'struct entry_point_command'
                int(*main)(int, char**, char**, char**) = (int(*)(int, char**, char**, char**))(execute_base + epc->entryoff); 
                                                                                                               ~~~^
run_bin.c:235:10: note: forward declaration of 'struct entry_point_command'
                struct entry_point_command *epc;
                       ^
3 warnings and 2 errors generated.
macOS-Snow-Leopard:~ catap$ gcc -o run_bin run_bin.c 
run_bin.c:82: warning: 'struct entry_point_command' declared inside parameter list
run_bin.c:82: warning: its scope is only this definition or declaration, which is probably not what you want
run_bin.c: In function 'find_epc':
run_bin.c:94: error: 'for' loop initial declaration used outside C99 mode
run_bin.c:95: error: 'LC_MAIN' undeclared (first use in this function)
run_bin.c:95: error: (Each undeclared identifier is reported only once
run_bin.c:95: error: for each function it appears in.)
run_bin.c: In function 'resolve_symbol':
run_bin.c:121: error: 'for' loop initial declaration used outside C99 mode
run_bin.c:144: error: redefinition of 'i'
run_bin.c:121: error: previous definition of 'i' was here
run_bin.c:144: error: 'for' loop initial declaration used outside C99 mode
run_bin.c: In function 'load_and_exec':
run_bin.c:242: warning: passing argument 2 of 'find_epc' from incompatible pointer type
run_bin.c:247: error: dereferencing pointer to incomplete type
macOS-Snow-Leopard:~ catap$ 

dyld: NSLinkModule() error
dylb: initializer function 0x10000b740 not in mapped image for mytest

Trace/BPT trap: 5

➜  osx_runbin git:(master) ✗ ./run_bin /bin/ls
18446744073709551615
[1]    50963 segmentation fault  ./run_bin /bin/ls
➜  osx_runbin git:(master) ✗ lldb ./run_bin
(lldb) target create "./run_bin"
Current executable set to './run_bin' (x86_64).
(lldb) r /bin/ls
Process 50990 launched: './run_bin' (x86_64)
18446744073709551615
Process 50990 stopped
* thread #1: tid = 0x8cf8bd, 0x00000001000015ed run_bin`find_epc(base=18446744073709551615, entry=0x00007fff5fbff478) + 93 at run_bin.c:90, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0xf)
    frame #0: 0x00000001000015ed run_bin`find_epc(base=18446744073709551615, entry=0x00007fff5fbff478) + 93 at run_bin.c:90
   87  	    printf("%lu\n", base);
   88  		mh = (struct mach_header_64 *)base;
   89  		lc = (struct load_command *)(base + sizeof(struct mach_header_64));
-> 90  		for(int i=0; i<mh->ncmds; i++) {
   91  			if(lc->cmd == LC_MAIN) {	//0x80000028
   92  				*entry = (struct entry_point_command *)lc;
   93  				return 0;
(lldb)